Storage file

The storage file with a flexible connecting part between covers addresses the complexity and creasing issues of existing designs, enabling easy document handling and storage without creases.

JP3256690UActive Publication Date: 2026-07-17CAINZ CORP

Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Utility models
Current Assignee / Owner
CAINZ CORP
Filing Date
2026-05-22
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing storage files with a complex structure and binding tools complicate the handling of larger documents, leading to creases and difficulty in unfolding and maintaining documents straight.

Method used

A storage file with a simple structure featuring a flexible connecting part between the front and back covers that allows switching between open and storage positions, using a flexible sheet member to unfold into a sheet shape when open and curve into a loop when stored, facilitating easy document handling.

Benefits of technology

The flexible connecting part enables easy unfolding of documents on a flat plane and smooth storage without creases, maintaining documents upright and facilitating easy insertion and removal.

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Abstract

This storage file features a simple design with the front and back covers connected by a joint, allowing for easy switching between an open-page orientation and a storage orientation. It can neatly store documents bound with a binder, and when opened, it makes it easy to spread the bound documents straight out. [Solution] A storage file 100 having a rectangular front cover 10 and a back cover 20 connected via a connecting part 30, which can be switched between an open position where the front cover and back cover are laid out on substantially the same plane and a storage position where the inner surfaces of the front cover and back cover face each other, wherein the back cover has a connecting part on one end and a binding device 21 for binding documents on the other end, and the connecting part is a flexible sheet material which unfolds into a sheet shape in the open position and curves into a loop shape in the storage position.
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Description

Technical Field

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[0001] This invention relates to a storage file.

Background Art

[0002] As a file for binding and storing documents, a file having a front cover and a back cover and binding the documents with a binding tool provided on the back cover side is widely used. However, when storing documents larger than the standard size, for example, A3-sized documents in a file equivalent to A4 size, it is necessary to fold the documents, and there is a problem that creases are formed on the documents. Also, when opening the file, there is a problem that it takes time to unfold the folded documents.

[0003] In response to such problems, Patent Document 1 discloses a half file in which a single sheet of cardboard is subjected to folding at multiple locations to form a joining portion, a belly portion, a back cover portion, a front cover portion, and a front cover portion, and a bookcase-shaped square tube is formed when closed.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] The half file described in Patent Document 1 has a binding tool provided inside the back cover and a holding band provided inside the front cover, and aims to accommodate a document surface having a size approximately twice the standard size by curving it without creasing. However, since a single sheet of cardboard is subjected to folding at multiple locations to form multiple cover portions and a bookcase-shaped square tube is formed when closed, there is a problem that the structure becomes relatively complicated. Furthermore, because the backing paper has creases, when opened, the front cover may rise relative to the back cover, which can make it difficult to hold documents straight.

[0006] This invention was made in view of the aforementioned problems, and its purpose is to provide a storage file that, with a simple structure in which the front and back covers are connected by a connecting part, allows switching between an open position and a storage position, can store documents bound with a binding mechanism well, and makes it easy to spread the bound documents straight when in the open position. [Means for solving the problem]

[0007] The above objective of this invention is achieved by the following configuration. (1) A storage file having a rectangular front cover and back cover connected via a connecting part, which can be switched between a spread position in which the front cover and back cover are laid out on substantially the same plane and a storage position in which the inner surfaces of the front cover and back cover face each other, The back cover has the connecting portion on one end and a binding mechanism for binding documents on the other end. The connecting portion is a flexible sheet member that unfolds into a sheet shape in the open position, while curving into a loop shape in the retracted position. Storage file. [Effects of the Invention]

[0008] According to this invention, since the front and back covers are connected via a flexible connecting portion, the front and back covers can be easily unfolded on substantially the same plane when opened, and when stored, the connecting portion can be curved into a loop shape, making it easy to store documents bound with a binder. Furthermore, when opened, the connecting portion easily and smoothly becomes sheet-like, allowing documents bound with a binder to be opened straight. [Brief explanation of the drawing]

[0009] [Figure 1] Figure 1 is a perspective view showing the open position of a storage file to which the present invention is applied. [Figure 2] Figure 2 is a front view of the storage file, showing it with only the front cover closed. [Figure 3] Figure 3 is a front view showing the orientation in which the files are stored. [Figure 4] Figure 4 is a plan view showing the storage file in its storage position. [Figure 5] Figure 5 is a perspective view showing the open orientation of a storage file with documents bound together. [Modes for carrying out the invention]

[0010] Hereinafter, an embodiment of a storage file to which the present invention is applied will be described in detail with reference to the drawings. Figure 1 is a perspective view showing the storage file to which the present invention is applied in an open position. Figure 2 is a front view of the storage file with only the front cover closed. Figure 3 is a front view showing the storage file in a stored position. Figure 4 is a top view showing the storage file in a stored position. Figure 5 is a perspective view showing the storage file in an open position with documents bound inside.

