File

Abstract

To provide a file which is configured so that both a front side sheet and a back side sheet constituting a storage part can take suitable double-folded attitudes.SOLUTION: A file has a double-foldable storage part sp including a base sheet 4 as a front side sheet and a cover 1 as a back side sheet, wherein a base sheet left piece half part 33 and a front cover 11 are fixed to each other, and a base sheet right piece half part 34 and a back cover 12 are relatively movably arranged. There can be provided a file configured in which both a base sheet 4 and a cover 1 constituting a storage part sp can take suitable double-folded attitudes.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a file capable of accommodating documents.

Background Art

[0002] Conventionally, there has been known a file having a foldable storage portion composed of a front sheet and a rear sheet (see, for example, Patent Document 1).

[0003] This type of file has a configuration in which both the left and right half portions on the front sheet are fixed to the left and right half portions on the rear sheet, respectively.

[0004] However, in a file having such a configuration, when folding in half with a relatively large number of documents accommodated between the front sheet and the rear sheet, an unexpected deformation of the front sheet is particularly caused due to the difference in the arrangement positions of the front sheet and the rear sheet, and there has been a problem that it is difficult for the entire file to take a suitable double-folded posture.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] The present invention has been made paying attention to the above circumstances, and at least provides a file configured such that both the front sheet and the rear sheet constituting the storage portion can take a suitable double-folded posture.

Means for Solving the Problems

[0007] That is, the present invention has the following configuration.

[0008] The invention according to claim 1 is a file having a foldable storage portion composed of a front sheet and a rear sheet, wherein the front sheet includes one half portion located on one side of the folded storage portion and the other half portion located on the other side, and the rear sheet includes one half portion located on one side of the folded storage portion and the other half portion located on the other side, one half portion of the front sheet and one half portion of the rear sheet are fixed to each other, and the other half portion of the front sheet and the other half portion of the rear sheet are arranged to be relatively movable. It has a guide mechanism for guiding the other half of the front sheet and the other half of the rear sheet to be relatively movable, and the guide mechanism has another sheet provided on the other half of the rear sheet, and the upper edge of the other half of the front sheet can engage with the bent portion formed on the other sheet. It is a file. The invention according to claim 2 is a file having a foldable storage portion composed of a front sheet and a rear sheet. The front sheet includes one half portion located on one side of the folded storage portion and the other half portion located on the other side. The rear sheet includes one half portion located on one side of the folded storage portion and the other half portion located on the other side. One half portion of the front sheet and one half portion of the rear sheet are fixed to each other, and the other half portion of the front sheet and the other half portion of the rear sheet are arranged to be relatively movable. The height dimension of the front sheet is set such that its upper end portion is located at the middle portion in the vertical direction of the rear sheet. The invention according to claim 3 is a file having a foldable storage portion composed of a front sheet and a rear sheet, The storage portion is configured to be able to open and close between an unfolded posture where it is not folded and a closed posture where the storage portion is folded in half. wherein the front sheet includes one half portion located on one side of the folded storage portion and the other half portion located on the other side, and the rear sheet includes one half portion located on one side of the folded storage portion and the other half portion located on the other side, one half portion of the front sheet and one half portion of the rear sheet are fixed to each other, and the other half portion of the front sheet and the other half portion of the rear sheet are With the posture change between the unfolded posture and the closed posture arranged to be relatively movable. It is a file.

[0009] Claim 4 The invention according to the claim is the file according to claim, provided with a guide mechanism for guiding the other half portion of the front sheet and the other half portion of the rear sheet to be relatively movable. 2 or 3 described.

[0010] Claim 5The invention described in claim 4 is the file described.

[0011] Claim 6 The invention described in claim 4 is the file described.

[0012] Claim 7 The invention described in claim , 2 or 3 is the file described.

[0013] Claim 8 The invention described in claim 7 is the file described.

[0014] Claim 9 is a file configured to be openable and closable between a deployed posture in which the storage part is not folded in half and a closed posture in which the storage part is folded in half, and a first hinge part having one or more folding lines is provided between the one half part and the other half part of the front sheet, and a second hinge part having one or more folding lines is provided between the one half part and the other half part of the rear sheet, and the first hinge part and the second hinge part are arranged at positions relatively offset in the deployed posture. Claim 1 , 2 or 3 is the file described.

[0015] Claim 10 The invention according to claim is configured to be openable and closable between an unfolded posture in which the storage part is not folded in two and a closed posture in which the storage part is folded in two, and the relative movement is a left-right movement made along with a change in posture between the unfolded posture and the closed posture. Claims 1, 2, 3, 4, 5, 6, 7 , 8 or 9 The file described above.

[0016] The invention according to claim 9 is configured to be openable and closable between an unfolded posture in which the storage part is not folded in two and a closed posture in which the storage part is folded in two, and the relative movement is a left-right movement made along with a change in posture between the unfolded posture and the closed posture. It is the file described in Claims 1, 2, 3, 4, 5, 6, 7 or 8.

Effect of the Invention

[0017] As described above, according to the present invention, it is possible to provide at least a file configured such that both the front sheet and the rear sheet constituting the storage part can take a suitable two-fold posture.

Brief Description of the Drawings

[0018]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Figure 16

Mode for Carrying Out the Invention

[0019] Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 15. In the figures, the welded part (welding portion) is denoted by reference sign y. Also, the left - right and up - down directions in the specification are shown for convenience in the description.

