CN112706538A

CN112706538A - File folder

Info

Publication number: CN112706538A
Application number: CN202010854793.9A
Authority: CN
Inventors: 佐佐木润; 山崎裕二
Original assignee: Kokuyo Corp
Current assignee: Kokuyo Corp
Priority date: 2019-10-25
Filing date: 2020-08-24
Publication date: 2021-04-27
Anticipated expiration: 2040-08-24
Also published as: CN112706538B; JP2021066140A; JP7400344B2

Abstract

The invention provides a file capable of storing a plurality of paper sheets and preventing the paper sheets from falling off when the number of the stored paper sheets is small. The folder is provided with: a front cover (1) and a back cover (6); and separating leaves (2, 3, 4, 5) which divide the area between the front cover (1) and the back cover (6) into a plurality of pockets (P) capable of containing paper pages; and a joining piece (12) which is provided on one (1) of the front cover (1) and the rear cover (6), is folded back, is positioned outward of the edge (63) of the other (6), and is fastened to the end of the other (6) in this state.

Description

File folder

Technical Field

The present invention relates to a document holder for storing and holding documents and other paper sheets.

Background

As a folder capable of storing and holding a plurality of sheets of paper, a so-called transparent folder or transparent envelope is known. The folder divides the area between front cover (Japanese watch) and back cover (Japanese watch) into multiple pockets by using separating page area, and can store paper in each pocket.

The front cover, the back cover and the partition are made of resin sheets. Index tabs that protrude outward are often provided on the outer edge of the separator (see, for example, the following patent documents).

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2018-161796 (especially paragraphs 0048 to 0057, FIGS. 7 to 10)

Disclosure of Invention

Problems to be solved by the invention

In a conventional folder, it is not easy to store a plurality of sheets of paper.

As a method for increasing the number of sheets that can be stored, it is conceivable to provide a side set on the side of a folder, such as a paper envelope or a paper bag with a side set (japanese: マチ). However, since such side pairs are folded inward and protrude into the pockets, they may interfere with the paper sheets to be stored and prevent the paper sheets from being taken out and put in.

It is also a solution to form the folder in a box shape, i.e. to provide side walls between the front and back covers to separate them a certain distance in advance. However, when the number of sheets is small, the stored sheets are likely to fall off.

A desirable object of the present invention is to realize a folder capable of storing a plurality of paper sheets and preventing the paper sheets from being easily removed even when the number of the stored paper sheets is small.

Means for solving the problems

The file of the invention is provided with: a pair of covers; and a joining piece provided on one of the pair of covers, folded over, and having a ridge line of a fold thereof positioned outward of an edge of the other of the pair of covers, and fastened to an end of the other of the pair of covers in this state, the joining piece being provided on one of the pair of covers and the other edge intersecting the one of the pair of covers, the joining pieces being fastened to the one of the pair of covers and the other end different from the one of the pair of covers, respectively, and one of the pair of covers being unfastened with respect to the other at a portion other than the joining pieces.

More specifically, the joining pieces are provided on one side edge of the pair of covers and a lower edge intersecting the side edge, respectively, the joining piece provided on the side edge is fastened to the side end portion of the other of the pair of covers, and the joining piece provided on the lower edge is fastened to the lower end portion of the other of the pair of covers.

If a folding line extending parallel or substantially parallel to the fold line and promoting folding of one of the pair of covers is provided at a portion of one of the pair of covers that is close to the ridge line of the fold line at the base of the joining piece, the one of the pair of covers is likely to be deformed so as to extend the distance between the pair of covers when a plurality of sheets of paper are stored.

One and the other of the pair of covers may be formed separately without being integrally formed. In this case, the other party is not necessarily provided with the fold line.

When the rigidity of the other is higher than that of one of the pair of covers, a plurality of paper sheets can be stored, and folding or wrinkling of the paper sheets can be suppressed.

Preferably, the folder is provided with a partition that divides an area between the pair of covers into a plurality of pockets capable of accommodating paper sheets. In this case, it is conceivable that the rigidity of the other of the pair of covers is higher than the rigidity of the one of the pair of covers and the separator.

Preferably, the corner of the other of the pair of covers is provided with a protective portion which is not covered by the one of the pair of covers and is exposed.

Effects of the invention

According to the present invention, a folder capable of storing a plurality of paper sheets and preventing the paper sheets from easily falling off even when the number of the stored paper sheets is small can be realized.

