file

Abstract

To provide a file that is excellent in easiness of holding when being in a spread posture and can suitably hold a sheet such as paper by sandwiching it between a cover body and a sheet body.SOLUTION: A file includes: a cover body A having a front cover 1 and a back cover 2 connected via a first folding portion M and configured to take a spread posture (T) in which the front cover 1 and the back cover 2 can be spread so as to be substantially flush with each other and a folded posture (F) in which respective inner surfaces of the front cover 1 and the back cover 2 face each other; and a holder J serving as a sheet body which is configured to be capable of being spread with respect to the cover body A via a second folding portion U only when being fixed to the cover body A and in the spread posture (T). The first folding portion M can take a form projecting outward in the spread posture (T).SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to files. [Background technology]

[0002] BACKGROUND ART Various files that are configured to be able to take an open position and a closed position have been known (see, for example, Patent Document 1).

[0003] In this type of file, the entire outer surface of the cover is generally flat when in the unfolded position.

[0004] However, with a file of this configuration, it is difficult for the user to place their fingers on the outer surface of the cover when the file is in the unfolded position, which makes it difficult to handle when the file is in the unfolded position.

[0005] Furthermore, for the sake of portability, it is desirable for the file to have a structure that allows it to hold paper sheets and other such paper in a suitable manner. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Utility Model Registration No. 3227354 Summary of the Invention [Problem to be solved by the invention]

[0007] The present invention has been made with the above-mentioned circumstances in mind, and aims to provide a file that is easy to hold at least in the unfolded position and can suitably hold paper sheets and other such materials by sandwiching them between the cover body and the sheet body. [Means for solving the problem]

[0008] That is, the present invention has the following configuration.

[0009] The invention described in claim 1 is a file comprising a cover body having a front cover and a back cover connected via a first folding portion, and configured to be capable of adopting an unfolded position in which the front cover and the back cover are unfolded so that they are substantially flush with each other, and a closed position in which the inner surfaces of the front cover and the back cover face each other, and a sheet body fixed to the cover body and configured to be unfoldable relative to the cover body via a second folding portion only when the file is in the unfolded position, and the first folding portion can be configured to protrude outward in the unfolded position. The cover body has a first support piece connected to the front cover via a first bent portion and a second support piece connected to the back cover via a second bent portion, and the sheet body is fixed to the first and second support pieces. It is a file.

[0010] The invention described in claim 2 is A file comprising a cover body having a front cover and a back cover connected via a first folding portion, the cover body being configured to be capable of taking an unfolded position in which the front cover and the back cover are unfolded so that they are substantially flush with each other, and a closed position in which the inner surfaces of the front cover and the back cover face each other, and a sheet body fixed to the cover body and configured to be unfoldable relative to the cover body via a second folding portion only when the file is in the unfolded position, the first folding portion being capable of taking a form that protrudes outward in the unfolded position, and the second folding portion extending in a direction that intersects with the first folding portion. It is a file.

[0011] The invention described in claim 3 is A file comprising: a cover body having a front cover and a back cover connected via a first folding portion, the cover body being configured to be capable of assuming an unfolded position in which the front cover and the back cover are unfolded so that they are substantially flush with each other, and a closed position in which the inner surfaces of the front cover and the back cover face each other; and a sheet body fixed to the cover body and configured to be unfoldable relative to the cover body via a second folding portion only when the file is in the unfolded position, wherein the first folding portion can assume a form that protrudes outward in the unfolded position, and the first folding portion has a pair of outer fold lines formed at the boundary between the front cover and the back cover, and a pair of inner fold lines formed inside the pair of outer fold lines that are parallel to the pair of outer fold lines, and the portion between the outer fold lines and the inner fold lines can assume a position that stands up relative to the front cover and the back cover in the unfolded position. It is a file.

[0012] The invention described in claim 4 is A file comprising: a cover body having a front cover and a back cover connected via a first folding portion, configured to be capable of adopting an unfolded position in which the front cover and the back cover are unfolded so that they are substantially flush with each other, and a closed position in which the inner surfaces of the front cover and the back cover face each other; and a sheet body fixed to the front cover and the back cover and configured to be unfolded relative to the front cover and the back cover via a second folding portion only when the file is in the unfolded position, wherein the first folding portion can be configured to protrude outward in the unfolded position. It is a file.

[0013] The invention described in claim 5 is A notch is formed between the first bent portion and the second bent portion. The file according to claim 1.

[0014] The invention described in claim 6 is characterized in that the sheet body is welded to the first support piece and the second support piece, respectively, and is configured so that the base end edge of the front cover and the base end edge of the back cover do not separate from each other when transitioning from the closed position to the unfolded position. 1 or 5 The file is as described.

