CN220594467U - File box - Google Patents

Abstract

The present disclosure relates to a file box that can be unfolded or folded into shape. The file box comprises a box cover, a first box wall, a box back, a second box wall and a first side plate which are connected in sequence by folds along a first direction; a third box wall and a fourth box wall respectively connected with opposite sides of the box back in the second direction by folds; the second side panel with the fold connected to the side of the third box wall opposite the box back and the third side panel with the fold connected to the side of the fourth box wall opposite the box back. The second side plate is provided with a first slot and a second slot, one side of the first side plate away from the second box wall is provided with a first inserting sheet matched with the first slot, and the first inserting sheet extends towards the direction away from the second box wall; the first side plate is also provided with a second inserting piece which is matched with the second inserting groove, and the second inserting piece extends towards the direction close to the second box wall; the length of the first inserting sheet in the first direction is smaller than that of the second inserting sheet in the first direction.

Description

File box

Technical Field

The present disclosure relates to the field of stationery, and in particular, to a file box.

Background

The file box is generally used for storing and accommodating document data. In order to ensure the capacity, the file box is usually in a three-dimensional configuration and has a larger thickness. However, such a file box is easy to consume in transportation and storage space and is easy to break during transportation and storage.

It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the present disclosure and thus may include information that does not constitute prior art known to those of ordinary skill in the art.

Disclosure of Invention

The disclosure aims to provide a file box which can be unfolded or folded for forming.

A file box comprising:

the box cover, the first box wall, the box back, the second box wall and the first side plate are sequentially connected in a crease manner along the first direction;

the first direction is perpendicular to the second direction; the method comprises the steps of,

a second side panel having a fold connected to a side of the third box wall opposite the box back;

a third side panel having a fold connected to a side of the fourth box wall opposite the box back; wherein,

the second side plate is provided with a first slot and a second slot, and the first slot and the second slot are perpendicular to the first direction;

a first inserting piece matched with the first slot is arranged on one side of the first side plate, which is away from the second box wall, and extends towards the direction away from the second box wall; the first side plate is also provided with a second inserting piece which is matched with the second inserting groove, and the second inserting piece extends towards the direction close to the second box wall;

the length of the first inserting sheet in the first direction is smaller than that of the second inserting sheet in the first direction.

In one exemplary embodiment of the present disclosure,

the first inserting sheet is connected with the crease of the first side plate, and the second inserting sheet is connected with the crease of the first side plate;

the maximum value of the width of the first inserting sheet in the second direction is equal to the maximum value of the width of the second inserting sheet in the second direction.

In one exemplary embodiment of the present disclosure,

the whole first inserting piece is semicircular protruding towards the direction away from the second box wall;

the whole second inserting sheet is a triangle with the maximum value of the width of the second inserting sheet in the second direction as the bottom and the length of the second inserting sheet in the first direction as the height.

In one exemplary embodiment of the present disclosure,

the apex angle of the second inserting piece, which is close to the second box wall, is a round angle.

In one exemplary embodiment of the present disclosure,

the first side plate is provided with a missing part at the corresponding position of the second inserting sheet, and the second inserting sheet is positioned in the missing part when the second inserting sheet is parallel to the first side plate.

In one exemplary embodiment of the present disclosure,

the opposite ends of the crease positions of the second inserting sheet and the first side plate are provided with scores along the second direction, so that the width of the crease positions of the second inserting sheet and the first side plate in the second direction is smaller than the maximum value of the width of the second inserting sheet in the second direction.

In one exemplary embodiment of the present disclosure,

the opposite ends of the second slot along the second direction are respectively provided with a reinforcing groove which inclines towards the direction close to the first slot.

In one exemplary embodiment of the present disclosure,

the width of the first slot and the second slot in the first direction is 2 mm-4 mm.

In one exemplary embodiment of the present disclosure,

the third side plate is provided with a third slot and a fourth slot, the third slot and the first slot are symmetrical about a symmetry axis parallel to the first direction, and the fourth slot and the second slot are symmetrical about a symmetry axis parallel to the first direction;

a third inserting sheet matched with the third inserting groove is further arranged on one side, away from the second box wall, of the first side plate, and extends towards the direction away from the second box wall; the first side plate is also provided with a fourth inserting sheet which is matched with the fourth inserting slot, and the fourth inserting sheet extends towards the direction close to the second box wall;

the length of the third inserting sheet in the first direction is smaller than that of the fourth inserting sheet in the first direction.

