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 by appropriately guiding relative movement of the front side sheet and the rear side sheet.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, and is provided with guide mechanisms (first guide mechanism G1 and second guide mechanism G2) for permitting relative movement of a base sheet right piece half part 42 as at least a first piece half part when double-folded and a back cover 12.SELECTED DRAWING: Figure 14

Description

Technical Field

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

Background Art

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

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

[0004] The developers have found that if the relative movement of the front sheet and the rear sheet can be appropriately guided in a predetermined direction in at least one of the half portions when the file is folded in half, both the front sheet and the rear sheet can 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 by appropriately guiding the relative movement of the front sheet and the rear sheet constituting the storage portion, both the front sheet and the rear sheet can take a suitable double-folded posture. The object is to provide a configured file.

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 is located behind the front sheet and a rear sheet, and having a guide mechanism that allows relative movement when folded in half between the front sheet and the rear sheet when folded in half in the first half part of the front sheet and the first half part of the rear sheet the front sheet of the first half part in the rear sheet with respect to the first half part in is provided with a guide mechanism that allows relative movement

[0009] The invention according to claim 2 is the file according to claim 1, wherein the guide mechanism is a slit provided directly or indirectly on either the front sheet or the rear sheet, and a tongue piece provided directly or indirectly on the other and inserted into the slit

[0010] The invention according to claim 3 is the file according to claim 1, wherein the guide mechanism is a third sheet fixed to the rear sheet and having a bent portion that can engage with the upper edge portion of the front sheet

[0011] The invention according to claim 4 is the file according to claim 1, 2 or 3, wherein the second half portions of the front sheet the second half part of and the and the rear sheet are fixed to each other

[0012] The invention according to claim 5 is the file according to claim 4, wherein the front sheet includes a left front sheet portion that is the second half portion and a right front sheet portion that is the first half portion, and the rear sheet is a cover including a back cover that is the first half portion and a front cover that is the second half portion

[0013] The invention according to claim 6 is the file according to claim 5, wherein the guide mechanism includes a slit provided on the right front sheet portion and a tongue piece provided on a third sheet fixed to the back cover and inserted into the slit

[0014] The invention according to claim 7 is a file according to claim 1, 2, 3, 4, 5 or 6, wherein the front sheet is set to have a shorter vertical dimension than the cover constituting the rear sheet.

[0015] The invention according to claim 8 is 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, wherein the relative movement is a lateral movement made in association with a change in posture between the unfolded posture and the closed posture, and is a file according to claim 1, 2, 3, 4, 5, 6 or 7.

Advantages of the Invention

[0016] As described above, according to the present invention, it is possible to provide a file configured such that at least both the front sheet and the rear sheet constituting the storage portion can take a suitable folded-in-half posture by appropriately guiding the relative movement between the front sheet and the rear sheet.

Brief Description of the Drawings

[0017]

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

[0018] 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 symbol y. Also, the left - right and up - down directions in the specification are shown for convenience of explanation.

[0019] This embodiment applies the present invention to a file provided with a two - foldable storage part sp that can accommodate documents P such as sheets of paper.

[0020] The file has a two - foldable storage part sp composed of a base sheet 4 which is the front sheet and a cover 1 which is a rear sheet located behind the base sheet 4.

[0021] The file is configured to be able to open and close 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 11 and a back cover 12, and is in an unfolded posture (T) which is a double-page spread posture in which the front cover 11 and the back cover 12 can be unfolded so as to be substantially flush, and a closed posture (F) in which the inner surfaces of the front cover 11 and the back cover 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 these postures with the rotation center.

[0022] The file includes a cover 1 having a front cover 11 which is the left half part and a back cover 12 which is the right half part, a plurality of, namely, 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 4, which is the left half part of the base sheet 41, and capable of forming a pocket for 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 4, which 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.

[0023] 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, namely, the back cover 12.

[0024] <Cover 1> The cover 1 is substantially horizontally long rectangular as a whole. The cover 1 is made of a sheet material which is thicker than other sheets, namely, the front partition sheet 3, the rear partition sheet 2, the base sheet 4, the pocket sheet 5, and the holding sheet 6.