[0015] The invention described in claim 7 is a claim in which the object to be bound is supported by the first support piece and the second support piece via a binding member. 1 , 5 Or it is a file described in 6. [Effects of the Invention]

[0016] As described above, according to the present invention, it is possible to provide a file that is easy to hold at least in the unfolded position and that can suitably hold paper sheets and other such materials by sandwiching them between the cover body and the sheet body. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is a front view of an embodiment of the present invention in a folded position (closed position). [Figure 2] FIG. 2 is a front view of the deployed posture in the same embodiment (with the holder in the deployed position). [Figure 3] FIG. 2 is a front view of the embodiment (with the holder in the covering position). [Figure 4] FIG. [Figure 5] FIG. [Figure 6] Schematic cross-sectional view taken along line XX in FIG. 2. [Figure 7] Schematic cross-sectional view of line YY in FIG. 2. [Figure 8] Schematic cross-sectional view taken along line ZZ in FIG. 3. [Figure 9] 9 is a schematic cross-sectional view corresponding to FIG. 8 for explaining a state in which the holder in this embodiment is in an outer position. FIG. [Figure 10] FIG. 4 is a front view illustrating the structure of the cover body in the embodiment. [Figure 11] FIG. 4 is a front view for explaining the structure of a clear pocket (bound body) in the embodiment. [Figure 12] FIG. 2 is a front view for explaining the structure of the holder (cover body / sheet body) in this embodiment. [Figure 13] 2 is a schematic cross-sectional view taken along the line WW in FIG. 1. [Figure 14] FIG. 7 is an enlarged view of the central portion in the vertical direction in FIG. 6. [Figure 15] FIG. 10 is a front view showing a holder (cover body / sheet body) according to another embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0018] An embodiment of the present invention will now be described with reference to Figures 1 to 13. In the figures, the welded portion (welded section) is designated by the symbol y.

[0019] In this embodiment, the present invention is applied to a file that is configured to be able to assume an unfolded position (T) and a folded position (F), which is a closed position that is folded in half from the unfolded position (T).

[0020] The file comprises a cover body A having a front cover 1 and a back cover 2 connected via a first folding portion M, a clear pocket E which is a binding body provided on the inside side of the cover body A, and a holder J which is a cover body / sheet body arranged between the front cover 1 and the back cover 2 and fixed to the cover body A so as to cover almost the entire clear pocket E.

[0021] The clear pocket E supported by the cover body A can store paper sheets such as documents (not shown) inside. The holder J, which is fixed to the cover body A and can cover the clear pocket E, can hold documents by sandwiching them between the base sheet 3 and the cover sheet 4.

[0022] The file can be used in a way that allows the user to freely select whether the documents are stored in the clear pocket E, held in the holder J, or held between the holder J and the cover body A, depending on the frequency of use and purpose of the documents.

[0023] The file has a cover body A having a first folding portion M and capable of taking an unfolded position (T) and a folded position (F), and a holder J having a second folding portion U and capable of taking an unfolded position (S) and a covered position (B), and by cooperating the cover body A and the holder J, the file can be folded into four.

[0024] The file is configured to be capable of taking an unfolded position (T) in which the front cover 1 and the back cover 2 are substantially flush with each other, i.e., the front cover 1 and the back cover 2 are positioned on substantially the same imaginary plane, and a folded position (F) in which the inner surfaces of the front cover 1 and the back cover 2 face each other. The first folded portion M of the cover body A can take a form that protrudes outward in the unfolded position (T).

[0025] The file is configured so that the cover body A, the clear pocket E, and the holder J can be folded in half as a unit so that the file can take the folded position (F).

[0026] Each file structure will be described in detail below.

[0027] <Cover A> The cover body A comprises a front cover 1 and a back cover 2 connected via a first folding portion M, a first binding piece C which is a first support piece connected to the front cover 1 via a first bending portion c2, and a second binding piece D which is a second support piece connected to the back cover 2 via a second bending portion d2.

[0028] The cover body A is configured to be able to take an unfolded position (T) in which the front cover 1 and the back cover 2 can be unfolded so that they are positioned on approximately the same imaginary plane, and a folded position (F) in which the inner surfaces of the front cover 1 and the back cover 2 can face each other via a clear pocket E and a holder J.

[0029] [Front cover 1] The front cover 1 is a generally horizontally elongated rectangle that constitutes the upper half of the unfolded position (T). The front cover 1 is generally the same size as the back cover 2. The right edge of the front cover 1 is provided with a recess 11 that engages with a bundling rubber band Q attached to the back cover 2 when the book is in the folded position (F).

[0030] [Back cover 2] The back cover 2 is a generally horizontally elongated rectangle that constitutes the lower half of the book in the unfolded position (T). The back cover 2 is generally the same size as the front cover 1. A rubber band Q is attached to the back cover 2 to bind the front cover 1 and back cover 2 together when the book is in the folded position (F). A recess 21 is provided on the right side edge of the back cover 2 that engages with the rubber band Q when the book is in the folded position (F).

[0031] [First bending part M] The first folding portion M is interposed between the front cover 1 and the back cover 2. The first folding portion M connects the front cover 1 and the back cover 2. In this embodiment, the front cover 1 and the back cover 2 are connected only by the first folding portion M. The first folding portion M as a whole forms a hinge portion. The first folding portion M can also function as a spine.

[0032] The first folding portion M comprises a pair of upper and lower outer fold lines m1 extending in the left-right direction formed at the boundary between the front cover 1 and the back cover 2, and a pair of inner fold lines m2 extending in the left-right direction and formed inside the pair of outer fold lines m1, approximately parallel to the outer fold lines m1.

[0033] In other words, the first folding portion M has a central plate-shaped portion m3 located between a pair of upper and lower inner fold lines m1, and an upper plate-shaped portion m4 and a lower plate-shaped portion m5 located above and below the central plate-shaped portion m3 and between the outer fold line m1 and the inner fold line m2.