In one exemplary embodiment of the present disclosure,

the first box wall is provided with a push-pull hole, one surface of the first box wall is provided with an index bag, and the index bag covers the push-pull hole.

The utility model discloses a archives box can expand or fold formation, after folding the archives box of this disclosure into three-dimensional structure, can insert first inserted sheet on the first curb plate in first slot, insert the second inserted sheet on the first curb plate in the second slot, first slot is spacing with the second slot to first inserted sheet and second inserted sheet to make the relative position of first curb plate and second curb plate fixed, and then strengthened the three-dimensional structure of archives box. Because the extending directions of the first inserting sheet and the second inserting sheet are opposite, after the first inserting sheet and the second inserting sheet are respectively inserted into the first inserting groove and the second inserting groove, when the first side plate is impacted at two lateral directions and the relative position of the first side plate and the second side plate is dislocated, the first side plate and the second side plate can be limited in two directions and are not easy to break away from the first inserting groove and the second inserting groove. The length of the first inserting piece is smaller than that of the second inserting piece, and the connection firmness of the second inserting piece and the second inserting groove can be further improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure. It will be apparent to those of ordinary skill in the art that the drawings in the following description are merely examples of the disclosure and that other drawings may be derived from them without undue effort.

For a better understanding of the present disclosure, reference may be made to the embodiments illustrated in the following drawings. The components in the drawings are not necessarily to scale and related elements may be omitted in order to emphasize and clearly illustrate the technical features of the present disclosure. In addition, the relevant elements or components may have different arrangements as known in the art. Furthermore, in the drawings, like reference numerals designate identical or similar parts throughout the several views. Wherein:

FIG. 1 is an expanded schematic view of an exemplary embodiment of a file box of the present disclosure;

FIG. 2 is an expanded schematic view of another view of an exemplary embodiment of a file box of the present disclosure;

FIG. 3 is a schematic view of a first side panel of an exemplary embodiment of a file box of the present disclosure;

FIG. 4 is an expanded schematic view of yet another view of an exemplary embodiment of a file box of the present disclosure;

FIG. 5 is an assembled schematic view of an exemplary embodiment of a file box of the present disclosure;

FIG. 6 is an assembled schematic view of another view of an exemplary embodiment of a file box of the present disclosure;

FIG. 7 is a schematic view of a second side panel of an exemplary embodiment of a file box of the present disclosure;

fig. 8 is a schematic overall structure of an exemplary embodiment of a file box of the present disclosure.

The reference numerals are explained as follows:

1. a box cover; 2. a first box wall; 21. pushing and pulling the hole; 3. a box back; 4. a second box wall; 5. a first side plate; 51. a first insert sheet; 52. a second insert sheet; 521. scoring; 53. a third insert sheet; 54. a fourth insert sheet; 6. a third box wall; 7. a fourth box wall; 8. a second side plate; 81. a first slot; 82. a second slot; 9. a third side plate; 91. a third slot; 92. and a fourth slot.

Detailed Description

The technical solutions in the exemplary embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the exemplary embodiments of the present disclosure. The example embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure, and it is therefore to be understood that various modifications and changes may be made to the example embodiments without departing from the scope of the present disclosure.

Unless specified or indicated otherwise, the terms "coupled," "affixed," and the like are to be construed broadly and are used interchangeably, and are intended to encompass, for example, fixed, removable, or integral, as well as direct, or indirect, via intermediaries. The specific meaning of the terms in the present disclosure may be understood by those skilled in the art according to the specific circumstances.

Further, in the description of the present disclosure, it should be understood that the terms "upper", "lower", "inner", "outer", and the like in the exemplary embodiments of the present disclosure are merely for convenience, and are described according to angles shown in the drawings, or according to the upper and lower relationships when the file box is actually used, and should not be construed as limiting the exemplary embodiments of the present disclosure. Those skilled in the art will appreciate that, after the direction and viewing angle of the file box in the exemplary embodiment of the present disclosure are rotationally changed or changed, the "upper" may be changed to "lower" or "left", "right", "inner" and "outer" as well, and the change may be reversed, which will not obstruct the understanding of those skilled in the art.

