JPH065982U - Drawing file - Google Patents

Abstract

(57) [Abstract] [Purpose] The durability and reliability of the engagement projections and engagement holes that expand and hold each folded piece are improved, and the expansion operation of the surface fastener that attaches both covers is facilitated. Get the drawing file. [Structure] A drawing file is integrally molded from a foamed plastic sheet, and relatively large arc-shaped engaging projections 50 are provided on both end edges of the left and right folding pieces 26, 28, and at the portions separated from the folding lines 18, 20. Surface fasteners 52 are provided, and on the other hand, the upper and lower folding pieces 30, 32 are provided with oval engagement holes 5 at both ends thereof to engage with the engaging projections 50 of the left and right folding pieces.
4 is provided, and a window hole 56 for exposing this is provided at a portion of the left and right folded piece corresponding to the surface fastener 52.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a drawing file in which a drawing or a relatively large sheet or the like (hereinafter simply referred to as a drawing) is stored without being folded.

[0002]

[Prior art]

 Generally, as shown in FIG. 7, this type of drawing file forms both left and right covers 14 and 16 at the central portion in the longitudinal direction of the cover body 10 with a fold line 12 between them, and the left, right, upper and lower ends of the cover body 10. Left and right and up and down folding pieces 26, 28, 30, 32 are extended at the edge portions so that they can be sequentially folded (see FIG. 8) through folding lines 18, 20, 22, 24, respectively, and thereby both cover sheets 14, 16 are formed. At the time of folding, the partition lines 10a, 26a, 28a, 30a and 32a are formed at the fold lines 18, 20, 22, 24 (see FIGS. 9 and 10) so that a relatively large number of drawings can be accommodated and stored. It is configured.

In such a configuration (especially for a relatively large drawing file), the material is lightweight and tactile so that it can be easily taken in and out without damaging the drawing. Formed from excellent cardboard. Preferably, each folded piece is provided with a holding means for holding it in a half-open folded state, and both left and right covers are provided with fastening means for fastening it in a folded state. That is, in the illustrated drawing file, the left and right folding pieces 26, 28 and the upper and lower folding pieces 30, 32 are provided with engaging notches 34, hook-and-loop fasteners 36, engaging notches 38, and windows, respectively, at both edge portions thereof. A hole 40 is provided. Then, in this case, when the left and right folding pieces 26, 28 are opened, the engaging cutout portion 34 slides on the inner surfaces of the upper and lower folding pieces 30, 32 to open the same, and the engaging cutout portion 38 is formed. Holding means (42) is formed by locking (FIG. 10) and holding each folded piece in a half-open folded state. On the other hand, when the upper and lower folded pieces 30, 32 are folded and stacked on the left and right folded pieces 26, 28 (FIG. 8), the hook-and-loop fastener 36 is exposed from the window hole 40 to form the engaging means 44, and When both covers 14, 16 are folded, they are fastened in place. In addition, reference numeral 46 in the drawing indicates a folding portion provided at a portion corresponding to the folding portion (partition wall 10a) of the left and right cover sheets 14 and 16.

[0004]

[Problems to be solved by the device]

 However, the above-mentioned conventional drawing file has some drawbacks to be improved, as described below.

That is, first of all, the holding means 42 for holding each folded piece in a half-open folded folded state is composed of the respective engaging notches 34, 38 provided in the left and right folded pieces and the upper and lower folded pieces. These engaging cutouts have relatively small projections, in particular one engaging cutout 34 always slides on the other folding piece, and since they are made of cardboard, each The engagement notches 34 and 38 are worn, deformed or damaged. Therefore, there is a drawback that the durability or reliability of the holding means 42 is impaired. Next, as shown in the figure, the engaging means 44 (surface fastener 36) for engaging the left and right cover sheets 14 and 16 in a folded state is conventionally close to the partition walls 26a and 28a of the left and right folding pieces 26 and 28 ( In other words, it is provided close to the left and right edge portions of both the left and right covers, but with this configuration, it is difficult to insert the fingertip between the left and right covers that are fastened (see Fig. 9), and There was a problem that it was difficult to open the left and right covers.

Therefore, an object of the present invention is to improve the durability and reliability of the holding means for holding each folded piece extending from the cover body in a half-open folded state, and to attach both the left and right covers. Another object of the present invention is to provide a drawing file that can easily open and close the fastening means.