[0034] In the unfolded position (T), the first folded portion M can adopt a position in which an upper plate-like portion m4 and a lower plate-like portion m5, which are portions between the outer fold line m1 and the inner fold line m2, stand up in a direction approximately perpendicular to the front cover 1 and the back cover 2. In addition, in the unfolded position (T), the first folded portion M can adopt a position in which a central plate-like portion m3, which is a portion between the pair of inner fold lines m2, extends in a direction intersecting the upper plate-like portion m4 and the lower plate-like portion m5.

[0035] In other words, when the cover body A is in the unfolded position (T), the first folding portion M has an approximately C-shaped form when viewed from the side, and protrudes outward beyond the front cover 1 and the back cover 2.

[0036] [First binding fragment C] The first binding piece C extends integrally from the left edge, which is the edge on the binding origin side, of the front cover 1. The first binding piece C extends from the part of the front cover 1 in the unfolded position (T) excluding the lower part of the left edge. In other words, the first binding piece C protrudes from a part of the left edge of the front cover 1.

[0037] The first binding piece C has a vertically long belt shape. The first binding piece C includes a first binding piece body c1 provided with a pair of upper and lower binding foot insertion holes c11 through which the first binding feet G are inserted, and a first bending portion c2 which is a bendable portion provided on one side edge of the first binding piece body c1 and connects the first binding piece body c1 and the front cover 1.

[0038] The first binding piece C is configured so that the first binding piece main body c1 can be folded back toward the inner side of the front cover 1. The first binding piece main body c1 is connected to the front cover 1 via a first bent portion c2, and the portion other than the first bent portion c2 is not constrained to the front cover 1.

[0039] The first binding piece C is bent at the first bending portion c2, and assumes a basic position in which the first binding piece main body c1 is folded back toward the inner surface of the front cover 1. The upper and lower retaining portions g2 of the first binding foot G supported by the first binding piece C in this basic position are positioned between the first binding piece main body c1 and the inner surface of the front cover 1.

[0040] The cover body A is designed to temporarily hold a document by sandwiching the document between the front cover 1 and the first binding piece C.

[0041] The first binding piece body c1 has a welded surface c12 facing the clear pocket E side to which the first extension portion t1 of the holder J is welded, and a cover-facing surface c13 facing the inside of the front cover 1.

[0042] The first bent portion c2 has folding lines c21 extending in the vertical direction and provided in pairs on the left and right. The first bent portion c2 extends in a direction intersecting with the first bent portion M.

[0043] [Second binding piece D] The second binding piece D extends integrally from the left edge, which is the edge on the binding origin side, of the back cover 2. The second binding piece D extends from the back cover 2 in the unfolded position (T) excluding the upper part of the left edge. In other words, the second binding piece D protrudes from a part of the left edge of the back cover 2.

[0044] The second binding piece D has a vertically long belt shape. The second binding piece D includes a second binding piece body d1 provided with a pair of upper and lower binding foot insertion holes d11 through which the second binding feet H are inserted, and a second bending portion d2 which is a bendable portion provided on one side edge of the second binding piece body d1 and connects the second binding piece body d1 and the back cover 2.

[0045] The second binding piece D is configured so that the second binding piece main body d1 can be folded back toward the inner side of the back cover 2. The second binding piece main body d1 is connected to the back cover 2 via the second bent portion d2, and the portion other than the second bent portion d2 is not constrained to the back cover 2.

[0046] The second binding piece D is bent at the second bending portion d2, and assumes a basic position in which the second binding piece main body d1 is folded back toward the inner surface of the back cover 2. The upper and lower retaining portions h2 of the second binding foot H supported by the second binding piece D in this basic position are positioned between the second binding piece main body d1 and the inner surface of the back cover 2.

[0047] The cover body A is designed to temporarily hold a document by sandwiching the document between the back cover 2 and the second binding piece D.

[0048] The second binding piece body d1 has a welding surface d12 facing the clear pocket E side to which the second extension portion t2 of the holder J is welded, and a cover-facing surface d13 facing the inside of the back cover 2.

[0049] The second bent portion d2 has a pair of fold lines d21 extending in the vertical direction and provided on the left and right. The second bent portion d2 extends in a direction intersecting with the first bent portion M.

[0050] [Regarding the spaced relationship between the first binding piece C and the second binding piece D] The first binding piece C is connected only to the front cover 1. On the other hand, the second binding piece D is connected only to the back cover 2. In other words, the first binding piece C and the second binding piece D are not connected to each other, that is, they are provided at a distance from each other.

[0051] A holder J is installed between the first binding strip body c1 and the second binding strip body d1 that are spaced apart from each other so as to straddle (span) the first bent portion M.

[0052] In the cover body A, a notch k1 is formed between the first binding piece main body c1 and the first bent portion c2 constituting the first binding piece C, and the second binding piece main body d1 and the second bent portion d2 constituting the second binding piece D. In other words, in the cover body A which has a generally rectangular shape as a whole in the unfolded state, the notch k1 is provided so as to separate the first binding piece C and the second binding piece D.

[0053] <First binding foot G·Second binding foot H> The clear pocket E is bound by first and second binding feet G and H, which are binding members supported by first and second binding pieces C and D.

[0054] The first and second binding feet G, H each have a band-shaped binding foot body g1, h1 extending in the vertical direction, and anti-detachment portions g2, h2 which are cover body engaging portions provided at both the upper and lower ends of the binding foot body g1, h1 and which are set wider in width than the binding foot body g1, h1.