In addition, the terms "first" and "second" etc. are used as labels only, and are not limiting on the number of objects thereof.

Because the file box thickness is great, the problem that the free case box occupies a large space in transportation and storage, and is easy to damage and crack exists. In view of the above, the present disclosure provides a file box that can be folded and formed or unfolded from a stereoscopic state of file box forming into a planar structure.

Referring to fig. 1 and 2, for the purpose of clearly explaining the structure of the file box of the present disclosure, the positional relationship of each part in the unfolded state of the file box according to the present disclosure will be described.

The disclosed file box includes: the box cover 1, the first box wall 2, the box back 3, the second box wall 4 and the first side plate 5 are sequentially connected in a crease manner along the first direction; a third box wall 6 and a fourth box wall 7 respectively connected to opposite sides of the box back 3 in a second direction by folds, the first direction being perpendicular to the second direction; and a second side plate 8 with a fold connected to the side of the third box wall 6 opposite the box back 3 and a third side plate 9 with a fold connected to the side of the fourth box wall 7 opposite the box back 3.

The box cover 1, the box back 3, the first box wall 2, the second box wall 4, the third box wall 6, the fourth box wall 7, the first side plate 5, the second side plate 8 and the third side plate 9 can all be flat plate structures, the file box is characterized in that certain two parts of crease lines are connected, the two parts are adjacent, and crease lines are arranged at the connecting positions. When the file box is assembled into a three-dimensional structure, the included angle between the two parts can be changed along the crease lines, so that the file box structure is assembled into a cuboid, and the file box structure is shown with reference to fig. 3 to 6. The box cover 1, the box back 3, the first box wall 2, the second box wall 4, the third box wall 6 and the fourth box wall 7 together form an external structure of the file box, the box cover 1 is used as a cover, the box back 3 forms a back surface of the file box, and the first box wall 2, the second box wall 4, the third box wall 6 and the fourth box wall 7 are respectively a left side surface, a right side surface, an upper side surface and a lower side surface of the file box. The first side panel 5 is folded perpendicular to the second box wall 4, the second side panel 8 is folded perpendicular to the third box wall 6, and the third side panel 9 is folded perpendicular to the fourth box wall 7, i.e. the first side panel 5, the second side panel 8 and the third side panel 9 are all folded in a direction parallel to the back 3 and the lid 1.

It should be emphasized that the sequential connection along the first direction and the sequential connection along the second direction in the present disclosure are described in terms of the state in which the file box is unfolded into a planar structure. It will be appreciated by those skilled in the art that when the file box is folded into a three-dimensional configuration, the relationship of "in a first direction" or "in a second direction" in its planar state will no longer be satisfied due to the change in angle between the faces. However, such folding and unfolding variations do not affect the actual structure of the file box, and those skilled in the art will understand the structure of the file box defined in the above description based on the state of the file box.

Specifically, the file box can be made of paper materials such as cardboard or acid-free paper, and can also be made of plastic materials such as foaming polypropylene. The lid 1, the back 3, the first wall 2, the second wall 4, the third wall 6, the fourth wall 7, the first side panel 5, the second side panel 8 and the third side panel 9 may actually be of one-piece construction, connected to each other by crease lines.

In order to realize fixation of the file box after being folded into a three-dimensional structure, referring to fig. 1 and 2, a first slot 81 and a second slot 82 are arranged on a second side plate 8 of the file box, and the first slot 81 and the second slot 82 are perpendicular to a first direction; the side of the first side plate 5 facing away from the second box wall 4 is provided with a first inserting piece 51 for being matched with the first inserting groove 81, and the first inserting piece 51 extends towards the direction away from the second box wall 4; the first side plate 5 is also provided with a second inserting sheet 52 which is matched with the second inserting slot 82, and the second inserting sheet 52 extends towards the direction approaching the second box wall 4; as shown in fig. 3, the length of the first insert sheet 51 in the first direction is smaller than the length of the second insert sheet 52 in the first direction.