Drawings

Fig. 1 is a perspective view of a folder according to an embodiment of the present invention.

Fig. 2 is a front view of the folder of this embodiment.

Fig. 3 is a rear view of the folder of this embodiment.

Fig. 4 is a front view of a pair of covers of the file folder of this embodiment.

Fig. 5 is an expanded view of the first separator of the folder of this embodiment.

Fig. 6 is an expanded view of the second division of the file folder of this embodiment.

Fig. 7 is a rear view showing a state in which the first and second partitions of the folder of this embodiment are folded in two, respectively.

Fig. 8 is a rear view showing a state where the second division body is housed in the first division body of the file folder of the embodiment, and then is superimposed on the front cover, and the second division body is welded to the front cover.

Fig. 9 is a sectional view taken along line a-a of the file folder of this embodiment.

Fig. 10 is a sectional view of the folder of this embodiment taken along line B-B.

Fig. 11 is a sectional view of the folder of this embodiment taken along line C-C.

Fig. 12 is a sectional view taken along line a-a showing a state in which a plurality of paper sheets are stored in the folder of this embodiment.

Fig. 13 is a C-C line sectional view showing a state where a plurality of paper sheets are stored in the folder of the embodiment.

Fig. 14 is a development view of the first separator and the second separator according to the first modification of the present invention.

Fig. 15 is a front view of a folder according to a first modification of the present invention.

Fig. 16 is a rear view of a folder according to a first modification of the present invention.

Detailed Description

An embodiment of the present invention is explained with reference to the drawings. The file folder of the present embodiment shown in fig. 1 to 11 is formed by dividing the region between the front cover 1 and the back cover 6 into a plurality of pockets P by a plurality of

pages

2, 3, 4, 5. The folder is vertical, and the height dimension is larger than the width dimension. The right and upper sides are open, and documents and other paper sheets S can be taken out or put in from the right or upper side. On the other hand, the left and lower sides are closed, and the stored paper sheets S are held so as not to fall off.

The folder of the present embodiment includes a front cover 1, a back cover 6, and optionally four

separate pages

2, 3, 4, and 5. The front cover 1, the back cover 6, and the

separator sheets

2, 3, 4, and 5 are made of, for example, thin resin sheets. The front cover 1, the back cover 6, and the

separating sheets

2, 3, 4, and 5 are transparent or translucent, and the presence of the paper sheets S stored in the pocket P can be seen through.

As shown in fig. 1, 2 and 4, the front cover 1 has a rectangular outline in which the right and left sides are longer than the upper and lower sides, respectively. The main index tab 11 protrudes outward, i.e., rightward from the right side edge of the front cover 1.

The front cover 1 is integrally provided at its left and lower ends with

engaging pieces

12 and 14, respectively. These joining

pieces

12 and 14 are portions for fastening to the left end and the lower end of the back cover 6 to shield the pockets P in the folder from the left and lower sides. The engaging piece 12 connected to the left side edge of the front cover 1 is folded back toward the back side (in other words, inward from the left side edge of the front cover 1, that is, to the right side) along the fold 121 extending in the height direction. A fold line 13 extending in the height direction parallel or substantially parallel to the fold line 121 is formed at a position close to the ridge line of the fold line 121. The

fold lines

13, 15 are thin slots or ribs which serve to facilitate the folding of the front cover 1 and the

engagement tabs

12, 14 therealong. The

fold lines

13 and 15 can be formed by, for example, pressing a die having a thin strip-shaped scribing blade (blade) against a sheet material to be a blank of the front cover 1. The fold line 13 is present in plural in such a manner as to sandwich the fold 121.

The engaging piece 14 connected to the lower edge of the front cover 1 is folded back toward the back side (in other words, inward from the lower edge of the front cover 1, i.e., upward) along the fold 141 extending in the width direction. A fold line 15 extending in the width direction parallel or substantially parallel to the fold line 141 is formed at a position close to the ridge line of the fold line 141. The fold line 15 is provided in plural so as to sandwich the fold 141.