[0055] The binding foot bodies g1 and h1 are set to have vertical and width dimensions that allow them to be inserted into the first and second binding foot insertion holes e21 and e22 provided in the clear pocket E.

[0056] The retaining portions g2 and h2 are set to have widths larger than the widths of the binding foot insertion holes c11 and d11 provided in the first and second binding pieces C and D.

[0057] A fold line sn is provided on both or one side of the retaining portions g2, h2 provided above and below. The retaining portions g2, h2 can be inserted into the binding foot insertion holes c11, d11 formed in the first and second binding pieces C, D and the first and second binding foot insertion holes e21, e22 formed in the clear pocket E by temporarily bending the fold line sn.

[0058] The anti-slip portions g2 and h2, which are temporarily bent by the fold line sn, will return to their original, approximately flat position due to the elastic deformation of the member, and will engage with the cover-facing surfaces c13 and d13 of the first and second binding pieces C and D, thereby providing the desired anti-slip function.

[0059] The upper and lower retaining portions g2 of the first binding foot G are disposed between the adjacent facing surface c13 of the first binding piece main body c1 and the inner surface of the front cover 1. The upper and lower retaining portions h2 of the second binding foot H are disposed between the adjacent facing surface d13 of the second binding piece main body d1 and the inner surface of the back cover 2.

[0060] <Clear Pocket E> The clear pocket E is supported by the first binding piece C via the first binding foot G, and is supported by the second binding piece D via the second binding foot H. The clear pocket E is bound by the first and second binding feet G and H provided on the first and second binding pieces C and D.

[0061] The clear pocket E includes a pocket body e1 that can accommodate documents through an opening e11 therein, and a retained end e2 that is provided along the left end, which is one end of the pocket body e1, and that has a first binding foot insertion hole e21 and a second binding foot insertion hole e22 through which the first and second binding feet G and H are inserted. In this embodiment, the opening e11 is provided in the pocket body e1 so as to be aligned with the retained end e2.

[0062] The clear pocket E is capable of changing its position in accordance with the change in position of the cover body A. In other words, when the cover body A is folded in half, the clear pocket E is configured to bend in the vertical center in accordance with the folding of the cover body A, and be foldable in half.

[0063] The held end e2 has a strip shape extending in the vertical direction. An upper half of the held end e2 is provided with a pair of upper and lower first binding foot insertion holes e21 through which the first binding feet G are inserted. A lower half of the held end e2 is provided with a pair of upper and lower second binding foot insertion holes e22 through which the second binding feet H are inserted.

[0064] The second binding foot insertion hole e22 is a long hole extending in the vertical direction, and is configured so that when the cover body A is folded in half, the lower half of the clear pocket E can flexibly move downward relative to the back cover 2.

[0065] That is, in this embodiment, the clear pocket E is movable relative to the back cover 2 in the vertical direction in accordance with the change in position of the cover body A between the unfolded position (T) and the folded position (F).

[0066] <Holder J> The holder J has a portion that is disposed on the cover body A or on a plurality of stacked clear pockets E. In this embodiment, the holder J is capable of covering almost the entire clear pocket E from the front side. The holder J is fixed only to the first binding piece C and the second binding piece D by welding.

[0067] The holder J is configured to be able to unfold relative to the cover body A and the clear pocket E via the first folding portion t12 and the second folding portion t22 that constitute the second folding portion U provided on the holder J only when the cover body A is in the unfolded position (T).

[0068] In other words, the holder J is configured to be rotatable around the second folding portion U provided between the extension portion 12, which is the base end, and the holder main body JH, so that it can take on a covering position (B) in which the holder main body JH, which is the main body portion, covers the top of the clear pocket E, an expanded position (S) in which the holder main body JH does not cover the top of the clear pocket E, and an outer position (P) in which the holder main body JH is located on the outer surface side of the cover body A.

[0069] In a file in the unfolded position (T), when the holder body JH is in the covering position (B), the holder body JH is positioned at the top (front) of the file. In other words, the holder body JH is positioned at the top (front) of the file in the covering position (B), and when the file is in the unfolded position (T), it can function as a cover, covering the multiple clear pockets E from above (front).

[0070] Moreover, the holder J is configured so that it can easily hold documents by itself. The holder J has a storage space sp in which documents can be stored between the base sheet 3 and the cover sheet 4. In other words, the cover sheet 4 of the holder J can cooperate with the base sheet 3 to form a pocket in which documents can be stored.

[0071] The holder J is provided with a base sheet 3 in the form of a continuous sheet, which is welded to the first binding piece C and the second binding piece D of the cover body A, respectively, and a cover sheet 4 which covers the front side of the base sheet 3.

[0072] [Base sheet 3] The base sheet 3 comprises a base sheet main body 31 having a vertically elongated rectangular shape in the unfolded position (T), a first extension portion t1 extending from the upper part of the left end portion of the base sheet main body 31, which is the binding origin side, and a second extension portion t2 extending from the lower part of the left end portion of the base sheet main body 31, which is the binding origin side.

[0073] The base sheet 3 has a central bent portion N extending in the left-right direction in the vertical center when in the unfolded posture (T). The central bent portion N includes a central fold line n1 extending linearly in the left-right direction, and upper and lower fold lines n2 extending linearly in the left-right direction above and below the central fold line n1.