[0020] This embodiment applies the present invention to a file provided with a two - foldable storage part sp capable of accommodating documents P such as papers.

[0021] The file has a two - foldable storage part sp including a base sheet 4 which is the front sheet and a cover 1 which is the rear sheet located behind the base sheet 4.

[0022] The file is configured to be openable and closable between an unfolded posture (T) in which the storage part sp is not folded in half and a closed posture (F) in which the storage part sp is folded in half. That is, the file includes a cover 1 having a front cover sheet 11 and a back cover sheet 12, and is in an unfolded posture (T) which is a double-page spread posture in which the front cover sheet 11 and the back cover sheet 12 can be unfolded so as to be substantially flush, and a closed posture (F) in which the inner surfaces of the front cover sheet 11 and the back cover sheet 12 are substantially parallel so as to face each other. It is configured to be rotatable about the central part in the left-right direction between the two postures with the central part in the left-right direction as the rotation center.

[0023] The file includes a cover 1 having a front cover sheet 11 which is the left half part and a back cover sheet 12 which is the right half part, a plurality of, that is, two front and rear partition sheets, a front partition sheet 3 and a rear partition sheet 2 arranged on the front side of the cover 1, a base sheet 4 arranged on the front side of the front partition sheet 3, a pocket sheet 5 arranged on the front side of the left half part of the base sheet, that is, the left half part of the base sheet 41, which can form a pocket capable of accommodating an article in cooperation with the left half part of the base sheet 41, and a holding sheet 6 arranged so as to cover the front and rear of the right half part of the base sheet, that is, the right half part of the base sheet 42, and holding the right half part of the base sheet 42 so as to be relatively movable in the left-right direction while suppressing the movement in the up-down direction.

[0024] The file is provided with first and second guide mechanisms G1, G2 which are guide mechanisms for guiding the right half part of the base sheet 42 which is a half part of the front sheet to be relatively movable in a predetermined direction with respect to the half part of the rear sheet, that is, the back cover sheet 12.

[0025] <Cover 1> The cover 1 is substantially horizontally long rectangular as a whole. The cover 1 is made of a sheet material thicker than other sheets, that is, the front partition sheet 3, the rear partition sheet 2, the base sheet 4, the pocket sheet 5, and the holding sheet 6.

[0026] The front cover 1 includes a front cover sheet 11 having a substantially vertically long rectangular shape located on the left side in the unfolded posture (T), a back cover sheet 12 having a substantially vertically long rectangular shape located on the right side in the unfolded posture (T), and a back cover 13 which is a hinge portion interposed between the front cover sheet 11 and the back cover sheet 12.

[0027] At the upper edge of the front cover sheet 11, a recess 11a is formed where a rubber band B provided on the back cover 13 can engage in the closed posture (F). Also, at the upper edge of the front cover sheet 11, a notch 11b is formed at a position corresponding to a rear finger hook tab 21a protruding from the upper end of the rear partition sheet 2 and a front finger hook tab 31a protruding from the upper end of the front partition sheet 3.

[0028] Both ends of the rubber band B for holding the closed posture (F) on the outer surface side are attached to the back cover sheet 12 via known attachment means. At the upper end of the back cover sheet 12, a recess 12a where the rubber band B can engage is formed in the same manner as the front cover sheet 11.

[0029] The back cover 13 entirely constitutes a hinge portion. The back cover 13 includes a pair of left and right inward folding lines m1 extending in the vertical direction, and a pair of left and right outward folding lines m2 extending in the vertical direction arranged outside each of the pair of left and right inward folding lines m1. The back cover 13 includes a back cover main body 13a provided between the pair of left and right inward folding lines m1, and side end auxiliary portions 13b provided on both sides of the back cover main body 13a and located between the inward folding line m1 and the outward folding line m2.

[0030] <Rear partition sheet 2 (partition)> The rear partition sheet 2 which is a partition is disposed in front of the cover 1. The rear partition sheet 2 has a horizontally long rectangular sheet shape as a whole. The rear partition sheet 2 includes a rear partition sheet left half portion 21 having a substantially vertically long rectangular shape located on the left side in the unfolded posture (T), a rear partition sheet right half portion 22 having a substantially vertically long rectangular shape located on the right side in the unfolded posture (T), and a rear partition sheet hinge portion 23 which is a hinge portion interposed between the rear partition sheet left half portion 21 and the rear partition sheet right half portion 22.

[0031] On the left half portion 21 of the rear partition sheet, a rear finger hook convex piece 21a having a shape that is easy for the user to pick with a finger is protruding at the upper end portion. At the lower portion of the left half portion 21 of the rear partition sheet, a fixing piece C that is welded to the inner surface side of the front cover 11 is protruding. Note that the configuration of the fixing piece C will be described in detail later.

[0032] The right half portion 22 of the rear partition sheet is provided with an end recess 22a after recessing the lower half of the right end edge toward the rear partition sheet hinge portion 23 side. The subsequent end recess 22a is provided to avoid interference with the right welded piece 66 in the holding sheet 6 welded to the lower half of the right side edge of the back cover 13 and the right margin 65 adjacent to the right welded piece 66.

