Extensible file rack

Abstract

The utility model discloses an extensible file rack which is formed by folding an integrated sheet, the integrated sheet is provided with a plurality of structural sheets and lap joint sheets in a partitioned mode through crease lines, and the structural sheets comprise a face plate sheet, a first side plate sheet, a second side plate sheet, a bottom plate sheet and a back plate sheet. The lap joint pieces comprise the first lap joint piece which is formed below the second side plate piece and matched with the bottom plate piece in a lap joint mode, and the second lap joint piece which is formed on the outer side of the first side plate piece and matched with the back plate piece in a lap joint mode. The integrated sheet is further provided with an expansion structure, the expansion structure comprises an insertion piece and an insertion hole which are formed in the structure piece, the insertion piece is formed by cutting along the cutting seam, and when two adjacent expandable file racks are attached together, the insertion hole is formed in the insertion piece. Wherein the inserting piece of one extensible document holder can be inserted into the inserting hole of the other extensible document holder, so that the extensible connection of two adjacent extensible document holders is realized. The foldable storage box is simple in splicing and stable in structure, and the storage space can be expanded according to needs.

Description

Technical Field

[0001] The utility model belongs to the technical field of office supplies, and particularly relates to an expandable document rack. Background Art

[0002] For convenient access, frequently used documents and books are usually placed on the desktop. To keep the desktop tidy, people usually use a document rack to classify and store documents and books. The structure of the traditional document rack is that several partition plates are inserted on a bottom plate, and a front panel and a back panel are respectively clamped on the front and rear sides of the partition plates, so that each partition plate can be stably inserted on the bottom plate. It uses the partitioning and supporting functions of the partition plates to classify and store documents and books. However, the above traditional document rack has the following disadvantages in the use process: First, the traditional document rack is a split type with many components, which is rather complicated in splicing and assembling, and the components are easy to be lost during transfer, making it inconvenient to use. Moreover, the size of the traditional document rack is limited by the bottom plate, the front panel and the back panel, and its storage space is fixed, and it is impossible to flexibly change the storage space of the document rack according to actual needs. Summary of the Invention

[0003] Aiming at the problems of complicated assembly, fixed size and storage space of the document rack in the prior art, the utility model provides an expandable document rack. The invention purpose of the utility model is realized through the following technical solutions:

[0004] An expandable document rack is folded from an integral sheet. The integral sheet is partitioned by crease lines into multiple structural sheets and overlapping sheets. The structural sheets include a front panel sheet, a first side panel sheet, a second side panel sheet, a bottom plate sheet and a back panel sheet. The first side panel sheet and the second side panel sheet are respectively arranged on both sides of the front panel sheet. The bottom plate sheet is arranged below the first side panel sheet. The back panel sheet is arranged outside the second side panel sheet. The overlapping sheets include a first overlapping sheet formed below the second side panel sheet and overlapping with the bottom plate sheet, and a second overlapping sheet formed outside the first side panel sheet and overlapping with the back panel sheet. An expansion structure is also arranged on the integral sheet. The expansion structure includes insertion sheets and insertion holes formed on the structural sheets. The insertion sheets are cut along cutting seams. When two adjacent expandable document racks are placed close to each other, the insertion sheet of one expandable document rack can be inserted into the insertion hole of the other expandable document rack to realize the expansion connection of the two adjacent expandable document racks.

[0005] Preferably, there are two insertion sheets, namely a first insertion sheet and a second insertion sheet, both of which are cut and formed on the second side panel sheet. There are two groups of insertion holes, namely a first insertion pair hole and a second insertion pair hole. The first insertion pair hole is opened on the back panel sheet, and the second insertion pair hole is opened on the bottom plate sheet.

[0006] Preferably, the first plug-in piece includes a first connecting strip and a first plug connector formed at the front end of the first connecting strip. The first plug connector includes a first wing portion protruding from the side of the first connecting strip. The second plug-in piece includes a second connecting strip and a second plug connector formed at the front end of the second connecting strip. The second plug connector includes a second wing portion protruding from the side of the second connecting strip. The first plugging pair of holes is composed of two first strip-shaped holes, and the second plugging pair of holes is composed of two second strip-shaped holes.

[0007] Preferably, the distance between the two first strip-shaped holes is adapted to the width of the first connecting strip, and the length of the first strip-shaped hole is adapted to the maximum length of the first wing portion. The distance between the two second strip-shaped holes is adapted to the width of the second connecting strip, and the length of the second strip-shaped hole is adapted to the maximum length of the second wing portion.