[0074] The central bent portion N is provided in the vertical middle of the base sheet main body 31. In the unfolded posture (T), the base sheet 3 has an upper half portion 3a above the central bent portion N and a lower half portion 3b below the central bent portion N.

[0075] The base sheet main body 31 cooperates with the cover sheet 4 to form the holder main body JH having a storage space sp for storing documents. The base sheet main body 31 has a central bent portion N between an upper half portion 311 and a lower half portion 312.

[0076] A holding piece 313 is disposed at the upper left corner of the base sheet main body 31, and is capable of holding the upper left corner, which is the free end of the cover sheet 4. The holding piece 313 is a piece-like piece that extends integrally from the upper edge of the base sheet main body 31, is folded back toward the front side of the base sheet main body 31, and has its left end welded to the base sheet main body 31. The cover sheet 4 is connected to the right end and bottom end of the base sheet main body 31 either integrally or by welding.

[0077] A third folding portion V is provided on the left side of the base sheet main body 31, extending in the vertical direction in the unfolded posture (T). The third folding portion V is arranged approximately parallel to the second folding portion U. The third folding portion V is provided across the entire vertical area of ​​the base sheet main body 31. The third folding portion V is arranged midway between the second folding portion U and the left edge of the cover sheet 4. The third folding portion V has left and right fold lines v1 that are parallel to each other and extend in the vertical direction in straight lines.

[0078] The body edge 314 formed between the second folded portion U and the third folded portion V can function as a gusset when the holder body JH is in the outer position. In other words, the body edge 314 can form a certain gap between the cover sheet 4 and the cover body A when the holder J is in the outer position (P).

[0079] In this embodiment, when the cover body A transitions from the folded position (F) to the unfolded position (F), one outer fold line m1 at the base end of the front cover A and the other outer fold line m1 at the base end of the back cover are restricted by the base sheet body 31 of the base sheet 3, which is in the form of a continuous sheet, so that they do not move apart from each other.

[0080] [First extension portion t1] The first extension portion t1 extends integrally from the left edge, which is the edge on the binding origin side, of the base sheet main body 31. The first extension portion t1 extends from a portion excluding the lower part of the left edge of the upper half portion 311 of the base sheet main body 31 in the unfolded posture (T). In other words, the first extension portion t1 protrudes from a part of the left edge of the upper half portion 311 of the base sheet main body 31.

[0081] The first extension portion t1 is fixed to the first binding piece C of the cover body A by welding.

[0082] The first extension portion t1 has a vertically long band shape. The first extension portion t1 includes a first extension portion main body t11 having a portion to be welded to the first binding piece C of the cover body A and provided with a pair of upper and lower binding foot passing holes ta through which the first binding foot G can pass, and a first bent portion t12 provided on one side edge and constituting a second bent portion U which is a bendable portion connecting between the first extension portion main body t11 and the upper half portion 311 of the base sheet main body 31.

[0083] The first extension portion t1 is configured so that the first extension portion main body t11 can be folded back toward the inner surface of the base sheet main body 31. The first extension portion main body t11 is connected to the base sheet main body 31 via a second folding portion U, and the portion other than the second folding portion U is not constrained to the base sheet main body 31.

[0084] When the holder J is in the covering position (B), the first extension portion t1 is bent by the second folding portion U, and the first extension portion main body t11 is folded back toward the inner side of the base sheet main body 31.

[0085] When the holder J is in the deployed position (S), the first extension portion t1 is bent by the second folding portion U, and the first extension portion main body t11 is positioned outside the base sheet main body 31.

[0086] The first bent portion t12 has a pair of fold lines t12s extending in the vertical direction and provided on the left and right. The first bent portion t12 extends in a direction intersecting with the first bent portion M.

[0087] [Second sidewall section t2] The second extension portion t2 extends integrally from the left edge, which is the edge on the binding origin side, of the base sheet main body 31. The second extension portion t2 extends from a portion excluding an upper part of the left edge of the lower half portion 312 of the base sheet main body 31 in the unfolded posture (T). In other words, the second extension portion t2 protrudes from a part of the left edge of the lower half portion 312 of the base sheet main body 31.

[0088] The second extension portion t2 is fixed to the second binding piece D of the cover body A by welding.

[0089] The second extension portion t2 has a vertically long band shape. The second extension portion t2 includes a second extension portion main body t21 having a portion to be welded to the second binding piece D of the cover body A and provided with a pair of upper and lower binding foot passing holes ta through which the second binding foot H can pass, and a second bent portion t22 provided on one side edge and constituting a second bent portion U which is a bendable portion connecting the second extension portion main body t21 and the lower half portion 312 of the base sheet main body 31.

[0090] The second extension portion t2 is configured so that the second extension portion main body t21 can be folded back toward the inner surface of the base sheet main body 31. The second extension portion main body t21 is connected to the base sheet main body 31 via a second folding portion U, and the portion other than the second folding portion U is not constrained to the base sheet main body 31.

[0091] When the holder J is in the covering position (B), the second extension portion t2 is bent by the second folding portion U, and the second extension portion main body t21 is folded back toward the inner side of the base sheet main body 31.

[0092] When the holder J is in the deployed position (S), the second extension portion t2 is bent by the second folding portion U, and the second extension portion main body t11 is positioned outside the base sheet main body 31.