[0033] The rear partition sheet hinge portion 23 includes a central fold line n1 extending in the vertical direction and provided at substantially equal intervals in the horizontal direction, and left and right fold lines n2.

[0034] The right half portion 22 of the rear partition sheet and the rear partition sheet hinge portion 23 that constitute the rear partition sheet 2 are in a state of not being directly and indirectly fixed to other sheets. In other words, the right half portion 22 of the rear partition sheet and the rear partition sheet hinge portion 23 are fixed to the cover 1 by welding via the left half portion 21 of the rear partition sheet.

[0035] <The front partition sheet 3 (partition)> The front partition sheet 3 is disposed in front of the rear partition sheet 2. The front partition sheet 3 is generally in the shape of a horizontally long rectangular sheet. The front partition sheet 3 includes a left half portion 31 of the front partition sheet having a substantially vertically long rectangular shape located on the left side in the unfolded posture (T), a right half portion 32 of the front partition sheet having a substantially vertically long rectangular shape located on the right side in the unfolded posture (T), and a front partition sheet hinge portion 33 that is a hinge portion interposed between the left half portion 31 of the front partition sheet and the right half portion 32 of the front partition sheet.

[0036] On the left half 31 of the front partition sheet, a front finger hook convex piece 31a having a shape that is easy for the user to pick with a finger is protruding at the upper end. Note that the front finger hook convex piece 31a is provided at a position shifted to the right with respect to the rear finger hook convex piece 21a in a front view in the deployed posture (T). At the lower part of the left half 31 of the front partition sheet, a punching hole D is formed along with the formation of the fixing piece C.

[0037] The right half 32 of the front partition sheet is provided with a front edge concave portion 32a that recesses the lower half of the right end edge toward the front partition sheet hinge portion 33 side. The front edge concave portion 32a is provided to avoid interference with the right welded piece 66 of the holding sheet 6 welded to the lower half of the right edge of the back cover 13 and the right margin 65 adjacent to the right welded piece 66.

[0038] The front partition sheet hinge portion 33 includes center and left and right fold lines r1, r2 that extend in the vertical direction and are provided at substantially equal intervals in the horizontal direction.

[0039] The right half 32 of the front partition sheet and the front partition sheet hinge portion 33 that constitute the front partition sheet 3 are in a state of not being directly and indirectly fixed to other sheets. In other words, the right half 32 of the front partition sheet and the front partition sheet hinge portion 33 are fixed to the cover 1 via the left half 21 of the rear partition sheet continuously provided to the left half 31 of the front partition sheet via a bent portion a1.

[0040] The file of this embodiment is provided with a storage portion sp partitioned by a front partition sheet 3 and a rear partition sheet 2 that are partitions.

[0041] The front partition sheet 3 and the rear partition sheet 2, which are partitions, are configured to overlap front and back by bending a single sheet A shown in FIG. 10 at the bent portion a1, which is a continuous boundary portion. And a fixing piece C cut and raised from the vicinity of the bent portion a1 in the single sheet A is welded to the inner surface of the front cover 11, which is another sheet.

[0042] In other words, the front partition sheet 3 and the rear partition sheet 2, which are two partitions, are provided in the storage portion sp by bending a single sheet A at the bent portion a1. And a fixing piece C cut and raised from the vicinity of the bent portion a1 in the single sheet A is fixed by welding to the inner surface of the lower portion of the front cover 11, which is another sheet.

[0043] The fixing piece C is provided so as to be cut and raised from the side of the left half portion 21 of the rear partition sheet by forming a slit a2 for forming a fixing piece that forms a substantially U shape so as to span both ends between the lower end portions of the left half portion 31 of the front partition sheet and the left half portion 21 of the rear partition sheet that constitute a single sheet A.

[0044] The slit a2 includes a horizontal slit portion a21 extending linearly in the left-right direction and vertical slit portions a22 extending from both ends of the horizontal slit portion a21 in a direction substantially orthogonal to the horizontal slit portion a21 (the direction of the rear partition sheet 2). The horizontal slit portion a21 is provided in the left half portion 31 of the front partition sheet, and the vertical slit portions a22 are provided across the left half portion 31 of the front partition sheet and the left half portion 21 of the rear partition sheet.

[0045] The base end of the fixing piece C is disposed on the left half portion 21 of the rear partition sheet. The fixing piece C is provided with a fixing piece bent portion c1 located at a height substantially coinciding with the bent portion a1 on the tip side rather than the base end. The fixing piece C is bent by the fixing piece bent portion c1, and the tip portion c2 located on the tip side thereof has a posture extending upward. The tip portion c2 of the fixing piece C is welded to the inner surface side of the front cover 1 through the lower welded piece 53 in the pocket sheet 5.

[0046] The front partition sheet 3 and the rear partition sheet 2, which are a plurality of partitions, include a left half portion 31 of the front partition sheet and a left half portion 21 of the rear partition sheet located on the left side, which is one side of the folded storage portion sp, and a right half portion 32 of the front partition sheet and a right half portion 22 of the rear partition sheet located on the right side, which is the other side.

[0047] And in this embodiment, a bending portion a1 is provided only between one-side half portions of the front partition sheet 3 and the rear partition sheet 2, that is, only between the left half portion 31 of the front partition sheet and the left half portion 21 of the rear partition sheet, and the right half portion 32 of the front partition sheet and the right half portion 22 of the rear partition sheet, which are the other-side half portions, are disposed so as to be relatively movable with respect to each other.