[0008] Preferably, the crease line includes a first crease line between the second side plate piece and the back plate piece, and a second crease line between the second side plate piece and the first overlapping piece. The first crease line and the second crease line are perpendicular to each other.

[0009] Preferably, the first plug-in piece is vertically arranged on the first crease line, and the tail end of the first connecting strip is connected to the first crease line. The second plug-in piece is vertically arranged on the second crease line, and the tail end of the second connecting strip is connected to the second crease line.

[0010] Preferably, the first overlapping piece includes two conical pieces. An arc head is formed at the front end of each conical piece, and an arc cutting piece symmetrical to the arc head is formed at the tail end of each conical piece. Two square holes for cooperating with the conical pieces are formed on the bottom plate piece, and the width of the square hole is adapted to the maximum width of the arc head and the arc cutting piece.

[0011] Preferably, the second overlapping piece is a trapezoidal piece, and there are multiple second overlapping pieces, which are spaced along the length direction of the first side plate piece. A first extension piece is provided on the side of the back plate piece, and multiple overlapping seams for cooperating with the second overlapping pieces are formed on the connection line between the first extension piece and the back plate piece.

[0012] Preferably, the height of the panel piece is lower than the height of the back plate piece.

[0013] Preferably, the first side plate piece has a first arc-shaped inner edge connected to the panel piece, and the second side plate piece has a second arc-shaped inner edge connected to the panel piece. The first arc-shaped inner edge and the second arc-shaped inner edge are symmetrically arranged.

[0014] Compared with the prior art, the utility model has the following technical effects: The whole document rack is of a one-piece structure, which is convenient to splice and use; By setting an expansion structure, the expansion of the document rack can be realized, so that the size and storage space of the document rack can adapt to different use environments; The position of the insertion piece structure is reasonably set, and the cooperation of two insertion pieces and two groups of insertion holes can realize the stable connection of two adjacent document racks; The insertion piece is cut from the inherent structural piece of the document rack without damaging the structural integrity of the document rack; The first overlapping piece structure is reasonably set, and the two conical pieces can effectively improve the bearing capacity of the bottom plate piece and enhance the structural strength of the whole document rack. Description of the Drawings

[0015] Figure 1 is a schematic structural diagram of the utility model;

[0016] Figure 2 is a schematic structural diagram of the first overlapping piece in the utility model;

[0017] Figure 3 is a schematic structural diagram of the second side plate piece in the utility model;

[0018] Reference numerals in the drawings: panel piece 11; first side plate piece 12; first arcuate inner edge 121; second side plate piece 13; second arcuate inner edge 131; bottom plate piece 14; back plate piece 15; first overlapping piece 21; conical piece 211; arcuate head 2111; arcuate cut piece 2112; second overlapping piece 22; square hole 23; overlapping seam 24; first extension piece 25; first crease line 31; second crease line 32; first insertion piece 41; first insertion head 411; first wing part 4111; first connecting strip 412; second insertion piece 42; second insertion head 421; second wing part 4211; second connecting strip 422; first insertion hole 43; second insertion hole 44. Detailed Embodiments

[0019] The following further describes the utility model in conjunction with the embodiments shown in the drawings:

[0020] See Figures 1 - 3, this embodiment discloses an expandable document rack, which is folded from an integral sheet. The integral sheet is partitioned by crease lines into multiple structural sheets and overlapping sheets. The structural sheets include a front panel sheet 11, a first side panel sheet 12, a second side panel sheet 13, a bottom panel sheet 14, and a back panel sheet 15. The first side panel sheet 12 and the second side panel sheet 13 are respectively arranged on both sides of the front panel sheet 11. The bottom panel sheet 14 is arranged below the first side panel sheet 12, and the back panel sheet 15 is arranged outside the second side panel sheet 13. The overlapping sheets include a first overlapping sheet 21 formed below the second side panel sheet 13 and overlapping with the bottom panel sheet 14, and a second overlapping sheet 22 formed outside the first side panel sheet 12 and overlapping with the back panel sheet 15. The multiple structural sheets are folded along the crease lines, and then the overlapping sheets are overlapped with the corresponding structural sheets, and a box-shaped document rack with an open upper end can be formed, which is quick to assemble and disassemble and convenient to use.