[0093] The second bent portion t22 has a pair of fold lines t22s extending in the vertical direction and provided on the left and right. The second bent portion t22 extends in a direction intersecting with the first bent portion M.

[0094] The first and second extension portions t1 and t2 described in detail above constitute a holder body support portion that supports the holder body JH, which is mainly composed of the base sheet body 31 and the cover sheet 4.

[0095] A notch k2 is formed between the first extension portion t1 and the second extension portion t2. That is, the base sheet 3, which has a generally rectangular shape as a whole in an unfolded state, is provided with the notch k2 so as to separate the first extension portion t1 and the second extension portion t2.

[0096] [Cover Sheet 4] The cover sheet 4 is superimposed on the front of the base sheet 3 and has a second bent portion R extending in the left-right direction at the middle portion in the up-down direction corresponding to the first bent portion N.

[0097] The cover sheet 4 is set to have a width dimension shorter than that of the base sheet main body 31. The cover sheet 4 is capable of covering the front side of the base sheet main body 31 except for the left side. The right end and bottom end of the cover sheet 4 are connected to the base sheet main body 31 either integrally or by welding.

[0098] The cover sheet 4 has an upper half 41 having a horizontally elongated rectangular shape, a lower half 42 having a horizontally elongated rectangular shape, a second bent portion R arranged between the upper half 41 and the lower half 42, and a cutout 43 for avoiding continuity between the right edge of the second bent portion R and the base sheet main body 31.

[0099] The second bent portion R is provided in the vertical center of the cover sheet 4 in the unfolded posture (T). The second bent portion R includes a central fold line r1 that extends linearly in the left-right direction, and upper and lower fold lines r2 that are arranged above and below the central fold line r1 and also extend linearly in the left-right direction.

[0100] In the folded position (F), the second bent portion R is configured to be bent in a direction away from the first bent portion N. More specifically, in the folded position (F), the second bent portion R is configured to form a mountain fold in which the central fold line r1 is located more inward than the left and right fold lines r2.

[0101] The holder body JH in the holder J having the above configuration can be bent by the first bent portion t12 and the second bent portion t22, which are the second bent portion U, only when the holder J is in the unfolded position, and can be unfolded from the covered position (B) to the unfolded position (S). Furthermore, the holder body JH can be bent by the second bent portion U and the third bent portion V, and can be positioned at the outer position (P).

[0102] Furthermore, the holder J is configured so that the base sheet 3 and the cover sheet 4 can take a folded position (F) and an unfolded position (T) with the first and second bends N and R as rotation centers. In other words, the holder J is capable of changing its position in response to changes in the position of the cover body A. In other words, when the cover body A is folded in half, the holder J is configured so that it can be bent and folded in half at the first and second bends N and R located in the vertical center in accordance with the cover body A.

[0103] Next, with reference to FIGS. 12 and 13, the operation of the first folding portion M when the file transitions from the folded position (F) to the unfolded position (T) will be described.

[0104] As shown in Figure 12, when the file is in the folded position (F), the inner surfaces of the front cover 1 and the back cover 2 face each other via the folded clear pocket E and the holder J. At this time, the first folded portion M has a central plate-like portion m3 located between a pair of inner fold lines m2 that intersects with the front cover 1 and the back cover 2, and an upper plate-like portion m4 and a lower plate-like portion m5 located between the outer fold line m1 and the inner fold line m2 that extend so as to be flush with the front cover 1 and the back cover 2.

[0105] Next, when the file is transitioned from the folded position (F) in Figure 12 to the unfolded position (T) in Figure 13, the front cover 1 and back cover 2 change to a position where they coincide on the same virtual plane. Similarly, the clear pocket E and holder J also transition from a folded state to an unfolded state on the inside of the front cover 1 and back cover 2, overlapping each other.

[0106] In the unfolded position (T), the first folded portion M has a U-shaped configuration that protrudes relative to the front cover 1 and the back cover 2.

[0107] That is, the central plate-shaped portion m3 in the first folded portion M is oriented substantially parallel to the front cover 1 and the back cover 2. On the other hand, the upper plate-shaped portion m4 and the lower plate-shaped portion m5 in the first folded portion M are oriented substantially perpendicular to the front cover 1, the back cover 2, and the central plate-shaped portion m2.

[0108] The first extension portion t1 connected to the base sheet main body 31 is welded to the first binding piece C connected to the front cover 1, and the second extension portion t2 connected to the base sheet main body 31 is welded to the second binding piece D connected to the back cover 2. For this reason, the base sheet main body 31 limits the distance between the front cover 1 and the back cover 2 in the unfolded position (T) so that they do not separate.

[0109] As a result, the file is able to effectively release the concentration of stress that may occur in the area between the front cover 1 and the back cover 2 in the unfolded position (T) by the outward protruding deformation caused by the first folding portion M, i.e., by changing the position so that the upper plate-like portion m4 and the lower plate-like portion m5 stand up relative to the front cover 1 and the back cover 2.