As shown in fig. 3 and 4, the back cover 6 has a rectangular outline in which the right and left sides are longer than the upper and lower sides, respectively. The height dimension of the back cover 6 is equal to the height dimension of the front cover 1 except for the engaging piece 14, but the width dimension of the back cover 6 is slightly larger than the width dimension of the front cover 1 except for the main index tab 11 and the engaging piece 12. The upper half of the right side of the back cover 6 is notched (notch 61) inward of the upper and lower halves by a few mm toward the left. The upper left side portion of the back cover 6 is notched (notch 62) so as to be recessed inward, i.e., downward by several mm from the left end portion and the right half portion.

The middle portion of the left side of the back cover 6 is notched inward, i.e., rightward, by about several mm from the upper end portion and the lower end portion (notch 63). The lower middle portion of the back cover 6 is also notched (notch 64) inward, i.e., upward, by about several mm from the right and left end portions.

As shown in fig. 9 to 13, the back cover 6 has a thickness larger than the front cover 1 and the

barrier sheets

2, 3, 4, and 5, and is stronger, i.e., has higher rigidity and lower flexibility than the front cover 1 and the

barrier sheets

2, 3, 4, and 5. The lower right and lower left corners of the back cover 6 located on the left and right of the cutout 64 function as protecting

portions

65 and 66 for protecting the folder and the paper sheets S contained therein.

The four

separator sheets

2, 3, 4, 5 are arranged in the order of separator sheet 2, separator sheet 3, separator sheet 4 and separator sheet 5 from the front side of the folder, i.e. the front cover 1, to the back side of the folder, i.e. the back cover 6. The separator 2 and the separator 5 are integrally connected to form a separator 7, and the separator 3 and the separator 4 are also integrally connected to form a separator 8.

As shown in fig. 5 and 7, the first separator 7 constituting the

sheets

2 and 5 is formed by coupling the left side of the sheet 2 and the left side of the sheet 5 to each other via a coupling portion 71. The main index tab 21 protrudes outward, i.e., rightward from the right side edge of the separator 2. The main index tab 51 protrudes outward, i.e., rightward from the right side edge of the separator 5.

The upper portion of the partition 2 on the left side is retracted inward, i.e., downward, by about several mm from the left end portion and the right half portion. From which the secondary index tab 22 protrudes outwardly, i.e. above. Similarly, the upper portion of the partition 5 on the left side is also retracted inward, i.e., downward, by about several mm from the left end portion and the right half portion. From which a secondary index tab 52 projects outwardly, i.e., upwardly. The

secondary index tabs

22, 52 are significantly smaller in size than the

primary index tabs

21, 51.

The coupling portion 71 is connected to each of the left side of the sheet 2 and the left side of the sheet 5. As shown in fig. 7, the first separator 7 is folded in two so that the right side edges of the two

sheets

2 and 5 overlap each other along a fold line 711 extending in the height direction at the center of the connecting portion 71. A folding line 72 extending in the height direction parallel or substantially parallel to the fold line 711 is formed at a position close to the ridge line of the fold line 711. The fold line 72 is a thin groove or rib, and plays a role of facilitating the first separator 7 and the connection portion 71 to be folded therealong. The fold line 72 can be formed by, for example, pressing a die having a thin strip-shaped scribing blade against a sheet material to be a blank of the first separator 7. The fold line 72 is present in plural in such a manner as to sandwich the fold 711.

The connecting portions 71 are arranged in pairs, and holes or slits 73 penetrating the separator 7 are formed therebetween.

As shown in fig. 6 and 7, the second division body 8 constituting the leaf 3 and the leaf 4 is formed by mutually connecting the left side of the leaf 3 and the left side of the leaf 4 via a connecting portion 81. The main index tab 31 protrudes outward, i.e., rightward from the right side edge of the separator 3. The main index tab 41 protrudes outward, i.e., rightward from the right side edge of the separator 4.

The upper portion of the partition 3 on the left side is retracted inward, i.e., downward, by about several mm from the left end portion and the right half portion. From which the secondary index tab 32 protrudes outward, i.e., above. Similarly, the upper portion of the partition 4 on the left side is also retracted inward, i.e., downward, by about several mm from the left end portion and the right half portion. From which a secondary index tab 42 protrudes outward, i.e., above. The

secondary index tabs

32, 42 are significantly smaller in size than the

primary index tabs

31, 41.

The connection portion 81 is connected to each of the left side of the sheet 3 and the left side of the sheet 4. As shown in fig. 7, the second division body 8 is folded in two so that the right side edges of the two

sheets

3 and 4 overlap each other along a fold 811 extending in the height direction at the center of the coupling portion 81.