Referring to fig. 4 to 8, after the file box of the present disclosure is folded into a three-dimensional structure, the first insert sheet 51 on the first side plate 5 may be inserted into the first slot 81, the second insert sheet 52 on the first side plate 5 may be inserted into the second slot 82, and the first slot 81 and the second slot 82 limit the first insert sheet 51 and the second insert sheet 52, so that the relative positions of the first side plate 5 and the second side plate 8 are fixed, and the three-dimensional structure of the file box is reinforced. Because the extending directions of the first inserting piece 51 and the second inserting piece 52 are opposite, after the first inserting piece 51 and the second inserting piece 82 are respectively inserted into the first inserting groove 81 and the second inserting groove 82, when the first side plate 5 is impacted on two lateral directions and the relative position of the second side plate 8 is shifted, the first side plate and the second side plate can be limited in two directions, and the first side plate and the second side plate are not easy to separate from the first inserting groove 81 and the second inserting groove 82.

When the file box is folded into a three-dimensional structure and put into use, referring to fig. 4, the second slot 82 is closer to the outside of the file box than the first slot 81, the first tab 51 extends toward the inside of the file box, and the second tab 52 extends toward the outside of the file box. The inventor finds that the stress at the matching position of the second insert 52 and the second slot 82 is higher through observation and stress analysis, and in use, the second insert 52 is easy to be separated from the second slot 82, so that the file box is deformed and scattered. Therefore, the length of the first insert piece 51 of the file box of the present disclosure is smaller than the length of the second insert piece 52, so as to improve the connection firmness of the second insert piece 52 and the second slot 82.

Further, in some exemplary embodiments of the present disclosure, the third side plate 9 is provided with the same structure as the first slot 81 and the second slot 82 on the second side plate 8, and the corresponding position of the first side plate 5 is also provided with the same structure as the first tab 51 and the second tab 52. That is, the third side plate 9 is provided with a third slot 91 and a fourth slot 92, one side of the first side plate 5 away from the second box wall 4 is also provided with a third inserting sheet 53 for matching with the third slot 91, and the third inserting sheet 53 extends towards a direction away from the second box wall 4; the first side plate 5 is further provided with a fourth insert piece 54 for being matched with the fourth insert slot 92, and the fourth insert piece 54 extends towards the direction approaching the second box wall 4. The third slot 91 and the fourth slot 92 may have the same structure as the first slot 81 and the second slot 82, for example, the third slot 91 and the first slot 81 are symmetrical about an axis of symmetry parallel to the first direction, and the fourth slot 92 and the second slot 82 are symmetrical about an axis of symmetry parallel to the first direction. The length of the third tab 53 in the first direction is less than the length of the fourth tab 54 in the first direction.

The box cover 1 covers the first side plate 5, and in some exemplary embodiments, connecting components such as a velcro or a sticking buckle are further disposed at positions of the box cover 1 corresponding to the first side plate 5, so that the box cover 1 can be adhered to the first side plate 5, the file box can be closed, or the box cover 1 and the first side plate 5 are separated from each other, and the file box can be opened.

After the file box disclosed by the utility model is folded into the three-dimensional structure, the third inserting sheet 53 on the first side plate 5 can be inserted into the third inserting slot 91, and the fourth inserting sheet 54 on the first side plate 5 can be inserted into the fourth inserting slot 92, so that the relative positions of the first side plate 5 and the third side plate 9 are fixed, and the three-dimensional structure of the file box is further reinforced.

In one exemplary embodiment of the present disclosure, the first tab 51 is connected with the first side panel 5 fold and the second tab 52 is connected with the first side panel 5 fold. Specifically, referring to fig. 3 and 4, the first side plate 5 is provided with a first insert piece 51, the first insert piece 51 may be integrally formed in a semicircular shape protruding towards a direction away from the second box wall 4, the first insert piece 51 may be integrally formed with the first side plate 5 and connected with the first side plate 5 through a crease line, a maximum value of a width of the first insert piece 51 is at the crease line connected with the first side plate 5, the first insert piece 51 gradually contracts in a circular arc shape from a root to an end, so that the end is facilitated to enter the first slot 81 when the file box is folded, and the root is more tightly matched with the first slot 81. The first side plate 5 is provided with a second inserting sheet 52, one side of the second inserting sheet 52 is adhered to the first side plate 5, and the second inserting sheet 52 can rotate around the side relative to the first side plate 5; the second insert 52 may be a part of the first side plate 5, where the second insert 52 is connected to the first side plate 5 only by a crease line, and the other parts are separated from each other, that is, the first side plate 5 is provided with a missing part at a corresponding position of the second insert 52, and when the second insert 52 is parallel to the second side plate 8, the second insert 52 is located inside the missing part.