[0011] The storage file 100 has a rectangular front cover 10, a rectangular back cover 20, a first connecting portion 30 connecting the front cover 10 and the back cover 20, and a lid member 50 connected to the back cover 20 via a second connecting portion 40 and detachably locked to the front cover 10. This configuration can be seen in Figures 1 and 2, etc.

[0012] The front cover 10 and back cover 20 are formed from, for example, cardboard, synthetic resin board, or a plate-like member made by laminating these materials. The size of the front cover 10 and back cover 20 can be appropriately set according to the standard dimensions of the document P to be stored, and can be set to external dimensions equivalent to A4 size, for example.

[0013] The back cover 20 is provided with the front cover 10 on one end side via the first connecting portion 30, while the cover member 50 is provided on the other end side via the second connecting portion 40. On the other end side of the back cover 20, there is provided a binding tool 21 for binding the document P.

[0014] The binding tool 21 can adopt various known binding tools, such as a two-hole metal binding tool, a resin ring mechanism, a lever arch binding tool, a pipe binding tool, etc. The binding tool 21 is fixed near the other end side of the back cover 20 and binds the document P with punch holes formed.

[0015] The front cover 10 is provided with the back cover 20 on one end side via the first connecting portion 30. On the other end side of the front cover 10, there is provided an arc-shaped slit 11 to which the cover member 50 is detachably locked. On one longitudinal end side of the front cover 10, there is provided a holding piece 15 for pressing the document P bound by the binding tool 21.

[0016] The holding piece 15 is formed in a pentagonal shape in plan view by a sheet-like member, and has an attachment portion 16 attached along the upper edge portion or the lower edge portion of the front cover 10, a rectangular holding portion 17 extending from both ends of the attachment portion 16 to the inner surface side of the front cover 10, and a triangular grip portion 18 further extending from this holding portion 17. More specifically, the holding piece 15 forms a rectangular holding portion 17 by a pair of side edges extending substantially parallel from both ends of the attachment portion 16, and forms a triangular grip portion 18 such that the pair of side edges incline to approach each other on the tip side of this holding portion 17. The apex of this triangular grip portion 18 has a shape eccentric toward one of the pair of side edges. Thereby, the holding piece 15 as a whole becomes pentagonal in plan view.

[0017] According to this holding piece 15, since a part of the document P, for example, the tip edge side or the corner side can be held between the front cover 10, it becomes easier to suppress the document P from fluttering in the storage file or being displaced in the storage posture.

[0018] Also, according to the holding piece 15, the picking part 18 functions as a part that is easy for the user to grip with a fingertip. By picking the picking part 18 and slightly lifting the holding piece 15, the user can easily insert the end of the document P between the holding piece 15 and the front cover 10. Also, when taking out the document P from the holding piece 15, by using the picking part 18, it becomes easier to turn over the holding piece 15, so that the operation of taking in and out the document P can be smoothly performed.

[0019] In addition, in this embodiment, the holding piece 15 is provided at the end on the inner surface side of the front cover 10, but it may be arranged in such a way that it can press the document P stapled by the stapler 21, and is not limited to this. The holding piece 15 may be provided only on the inner surface side of either the front cover 10 or the back cover 20, or may be provided on both inner surface sides. Also, the holding piece 15 may be provided only on the upper edge side, only on the lower edge side, or on both the upper edge side and the lower edge side. According to the size, thickness, or usage mode of the document P to be held, the size, arrangement position, and number of the holding pieces 15 can be appropriately changed.

[0020] The lid member 50 is connected to the other end side of the back cover 20 via the second connecting part 40, and a flap 51 is formed. The lid member 50 is arranged so as to wrap around from the back cover 20 side to the front cover 10 side in the storage posture, and is configured to be movable to a position overlapping the outer surface side of the front cover 10.