The process of manufacturing the folder according to the present embodiment will be described. First, as shown in fig. 7, the first separator 7 and the second separator 8 are folded, respectively. Next, the second division body 8 is housed in the first division body 7. At this time, as shown in fig. 8, the coupling portion 81 of the second separator 8, which projects outward, i.e., leftward from the left side edges of the two

sheets

3 and 4, is inserted into the through hole or slit 73 formed in the first separator 7. As a result, the coupling portion 81 projects outward, i.e., leftward, from the left side edges of the two

sheets

2 and 5 of the first separator 7.

Next, as shown in fig. 8, the set of the first and

second division bodies

7 and 8 is superimposed on the back surface of the front cover 1. Then, the protruding part 81 of the second division body 8 is fastened to the joining sheet 12 of the front cover 1 by ultrasonic welding or the like. The portion 813 where the projection 81 is welded to the joining piece 12 is located on the left side, which is the outer side of the ridge line of the fold 121 at the base of the joining piece 12 of the front cover 1 (before folding), and located on the right side, which is the inner side of the fold line 13.

Then, the back cover 6 is overlapped on the back surfaces of the front cover 1 and the separating

bodies

7 and 8. Then, as shown in fig. 3, 9 and 10, the joining piece 12 and the protruding portion 81 fastened to each other are folded back inward, i.e., to the right side along the

fold lines

121 and 811 extending in the height direction and are wound around the back surface side of the back cover 6, and then the joining piece 12 is fastened to the left end portion of the back cover 6 by ultrasonic welding or the like. The portion 122 where the joining piece 12 is welded to the back cover 6 is located inward, i.e., rightward, of the folding line 13 formed in the joining piece 12.

As shown in fig. 3 and 11, the joining piece 14 of the front cover 1 is folded back inward, i.e., upward, along the fold 141 extending in the width direction and is wound around the back surface side of the back cover 6, and then the joining piece 14 is fastened to the lower end portion of the back cover 6 by ultrasonic welding or the like. The portion 142 where the joining piece 14 is welded to the back cover 6 is located inward of, i.e., above, the folding line 15 formed in the joining piece 14.

The folder of the embodiment includes: a pair of covers 1, 6; a folded first separator 7 that constitutes the

separation sheets

2 and 5 that divides the area between the pair of covers 1 and 6 into a plurality of pockets P capable of storing the paper sheets S; and a second division body 8 which constitutes the

division sheets

3, 4 dividing the area between the pair of covers 1, 6 into a plurality of pockets P capable of storing the paper-sheets S, is stored in the first division body 7, and has a protruding part 81 protruding from the ridge line of the fold 711 of the first division body 7 in this state and fastened to either cover 1.

More specifically, a through hole or slit 73 that penetrates the first separator 7 is provided near the ridge line of the fold 711 of the first separator 7, and the protruding portion 81 of the second separator 8 is configured to protrude outward beyond the ridge line of the fold 711 of the first separator 7 through the through hole or slit 73.

The second separating body 8 secures its projection 81 relative to the cover 1 without coming out from between the covers 1, 6. Further, the coupling portion 71 of the first separator 7 wraps or bites the left end portion of the second separator 8, and even if an external force acts on the separator 7, the first separator 7 is blocked by the second separator 8 and does not come out from between the covers 1 and 6. In short, it is possible to realize a durable and convenient folder in which the

separator sheets

2, 3, 4, and 5 are not easily separated.

The second separator 8 is folded and accommodated in the first separator 7 to form two

separator sheets

3 and 4. Therefore, the number of the

separator sheets

2, 3, 4, 5 and the number of the pockets P included in the folder are increased, and a plurality of sheets S can be finely sorted and stored.

Since the projecting portion 81 of the second division body 8 is folded back, the ridge line of the fold 812 is positioned in the vicinity of the edge 121 of either one of the pair of covers 1 and 6, and the projecting portion 81 is fastened to the cover 1, the depth of the pocket P on the left side, which is the direction in which the fold 812 of the second division body 8 is positioned, is increased, and the paper sheet S is more easily inserted into the pocket P.

Since the lower ends of the pair of covers 1 and 6 intersecting the left end, which is the end to which the protrusion 81 of the second division body 8 is fastened, are connected to each other via the joining piece 14, the lower end of the folder is closed, and the

separation sheets

2, 3, 4, 5, and the paper sheets S can be prevented from coming off from the lower end.

