file
The self-standing file design with wider bottom bellows sheet fold lines allows for a V-shaped wide opening and stable self-standing, enhancing usability and accessibility.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Utility models
- Current Assignee / Owner
- SEKISEI
- Filing Date
- 2026-05-25
- Publication Date
- 2026-07-23
AI Technical Summary
Existing self-standing files with bellows sheets have difficulty in opening wider than a U-shape due to the contracting force of the bellows, limiting their usability and accessibility.
A self-standing file design with a cover composed of front, back, and spine covers, featuring expandable and contractible bellows sheets at the front, rear, and bottom, and multiple partition sheets forming pockets, where the bottom bellows sheet has a wider fold line width than the front, allowing for a wider V-shaped opening and stable self-standing.
The cover can be opened wide in a V-shape, enabling easy access to and storage of documents, while maintaining a slim profile when closed, and ensuring stable self-standing.
Smart Images
Figure 0003256699000001_ABST
Abstract
Description
Technical Field
[0004] ,
[0006] , , , , , ,
[0005] , , , , , , ,
[0001] This invention relates to a self - standing file.
Background Art
[0002] Patent Document 1 discloses a file including a cover composed of a front cover, a back cover, and a spine cover, and a storage part formed by bellows sheets on the front part, the back part, and the bottom part.
Prior Art Document
Patent Document
[0003]
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0004] In the file described in Patent Document 1, the spine width of the spine cover is formed to be relatively wide so that the cover becomes U - shaped, and by configuring the storage part with bellows sheets, the cover is kept in a self - standing state when opened. However, it is difficult to open the cover wider than the U - shape due to the rebounding (contracting force) of the bellows of the bellows sheets.
[0005] [[ID=�8]] This invention has been made in view of the above circumstances, and an object thereof is to provide a self - standing file that can open the cover widely.
Means for Solving the Problems
[0006] A file according to one aspect of this invention includes a cover composed of a front cover, a back cover, and a spine cover, and a storage part formed by bellows sheets joined to the inner surface of the cover, and is a file that can be self - standing when the cover is opened, wherein the storage part A front accordion sheet disposed at the front of the cover, a rear accordion sheet disposed at the rear of the cover, and a bottom accordion sheet disposed at the bottom of the cover, The system comprises multiple partition sheets, each of which has three sides joined to the bellows sheet on each surface to form multiple pocket sections. Each of the aforementioned bellows sheets is constructed to be expandable and contractible by creating multiple folds in a rectangular sheet to form peaks and valleys. The bottom bellows sheet has a configuration in which the width between the fold lines is wider than the width between the fold lines of the front bellows sheet. [Effects of the Invention]
[0007] According to this invention, the cover can be opened wide in a roughly V-shape, and each pocket can also be opened wide. Furthermore, the file can stand upright stably when the cover is opened wide, and it is easier to put documents and other items into and out of the pockets when the cover is open. [Brief explanation of the drawing]
[0008] [Figure 1] This is a perspective view showing the file in an upright position with its cover open, according to the embodiment. [Figure 2] This diagram shows the left side (Figure 2(a)), front (Figure 2(b)), and right side (Figure 2(c)) of the file with the cover closed, according to the embodiment. [Figure 3] This is an exploded perspective view showing the storage compartment in a disassembled state. [Figure 4] This is a perspective view showing the cover as seen from the inside. [Modes for carrying out the invention]
[0009] Embodiments of the present invention will be described below with reference to the attached drawings. As shown in Figures 1 and 2, the file 1 of the embodiment comprises a cover 2 and a storage section 6 disposed inside the cover 2 and having a plurality of pocket sections 11, and is configured to stand upright when the cover 2 is open.
[0010] The cover 2 is integrally constructed from a rectangular front cover 3, back cover 4, and spine 5. The cover 2 is made of a thick resin sheet. However, the cover 2 may also be made of a paper sheet. The spine 5 has a narrow spine width. Therefore, when the cover 2 is closed, it can be made into a slim file 1 with a narrow spine width (see Figure 2(b)).
[0011] As shown in Figure 3, the storage section 6 comprises three bellows sheets 7, 8, and 9 joined to the inner surface of the cover 2, and multiple partition sheets 10 (only one is shown in Figure 3) that form multiple pocket sections 11. The bellows sheets 7, 8, and 9 are made of thin, rectangular resin sheets with multiple fold lines, and each fold line is alternately folded into a mountain and valley to form peaks and valleys, making them expandable and contractible, and are arranged at the front, back, and bottom of the cover 2, respectively. The partition sheet 10 is made of a thin, deformed triangular resin sheet with an inclined portion 15 on the front side of its upper edge.