The second insert 52 may be triangular in shape as a whole, and as shown in fig. 3 and 4, the base of the triangle is the maximum value of the width of the second insert 52 in the second direction, and the height of the triangle is the length of the second insert 52 in the first direction. Further, the second tab 52 may be isosceles triangle in its entirety. In an exemplary embodiment, the maximum value of the width of the first tab 51 in the second direction is equal to the maximum value of the width of the second tab 52 in the second direction, and the maximum value of the width of the second tab 52 in the second direction is located at the junction of the second tab 52 and the first side panel 5. The triangular second tab 52 may have two straight sides to further facilitate entry into the second slot 82. In some exemplary embodiments, the second tab 52 may be rounded in shape overall, e.g., the top corner of the second tab 52 proximate to the second box wall 4 is rounded, and is not prone to scratching the user when the second tab 52 is pushed into the second slot 82.

In one exemplary embodiment of the present disclosure, the second tab 52 is provided with scores 521 in the second direction at opposite ends of the crease of the first side panel 5. Referring to fig. 3, the score 521 is provided at the root of the second tab 52 such that the width of the second tab 52 at the crease of the first side panel 5 in the second direction is smaller than the maximum value of the width of the second tab 52 in the second direction. After the second insert 52 is inserted into the second slot 82, the second insert 52 and the first side plate 5 are respectively located at two opposite sides of the second side plate 8, and the score 521 can make the relative rotation between the second insert 52 and the first side plate 5 more convenient, so that the second insert 52 is beneficial to being completely inserted into the second slot 82, and the connection between the second insert 52 and the second slot 82 is firmer. The direction of the score 521 may be parallel to the direction of the crease line or may be at an angle.

Further, in an exemplary embodiment of the present disclosure, opposite ends of the second slot 82 in the second direction are respectively provided with reinforcing grooves inclined toward a direction approaching the first slot 81. The direction of the reinforcement groove can form an obtuse angle with the direction of the second slot 82, when the second insert 52 is inserted into the second slot 82, the extension direction of the reinforcement groove faces the root of the second insert 52, which is beneficial to clamping the root of the second insert 52, meanwhile, the reinforcement groove can be matched with the notch 521, the inclined edge of the reinforcement groove is contacted with the notch 521, and the connection and the matching of the second insert 52 and the second slot 82 are further reinforced.

The first slot 81 and the second slot 82 may be machined by removing materials, and referring to fig. 7, in an exemplary embodiment of the present disclosure, the widths of the first slot 81 and the second slot 82 in the first direction are each 2mm to 4mm. In the related art, similar to the clamping structure of the first slot 81 and the second slot 82, the slots are usually through scratches with negligible width. In some exemplary embodiments of the present disclosure, the widths of the first slot 81 and the second slot 82 are greater than or equal to 2mm and less than or equal to 4mm, so that after the first insert sheet 51 is inserted into the first slot 81 and the second insert sheet 52 is inserted into the second slot 82, the overall thickness of the width positions of the first slot 81 and the second slot 82 is smaller, and the solid materials are less, which is favorable for inhibiting the first insert sheet 51 and the second insert sheet 52 from being separated. Preferably, the width of the first slot 81 and the second slot 82 is 3mm, which not only can play the effect of the firm connection, but also can not cause too small friction force between the first insert sheet 51 and the second insert sheet 52 due to the reduced contact area between the two side plates 8.

In an exemplary embodiment of the present disclosure, a side of the box cover 1 is further provided with a logo area, and when the stereoscopic file box is formed by folding, the side where the logo area is located is a cover of the file box. For example, the identification area may be a paper label adhered to one side of the box cover 1, or the identification area may be a transparent plastic bag with one side open, and the label marked with information such as the subject, content and the like of the stored file in the file box may be plugged into the transparent plastic bag.