[0021] The flap 51 is a tongue-shaped part formed by making an arc-shaped cut in a part of the lid member 50, and is locked to the slit 11 formed in the front cover 10. The flap 51 can lock the lid member 50 to the front cover 10 by being inserted into or engaged with the slit 11 in a state where the lid member 50 covers the front cover 10 side in the storage posture. This makes it easier to maintain the closed state of the storage file 100, and can prevent the front cover 10 and the back cover 20 from accidentally opening during carrying or storage. [[ID=*]]

[0022] The first connecting portion 30 and the second connecting portion 40 are formed from a flexible sheet member. Both the first connecting portion 30 and the second connecting portion 40 have properties that make them easily return to a sheet-like shape. Even if the storage file 100 is bent when switched to the storage position, it will smoothly return to a sheet-like shape when switched to the open position. As the sheet members constituting the first connecting portion 30 and the second connecting portion 40, for example, resin sheets, nonwoven fabrics, cloths, synthetic leathers, or laminates thereof can be used.

[0023] The first connecting portion 30 functions as a hinge member between the front cover 10 and the back cover 20 by connecting one end of the front cover 10 in the short direction with one end of the back cover 20 in the short direction. The first connecting portion 30 can be fixed to the front cover 10 and the back cover 20 by adhesive, welding, sewing, riveting, or a combination thereof.

[0024] The first connecting section 30 unfolds into a sheet shape when the storage file 100 is in an open position, holding the front cover 10 and back cover 20 side by side on approximately the same plane. On the other hand, when the storage file 100 is in a stored position, the first connecting section 30 curves into a loop shape, causing the front cover 10 and back cover 20 to move relative to each other so that their inner surfaces face each other. Thus, in this embodiment, a first connecting portion 30 made of a separate, flexible sheet material is provided between the front cover 10 and the back cover 20, rather than a folded spine. This makes it easier to unfold the front cover 10 and the back cover 20 into a nearly flat state when the book is opened.

[0025] The second connecting portion 40 functions as a hinge member between the back cover 20 and the lid member 50 by connecting the other end of the back cover 20 in the short direction with the one end of the lid member 50 in the short direction. The second connecting portion 40 can be fixed to the back cover 20 and the lid member 50 by adhesive, welding, sewing, riveting, or a combination thereof.

[0026] The second connecting section 40 unfolds into a sheet shape when the storage file 100 is in an open position, holding the back cover 20 and the lid member 50 side by side on approximately the same plane. On the other hand, when the storage file 100 is in a storage position, the second connecting section 40 curves into a loop shape, and the lid member 50 moves relative to it so as to overlap the front cover 10 and back cover 20 in the storage position. Thus, in this embodiment, a second connecting portion 40 made of a separate flexible sheet member is provided between the back cover 20 and the lid member 50, rather than a folded spine. This makes it easier to unfold the back cover 20 and the lid member 50 into a nearly flat state when the book is opened.

[0027] (Mechanism of Action and Effects) Next, the function and effects of the storage file 100 described above will be explained based on Figure 5. According to the storage file 100 described above, the front cover 10 and back cover 20 are connected by a flexible, sheet-like first connecting part 30, allowing the user to switch between an open position and a storage position.

[0028] In the open storage file 100, the front cover 10 and back cover 20 are aligned on approximately the same plane, making it easy to view the documents P bound in the binding mechanism 21 in an open state. In particular, even when the documents P spread out so that they overlap the front cover 10, the front cover 10 is less likely to lift up, making it easier to hold the documents P upright. According to this, writing on documents P while they are bound in storage file 100 becomes smooth and easy.

[0029] In the storage position of the storage file 100, the inner surfaces of the front cover 10 and the back cover 20 face each other, and the first connecting portion 30 is curved in a loop shape. As a result, the documents P bound in the binding mechanism 21 are stored in a state that is gently curved toward the first connecting portion 30. Therefore, even when, for example, an A3-sized document P is bound in a storage file equivalent to A4 size, the document P can be stored without creating a clear crease.

[0030] Furthermore, the material, dimensions, and fixing structure of each component of the storage file 100 can be changed as appropriate. For example, the front cover 10 and back cover 20 may be made of paper, and the first connecting part 30 and second connecting part 40 may be made of resin sheet, or the front cover 10 and back cover 20 may be made of resin board, and the first connecting part 30 and second connecting part 40 may be made of cloth. In addition, the width dimension of the first connecting part 30 can be set according to the number and thickness of the documents P to be stored, and if the thickness of the documents P is large, the width of the first connecting part 30 can be increased to make it easier to store the documents P in a curved position without forcing them.