[0110] As described above in detail, the file of this embodiment comprises a cover body A having a front cover 1 and a back cover 2 connected via a first folding portion M, and configured to be capable of adopting an unfolded position (T) in which the front cover 1 and the back cover 2 are unfolded so that they are substantially flush with each other, and a folded position (F) which is a closed position in which the inner surfaces of the front cover 1 and the back cover 2 face each other, and the holder J which is a sheet body fixed to the cover body A and configured to be unfoldable relative to the cover body A via the second folding portion U only when the cover body is in the unfolded position (T). The first folding portion M can be configured to protrude outward in the unfolded position (T).

[0111] For this reason, in the file of this embodiment, the first folding portion M is configured to be able to take on a shape that protrudes outward in the unfolded position (T), so that when used in the unfolded position (T), the first folding portion M that protrudes outward can function as a fingerhold for the user, making it easier for the user to hold.

[0112] Furthermore, a holder J is provided which can be unfolded relative to the cover body A via the second folding portion U only when the unfolded position (T) is assumed, so that a file can be provided which can hold paper sheets and other paper materials suitably by sandwiching them between the cover body A and the holder J.

[0113] The cover body A is provided with a first binding piece C, which is a first support piece connected to the front cover 1 via a first bent portion c2, and a second binding piece D, which is a second support piece connected to the back cover 2 via a second bent portion d2. A holder J is fixed to the first and second binding pieces C and D.

[0114] Therefore, the holder J is supported by the cover body A in a suitable manner.

[0115] A notch k1 is formed between the first bent portion c2 and the second bent portion d2, which allows the first folding portion M, located between the front cover 1 and the back cover 2, to operate smoothly without being hindered by the first and second binding pieces C and D.

[0116] The second bent portion U extends in a direction intersecting with the first bent portion M.

[0117] Therefore, when the cover body A is in the unfolded position (T), the holder J can be suitably unfolded at the second folding portion U. In other words, the file has a cover body A which has a first folding portion M and can take the unfolded position (T) and the folded position (F), and a holder J which has a second folding portion U and can take the unfolded position (S) and the covered position (B), and by cooperating the cover body A and the holder J, the file can be folded into four. Therefore, the file can suitably hold paper sheets and other such materials by sandwiching them between the cover body A and the holder J.

[0118] The first folding portion M comprises a pair of outer fold lines m1 formed at the boundary between the front cover 1 and the back cover 2, and a pair of inner fold lines m2 formed parallel to and inside the pair of outer fold lines m1. In the unfolded position (T), an upper plate-like portion m4 and a lower plate-like portion m5, which are portions between the outer fold lines m1 and the inner fold lines m2, can take an upright position relative to the front cover 1 and the back cover 2.

[0119] Therefore, the file is able to effectively release the concentration of stress that may occur in the area between the front cover 1 and the back cover 2 in the unfolded position (T) by the protruding deformation of the first folding portion M, i.e., by changing the position so that the upper plate-like portion m4 and the lower plate-like portion m5 stand up relative to the front cover 1 and the back cover 2.

[0120] That is, in the file of this embodiment, by providing the first folding portion M, the position change between the folded position (F) and the unfolded position (T) can be carried out extremely smoothly.

[0121] A holder J, which is a sheet body, is welded to each of the first binding piece C and the second binding piece D. The base end edge of the front cover 1 and the base end edge of the back cover 2 are configured not to separate from each other when transitioning from the folded position (F) to the unfolded position (T).

[0122] Therefore, the holder J is firmly adhered to the cover body A.

[0123] Moreover, the first and second binding pieces C and D in the cover body A and the base sheet 3 of the holder J are fixed by welding, and the base sheet 3 is arranged so as to straddle the first binding piece C connected to the front cover 1 and the second binding piece D connected to the back cover 2.

[0124] Therefore, the file can be suitably configured so that the base end of the front cover 1 and the base end of the back cover 2 do not move apart when transitioning from the folded position (F) to the unfolded position (T). In other words, with a file configured in this way, the first folded portion M can suitably take a form that protrudes outward in the unfolded position (T).

[0125] A clear pocket E, which is the object to be bound, is supported by a first binding piece C and a second binding piece D via first and second binding feet G and H, which are binding members.

[0126] Therefore, paper sheets and the like can be stored in the clear pocket E and held in a suitable manner.

[0127] The present invention is not limited to the above-described embodiment.

[0128] The file may be any file that includes at least a cover body and a sheet body fixed to the cover body, i.e., the file may not be provided with a bound body.

[0129] The bound object may be any object provided on the inner surface of the cover body, and is not limited to the clear pocket shown in the above embodiment. Other bound objects include, for example, paper. The bound object is not limited to objects supported on the cover body via a binding member, but may also be fixed by welding or the like.

[0130] The bound body may be configured to be movable relatively to the front cover, not the back cover, or may be configured to be movable relatively to both the front cover and the back cover.

[0131] The sheet body is fixed to the cover body and is configured to be able to unfold relative to the cover body via the second folding portion only when it is in an unfolded position, and is not limited to the holder shown in the above-mentioned embodiment.

[0132] The sheet body may be anything as long as it has at least a sheet-shaped portion, and may not have a storage space for storing paper or the like, like a holder.

[0133] The sheet body is not limited to being fixed to the binding origin side of the cover body, but may be fixed to the anti-binding origin side.

[0134] The shape of the first bent portion may be any suitable shape within the scope of the present invention, that is, the first bent portion may have a shape that protrudes outward in the unfolded position.

[0135] The bound body may be configured to be movable relatively to the front cover, not the back cover, or may be configured to be movable relatively to both the front cover and the back cover.