[0025] 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 spine 13 which is a hinge portion interposed between the front cover sheet 11 and the back cover sheet 12.

[0026] At the upper edge portion of the front cover sheet 11, a recessed portion 11a is formed where a rubber band B provided on the spine 13 can engage in the closed posture (F). Further, at the upper edge portion of the front cover sheet 11, a notch portion 11b is formed at a position corresponding to a rear finger hook projection 21a projecting from the upper end portion of the rear partition sheet 2 and a front finger hook projection 31a projecting from the upper end portion of the front partition sheet 3.

[0027] At both ends of the rubber band B for holding the closed posture (F) on the outer surface side, they are attached to the back cover sheet 12 via known attachment means. At the upper end portion of the back cover sheet 12, a recessed portion 12a where the rubber band B can engage is formed, similar to the front cover sheet 11.

[0028] The spine 13 entirely constitutes a hinge portion. The spine 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 disposed outside each of the pair of left and right inward folding lines m1. The spine 13 includes a spine main body 13a provided between the pair of left and right inward folding lines m1, and side end auxiliary portions 13b provided on both side portions of the spine main body 13a and located between the inward folding line m1 and the outward folding line m2.

[0029] <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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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 or 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.

[0034] <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 in the shape of a horizontally long rectangular sheet as a whole. 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.

[0035] 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 protruded 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). A punching hole D is formed at the lower part of the left half 31 of the front partition sheet along with the formation of the fixing piece C.

[0036] The right half 32 of the front partition sheet is provided with a front end recess 32a that recesses the lower half of the right edge toward the front partition sheet hinge portion 33 side. The front end recess 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.

[0037] The front partition sheet hinge portion 33 includes a center and left and right fold lines r1, r2 extending in the vertical direction and provided at substantially equal intervals in the horizontal direction.

[0038] 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 or 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.

[0039] 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.

[0040] 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 a bent portion a1 that is a continuous boundary portion. And a fixing piece C 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.

[0041] 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 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.

[0042] The fixing piece C is provided so as to be able to be 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 across both ends between the lower ends 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.

[0043] 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.

[0044] 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 to be welded to the inner surface side of the front cover 1 through the lower welded piece 53 in the pocket sheet 5.

[0045] 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 double-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.

[0046] And in this embodiment, a bending portion a1 is provided only between one 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 half portions, are arranged to be relatively movable with respect to each other.

[0047] 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.

[0048] 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).

[0049] <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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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 abut or be close to the inner surface of the pocket sheet 5 fixed to the front cover 11 by welding.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] <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.

[0059] The pocket sheet 5 includes a pocket sheet body 51 having a window portion 51a where a transparent film sheet fs is disposed and the inside of which is visible, and a slit 51b provided above the window portion 51a so as to extend in the left-right direction 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 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 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 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.

[0060] <Holding sheet 6> The holding sheet 6, which is the third sheet, is capable of holding the right half of the base sheet 42 so as to be relatively movable in the left-right direction.

[0061] 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 serving as 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.

[0062] The front holding sheet portion 61 is provided with a slit 61a for holding a card, which extends obliquely in the left-right direction.

[0063] The tongue piece 67 is folded back along the inner surface side of the front holding sheet portion 61, and the vicinity of its base end portion is welded to the inner surface, i.e., the back surface, of the front holding sheet portion 61. The tongue piece 67 is inserted into the 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.

[0064] At the upper part of the protruding end of the tongue piece 67, a protrusion 67a is provided which engages with the opening edge of the slit E to prevent the tongue piece 67 from coming out 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).

[0065] <The first guide mechanism G1 and the 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 rear sheet during 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 displacement movement in the vertical direction of the right half portion 42 of the base sheet.

[0066] In addition, the second half portions of the front sheet and the rear 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 there is almost no relative movement in the horizontal direction.

[0067] The first guide mechanism G1 is constituted by 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 via a holding sheet 6 on the right half portion of the back cover 12 which is the right half portion of the rear sheet, 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.

[0068] 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 a bent portion 6a formed between the front holding sheet portion 61 and the rear holding sheet portion 62 of the holding sheet 6.