Further, the folder of the present embodiment includes: a pair of covers 1, 6; a plurality of separating

sheets

2, 3, 4, 5 which divide the area between the pair of covers 1, 6 into a plurality of pockets P capable of accommodating the paper sheets S;

main index tabs

21, 31, 41, 51 projecting outward beyond predetermined edges of the plurality of

separator sheets

2, 3, 4, 5, respectively, and displaced from each other along the edges; and

sub index tabs

22, 32, 42, 52 protruding outward from predetermined edges of the plurality of

sheets

2, 3, 4, 5, respectively, and displaced from each other along the edges, and having a size smaller than the

main index tabs

21, 31, 41, 51.

In the present embodiment, the

main index tabs

11, 21, 31, 41, and 51 provided on the front cover 1 and the

barrier sheets

2, 3, 4, and 5 are arranged in the height direction along the right side edges of the front cover 1 and the

barrier sheets

2, 3, 4, and 5. These

main index tabs

11, 21, 31, 41, 51 do not overlap each other in the front view and the rear view. As shown in fig. 3, the

main index tabs

11, 21, 31, 41, and 51 are positioned to face the cutout 61 formed in the right side edge of the back cover 6, and slightly protrude outward, i.e., to the right side, from the right side edge. That is, the

main index tabs

11, 21, 31, 41, and 51 are not completely blocked by the back cover 6 in the rear view and are partially exposed.

The

sub index tabs

22, 32, 42, and 52 provided on the

respective separator sheets

2, 3, 4, and 5 are provided on the upper side, which is an edge intersecting the right side different from the right side, which is an edge on which the

main index tabs

21, 31, 41, and 51 are provided, and are arranged in the width direction along the upper sides of the

separator sheets

2, 3, 4, and 5. These

secondary index tabs

22, 32, 42, 52 do not overlap each other in the primary and rear views. As shown in fig. 3, the

sub-index tabs

22, 32, 42, and 52 project outward, i.e., upward, from the upper edge of the back cover 6 at positions facing the notches 62 formed at the upper edge. That is, the

sub index tabs

22, 32, 42, 52 are exposed without being blocked by the back cover 6 in the rear view. On the other hand, as shown in fig. 2, the

sub index tabs

22, 32, 42, 52 do not protrude outward, i.e., upward, from the upper edge of the front cover 1. That is,

secondary index tabs

22, 32, 42, 52 are protected by front cover 1.

The arrangement of the

sub index tabs

22, 32, 42, 52 is centered on a width of several tens of mm (e.g., about 45mm) that can be reached by a person moving only the fingers without relatively moving the back of the hand or palm with respect to the folder.

According to the present embodiment, while holding the folder with the left hand, for example, with the back cover 6 being strong, the user can easily open a desired pocket P by putting the fingers of the left hand on the

sub-index tabs

22, 32, 42, and 52 from the back side and turning the

barrier sheets

2, 3, 4, and 5. At this time, the operation can be performed while visually checking the

main index tabs

11, 21, 31, 41, and 51.

Further, the folder of the present embodiment includes: a pair of covers 1, 6; separating

pages

2, 3, 4, 5 which divide the area between the pair of covers 1, 6 into a plurality of pockets P capable of accommodating the paper-sheets S; and joining

pieces

12, 14 provided on one 1 of the pair of covers 1, 6, folded back so that the ridge of the fold 122 is positioned outward of the

edges

63, 64 of the other 6 of the pair of covers 1, 6, and fastened to the end of the other 6 of the pair of covers 1, 6 in this state. In addition, one 1 of the pair of covers 1 and 6 is not fastened (welded) to the other 6 at a portion other than the joining

pieces

12 and 14.

More specifically, the

engagement pieces

12 and 14 are provided on one edge, i.e., the left side edge, of the pair of covers 1 and 6 and on the other edge, i.e., the lower side edge, which intersects the left side edge. The former joining piece 12 is fastened to the left end portion, which is one end portion of the other 6 of the pair of covers 1 and 6. As shown in fig. 9, in a stage where the paper sheets S are not stored, the ridge line of the fold 121 of the engaging piece 12 is located on the outer side, i.e., the left side, of the left side edge 63 of the back cover 6. The latter engagement piece 14 is fastened to the lower end portion, which is the other end portion of the other side 6 different from the left end portion. As shown in fig. 11, in a stage where the paper sheets S are not stored, the ridge line of the fold 141 of the joining piece 14 is located outward, i.e., downward, from the lower side of the back cover 6.

