JP2008037428A - Lid locking structure for container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a container designed so that a lid placed over the opening part of a container body is securely engaged to prevent the container from being opened after sealed. <P>SOLUTION: The lid 21 has a first vertical wall piece 23A and a second vertical wall piece 23C extending down from the peripheral edges of a top plate 22, a folding piece 24A formed by folding the lower end of the first vertical wall piece 23A along the internal side face of the first vertical wall piece 23A, and a folding piece 26 extending from one side end of the second vertical wall piece 23C and superposed on the folding piece 24A by being interposed between the first vertical wall piece 23A and the folding piece 24A such that the height of the upper edge part of the folding piece 26 is the same as that of the upper edge part of the folding piece 24A. This lid 21 is placed over the container body 11 from above the opening part 12 such that the upper edges of the folding pieces 24A and 26 are disposed below the lower edge part of a tongue piece 15 extending downward from the peripheral edge of the opening part 12. Thus, the lid 21 is locked on the container body 11. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a container lid locking structure that is sealed by covering a container body having an opening with a cover.

  Traditionally, recycling activities have been carried out to collect used documents and recycle them into paper products. For example, important documents containing personal information, company trade secrets, etc. are collected and processed. Since the information content may leak in the process of, it was not put out for recycling and was incinerated as ordinary burning garbage.

  However, due to the growing concern about environmental issues in recent years, there is a demand for important documents to be recycled as resource waste, and in the process from collection to processing, paper products are kept in a strictly maintained state. Recycling activities for important documents to be recycled are also being carried out.

  In such recycling of important documents, for example, used important documents are successively accommodated in a cardboard box for collecting important documents, and the cardboard box is sealed when it is full. Then, the cardboard box is collected by a specialized collection company or the like, transported to a recycling factory, put into a melting furnace in a sealed state in the recycling factory, melted, and recycled as a paper product.

  This cardboard box is used for general packaging, and the sealing operation is performed by folding a plurality of folding pieces at the top of the box, overlapping each other, and fixing with an adhesive tape.

  Further, conventionally, containers that are sealed without using an adhesive tape, for example, by providing locking pieces on the opening edge and the lid of the container main body, and covering the container main body with the lids to lock the locking pieces together. Various containers and the like for sealing have been proposed.

  FIG. 12 is a diagram for explaining the prior art. For example, as shown in FIG. 12, the assembly box 100 includes a body box 101 and a lid box 111, and the body box 101 stands up from each side of the rectangular bottom 102 and is connected to each other. Of the side wall portions 103, 104, 105, and 106, a body box side locking portion 107 is formed by being cut and raised on the outer surface of a pair of opposing side wall portions 103 and 105. The body box side locking portion 107 is inclined so as to open outward as it moves downward from the upper ends of the side wall portions 103 and 105.

  On the other hand, the lid box 111 is opposed to one of the four side wall portions 113, 114, 115, 116 that are suspended from each side portion of the rectangular top plate portion 112 that is slightly larger than the bottom portion 102 and connected to each other. A lid box side latching portion 117 is cut and raised on the inner surface of the pair of side wall portions 113 and 115 corresponding to the body box side latching portion 107. The lid box side locking portion 117 is inclined so as to open inward as it moves upward from the substantially central height position of the side wall portions 113 and 115.

  When the lid box 111 is covered from above the body box 101, the outer side surfaces of the side wall parts 103, 104, 105, 106 of the body box 101 and the inner side surfaces of the side wall parts 113, 114, 115, 116 of the lid box 111 are vertically The body box side latching portion 107 and the lid box side latching portion 117 are arranged at positions that are spaced apart from each other and face each other.

  The body box side locking portion 107 cut and raised on the outer side surfaces of the side wall portions 103 and 105 is attached to the inner side surfaces of the side wall portions 113 and 115 of the lid box 111 at a predetermined position above the lid box side locking portion 117. Press with force. The lid box side locking part 117 cut and raised on the inner side surfaces of the side wall parts 113 and 115 is located below the side wall parts 103 and 105 of the body box 101 at a position lower than the body box side locking part 107. Pressing with the urging force of.