[0048] In other words, one sheet A is connected only between the left half portion 31 of the front partition sheet and the left half portion 21 of the rear partition sheet via the bending portion a1, and the right half portion 32 of the front partition sheet and the right half portion 22 of the rear partition sheet are separated from each other.

[0049] Note that the relative movement is a left-right movement accompanying a change in posture between the unfolded posture (T) and the closed posture (F).

[0050] <Base sheet 4> The base sheet 4 is fixed to the pocket sheet 5 fixed to the front cover 11 by welding. That is, the left half portion 41 of the base sheet is indirectly fixed to the front cover 11 via the pocket sheet 5.

[0051] The height dimension of the base sheet 4 is set to a value such that its upper end portion is located at the vertical intermediate portion of the cover 1, the rear partition sheet 2, and the front partition sheet 3. More specifically, the base sheet 4 is set to approximately half the height of the cover 1, the rear partition sheet 2, and the front partition sheet 3.

[0052] The file is configured such that the height of the base sheet 4, which is the front sheet, is lower than the heights of the front cover 1, the rear partition sheet 2, and the front partition sheet 3, which are the rear sheets. Therefore, as shown in an example in FIG. 14, in the unfolded posture (T), the upper half portions of the front partition sheet 3 and the rear partition sheet 2 arranged behind the base sheet 4 can be moved forward by the operation of the user in order to check the stored items stored in the storage portion sp.

[0053] The base sheet 4 is disposed in front of the front partition sheet 3. The base sheet 4 includes a substantially horizontally long rectangular base sheet left half portion 41 located on the left side in the unfolded posture (T), a substantially horizontally long rectangular base sheet right half portion 42 located on the right side in the unfolded posture (T), a base sheet hinge portion 43 which is a hinge portion interposed between the base sheet left half portion 41 and the base sheet right half portion 42, and a pocket lid forming piece 44 integrally extending from the upper end edge of the base sheet left half portion 41.

[0054] A left welded piece 45 extends from the left end portion of the base sheet left half portion 41. The left welded piece 45 is welded to the inner surface (more specifically, the inner surface of the left margin 54) of the left end portion of the pocket sheet 5 fixed to the front cover 11 by welding. The lower end portion of the base sheet left half portion 41 is disposed so as to be adjacent to or close to the inner surface of the pocket sheet 5 fixed to the front cover 11 by welding.

[0055] A slit E extending in the vertical direction is provided in the base sheet right half portion 42 at a position close to the base sheet hinge portion 43. A tongue piece 67 protruding from the holding sheet 6 is inserted into the slit E. The slit E and the tongue piece 67 constitute a first guide mechanism G1 which is a guide mechanism. The slit E and the tongue piece 67 are provided at a position covered from the front side by the front holding sheet portion 61 of the holding sheet 6.

[0056] The base sheet hinge portion 43 includes a central fold line s1 extending in the vertical direction and provided at substantially equal intervals in the horizontal direction, and left and right fold lines s2.

[0057] The pocket lid forming piece 44 has a folded-back protruding piece 44a protruding from its tip. The folded-back protruding piece 44a is adapted to be inserted into a slit 51b formed in the pocket sheet 5. When the folded-back protruding piece 44a is inserted into the slit 51b, the pocket lid forming piece 44 is held in a posture of closing the pocket. The folded-back protruding piece 44a is folded back along the inner surface side of the pocket lid forming piece 44, and the vicinity of its base end is welded to the inner surface of the pocket lid forming piece 44.

[0058] The right half portion 42 of the base sheet and the base sheet hinge portion 43 constituting the base sheet 4 are not directly and indirectly fixed to other sheets. In other words, the right half portion 42 of the base sheet and the base sheet hinge portion 43 are fixed to the cover 1 via the left half portion 41 of the base sheet welded to the pocket sheet 5.

[0059] <Pocket Sheet 5> The pocket sheet 5 can cooperate with the left half portion 41 of the base sheet and the pocket lid forming piece 44 protruding above the left half portion 41 of the base sheet to form a pocket capable of accommodating an article.

[0060] The pocket sheet 5 includes a pocket sheet main body 51 having a window portion 51a where a transparent film sheet fs is disposed and the inside can be visually recognized, and a slit 51b provided so as to extend in the left-right direction above the window portion 51a and into which a folded projection piece 44a provided on the pocket lid forming piece 44 can be inserted, a lower flange 52 continuously provided from the lower edge of the pocket sheet main body 51, a lower welded piece 53 continuously provided from the extending end of the lower flange 52 and fixed to the lower end portion of the front cover 11 by welding, a left flange 54 continuously provided from the left edge of the pocket sheet main body 51, a left welded piece 55 continuously provided from the extending end of the left flange 54 and fixed to the left end portion of the front cover 11 by welding, a right flange 56 continuously provided from the right edge of the pocket sheet main body 51, and a right welded piece 57 continuously provided from the extending end of the right flange 56 and fixed to the right end portion of the left half of the base sheet 41 by welding.

[0061] <Holding sheet 6> The holding sheet 6, which is the third sheet, can hold the right half of the base sheet 42 so as to be relatively movable in the left-right direction.