[0069] <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.

[0070] 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.

[0071] 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.

[0072] 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.

[0073] 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 relatively offset positions in the unfolded posture (T).

[0074] More specifically, in the 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. 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.

[0075] 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 a plurality of fold lines, which are fold curves, between one half portion and the other half portion of the front 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 a plurality of fold lines, which are fold curves, is provided between one half portion and the other half portion of the rear sheet. And the first hinge portion located in front of the second hinge portion in the front view of the unfolded posture (T) is arranged at a position offset to the left of the second hinge portion located behind the first hinge portion in the front view of the unfolded posture (T).

[0076] 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.

[0077] As described above, the file according to this embodiment has a two-foldable storage portion sp configured to include a base sheet 4 as a front sheet and a cover 1 as a rear sheet. And the file is provided with first and second guide mechanisms G1, G2 which are guide mechanisms that allow relative movement between the right half portion 42 of the base sheet and the back cover 12, which are at least the first half portion when folded in two.

[0078] Therefore, in this embodiment, due to the guiding action in a predetermined direction by the first and second guide mechanisms G, the relative movement between the right half portion 42 of the base sheet and the back cover 12 is appropriately guided, and a file can be provided that is configured such that both the base sheet 4 and the cover 1 can take a suitable two-fold posture.

[0079] The first guide mechanism G1 includes a slit E provided in the right half portion 42 of the base sheet and a tongue piece 67 that is indirectly provided with respect to the back cover 12 via the holding sheet 6 and is inserted into the slit E.

[0080] Therefore, the first guide mechanism G1 can preferably guide the relative movement in a predetermined direction between the right half portion 42 of the base sheet and the back cover 12 by the engagement between the slit E and the tongue piece 67.

[0081] The second guide mechanism G2 is a holding sheet 6 as a third sheet that has a bent portion 6a fixed to the back cover 12 and capable of engaging with the upper edge portion je of the right half portion 42 of the base sheet.

[0082] Therefore, the second guide mechanism G2 is configured to preferably guide the relative movement in a predetermined direction between the right half portion 42 of the base sheet and the back cover 12 by the engagement between the upper edge je of the right half portion 42 of the base sheet and the bent portion 6a of the holding sheet 6.

[0083] The left half portion 41 of the base sheet and the front cover 1, which are the second half portions of the front sheet, the base sheet 4 and the back sheet, the cover 1, are fixed to each other.

[0084] Therefore, even when the storage portion sp is folded in half, the left half portion 41 of the base sheet and the front cover 1 are stably held at a fixed relative position.

[0085] The front sheet, the base sheet 4, is set to have a shorter vertical dimension than the back sheet, the cover 1.

[0086] Therefore, the readability of the document P stored in the storage portion sp is excellent. In this embodiment, a rear partition sheet 2 and a front partition sheet 3 having a height dimension approximating that of the cover 1 are disposed in front of the cover 1. Therefore, in order to view the inside of the storage portion sp, it is possible to flexibly perform a deformation such that the middle portion in the vertical direction of the rear partition sheet 2 and the front partition sheet 3 is bent in the unfolded posture (T) and the upper half portions of the respective partition sheets 2 and 3 are positioned in front of the base sheet.

[0087] The storage portion sp is configured to be openable and closable 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, and the relative movement is a lateral movement that occurs with the posture change between the unfolded posture (T) and the closed posture (F).

[0088] 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 can move relative to each other in the left - right direction, and the first and second guide mechanisms G1, G2 can preferably guide the relative movement in the left - right direction.

[0089] Note that the present invention is not limited to the embodiments described in detail above.

[0090] Needless to say, the guide mechanism can adopt various configurations.

[0091] For example, the guide mechanism may have a configuration as shown in FIG. 16.

[0092] 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 two at the vertical center part including the front holder sheet 7 which is the front sheet and the rear holder sheet 8 which 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).