  In this state, when the lid box 111 is lifted, the lid box 111 moves upward with respect to the body box 101, and the body box side locking portion 107 and the lid box side locking portion 117 are engaged with each other up and down. The lid box 111 and the body box 101 are prevented from being separated (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. Sho 62-125720

  However, in the case of the cardboard box, it can be easily opened by removing the adhesive tape, and the contents of important documents may be leaked in the process from collection to recycling.

  Further, when the assembly box 100 is used for collecting important documents, the body box side locking portion 107 and the lid box side locking portion 117 are the side wall portions 103 and 105 of the body box 101 and the side wall portion of the lid box 111. 113, 115 is formed by cutting and raising the body box 101 so that the body box side locking part 107 follows the side wall parts 103, 105 by the side wall parts 113, 115 when the cover box 111 is put on the body box 101. The lid box side locking portion 117 is pushed by the side wall portions 103 and 105 so as to follow the side wall portions 113 and 115 and enters into the cutout hole of the cut and raised, and the body box side locking portion 107 and There is a possibility that the lid box side locking portion 117 cannot be engaged.

  In the case of cutting and raising, the lid box side locking portion 117 presses the inner surface of the side wall portions 103 and 105 of the body box 101, and the body box side locking portion 107 is the side wall portion 113 of the lid box 111. The pressing force that presses the inner surface of 115 has to depend on the rigidity of the members constituting the assembly box 100. For example, when the assembly box 100 is made of paper, there is a concern that the pressing force decreases with time. Then, when the body box 101 is lifted, the body box side locking portion 107 and the lid box side locking portion 117 may not be engaged.

  Accordingly, the engagement between the body box side locking portion 107 and the lid box side locking portion 117 is uncertain, and when the lid box 111 is lifted upward with respect to the body box 101, The lid box side latching portion 117 is not engaged, and the assembly box 100 is opened, and the contents of the important document may be leaked.

  In general, the cut-and-raise has a low locking strength. When a heavy object such as a document is put into the assembly box 100 and the lid box 111 is lifted, the body box side locking portion 107 and the lid box side locking portion 117 are moved. There is a risk of breakage, it can be easily opened and the contents of important documents can be leaked.

  The present invention has been made in view of these points, and an object of the present invention is to provide a container that can securely engage a lid over an opening of a container body with the container body and prevent opening after sealing. There is to do.

  The container lid locking structure according to claim 1 of the present invention that solves the above-described problems includes a cylindrical body, an opening that opens one end of the body, and the periphery of the opening. In a container lid locking structure that is sealed by covering a container body that has a tongue piece that is folded outward and extends toward the other end side of the body part, the lid covers the opening. A first vertical wall piece that is bent at the periphery of the top plate and hangs down, and a second vertical wall piece that is bent at the periphery of the top plate and at a side position of the first vertical wall plate and hangs down And is folded back along the inner surface of the first vertical wall piece at the lower end portion of the first vertical wall piece and extends toward the top plate, and the extended upper end portion is a tongue piece between the top plate and the top plate. A folded piece that is spaced apart with a longer interval than the extended length of the first vertical wall piece, and is interposed between the first vertical wall piece and the folded piece extending from the side end of the second vertical wall piece. And second Connected to the wall piece, has a folded piece that overlaps with the folded piece and has the upper end continuous at the same height position as the upper end of the folded piece, and covers the container body from the one end side of the trunk part Thus, the first vertical wall piece and the second vertical wall piece are opposed to the outer side surface of the body portion, and the tongue piece is interposed between the folded piece and the folded piece and the top plate, and the upper end portion and the folded piece of the folded piece. The lower end portion of the tongue piece is opposed to the upper end portion of the piece.

  According to a second aspect of the present invention, in the container lid locking structure according to the first aspect, the second vertical wall piece extends from the side end of the second vertical wall piece and the first vertical wall piece and the folded piece. Between the first vertical wall piece and the second vertical wall piece, and is folded back along the inner surface of the second vertical wall piece at the lower end of the second vertical wall piece. And a second folded piece spaced from the top plate with a longer interval than the extension length of the tongue piece. The second folded piece is connected to the side end of the second folded piece.

  According to a third aspect of the present invention, in the container lid locking structure according to the first or second aspect, the container main body has a corrugated core interposed between the front paper and the back paper. It is comprised by the paperboard produced by bonding together, and it is used so that the core of paperboard may extend from the upper end part of a folding piece to a lower end part.