[0012] The storage section 6 is composed of a front accordion sheet 7 located at the front of the cover 2, a rear accordion sheet 8 located at the rear of the cover 2, a bottom accordion sheet 9 located at the bottom of the cover 2, and a plurality of partition sheets 10 that are joined on three sides to these accordion sheets 7, 8, and 9 to form a plurality of pocket sections 11.
[0013] The partition sheet 10 is provided with connecting pieces 12a, 12b, and 12c on its front, rear, and bottom edges. Each connecting piece 12a, 12b, and 12c of the partition sheet 10 is joined by welding to the inclined surface of the bellows of the bellows sheets 7, 8, and 9 on their respective faces. Specifically, the connecting piece 12a on the front edge of the partition sheet 10 is joined to the front bellows sheet 7, the connecting piece 12b on the rear edge of the partition sheet 10 is joined to the rear bellows sheet 8, and the connecting piece 12c on the bottom edge of the partition sheet 10 is joined to the bottom bellows sheet 9. This forms a storage area 6 that is partitioned by each partition sheet 10 and has a pocket portion 11 with an open upper end.
[0014] The front bellows sheet 7, the rear bellows sheet 8, and the bottom bellows sheet 9 are each provided with connecting pieces 13a, 13b, and 13c at both ends. The connecting pieces 13a, 13b, and 13c of the bellows sheets 7, 8, and 9 on each side are joined by welding to the mounting portions 14a, 14b, and 14c on the inner surfaces of the front cover 3 and back cover 4 that are opposite to them. Specifically, referring to Figure 4, the connecting piece 13a of the front bellows sheet 7 is joined to the mounting portion 14a at the front of the cover 2, the connecting piece 13b of the rear bellows sheet 8 is joined to the mounting portion 14b at the rear of the cover 2, and the connecting piece 13c of the bottom bellows sheet 9 is joined to the mounting portion 14c at the bottom of the cover 2. This forms a file 1 with a storage section 6 having multiple pockets 11 inside the cover 2.
[0015] In file 1 of this embodiment, referring to Figure 3, the rib width W2 between the folds of the bottom bellows sheet 9 and the rib width W3 between the folds of the rear bellows sheet 8 are set to the same width (W2=W3). The rib width W2 between the folds of the bottom bellows sheet 9 and the rib width W3 between the folds of the rear bellows sheet 8 are set to be wider than the rib width W1 between the folds of the front bellows sheet 7 (W2,W3>W1). In this embodiment, the rib widths W2 and W3 between the folds of the bottom bellows sheet 9 and the rear bellows sheet 8 are set to twice the rib width W1 between the folds of the front bellows sheet 7. Alternatively, the rib widths W2 and W3 between the folds of the bottom bellows sheet 9 and the rear bellows sheet 8 may be set in the range of 1.5 to 3 times the rib width W1 between the folds of the front bellows sheet 7.
[0016] From the above configuration, by forming the rib width W2 between the creases of the bottom bellows sheet 9 wider than the rib width W1 between the creases of the front bellows sheet 7, the peaks of the bellows of the bottom bellows sheet 9 become larger than those of the front bellows sheet 7. As a result, the expansion and contraction force of the front bellows sheet 7 is strong, and the expansion and contraction force of the bottom bellows sheet 9 is weak. Thus, when the cover 2 is opened, the bottom bellows sheet 9 can expand widely and open the cover 2 in a substantially U-shaped or wider shape, and each pocket portion 11 can also be opened widely. Further, the strong stretching force of the front bellows sheet 7 acts to maintain the state in which the cover 2 is widely opened in a substantially U-shaped. As a result, the file 1 can be stably self-standing in the state where the cover 2 is widely opened in a substantially U-shaped. Therefore, the effect that it is easy to take in and out articles (not shown) such as documents into and from the pocket portion 11 when the cover 2 is opened is obtained.
[0017] Further, since the peaks of the bellows of the rear bellows sheet 8 are large, the rear bellows sheet 8 can be folded thinly while suppressing the repulsion of the bellows. As a result, the back width of the back cover 5 can be made narrow, and a slim file 1 (see Fig. 2(b)) with a narrow back width in the state where the cover 2 is closed can be easily obtained. Therefore, in the state where the file 1 is closed, it can be neatly stored without taking up a large space on a bookshelf or the like. Furthermore, even if the back width is made narrow, the cover 2 can be widely opened in a substantially U-shaped to stably self-stand the file 1.
[0018] In the present embodiment, further, as shown in the position of the dotted line in Fig. 3, the plurality of partition sheets 10 are joined to the bottom bellows sheet 9 and the rear bellows sheet 8 for each peak of the bellows, and are joined to the front bellows sheet 7 for every two peaks of the bellows. Note that the plurality of partition sheets 10 may be joined to the front bellows sheet 7 for every two or more peaks of the bellows (for example, from two to four peaks).