In an exemplary embodiment of the present disclosure, referring to fig. 8, a push-pull hole 21 is further provided on the first case wall 2, and an index pocket is provided on one side of the first case wall 2, the index pocket covering the push-pull hole 21. When the stereoscopic file box is formed by folding, one side where the index bag is located at the outer side of the file box, and the index bag can be used for storing an index card with index information of the stored file in the file box. The push-pull hole 21 penetrates through the first box wall 2, so that when the index card needs to be replaced, the index card in the index bag can be conveniently pushed out of the index bag or the index card which does not enter the index bag completely can be pushed into the index bag through the push-pull hole 21 on the side, opposite to the side where the index bag is located, of the first box wall 2, namely, the side which is located inside the file box after being folded. The push-pull hole 21 may be in the shape of a kidney-shaped hole.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any adaptations, uses, or adaptations of the disclosure following the general principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (10)

1. A file box, comprising:

the box cover, the first box wall, the box back, the second box wall and the first side plate are sequentially connected in a crease manner along the first direction;

a third box wall and a fourth box wall respectively connected to opposite sides of the box back in a second direction by folds, wherein the first direction is perpendicular to the second direction; the method comprises the steps of,

a second side panel having a fold connected to a side of the third box wall opposite the box back;

a third side panel having a fold connected to a side of the fourth box wall opposite the box back; wherein,

a first slot and a second slot are arranged on the second side plate, and the first slot and the second slot are perpendicular to the first direction;

a first inserting sheet matched with the first inserting groove is arranged on one side, away from the second box wall, of the first side plate, and extends towards a direction away from the second box wall; the first side plate is also provided with a second inserting sheet which is matched with the second inserting slot, and the second inserting sheet extends towards the direction close to the second box wall;

the length of the first inserting sheet in the first direction is smaller than that of the second inserting sheet in the first direction.

2. A file box as in claim 1, wherein,

the first inserting sheet is connected with the first side plate crease, and the second inserting sheet is connected with the first side plate crease;

the maximum value of the width of the first inserting sheet in the second direction is equal to the maximum value of the width of the second inserting sheet in the second direction.

3. A file box as in claim 2, wherein,

the first inserting sheet is integrally semicircular and protrudes towards the direction away from the second box wall;

the whole second inserting piece is triangular with the maximum value of the width of the second inserting piece in the second direction as the bottom and the length of the second inserting piece in the first direction as the height.

4. A file box as in claim 3, wherein,

the apex angle of the second inserting piece, which is close to the second box wall, is a round angle.

5. A file box as in claim 3, wherein,

the first side plate is provided with a missing part at the corresponding position of the second inserting sheet, and the second inserting sheet is positioned in the missing part when the second inserting sheet is parallel to the second side plate.

6. A file box as in claim 5, wherein,

and scores along the second direction are arranged at the two opposite ends of the crease positions of the second inserting sheet and the first side plate, so that the width of the crease positions of the second inserting sheet and the first side plate in the second direction is smaller than the maximum value of the width of the second inserting sheet in the second direction.

7. A file box as in claim 6, wherein,

the opposite ends of the second slot along the second direction are respectively provided with a reinforcing groove which inclines towards the direction close to the first slot.

8. A file box as in claim 1, wherein,

the width of the first slot and the second slot in the first direction is 2 mm-4 mm.

9. A file box as in claim 1, wherein,

the third side plate is provided with a third slot and a fourth slot, the third slot and the first slot are symmetrical about a symmetry axis parallel to the first direction, and the fourth slot and the second slot are symmetrical about a symmetry axis parallel to the first direction;

a third inserting sheet matched with the third inserting groove is further arranged on one side, away from the second box wall, of the first side plate, and extends towards the direction away from the second box wall; a fourth inserting sheet matched with the fourth inserting groove is further arranged on the first side plate, and extends towards the direction close to the second box wall;

the length of the third inserting sheet in the first direction is smaller than that of the fourth inserting sheet in the first direction.

10. The file box according to any one of claims 1 to 9, characterized in that,

the first box wall is provided with a push-pull hole, one surface of the first box wall is provided with an index bag, and the index bag covers the push-pull hole.