  According to the present invention, by covering the container body from above the opening, the first vertical wall piece and the second vertical wall piece of the lid are opposed to the outer surface of the body part of the container body, and the folded piece and the folded piece Since the tongue piece is interposed between the top plate and the top plate, the lower end portion of the tongue piece can be opposed to the upper end portion of the folded piece and the folded piece that are continuous with each other. When moved in the removing direction, at least one of the upper end portion of the folded piece and the upper end portion of the folded piece can be brought into contact with the lower end portion of the tongue piece from below to lock the lid.

  In particular, the folded piece and the upper end portion of the folded piece that are opposed to each other below the lower end portion of the tongue piece have a thickness equivalent to two pieces of the folded piece and the folded piece. Can be reliably brought into contact with at least one of the upper end of the folded piece and the upper end of the folded piece, and the lid can be firmly locked to the container body. Therefore, it is possible to prevent the lid from being removed from the container body, and to reliably maintain the sealed state of the container.

  Moreover, since the 2nd vertical wall piece is connected with the 1st vertical wall piece by interposing a folding piece between the 1st vertical wall piece and the folding piece, use an adhesive tape, an adhesive agent, etc. The first vertical wall piece and the second vertical wall piece can be connected with high connection strength. Accordingly, it is possible to make the act of destroying the lid difficult and prevent the lid from being destroyed and the container from being opened.

  Next, embodiments of the present invention will be described with reference to the drawings. FIG. 11 is a diagram illustrating the configuration of the collection apparatus 1 that collects used important documents.

  The collection device 1 is installed, for example, in each department in the company or on each floor in order to collect and collect used important documents. Here, the important document refers to a paper document in which leakage to the outside is prohibited and information that is strictly managed is described, such as personal information and trade secrets.

  The collection apparatus 1 has a housing 2 that accommodates a container 10 to which the present invention is applied, and a loading port 3 with a shutter is provided on the top of the housing 2. The mailing slot 3 is always closed by a shutter, and the shutter opens only when an authentication medium such as a magnetic card or an IC card is inserted into the slot 4 near the mailing slot and authentication is confirmed by a predetermined authentication process. Documents can be posted, and the shutter is closed by removing the authentication medium. In addition, a receipt issuing means (not shown) for issuing a receipt on which a receipt number, a dissolution certificate issuing number, and the like are issued after the document is posted is provided in the vicinity of the posting port 3.

  A container 10 including a lid 21 shown in FIG. 1 and a container main body 11 shown in FIG. 2 is accommodated in the housing 2 with the opening 12 of the container main body 11 opened. The printed document passes through the opening 12 and is put into the container main body 11. Then, when the document placed in the container main body 11 is transported to the recycling factory, the front door 2a of the housing 2 is opened and the container 10 is taken out from the housing 2 to take out the container 10 in the housing 2. The lid 21 is automatically placed over the opening 12 of the container body 11 and sealed.

  When the container 10 is taken out from the housing 2, it is transported to a recycling factory by a specialized collection company, etc., and the container 10 is put into the melting furnace of the recycling factory with the documents stored, and is recycled to a paper product. It has come to be.

  Next, the structure of the container 10 is demonstrated below based on FIGS. 1 is an overall perspective view of the lid 21, FIG. 2 is an overall perspective view of the container body 11, FIG. 3 is an exploded view of the lid 21, and FIGS. 4 to 9 are diagrams for explaining the assembly sequence of the lid 21. FIG. 10 is a cross-sectional view illustrating a state in which the lid 21 is locked to the container body 11.

  The container 10 includes a container main body 11 and a lid 21, and the container main body 11 and the lid 21 are made of a paper material. As the paper material, in this embodiment, a corrugated core (flute) is interposed between the front paper (liner) and the back paper (liner), and the paperboard is made by bonding with an adhesive, So-called corrugated cardboard is used, and more specifically, corrugated cardboard having an A-stage standard having a corrugated step height of 4.5 to 4.8 mm is used.