[0062] The holding sheet 6 includes a front holding sheet portion 61 disposed in front of the right half of the base sheet 42, a rear holding sheet portion 62 continuously provided via a bent portion 6a which is a folding portion at the upper edge of the front holding sheet portion 61 and disposed behind the right half of the base sheet 42 and in front of the right half of the front partition sheet 32, a lower flange 63 continuously provided from the lower edge of the front holding sheet portion 61, a lower welded piece 64 continuously provided from the extending end of the lower flange 63 and fixed to the lower end portion of the back cover 12 by welding, a right flange 65 continuously provided from the right edge of the front holding sheet portion 61, a right welded piece 66 continuously provided from the extending end of the right flange 65 and fixed to the right end portion of the back cover 12 by welding, and a tongue piece 67 continuously provided from the left edge of the front holding sheet portion 61 via a folding portion 67b and disposed on the rear side of the front holding sheet portion 61.

[0063] The front holding sheet portion 61 is provided with a slit 61a for holding a card, which extends obliquely in the left-right direction.

[0064] The tongue piece 67 is folded back along the inner surface side of the front holding sheet portion 61, and its proximal end portion is welded to the inner surface, that is, the back surface of the front holding sheet portion 61. The tongue piece 67 is inserted into a slit E provided in the right half portion 42 of the base sheet, and can hold the posture of the right half portion 42 of the base sheet by regulating the movement in the vertical direction while allowing the relative movement in the horizontal direction of the holding sheet 6 of the right half portion 42 of the base sheet.

[0065] A protrusion 67a is provided at the upper part of the protruding end of the tongue piece 67 to suppress the tongue piece 67 from coming out of the slit E by engaging with the opening edge of the slit E. The protrusion 67a of the tongue piece 67 can define the limit position of the relative movement in the right direction with respect to the tongue piece 67 when the right half portion 42 of the base sheet takes the closed posture (F).

[0066] <First guide mechanism G1 and second guide mechanism G2 (guide mechanism)> The first and second guide mechanisms G1 and G2 can guide the relative movement in the horizontal direction of the right half portion 42 of the base sheet, which is the first half portion of the front sheet, with respect to the back cover 12, which is the first half portion of the back sheet, in the posture change between the unfolded posture (T) in which the storage portion sp is not folded in half and the closed posture (F) in which the storage portion sp is folded in half, while suppressing the vertical displacement movement of the right half portion 42 of the base sheet.

[0067] In addition, the second half portions of the front sheet and the back sheet, that is, the front cover 11 and the left half portion 41 of the base sheet, are fixed to each other via the pocket sheet 5. In other words, the front cover 11 and the left half portion 41 of the base sheet are configured such that they can hardly move relative to each other in the horizontal direction.

[0068] The first guide mechanism G1 is composed of a slit E provided in the right half portion 42 of the base sheet 4 which is the front sheet, and a tongue piece 67 which is indirectly provided on the back cover 12 which is the right half portion of the rear sheet via the holding sheet 6 and is inserted into the vertically extending slit E formed in the right half portion 42 of the base sheet and is capable of moving forward and backward in the left-right direction.

[0069] The second guide mechanism G2 has a holding sheet 6 which is a third sheet fixed by welding to the back cover 12 which is the right half portion of the front cover 1 which is the rear sheet, and is configured such that the upper edge je of the right half portion 42 of the base sheet which is the right half portion of the front sheet can engage with the bent portion 6a formed between the front holding sheet portion 61 and the rear holding sheet portion 62 of the holding sheet 6.

[0070] <Relative position of the hinge portion> On the cover 1, a spine 13 which is a hinge portion having a plurality of folding lines, i.e., inner folding lines m1 and outer folding lines m2, is provided between the front cover 11 which is one half portion located on one side of the double-folded storage portion sp and the back cover 12 which is the other half portion located on the other side.

[0071] On the rear partition sheet 2, a rear partition sheet hinge portion 23 which is a hinge portion having a plurality of folding lines, i.e., a central folding line n1 and left and right folding lines n2, is provided between the left half portion 21 of the rear partition sheet which is one half portion located on one side of the double-folded storage portion sp and the right half portion 22 of the rear partition sheet which is the other half portion located on the other side.

[0072] On the front partition sheet 3, a front partition sheet hinge portion 33 which is a hinge portion having a plurality of folding lines, i.e., a central folding line r1 and left and right folding lines r2, is provided between the left half portion 31 of the front partition sheet which is one half portion located on one side of the double-folded storage portion sp and the right half portion 32 of the front partition sheet which is the other half portion located on the other side.

[0073] The base sheet 4 is provided with a base sheet hinge portion 43 which is a hinge portion having a central fold line s1 and left and right fold lines s2 between a left half portion 41 of the base sheet which is one half portion located on one side of the folded storage portion sp and a right half portion 42 of the base sheet which is the other half portion located on the other side.

[0074] In the unfolded posture (T) of the file of the present embodiment, the back cover 13, the rear partition sheet hinge portion 23, the front partition sheet hinge portion 33, and the base sheet hinge portion 43 are arranged in this order from the rear to the front. And the back cover 13, the rear partition sheet hinge portion 23, the front partition sheet hinge portion 33, and the base sheet hinge portion 43 are arranged at positions relatively offset in the unfolded posture (T).