[0136] In the above-described embodiment, the holder, which is a sheet body, is disposed so as to cross between the front and back covers via the first and second binding pieces, but this is not limited to this. For example, the sheet body may be disposed so as to cross between the front and back covers by being fixed directly to the front and back covers without using the first and second support pieces.

[0137] The sheet body may have the following structure, for example.

[0138] FIG. 15 shows an example of another embodiment of the holder J, which is a cover / sheet body fixed to a file.

[0139] The holder J shown in Figure 15 has the lower half 312 of the base sheet main body 31 fixed to the left edge of the lower half 42 of the cover sheet 4 by welding and integrally connected to the lower edge of the lower half 42 of the cover sheet 4.

[0140] The right edge of the base sheet main body 31 and the right edge of the cover sheet 4 are not connected to each other, and can be separated from each other when inserting or removing documents, etc.

[0141] The upper half 311 of the base sheet main body 31 and the upper half 41 of the cover sheet 4 are configured to be relatively movable in the up-down direction.

[0142] More specifically, a guide mechanism GY is provided between the upper half 311 of the base sheet main body 31 and the upper half 41 of the cover sheet 4. The guide mechanism GY is capable of guiding the upper half 311 of the base sheet main body 31 and the upper half 41 of the cover sheet 4 so that they can move relatively in the up-and-down direction in conjunction with the opening and closing movement of the cover body A between the folded position (F) and the unfolded position (T).

[0143] The guide mechanism GY includes a rail portion gy1 extending in the vertical direction and provided on one side of either the upper half 311 of the base sheet main body 31 or the upper half 41 of the cover sheet 4 (in the example of FIG. 15, the left side of the upper half 41 of the cover sheet 4), and a rail holding portion gy2 provided on the other side (in the example of FIG. 15, the left side of the upper half 311 of the base sheet main body 31) that holds the rail portion gy1 so that it can move relatively in the vertical direction. With this structure, when the holder J is folded in half, the upper half 41 of the cover sheet 4 can move relatively to the upper half 311 of the base sheet main body 31, and therefore the cover sheet 4 can be folded smoothly.

[0144] Furthermore, the specific configuration of each part is not limited to the above embodiment, and various modifications are possible within the scope of the present invention. [Explanation of symbols]

[0145] A...Cover body 1...Front cover 2...Back cover J...Holder (sheet body) M...First bending part U: Second bend (T)…Deployed posture (F)...Folded position (closed position)

Claims

1. A file comprising: a cover body having a front cover and a back cover connected via a first folding portion, the cover body being configured to be capable of adopting an unfolded position in which the front cover and the back cover are unfolded so that they are substantially flush with each other, and a closed position in which the inner surfaces of the front cover and the back cover face each other; and a sheet body fixed to the cover body and configured to be unfoldable relative to the cover body via a second folding portion only when the file is in the unfolded position, the first bent portion may take a form that protrudes outward in the deployed position, The cover body has a first support piece connected to the front cover via a first bent portion, and a second support piece connected to the back cover via a second bent portion, and the sheet body is fixed to these first and second support pieces.

2. A file comprising: a cover body having a front cover and a back cover connected via a first folding portion, the cover body being configured to be capable of adopting an unfolded position in which the front cover and the back cover are unfolded so that they are substantially flush with each other, and a closed position in which the inner surfaces of the front cover and the back cover face each other; and a sheet body fixed to the cover body and configured to be unfoldable relative to the cover body via a second folding portion only when the file is in the unfolded position, the first bent portion may take a form that protrudes outward in the deployed position, The second folded portion extends in a direction intersecting the first folded portion.

3. A file comprising: a cover body having a front cover and a back cover connected via a first folding portion, the cover body being configured to be capable of adopting an unfolded position in which the front cover and the back cover are unfolded so that they are substantially flush with each other, and a closed position in which the inner surfaces of the front cover and the back cover face each other; and a sheet body fixed to the cover body and configured to be unfoldable relative to the cover body via a second folding portion only when the file is in the unfolded position, the first bent portion may take a form that protrudes outward in the deployed position, the first folding portion comprises a pair of outer fold lines formed at the boundary between the front cover and the back cover, and a pair of inner fold lines formed parallel to the pair of outer fold lines and on the inside of the pair of outer fold lines, In the unfolded position, the portion between the outer fold line and the inner fold line can take an upright position relative to the front and back covers.

4. A file comprising: a cover body having a front cover and a back cover connected via a first folding portion, the cover body being configured to be capable of adopting an unfolded position in which the front cover and the back cover are unfolded so that they are substantially flush with each other, and a closed position in which the inner surfaces of the front cover and the back cover face each other; and a sheet body fixed to the front cover and the back cover and configured to be unfoldable relative to the front cover and the back cover via a second folding portion only when the file is in the unfolded position, A file in which the first folded portion can take a form that protrudes outward in the unfolded position.

5. 2. The file according to claim 1, wherein a notch is formed between the first bent portion and the second bent portion.

6. the sheet body is welded to the first support piece and the second support piece, 6. The file according to claim 1, wherein the base end edges of the front cover and the back cover do not move apart from each other when the file transitions from the closed position to the unfolded position.

7. 7. The file according to claim 1, 5 or 6, wherein the object to be bound is supported by the first support piece and the second support piece via a binding member.

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