[0007]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the drawing file according to the present invention forms both left and right covers through a folding line in the longitudinal center of the cover body, and the left, right, upper and lower edge parts of the cover body. In the drawing file in which the left and right and upper and lower folding pieces are sequentially foldable through folding lines, the drawing file is integrally molded from a foamed plastic sheet, and the left and right folding pieces have both end edges at their edges. In addition to providing engaging projections, surface fasteners that engage with each other when the left and right covers are folded are provided in the part away from the folding line, and the upper and lower folding pieces engage with the engaging projections of the left and right folding pieces at both end edges thereof. In addition, an engaging hole for holding both folded back pieces in a half-open folded state is provided, and a folding portion is provided at a portion corresponding to the folded portion of both left and right covers.

In this case, the hook-and-loop fasteners are provided at both ends of the left and right folding pieces, and at least one of them is provided in a portion separated from the folding line, and a window hole is provided in a portion of the up-and-down folding piece corresponding to the above-mentioned fasteners. Are formed.

[0009]

[Action]

 According to the present invention, the holding means for holding each folded piece extending from the cover body in the half-open folded state is composed of a relatively large engaging projection and an engaging hole provided on each folded piece. Moreover, each of the folded pieces is made of a tough foamed plastic sheet. Therefore, the holding means can sufficiently improve its durability and reliability. Further, the fastening means for fastening the left and right cover sheets is provided at a portion separated from the folding line of the left and right folded pieces, that is, a portion separated from the left and right end edges of the left and right cover sheets, and the folded pieces and The cover is made of an elastic plastic sheet. Therefore, the engaging means can be easily expanded.

[0010]

【Example】

 An embodiment of a drawing file according to the present invention will be described below in detail with reference to the accompanying drawings. For convenience of explanation, the same components as those of the conventional structure shown in FIGS. 7 to 10 are designated by the same reference numerals, and detailed description thereof will be omitted.

Referring to FIG. 1, the basic structure of the drawing file of the present invention is the same as the conventional structure described above. It should be noted that although overlapping, but briefly described again, the drawing file forms both left and right covers 14, 16 at the central portion in the longitudinal direction of the cover body 10 through the fold line 12, and at the same time, the left, right, upper and lower ends of the cover body 10. Left and right and upper and lower folding pieces 26, 28, 30, 32 are sequentially extended at the edges via folding lines 18, 20, 22, 24 so that they can be sequentially folded (see FIG. 2). At the time of folding, the partition walls 10a, 26a, 28a, 30a and 32a are formed on the fold lines 18, 20, 22 and 24 (see FIGS. 3 to 6).

However, in the present invention, first of all, the drawing file is integrally formed from a foamed plastic sheet (for example, a highly foamed plastic sheet having a foaming ratio of 2 to 3 times). Here, this foamed plastic sheet has the lightness and feel comparable to that of cardboard, and has the excellent advantage of exhibiting the toughness and elasticity that cardboard lacks.

Next, the left and right folding pieces 26, 28 are provided with relatively large arc-shaped engaging projections 50 on both end edges thereof, and both end portions of the portion separated from the folding lines 18, 20 are folded. At both ends of the part separated by a distance L (see FIG. 3) from the left and right end edges of the left and right cover sheets 14 and 16 when folded, the hook-and-loop fasteners that engage with each other when the left and right cover sheets 14 and 16 are folded. 52 is provided. On the other hand, the upper and lower folding pieces 30, 32 are oval-shaped engaging members which engage with the engaging protrusions 50 of the left and right folding pieces 26, 28 at both end edges thereof and hold the folding pieces in a half-open folded state. A fitting hole 54 and a window hole 56 corresponding to the surface fastener 52 of the left and right folding pieces 26, 28 and exposing the same are provided. Further, a folding section 46 is formed at a portion of the left and right cover sheets 14 and 16 corresponding to the folding section 10a. That is, the engaging projection 50 and the engaging hole 54 constitute the holding means 58, and the hook-and-loop fastener 52 and the window hole 56 constitute the engaging means 60. Here, the separation distance L is preferably set to 5 cm or more, but the separation distance L may be applied to only one of the engaging means 60 as shown in FIG.

According to the present invention having such a structure, as shown in FIG. 5, in the holding means 58, when the left and right folding pieces 26 and 28 are expanded, the engaging projection 50 thereof is arranged to be the vertical folding piece 30. , 32 by slidingly engaging the engaging holes 56 with each other, the folding pieces 26, 28, 30, 32 are expanded and maintained in this state. However, in this expansion holding operation, the holding means 58 is composed of a relatively large arcuate projection 50 and an oval hole 56, and the drawing file is composed of a tough foam plastic sheet. Therefore, no wear or damage occurs. That is, the durability and reliability of the holding means 58 are sufficiently ensured. The fastening means 60 is provided at a distance L from the left and right edge portions of the left and right cover sheets 14 and 16, and the drawing file is made of an elastic foam plastic sheet. Therefore, as shown in FIG. 4, the left and right front cover sheets 14 and 16 can be easily inserted with their fingertips apart from each other when the edges are slightly curved when they are expanded. That is, the engaging means 60 can be easily expanded. In this case, it is clear that the expansion can be further facilitated by manipulating the intermediate portion between the two engaging portions 60, 60, and also in the embodiment shown in FIG. By operating the attachment portion 60, it is also possible to easily open the same.