[0021] An expansion structure is also provided on the integral sheet. The expansion structure includes insertion sheets and insertion holes formed on the structural sheets. The insertion sheets are cut along the cutting seams. When two adjacent expandable document racks are placed close together, the insertion sheet of one expandable document rack can be inserted into the insertion hole of the other expandable document rack to achieve the expansion connection of the two adjacent expandable document racks, so as to expand the storage space of the document rack as needed according to actual requirements.

[0022] The first insertion sheet 41 includes a first connecting strip 412 and a first insertion head 411 formed at the front end of the first connecting strip 412. The first insertion head 411 includes a first wing portion 4111 protruding from the side of the first connecting strip 412. The second insertion sheet 42 includes a second connecting strip 422 and a second insertion head 421 formed at the front end of the second connecting strip 422. The second insertion head 421 includes a second wing portion 4211 protruding from the side of the second connecting strip 422. The first insertion pair hole 43 is composed of two first strip-shaped holes, and the second insertion pair hole 44 is composed of two second strip-shaped holes. The distance between the two first strip-shaped holes is adapted to the width of the first connecting strip 412, and the length of the first strip-shaped hole is adapted to the maximum length of the first wing portion 4111. The distance between the two second strip-shaped holes is adapted to the width of the second connecting strip 422, and the length of the second strip-shaped hole is adapted to the maximum length of the second wing portion 4211. During the expansion connection, the two first wing portions 4111 of the first insertion sheet 41 are respectively inserted into the two first strip-shaped holes, and the two second wing portions 4211 of the second insertion sheet 42 are respectively inserted into the two second strip-shaped holes, and the expansion connection can be achieved.

[0023] The crease lines include a first crease line 31 located between the second side plate piece 13 and the back plate piece 15, and a second crease line 32 located between the second side plate piece 13 and the first overlapping piece 21. The first crease line 31 and the second crease line 32 are perpendicular to each other. To improve the stability of the extended connection, the first insertion piece 41 is vertically provided on the first crease line 31, and the tail end of the first connection strip 412 is connected to the first crease line 31. The second insertion piece 42 is vertically provided on the second crease line, and the tail end of the second connection strip 422 is connected to the second crease line 32. By optimizing the setting positions and directions of the two insertion pieces, adjacent file holders can simultaneously achieve vertical and horizontal extended connections, the connection is more stable, and the insertion pieces are all cut from the inherent structural pieces of the file holder without damaging the structural integrity of the file holder.

[0024] The first overlapping piece 21 includes two tapered pieces 211. Arc-shaped heads 2111 are formed at the front ends of the tapered pieces 211, and arc-shaped cut pieces 2112 symmetrical to the arc-shaped heads 2111 are formed at the tail ends of the tapered pieces 211. Two square holes 23 for cooperating with the tapered pieces 211 are formed on the bottom plate piece 14. The width of the square hole 23 is adapted to the maximum widths of the arc-shaped head 2111 and the arc-shaped cut piece 2112. When overlapping, the arc-shaped head 2111 and the arc-shaped cut piece 2112 are inserted into the square hole 23 to achieve the overlapping of the first overlapping piece 21 and the bottom plate piece 14, and the two tapered pieces 211 can effectively improve the bearing capacity of the bottom plate piece 14 to improve the structural strength of the entire file holder.

[0025] The second overlapping piece 22 is a trapezoidal piece, and there are multiple second overlapping pieces 22 which are spaced along the length direction of the first side plate piece 12. A first extension piece 25 is provided on the side of the back plate piece 15, and multiple overlapping seams 24 for cooperating with the second overlapping pieces 22 are formed on the connection line between the first extension piece 25 and the back plate piece 15.

[0026] The height of the panel piece 11 is lower than the height of the back plate piece 15, and the first side plate piece 12 has a first arc-shaped inner edge 121 connected to the panel piece 11, and the second side plate piece 13 has a second arc-shaped inner edge 131 connected to the panel piece 11. The first arc-shaped inner edge 121 and the second arc-shaped inner edge 131 are symmetrically arranged, and the two arc-shaped inner edges define a search window with an opening facing forward to facilitate file search.

[0027] It should be understood that in the claims and the description of the present invention, all "including..." should be understood in an open sense, that is, its meaning is equivalent to "at least including...", and should not be understood in a closed sense, that is, its meaning should not be understood as "only including...". The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features.