According to the present embodiment, when a plurality of (for example, fifty or more) sheets S are stored in the folder, the volume of the pocket P can be enlarged by displacing the front cover 1 so as to be separated from the back cover 6 while deforming so that the left end portion of the front cover 1 enters the left side notch 63 of the back cover 6 as shown in fig. 12 and the lower end portion of the front cover 1 enters the lower notch 64 of the back cover as shown in fig. 13. Further, since the front cover 1 is not fastened to the back cover 6 at a portion other than the joining

pieces

12, 14, the front cover 1 and the back cover 6 are not prevented from being separated and the folder is not expanded, that is, the volume of the pocket P is not enlarged.

On the other hand, as shown in fig. 9 to 11, when the number of the paper sheets S to be stored is small, the front cover 1 approaches the back cover 6, and the volume of the pocket P is reduced so that the front cover 1, the

separation pages

2, 3, 4, 5, and the back cover 6 are in close contact with each other. Therefore, friction generated between the paper sheets S stored in the pocket P and the front cover 1, the separating

sheets

2, 3, 4, 5, or the back cover 6 is increased, and the falling off of the paper sheets S can be effectively suppressed.

Since the

folding lines

13, 15 extending parallel or substantially parallel to the

folding lines

121, 141 and facilitating the folding of the one cover 1 are provided at the portions of the one cover 1 of the pair of covers 1, 6 which are close to the ridge lines of the

folding lines

121, 141 at the base portions of the joining

pieces

12, 14, it is easy to deform the one cover 1, 6 so that the distance therebetween is increased when storing a plurality of paper-sheets S.

One 1 and the other 6 of the pair of covers 1 and 6 are formed separately from each other. The other side 6 is not provided with the fold lines 13 and 15. In addition, since the rigidity of the other 6 of the pair of covers 1, 6 is higher than the rigidity of the one 1 of the pair of covers 1, 6 and the

barrier sheets

2, 3, 4, 5, a plurality of sheets of paper sheets S can be stored, and the stored paper sheets S can be protected by the firm cover 6, thereby preventing the paper sheets S from being folded or wrinkled.

The other 6 of the pair of covers 1 and 6 has protecting

parts

65 and 66 provided at its corner and exposed without being covered by one of the pair of covers 1 and 6. As shown in fig. 12 and 13, when a plurality of paper sheets S are stored, the protecting

portions

65 and 66 protrude outward, i.e., to the left and downward, relative to one 1 of the pair of covers 1 and 6. The protecting

portions

65 and 66 help to protect the cover 1, the

separator sheets

2, 3, 4, and 5, and the stored paper sheets S of the folder when the folder is mistakenly dropped.

Furthermore, the present invention is not limited to the above-described embodiments. For example, in the above embodiment, the first separator 7 and the second separator 8 are separately configured, but it is also conceivable to integrate the first separator 7 and the second separator 8 by connecting them together via the connecting portion 9 as shown in fig. 14.

In the illustrated example, the lower edge of the sheet 2 and the lower edge of the sheet 3 are connected to each other via a connecting portion 9, and the lower edge of the sheet 4 and the lower edge of the sheet 5 are connected to each other via the connecting portion 9. In addition, the left side of the sheet 3 and the left side of the sheet 4 are connected via the connecting portion 82. An コ -shaped slit 814 surrounding three sides is provided at the intermediate portion between the separator 3 and the separator 4 of the second separator 8, and the inside thereof is a protrusion 81.

When the

separator sheets

2, 3, 4, 5 of the folder are formed from the

integrated separators

7, 8, the upper edges of the

separator sheets

2, 5 are first folded along the fold line 91 of the connecting portion 9 so as to overlap the upper edges of the

separator sheets

3, 4, and then the right side edges of the

separator sheets

2, 3 are folded along the

fold lines

711, 821 of the connecting

portions

71, 82 so as to overlap the right side edges of the

separator sheets

4, 5. In summary, the

integrated separating bodies

7, 8 are folded at right angles four-fold or crosswise.