  As shown in FIG. 2, the container body 11 has a cylindrical body portion 13 in which an upper portion that is one end portion is opened and a lower portion that is the other end portion is closed by a bottom plate 14. The body portion 13 is formed by connecting four rectangular side plates 13A, 13B, 13C, and 13D with side plates adjacent to each other, and extends over the side plates 13A, 13B, 13C, and 13D. Corrugated paper is used so that the core extends. The bottom plate 14 is formed by combining a plurality of folding pieces (not shown) connected to the lower ends of the side plates 13A, 13B, 13C, and 13D via folding lines, respectively. It has a rectangle that is slightly larger than the documents that will be posted on.

  In the upper part of the container body 11, an opening 12 is formed by the upper end portions of the side plates 13A, 13B, 13C, 13D. The peripheral edge of the opening 12 extends in parallel with each side of the bottom plate 14, and among the four side plates 13 </ b> A, 13 </ b> B, 13 </ b> C, 13 </ b> D, the upper end of the front side plate 13 </ b> C The side plates 13A, 13B, and 13D are formed so as to be positioned at a height that is one step lower than the upper ends of the side plates 13A, 13B, and 13D.

  A tongue piece 15 for locking the lid 21 is provided on the periphery of the opening 12. The tongue piece 15 is connected to the upper ends of the left and right and rear side plates A, 13B, and 13D excluding the front side plate 13C. The tongue piece 15 is formed by being folded outward at the upper end of each side plate A, 13B, 13D, extends downward along the outside of each side plate A, 13B, 13D, and is adjacent to each other. The tongue pieces 15 are connected to each other. In the tongue piece 15, the core of the cardboard paper extends vertically. And the upper end part of 13 C of front side plates is formed so that it may be located in the substantially same height position as the lower end part of the tongue piece 15. FIG.

  The container main body 11 having the above-described configuration is formed by combining the plurality of folding pieces (not shown) constituting the bottom plate 14 by opening the body 13 from a state of being crushed and folded into a flat plate shape. 2 can be assembled into a box shape shown in FIG.

  The lid 21 is configured to cover the opening 12 of the container body 11 to close the opening 12 and to be firmly locked to the container body 11.

  As shown in FIG. 1, the lid 21 has a rectangular top plate 22 and a solid body provided with a rim 23 that hangs from the periphery of the top plate 22 and borders the top plate 22. It has a shape. As shown in FIG. 3, the lid 21 is made of a piece of corrugated paper, and can be assembled into the three-dimensional shape shown in FIG. 1 by being bent along a plurality of folding lines.

  The top plate 22 has a size that covers the opening, specifically, a rectangular shape that is slightly larger than the bottom plate 14 of the container body 11, and the short side is at the upper end of the front and rear side plates 13 </ b> C and 13 </ b> D. The long side is formed in a length corresponding to the upper ends of the left and right side plates 13A, 13B. And the core of corrugated paper is used so that it may extend in parallel with a long side.

  The edge 23 faces the outer surface of the side plates 13A, 13B, 13C, and 13D while covering the opening 12 of the container body 11, and surrounds the upper portion of the body 13 from the outer peripheral side, and the lower end of the tongue piece 15 It has a certain height extending from the lower end portion toward the lower portion of the body portion 13 and includes four vertical wall pieces 23A, 23B, 23C, and 23D as shown in FIG. .

  These four vertical wall pieces 23A, 23B, 23C, and 23D are composed of two types of first vertical wall pieces 23A and 23B and second vertical wall pieces 23C and 23D. As shown in FIG. It is provided in the position which opposes on both sides, and has comprised each. Specifically, the pair of first vertical wall pieces 23 </ b> A and 23 </ b> B are connected to each other through a folding line between the long side of the top plate 22, and the pair of second vertical wall pieces 23 </ b> C and 23 </ b> D are connected to the top plate 22. It is connected to the short side via a folding line.

  And the 1st folding | returning piece (folding piece) 24A, 24B is connected with 1st vertical wall piece 23A, 23B, respectively. The first folded pieces 24A and 24B are connected to the lower ends of the first vertical wall pieces 23A and 23B via folding lines, respectively, and along the inner side surfaces of the first vertical wall pieces 23A and 23B. The distance L (L> h) is longer than the extended length h of the tongue piece 15 between the upper end portions of the first folded pieces 24A and 24B and the top plate 22. ) To be spaced apart from each other (see FIG. 10).