[0028] As described above, it is only the specific implementation manner of the present utility model. However, the protection scope of the present utility model is not limited thereto. Any changes, modifications, additions or substitutions made by those skilled in the art within the substantial scope of the present utility model shall be covered by the protection scope of the utility model.

Claims

1. An expandable file rack, characterized in that: It is formed by folding an integral sheet material, and the integral sheet material is divided into multiple structural sheets and overlapping sheets by crease lines, and the structural sheets include a panel sheet, a first side panel sheet, a second side panel sheet, a bottom panel sheet and a back panel sheet; the first side panel sheet and the second side panel sheet are respectively arranged on both sides of the panel sheet, the bottom panel sheet is arranged below the first side panel sheet, and the back panel sheet is arranged outside the second side panel sheet; the overlapping sheets include a first overlapping sheet formed below the second side panel sheet and overlapping with the bottom panel sheet, and a second overlapping sheet formed outside the first side panel sheet and overlapping with the back panel sheet; an extension structure is also provided on the integral sheet material, and the extension structure includes a plug-in sheet and a plug-in hole formed on the structural sheet, and the plug-in sheet is cut along the cutting seam. When two adjacent expandable file racks are abutted together, the plug-in sheet of one expandable file rack can be plugged into the plug-in hole of the other expandable file rack to realize the extended connection of the two adjacent expandable file racks.

2. The expandable document rack according to claim 1, characterized in that: There are two plug-in plates, namely the first plug-in plate and the second plug-in plate, and the first plug-in plate and the second plug-in plate are both cut and formed on the second side plate; there are two groups of plug-in holes, namely the first plug-in pair holes and the second plug-in pair holes, wherein the first plug-in pair holes are opened on the back plate, and the second plug-in pair holes are opened on the bottom plate.

3. The expandable document rack according to claim 2, characterized in that: The first plug-in piece includes a first connecting strip and a first plug connector formed at the front end of the first connecting strip, the first plug connector includes a first side wing portion protruding from the side of the first connecting strip, the second plug-in piece includes a second connecting strip and a second plug connector formed at the front end of the second connecting strip, the second plug connector includes a second side wing portion protruding from the side of the second connecting strip; the first plug-in pair of holes is composed of two first strip-shaped holes, and the second plug-in pair of holes is composed of two second strip-shaped holes.

4. The expandable document rack according to claim 3, characterized in that: The spacing between the two first strip-shaped holes is adapted to the width of the first connecting strip, and the length of the first strip-shaped hole is adapted to the maximum length of the first side wing; the spacing between the two second strip-shaped holes is adapted to the width of the second connecting strip, and the length of the second strip-shaped hole is adapted to the maximum length of the second side wing.

5. The expandable document rack according to claim 4, characterized in that: The crease lines include a first crease line located between the second side panel and the back panel, and a second crease line located between the second side panel and the first overlapping panel, and the first crease line and the second crease line are perpendicular to each other.

6. The expandable document rack according to claim 5, characterized in that: The first plug-in piece is vertically arranged on the first fold line, and the tail end of the first connecting strip is connected to the first fold line; the second plug-in piece is vertically arranged on the second horizontal fold line, and the tail end of the second connecting strip is connected to the second fold line.

7. An expandable document rack according to any one of claims 1 to 6, characterized in that: The first overlapping piece includes two conical pieces, each of which has an arc-shaped head at its front end and an arc-shaped cutting piece symmetrical to the arc-shaped head at its rear end; the bottom plate piece is provided with two square holes that cooperate with the conical pieces, and the width of the square holes is adapted to the maximum width of the arc-shaped head and the arc-shaped cutting piece.

8. The expandable document rack according to claim 1, characterized in that: The second overlapping piece is a trapezoidal piece, and is provided in plurality, and the plurality of second overlapping pieces are spaced apart along the length direction of the first side panel; the side of the back panel is provided with a first extension piece, and a plurality of overlapping seams cooperating with the second overlapping piece are provided on the connecting line between the first extension piece and the back panel.

9. The expandable document rack according to claim 1, characterized in that: The height of the front plate is lower than that of the back plate.

10. The expandable document rack according to claim 9, characterized in that: The first side plate has a first arc-shaped inner edge connected to the panel plate, and the second side plate has a second arc-shaped inner edge connected to the panel plate. The first arc-shaped inner edge and the second arc-shaped inner edge are symmetrically arranged.

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