[0093] The front holder sheet 7 includes a lower - hand half 71 of the front holder sheet located below on one side of the folded - in - two storage part sp and an upper - hand half 72 of the front holder sheet located above on the other side. The rear holder sheet 8 includes a lower - hand half 81 of the rear holder sheet located below on one side of the folded - in - two storage part sp and an upper - hand half 82 of the rear holder sheet located above on the other side.

[0094] The lower half portion 71 of the front holder sheet and the lower half portion 81 of the rear holder sheet are fixed to each other at the welding portion y1 disposed on the right side, and the upper half portion 72 of the front holder sheet and the upper half portion 82 of the rear holder sheet are disposed so as to be relatively movable in a predetermined direction by the guide mechanism G3.

[0095] A guide mechanism G3 for guiding the upper half portion 72 of the front holder sheet and the upper half portion 82 of the rear holder sheet so as to be relatively movable is provided between the upper half portion 72 of the front holder sheet and the upper half portion 82 of the rear holder sheet. The guide mechanism G3 includes a rail portion 72a extending in the vertical direction provided on the side portion of the upper half portion 72 of the front holder sheet, and a rail holding portion 82a provided on the upper half portion 82 of the rear holder sheet and holding the rail portion 72a so as to be relatively movable in the vertical direction. Even with such a configuration, the intended purpose can be achieved.

[0096] The predetermined direction of the relative movement allowed by the guide mechanism is not limited to the left-right direction, and may be the up-down direction.

[0097] The guide mechanism may be provided not only on the first half portion but also on the second half portion when folded in two.

[0098] Of course, the front sheet and the rear sheet are not limited to the base sheet or the cover.

[0099] The guide mechanism may be such that a tongue piece is provided directly or indirectly on the front sheet, and a slit into which the tongue piece is inserted directly or indirectly is provided on the rear sheet.

[0100] The third sheet is not limited to the holding sheet, and may be any sheet as long as it has a bent portion that can engage with the upper edge portion of the front sheet.

[0101] The second half portions of the front sheet and the rear sheet may not be fixed to each other.

[0102] In addition, the specific configurations of each part are not limited to the above embodiments, and various modifications can be made without departing from the spirit of the present invention.

Description of Reference Numerals

[0103] 1... Cover (rear sheet) 4... Base sheet (front sheet) 42... Right half portion of the base sheet (first half portion) E... Slit je... Upper edge portion 6... Holding sheet 6a... Bent portion 67... Tongue piece G1... First guide mechanism (guide mechanism) G2... Second guide mechanism (guide mechanism)

Claims

1. A file comprising a front sheet and a rear sheet located behind the front sheet, and having a foldable storage portion between the front sheet and the rear sheet, A file provided with a guide mechanism that allows relative movement of the first half portion of at least the front sheet and the first half portion of the rear sheet when folded in half, with respect to the first half portion of the rear sheet in the first half portion of the front sheet.

2. The file according to claim 1, wherein the guide mechanism includes a slit provided directly or indirectly on either the front sheet or the rear sheet, and a tongue piece provided directly or indirectly on the other sheet and inserted into the slit.

3. The file according to claim 1, wherein the guide mechanism is a third sheet fixed to the rear sheet and having a bent portion that can engage with the upper edge portion of the front sheet.

4. The file according to claim 1, 2 or 3, wherein the second half portion of the front sheet and the second half portion of the rear sheet are fixed to each other.

5. The front sheet includes a left front sheet portion that is the second half portion and a right front sheet portion that is the first half portion, The file according to claim 4, wherein the rear sheet is a cover including a back cover that is the first half portion and a front cover that is the second half portion.

6. The file according to claim 5, wherein the guide mechanism includes a slit provided in the right front sheet portion and a tongue piece provided in a third sheet fixed to the back cover and inserted into the slit.

7. The file according to claim 1, 2, 3, 4, 5 or 6, wherein the front sheet is set to have a shorter vertical dimension than the cover constituting the rear sheet.

8. The storage portion is configured to be openable and closable between an unfolded posture where it is not folded in half and a closed posture where it is folded in half, The file according to claim 1, 2, 3, 4, 5, 6 or 7, wherein the relative movement is a lateral movement that occurs with a change in posture between the unfolded posture and the closed posture.

Images