The folder of the above embodiment is a vertical type having right and left sides longer than upper and lower sides, and has

main index tabs

11, 21, 31, 41, 51 provided on the right side and

sub index tabs

22, 32, 42, 52 provided on the upper side. On the other hand, it is needless to say that a horizontal folder having a shorter right side and left side than upper and lower sides as shown in fig. 15 and 16 may be configured.

The basic structure of the horizontal folder illustrated in the drawings corresponds to a structure in which the vertical folder of the above-described embodiment is laid down counterclockwise. The width of the horizontal folder is larger than the height, and the upper side of the horizontal folder is open, so that the paper sheets S can be taken out or put in from the upper side. On the other hand, the left, right, and lower sides are closed, and the stored paper sheets S are held so as not to fall off. That is, the joining pieces 18 connected to the left and right side edges of the front cover 1 are folded back toward the back along the fold line 181 and joined to the left and right end portions of the back cover 6, and the joining piece 16 connected to the lower edge of the front cover 1 is folded back toward the back along the fold line 181 and joined to the lower end portion of the back cover 6. Fold

lines

17 and 19 are formed at portions of the front cover 1 and the joining pieces 16 and 18 close to the ridge lines of the

folding lines

161 and 181. The front cover 1 is not fastened (welded) to the back cover 6 at a portion other than the joining pieces 16 and 18.

The

main index tabs

11, 21, 31, 41, 51 are provided at the upper side. The

main index tabs

11, 21, 31, 41, 51 project slightly upward from the upper edge of the cutout 67 formed in the back cover 6 in the rear view. The

secondary index tabs

22, 32, 42, 52 are disposed on the left side. The

sub index tabs

22, 32, 42, 52 project leftward and laterally from the left side edge of the cutout 68 formed in the back cover 6 in the rear view. The lower right and lower left corners of the back cover 6 function as the protector 69.

It is not essential that the cover 1 of the file be formed with

fold lines

13, 15, 17, 19.

It is not essential to arrange the

separator sheets

2, 3, 4, 5 in the region between the pair of covers 1.

In addition, the specific configuration of each part can be variously modified within a range not departing from the gist of the present invention.

Description of the reference symbols

1. 6 … A pair of covers (front cover, back cover)

12. 14 … joint sheet

121. 141 … fold

13. 15 … fold line

2. 3, 4, 5 … partition page

21. 31, 41, 51 … Main index tag

22. 32, 42, 52 … Secondary index Tab

6 … back cover

63. 64 … edge (left side, lower edge)

7 … first separator

711 … fold

73 … through hole or slit

8 … second separator

812 … crease

Pocket P …

S … paper sheet

Claims

1. A folder is provided with:

a pair of covers; and

a joining piece provided on one of the pair of covers, folded over, and having a ridge line of a fold thereof positioned outward of an edge of the other of the pair of covers, and fastened to an end of the other of the pair of covers in this state,

the joint sheet is arranged on one edge of one of the pair of covers and the other edge crossed with the edge,

each of the joining pieces is fastened to one end of the other of the pair of covers and the other end different from the one end,

one of the pair of covers is not fastened to the other of the pair of covers at a portion other than the respective joining pieces.

2. The file folder as set forth in claim 1,

the joining pieces are provided on one side edge of the pair of covers and a lower edge intersecting the side edge,

the joining piece provided on the side edge is fastened to the side end portion of the other of the pair of covers, and the joining piece provided on the lower edge is fastened to the lower end portion of the other of the pair of covers.

3. The file folder as set forth in claim 1,

one of the pair of covers is provided with a folding line which extends parallel or substantially parallel to the folding line and facilitates folding of the one cover at a position close to the ridge line of the folding line at the base of the joining piece.

4. The file folder as set forth in claim 3,

one of the pair of covers and the other cover are formed separately, and the folding line is not provided on the other cover.

5. The file folder as set forth in claim 1,

the other of the pair of covers has higher rigidity than the one of the pair of covers.

6. The file folder as set forth in claim 1,

the paper sheet packaging machine is provided with a partition page which divides an area between the pair of covers into a plurality of pockets capable of accommodating paper sheets.

7. The file folder as set forth in claim 6,

the other of the pair of covers has a higher rigidity than the one of the pair of covers and the partition.

8. The file folder according to claim 5 or 7,

the corner of the other of the pair of covers is provided with a protective part which is not covered by the one of the pair of covers and is exposed.