[0019] According to this configuration, one valley of the bottom bellows sheet 9 and one valley of the rear bellows sheet 8 are assigned to one pocket portion 11, and two valleys of the front bellows sheet 7 are assigned to it. That is, since the number of valleys of the front bellows sheet 7 is large in one pocket portion 11, a larger stretching force acts on the front portion of the pocket portion 11. Since the cover 2 opens in a fan shape, when the cover 2 is opened, the accommodating portion 6 opens most widely at the front surface (corresponding to the outermost periphery of the fan shape), and a strong stretching force of the front bellows sheet 7 acts. Therefore, when the cover 2 is opened, each pocket portion 11 can be further opened by the front bellows sheet 7 arranged in two rows at the front portion of each pocket portion 11.
[0020] As described above, according to the file 1 of the present embodiment, the cover 2 can be widely opened in a substantially V shape, and each pocket portion 11 can be widely opened. And, although it is a file 1 with a narrow back width, the file 1 can be stably made to stand on its own in a state where the cover 2 is widely opened, and further, there is an effect that it is easy to take in and out articles such as documents into and from the pocket portion 11 when the cover 2 is opened.
[0021] Since each partition sheet 10 has an inclined portion 15 whose front side of the upper side becomes lower toward the front end, a wide space is secured above the front side of the accommodating portion 6 (see FIG. 1), and it is easier to take in and out articles such as documents from the upper front side of the file 1 to each pocket portion 11.
[0022] The height of the rear portion of the accommodating portion 6 is arranged at a position lower than the height of the cover 2 (see FIG. 1), and since the documents etc. accommodated in the pocket portion 11 protrude upward from the upper end of the pocket portion 11, when taking out the documents etc. from the pocket portion 11, only the documents etc. can be easily grasped and taken out, which is convenient for the user.
[0023] Notches 16a and 16b (see Figure 3) are provided at the rear of the upper edge of the partition sheet 10 and at both ends of the upper edge of the rear bellows sheet 8. These notches allow the load associated with inserting and removing documents and other items from the pocket section 11 to be relieved, thereby suppressing damage to the partition sheet 10 and the rear bellows sheet 8.
[0024] The file 1 opens naturally due to the stretching force of the front bellows sheet 7, but the front cover 3 is provided with a band 17, and as shown in Figure 2, the band 17 can be looped over the back cover 4 when the front cover 2 is closed to prevent the front cover 2 from opening on its own, thus ensuring that the slim file 1 is reliably maintained when closed.
[0025] A flattened, cylindrical pen holder 18 (see Figure 4) is provided on the upper front of the inside surface of the front cover 3, allowing writing instruments to be held in place, making it convenient for the user.
[0026] An outer pocket 19 (see Figures 1 and 2) is provided on the outer side of the front cover 3, allowing documents to be stored in this outer pocket 19 as well, making it convenient for the user.
[0027] Furthermore, this invention is not limited to the embodiments described above, and various modifications can be made without departing from the technical concept of this invention as defined in the claims for utility model registration. [Explanation of symbols]
[0028] 1 file 2 Cover 3 Front Cover 4 Back cover 5. Spine 6. Storage area 7. Front bellows sheet 8. Rear bellows seat 9. Bottom bellows sheet 10 divider sheets 11 Pocket section 12a, 12b, 12c Joining pieces for partition sheets 13a Joining piece of front bellows sheet 13b Joining piece of rear bellows sheet 13c Joining piece of bottom bellows sheet 14a, 14b, 14c Mounting part 15 Slope 16a Notch in the partition sheet 16b Notch in the rear bellows sheet 17 bands 18 Pen Holder 19. Outer pockets
Claims
1. A file comprising a cover consisting of a front cover, a back cover, and a spine, and a storage compartment formed by an accordion sheet joined to the inner surface of the cover, wherein the file is able to stand upright when the cover is open, The aforementioned housing section is A front accordion sheet disposed at the front of the cover, a rear accordion sheet disposed at the rear of the cover, and a bottom accordion sheet disposed at the bottom of the cover, The system comprises multiple partition sheets, each of which has three sides joined to the bellows sheet on each surface to form multiple pocket sections. Each of the aforementioned bellows sheets is constructed to be expandable and contractible by creating multiple folds in a rectangular sheet to form peaks and valleys. The width between the fold lines of the bottom bellows sheet is wider than the width between the fold lines of the front bellows sheet, in the file.
2. The file according to claim 1, wherein the width of the ribs between the fold lines of the rear bellows sheet is wider than the width of the ribs between the fold lines of the front bellows sheet.
3. The file according to claim 1 or 2, wherein the plurality of partition sheets are joined to the bottom bellows sheet and the rear bellows sheet at each bellows ridge, and to the front bellows sheet at every two or more bellows ridges.