[0075] More specifically, in a front view of the unfolded posture (T), the rear partition sheet hinge portion 23 which is a hinge portion is arranged at a position offset to the left of the back cover 13 which is a hinge portion, and the front partition sheet hinge portion 33 which is a hinge portion is arranged at a position offset to the left of the rear partition sheet hinge portion 23, and the base sheet hinge portion 43 which is a hinge portion is arranged at a position offset to the left of the front partition sheet hinge portion 33.

[0076] In other words, the file is provided with a first hinge portion (the rear partition sheet hinge portion 23, the front partition sheet hinge portion 33, or the base sheet hinge portion 43) having fold lines which are a plurality of folding curves between one half portion and the other half portion of the front side sheet, and a second hinge portion (the back cover 13, the rear partition sheet hinge portion 23, or the front partition sheet hinge portion 33) having fold lines which are a plurality of folding curves between one half portion and the other half portion of the rear side sheet. And the first hinge portion located in front of the second hinge portion in a front view of the unfolded posture (T) is arranged at a position offset to the left with respect to the second hinge portion located behind the first hinge portion in a front view of the unfolded posture (T).

[0077] In addition, the separation dimension between the left and right inner folding lines m1 on the back cover 13, the separation dimension between the inner folding line m1 and the outer folding line m2, the separation dimension between the central folding line n1 and the left and right folding lines n2 in the rear partition sheet hinge portion 23, the separation dimension between the central folding line r1 and the left and right folding lines r2 in the front partition sheet hinge portion 33, and the separation dimension between the central folding line s1 and the left and right folding lines s2 in the base sheet hinge portion 43 are set to be different from each other.

[0078] [Corresponding relationship with the claims] The front partition sheet 3 corresponds to the "front sheet" shown in claim 5, and the rear partition sheet 2 corresponds to the "rear sheet" shown in claim 5. The base sheet 4 corresponds to the "front sheet" shown in claim 8, and the cover 1, the rear partition sheet 2, and the front partition sheet 3 correspond to the "rear sheet" shown in claim 8.

[0079] As described above, the file according to the present embodiment has a two-foldable storage portion sp configured to include the base sheet 4 as the front sheet and the cover 1 as the rear sheet. The base sheet 4 includes a left half portion 41 of the base sheet located on the left side, which is one side of the two-folded storage portion sp, and a right half portion 42 of the base sheet located on the right side, which is the other side. Further, the cover 1 as the rear sheet includes a front cover 11 as one half portion located on the left side, which is one side of the two-folded storage portion sp, and a back cover 12 as the other half portion located on the right side. Thus, the left half portion 41 of the base sheet and the cover 1 are fixed to each other, and the right half portion 42 of the base sheet and the back cover 12 are disposed so as to be relatively movable.

[0080] Therefore, since both the base sheet 4 and the cover 1 constituting the storage portion sp enable the half portions to move relatively to each other, it is possible to provide a file configured to be able to adopt a suitable two-folded posture.

[0081] In addition, the file according to this embodiment has a foldable storage section sp composed of a front partition sheet 3 which is the front sheet and a rear partition sheet 2 which is the rear sheet. The front partition sheet 3 includes a left half portion of the front partition sheet 31 which is one half portion located on the left side which is one side of the folded storage section sp and a right half portion of the front partition sheet 32 which is the other half portion located on the right side which is the other side. Further, the rear partition sheet 2 which is the rear sheet includes a left half portion of the rear partition sheet 21 which is one half portion located on the left side which is one side of the folded storage section sp and a right half portion of the rear partition sheet 22 which is the other half portion located on the right side which is the other side. Thus, the left half portion 31 of the front partition sheet and the left half portion 21 of the rear partition sheet are fixed to each other, and the right half portion 32 of the front partition sheet and the right half portion of the rear partition sheet are arranged to be relatively movable.

[0082] Therefore, since both the front partition sheet 3 and the rear partition sheet 2 constituting the storage section sp allow the half portions to be relatively movable, it is possible to provide a file configured to be able to take a suitable two-fold posture.

[0083] First and second guide mechanisms G1 and G2, which are guide mechanisms for guiding the right half portion 42 of the base sheet and the back cover 12 to be relatively movable, are provided.

[0084] Therefore, as the right half portion 42 of the base sheet and the back cover 12 move relatively, the postures of both are hardly disturbed and an appropriate posture is maintained.

[0085] The first guide mechanism G1 is a slit E provided on the right half portion 42 of the base sheet and a tongue piece 67 which is indirectly provided via a holding sheet 6 fixed to the back cover 12 and inserted into the slit E.

[0086] Therefore, the first guide mechanism G1 can preferably guide the relative movement while maintaining the posture by utilizing the configuration in which the right half portion 42 of the base sheet and the back cover 12 are engaged with the slit E and the tongue piece 67.

[0087] The second guide mechanism G2 has a holding sheet 6 which is another sheet provided on the back cover 12, and is configured such that the upper edge je of the right half portion 42 of the base sheet can engage with the bent portion 6a formed on the holding sheet 6.

[0088] Therefore, the second guide mechanism G2 is guided by the holding sheet 6, and the forward and backward movement and upward displacement movement of the right half portion 42 of the base sheet are appropriately suppressed.

[0089] The front partition sheet 3 and the rear partition sheet 2 are configured by folding a single sheet A at the folding portion a1.

[0090] Therefore, the number of parts for forming the file is preferably suppressed.