[0031] Furthermore, with a configuration that includes a lid member 50 and a flap 51, the flap 51 can be locked into the slit 11 on the front cover 10 side, making it easier to maintain the closed state in the storage position. Furthermore, the configuration with a retaining piece 15 on the inner side of the front cover 10 makes it easier to hold the documents P bound by the binding device 21 on the inner side of the front cover 10. Furthermore, by providing a gripping portion 18 on the retaining piece 15, it becomes easier to insert and remove documents P.

[0032] Furthermore, this invention is not limited to the embodiments described above, and can be modified, improved, and modified as appropriate.

[0033] As described above, the following matters are disclosed in this specification: (1) A storage file having a rectangular front cover and back cover connected via a connecting part, which can be switched between a spread position in which the front cover and back cover are laid out on substantially the same plane and a storage position in which the inner surfaces of the front cover and back cover face each other, The back cover has the connecting portion on one end and a binding mechanism for binding documents on the other end. The connecting portion is a flexible sheet member that unfolds into a sheet shape in the open position, while curving into a loop shape in the retracted position. Storage file. With this configuration, since the front and back covers are connected via a flexible connecting section, the front and back covers can be easily unfolded on approximately the same plane when opened, and when stored, the connecting section can be curved into a loop, resulting in a storage file that easily accommodates documents bound with a binder. Furthermore, when opened, the connecting section easily and smoothly becomes sheet-like, allowing documents bound with a binder to be opened straight.

[0034] (2) On the other end of the back cover, a plate-shaped lid member is provided via a second connecting portion, which can be locked to the front cover in the storage position. (1) The storage file described above. This configuration makes it easier to maintain the closed state of the storage file 100 once it has been switched to the storage position.

[0035] (3) The lid member is provided with an integrally formed flap, The front cover has a slit formed therein, into which the flap is secured. (2) The storage file described above. This configuration makes it easier to maintain the closed state of the storage file 100 once it has been switched to the storage position.

[0036] (4) A retaining piece for holding documents bound by the binding device is provided on the inner side of the front cover or the back cover. A storage file as described in one of (1) to (3). This configuration provides greater stability to documents bound in the binder.

[0037] (5) The retaining piece is in the form of a sheet and is formed in a pentagonal shape in plan view, and has an attachment portion that is attached along the upper or lower edge of the front cover or the back cover. (4) The storage file described above. With this configuration, documents bound in a binder can be smoothly inserted into the retaining piece.

[0038] (6) The retaining piece has a rectangular retaining portion in plan view that extends from the mounting portion to the inner surface of the front cover or the back cover, and a triangular gripping portion in plan view. (5) The storage file described. This configuration makes it easier to grasp the retaining piece, thus facilitating the process of inserting and removing documents bound in a binder. [Explanation of Symbols]

[0039] 10 Front Cover 11 slits 15 Holding piece 16 Mounting part 17 Holding part 18. Thumb part 20 Back cover 21 Binding mechanism 30 1st connection part 40 2nd connection part 50 Lid member 51 Flap 100 Storage Files P Documents

Claims

1. A storage file having a rectangular front cover and back cover connected via a connecting part, which can be switched between a spread position in which the front cover and back cover are laid out on substantially the same plane and a storage position in which the inner surfaces of the front cover and back cover face each other, The back cover has the connecting portion on one end and a binding mechanism for binding documents on the other end. The connecting portion is a flexible sheet member that unfolds into a sheet shape in the open position, while curving into a loop shape in the retracted position. Storage file.

2. On the other end of the back cover, a plate-shaped lid member is provided via a second connecting portion, which can be locked to the front cover in the storage position. The storage file according to claim 1.

3. The lid member is provided with an integrally formed flap. The front cover has a slit formed therein, into which the flap is secured. The storage file according to claim 2.

4. A retaining piece for holding documents bound by the binding device is provided on the inner surface of the front cover or the back cover. The storage file according to claim 1.

5. The retaining piece is in the form of a sheet and is formed in a pentagonal shape in plan view, and has an attachment portion that is attached along the upper or lower edge of the front cover or the back cover. The storage file according to claim 4.

6. The retaining piece has a rectangular retaining portion in plan view that extends from the mounting portion to the inner surface of the front cover or the back cover, and a triangular gripping portion in plan view. The storage file according to claim 5.