As described above, according to the present invention, it is possible to improve the durability and reliability of the holding means that holds each folded piece extending from the cover body in the half-open folded state, and at the same time, for both left and right sides. It is possible to easily perform the expanding operation of the fastening means for fastening the cover sheet.

The present invention has been described above with reference to a preferred embodiment, but the present invention is not limited to the above-described embodiment, and many improvements and modifications can be made without departing from the spirit thereof.

[0017]

[Effect of device]

 As described above, the drawing file according to the present invention forms both left and right covers through the folding line in the center of the cover body in the longitudinal direction, and also through the folding lines at the left and right and upper and lower edges of the cover body. In the drawing file in which the left and right and top and bottom folded pieces are sequentially foldable and extended, the drawing file is integrally molded from a foamed plastic sheet, and the left and right folded pieces are provided with engaging protrusions on both end edges thereof. Surface fasteners that engage with each other when the left and right covers are folded are provided in the part separated from the folding line, and the upper and lower folding pieces are engaged with the engaging protrusions of the left and right folding pieces at both end edges thereof to open the folding pieces halfway. The folded holes are held in a folded state and the folding parts are provided at the parts corresponding to the folded parts of the left and right covers so that each folded piece is held in a half-open folded state. The holding means (that is, the engaging projection and the engaging hole) is formed by a relatively large arc-shaped projection and an oval hole, and the drawing file is composed of a tough foam plastic sheet. , Its durability and reliability can be sufficiently secured.

Further, the fastening means for fastening the left and right covers, that is, the surface fasteners, can be provided at a predetermined distance from the left and right end edges of the left and right covers, and the drawing file can be made of elastic plastic foam. Since it is composed of a seat, the expansion operation can be easily achieved.

[Brief description of drawings]

FIG. 1 is a developed plan view illustrating an embodiment of a drawing file according to the present invention.

FIG. 2 is a partial plan view showing a state in which folded pieces of the drawing file shown in FIG. 1 are folded and stacked.

FIG. 3 is a perspective view showing a state in which both covers of the drawing file shown in FIG. 1 are folded.

4 is a sectional view taken along line IV-IV in FIG.

FIG. 5 is a perspective view showing a state in which each folded piece is held in a half-open folded state in a portion A of FIG.

FIG. 6 is a perspective view corresponding to FIG. 3, showing another embodiment of the drawing file according to the present invention.

FIG. 7 is a developed plan view showing a conventional drawing file.

8 is a partial plan view showing a state in which folded pieces of the drawing file shown in FIG. 7 are folded and stacked.

9 is a perspective view showing a state in which both covers of the drawing file shown in FIG. 7 are folded.

FIG. 10 is a perspective view showing a state in which each folded piece is held in a half-open folded state in a portion B of FIG.

[Explanation of symbols]

10 Cover body 12,18,2
0,22,24 Folded line 14,16 Cover 26,28,3
0, 32 Folding piece 10a, 26a, 28a, 30a, 32a Partition wall 46 Folding portion 50 Engaging protrusion 52 Surface fastener 54 Engaging hole 56 Window hole 58 Holding means 60 Engaging means

Claims (2)

[Scope of utility model registration request] 1. A left and right cover sheet is formed at a central portion in the longitudinal direction of a cover body via folding lines, and left, right and upper and lower folded pieces are sequentially folded at the left, right and upper and lower edge portions of the cover body through folding lines, respectively. In the drawing file that is extended as much as possible, the drawing file is integrally molded from a foamed plastic sheet, and the left and right folding pieces are provided with engaging protrusions at both end edges thereof, and both left and right cover sheets are provided at a portion separated from the folding line. Surface fasteners that are engaged with each other when the folding pieces are folded, and engaging holes that engage the engaging protrusions of the left and right folding pieces at both end edges of the upper and lower folding pieces to hold the folding pieces in a half-open folded state. In addition to the above, the drawing file is characterized in that a folding portion is provided at a portion corresponding to the folding portions of both left and right covers. 2. The hook-and-loop fasteners are provided at both ends of the left and right folded piece, and at least one of them is provided in a portion separated from the folding line, and a window hole is formed in a portion of the up-and-down folded piece corresponding to the hook-and-loop fastener. The drawing file according to claim 1.