[0091] A fixing piece C raised from the vicinity of the folding portion a1 of a single sheet A is welded to the front cover 1 which is another sheet.

[0092] Therefore, a single sheet A having the front partition sheet 3 and the rear partition sheet 2 is preferably attached to the front cover 1.

[0093] A file configured to be openable and closable between an unfolded posture (T) in which the storage portion sp is not folded in half and a closed posture (F) in which the storage portion sp is folded in half, having a base sheet hinge portion 43 as a first hinge portion having central and left and right fold lines s1, s2 which are a plurality of fold lines between the left half portion 41 of the base sheet and the right half portion 42 of the base sheet, and having a back cover 13 as a second hinge portion having inner fold line m1 and outer fold line m2 which are a plurality of fold lines between the front cover 11 and the back cover 12, and the base sheet hinge portion 43 and the back cover 13 are disposed at positions relatively displaced in the unfolded posture (T).

[0094] Therefore, in the closed position (F), the relative position between the base sheet hinge portion 43 and the back cover 13 is excellent in terms of design freedom, resulting in a suitable configuration.

[0095] A file configured to be openable and closable between an unfolded position (T) where the storage section sp is not folded in half and a closed position (F) where the storage section sp is folded in half. A partition sheet hinge portion 33, which is a first hinge portion having central and left and right fold lines r1, r2, which are a plurality of fold curves, is provided between the left half portion 31 and the right half portion 32 of the partition sheet. A rear partition sheet hinge portion 23, which is a second hinge portion having central and left and right fold lines n1, n2, which are a plurality of fold curves, is provided between the left half portion 21 and the right half portion 22 of the rear partition sheet. The partition sheet hinge portion 33 and the rear partition sheet hinge portion 23 are disposed at positions relatively offset in the unfolded position (T).

[0096] Therefore, in the closed position (F), the relative position between the base sheet hinge portion 43 and the back cover 13 is excellent in terms of design freedom, resulting in a suitable configuration.

[0097] The height dimension of the base sheet 4 is set to a value such that its upper end portion is located at the vertical middle portion of the cover 1.

[0098] Therefore, the legibility of the document P stored in the storage section sp is excellent. In this embodiment, a rear partition sheet 2 and a front partition sheet 3 having height dimensions approximate to those of the cover 1 are disposed in front of the cover 1. Therefore, in order to view the inside of the storage section sp, it is possible to flexibly perform a deformation such that the vertical middle portions of the rear partition sheet 2 and the front partition sheet 3 are bent in the unfolded position (T) and the upper half portions of the respective partition sheets 2, 3 are positioned in front of the base sheet.

[0099] The storage part sp is configured to be openable and closable between an unfolded posture (T) in which it is not folded in half and a closed posture (F) in which the storage part sp is folded in half, and the relative movement is a lateral movement made along with the posture change between the unfolded posture (T) and the closed posture (F). Therefore, along the direction of the natural left - right opening and closing operation of the user, the back cover 12 that constitutes one - half of the rear sheet, the right - hand half 42 of the base sheet that constitutes one - half of the front sheet, and the right - hand half 22 of the rear partition sheet and the right - hand half 32 of the front partition sheet that constitute either the rear sheet or the front sheet are capable of relative movement in the lateral direction.

[0100] Note that the present invention is not limited to the embodiments described in detail above.

[0101] The front sheet and the rear sheet that constitute the foldable storage part are not limited to those shown in the above - described embodiments. As long as the front sheet and the rear sheet face each other and a foldable storage part (storage space) is provided between them, any form may be used.

[0102] The front sheet and the rear sheet only need to be capable of forming a storage part and be arranged one in front of the other. In the above - described embodiments, when the front sheet is the cover, the rear sheet can correspond to any of the rear partition sheet, the front partition sheet, and the base sheet. When the front sheet is the rear partition sheet, the rear sheet can correspond to any of the front partition sheet and the base sheet. When the front sheet is the front partition sheet, the rear sheet can correspond to the base sheet.

[0103] The front sheet and the rear sheet may be capable of forming a storage part and constitute a front - to - back relationship of directly facing each other. For example, the file may have a configuration in which the cover as the rear sheet and the base sheet as the front sheet directly face each other without an intervening partition therebetween.

[0104] For example, it may have a configuration as shown in FIG. 16.

[0105] What is shown in FIG. 16 is a holder that is bound to a file. The holder can hold the document P by sandwiching it in the storage part sp. The holder is provided with a storage part sp that can be folded in half in the vertical center part composed of a front holder sheet 7 that is the front sheet and a rear holder sheet 8 that is the rear sheet. The holder has a binding leg insertion hole 8a at the side end of the rear holder sheet 8 and is supported by a file body with binding legs (not shown).

[0106] The front holder sheet 7 includes a lower half part 71 of the front holder sheet located below on one side of the folded storage part and an upper half part 72 of the front holder sheet located above on the other side. The rear holder sheet 8 includes a lower half part 81 of the rear holder sheet located below on one side of the folded storage part sp and an upper half part 82 of the rear holder sheet located above on the other side.

[0107] The lower half part 71 of the front holder sheet and the lower half part 81 of the rear holder sheet are fixed to each other at a welding part y1 arranged on the right side, and the upper half part 72 of the front holder sheet and the upper half part 82 of the rear holder sheet are arranged to be relatively movable.

[0108] A guide mechanism G3 for guiding the upper half part 72 of the front holder sheet and the upper half part 82 of the rear holder sheet to be relatively movable is provided between the upper half part 72 of the front holder sheet and the upper half part 82 of the rear holder sheet. The guide mechanism G3 includes a rail part 72a extending in the vertical direction provided on the side part of the upper half part 72 of the front holder sheet and a rail holding part 82a provided on the upper half part 82 of the rear holder sheet for holding the rail part 72a so as to be relatively movable in the vertical direction. Even with such a configuration, the intended purpose can be achieved.

[0109] The fixation of the front sheet and the rear sheet is not limited to welding, and includes fixation by various fixing means. For example, the front sheet and the rear sheet may be fixed via an adhesive or a fixture.

[0110] The fixation of the front sheet and the rear sheet includes fixing one of the front sheet and the rear sheet to another sheet material fixed to the other.

[0111] The guide mechanism only needs to be able to guide the other half portion of the front sheet and the other half portion of the rear sheet so as to be relatively movable, and is not limited to that shown in the above-described embodiment.

[0112] The guide mechanism may have a configuration in which a tongue piece is provided on the base sheet side and a slit into which the tongue piece is inserted is provided on the holding sheet side fixed to the cover.

[0113] In addition, the specific configuration of each part is not limited to the above-described embodiment, and various modifications are possible without departing from the gist of the present invention.

Explanation of Reference Numerals

[0114] 1... Cover (rear sheet) 2... Rear partition sheet (rear sheet · front sheet) 3... Front partition sheet (rear sheet · front sheet) 4... Base sheet (front sheet) 5... Pocket sheet 6... Holding sheet G1... First guide mechanism (guide mechanism) G2... Second guide mechanism (guide mechanism)

Claims

1. A file having a foldable storage portion composed of a front sheet and a rear sheet, wherein the front sheet includes one half portion located on one side of the folded storage portion and the other half portion located on the other side, the rear sheet includes one half portion located on one side of the folded storage portion and the other half portion located on the other side, one half portion of the front sheet and one half portion of the rear sheet are fixed to each other, the other half portion of the front sheet and the other half portion of the rear sheet are arranged to be relatively movable, a guide mechanism for guiding the other half portion of the front sheet and the other half portion of the rear sheet to be relatively movable is provided, the guide mechanism has another sheet provided on the other half portion of the rear sheet, and an upper edge portion of the other half portion of the front sheet can engage with a bent portion formed on the other sheet. A file having such a configuration.

2. A file having a foldable storage portion composed of a front sheet and a rear sheet, wherein the front sheet includes one half portion located on one side of the folded storage portion and the other half portion located on the other side, the rear sheet includes one half portion located on one side of the folded storage portion and the other half portion located on the other side, one half portion of the front sheet and one half portion of the rear sheet are fixed to each other, the other half portion of the front sheet and the other half portion of the rear sheet are arranged to be relatively movable, the height dimension of the front sheet is set to a value such that its upper end portion is located at the vertical middle portion of the rear sheet. A file.

3. A file having a foldable storage portion composed of a front sheet and a rear sheet, wherein the storage portion is configured to be openable and closable between an unfolded posture where it is not folded and a closed posture where the storage portion is folded in half, the front sheet includes one half portion located on one side of the folded storage portion and the other half portion located on the other side, The rear sheet includes one half portion located on one side of the folded storage portion and the other half portion located on the other side, One half portion of the front sheet and one half portion of the rear sheet are fixed to each other, A file in which the other half portion of the front sheet and the other half portion of the rear sheet are arranged to be relatively movable in accordance with a change in posture between the unfolded posture and the closed posture.

4. The file according to claim 2 or 3, further comprising a guide mechanism for guiding relative movement between the other half portion of the front sheet and the other half portion of the rear sheet.

5. The file according to claim 4, wherein the guide mechanism includes a slit provided directly or indirectly on either one of the other half portion of the front sheet and the other half portion of the rear sheet, and a tongue piece provided directly or indirectly on the other and inserted into the slit.

6. The file according to claim 4, wherein the guide mechanism includes another sheet provided on the other half portion of the rear sheet, and an upper edge portion of the other half portion of the front sheet is engageable with a bent portion formed on the other sheet.

7. The file according to claim 1, 2 or 3, wherein the front sheet and the rear sheet are formed by folding a single sheet at a folding portion.

8. The file according to claim 7, wherein a fixing piece cut and raised from the vicinity of the folding portion of the single sheet is welded to another sheet.

9. A file configured to be openable and closable between an unfolded posture in which the storage portion is not folded in half and a closed posture in which the storage portion is folded in half, A first hinge portion having one or more folding lines is provided between the one half portion and the other half portion of the front sheet, A second hinge portion having one or more folding lines is provided between the one half portion and the other half portion of the rear sheet, The file according to claim 1, 2 or 3, wherein the first hinge portion and the second hinge portion are arranged at positions relatively shifted in the unfolded posture.

10. A file configured to be openable and closable between an unfolded posture in which the storage portion is not folded in half and a closed posture in which the storage portion is folded in half, The file according to claim 1, 2, 3, 4, 5, 6, 7, 8 or 9, wherein the relative movement is a lateral movement made in association with a change in posture between the deployed posture and the closed posture.

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