  On the other hand, the connecting piece 25 and the second folded pieces 24C, 24D are connected to the second vertical wall pieces 23C, 23D. The connecting piece 25 is connected to both end portions of the second vertical wall pieces 23C and 23D via folding lines. The connecting piece 25 is for connecting the second vertical wall pieces 23C and 23D to the first vertical wall pieces 23A and 23B adjacent to the both side ends of the second vertical wall pieces 23C and 23D, respectively. Folded between the vertical wall pieces 23A and 23B and the first folded pieces 24A and 24B, the inner wall faces the first vertical wall pieces 23A and 23B so as to be in contact from the upper end to the lower end.

  The second folded piece 24C is connected to the lower ends of the second vertical wall pieces 23C and 23D via a folding line, and is folded back along the inner surface of the second vertical wall pieces 23C and 23D. The upper end of the second folded pieces 24C, 24D is set to a height width that forms an interval L longer than the protruding length h of the tongue piece 15 between the upper end portions of the second folded pieces 24C, 24D. It is formed to be located at the same height position as the upper ends of the first folded pieces 24A, 24B and to be continuous.

  And the folding piece 26 is provided in the 2nd folding | turning pieces 24C and 24D. The folding pieces 26 are connected to both end portions of the second folded pieces 24C and 24D via folding lines, respectively. The folding piece 26 is folded and interposed with the connecting piece 25 between the first vertical wall piece 23A and the first folded piece 24A and between the first vertical wall piece 23B and the first folded piece 24B. . The upper end portion is continuous to the same height as the upper end portions of the first folded pieces 24A and 24B, and a gap L longer than the protruding width h of the tongue piece 15 is provided between the upper end portion of the folding piece 26 and the top plate 22. It is configured to form.

  Cutout portions 27 are provided at both ends of the second folded pieces 24C and 24D. The cutout portion 27 is formed by cutting out from the upper end along a folding line with the folding piece 26 over a predetermined height, and the insertion pieces 28 projecting from both side ends of the first folding pieces 24A, 24B. The lid 21 can be fixed in the assembled state.

  In the first vertical wall pieces 23A and 23B and the first folded pieces 24A and 24B, the core of the corrugated cardboard extends in parallel with the top plate 22, and the second vertical wall pieces 23C and 23D and the second folded piece 24C. , 24D, the connecting piece 25, and the folding piece 26, the core of the corrugated paper extends along the direction orthogonal to the top plate 22.

  A method for assembling the lid 21 having the above configuration will be described below.

  First, from the unfolded state shown in FIG. 3, the second vertical wall pieces 23C and 23D are bent to the lower surface side of the top plate 22 along the folding line with the top plate 22 and suspended from the top plate 22 (for example, FIG. 4).

  Next, the connecting piece 25 is folded to the top plate 22 side with a folding line with the second vertical wall pieces 23C and 23B, and each folding piece 26 is connected with the connecting piece 25 with a folding line with the second folded pieces 24C and 24D. Bend to the side that separates (see, eg, FIG. 5).

  Then, each of the second folded pieces 24C, 24D is folded inward along a folding line with each of the second vertical wall pieces 23C, 23D, and along each inner side surface of each of the second vertical wall pieces 23C, 23D, The folding piece 26 is overlapped on the inner surface of each connecting piece 25 (see, for example, FIG. 6).

  Then, the first vertical wall pieces 23A and 23B are folded to the lower surface side of the top plate 22 along the folding line with the top plate 22, and are suspended from the top plate 22 so as to overlap the outer surface of the connecting piece 25 ( For example, see FIG. Then, the first folded pieces 24A and 24B are folded inward along the folding lines with the first vertical wall pieces 23A and 23B, and the first vertical wall piece is interposed between the first vertical wall piece 23A and the first folded piece 24A. The connecting piece 25 and the folded piece 26 are interposed between the 23B and the first folded piece 24B (see, for example, FIG. 8). And the insertion piece 28 of the both ends of the 1st folding | turning piece 24A, 24B is inserted in the notch part 27, and is fixed to this folding-back state.

  Through the above operation, the lid 21 is assembled in the state shown in FIG. 1 and can be easily and quickly assembled without using an adhesive tape or an adhesive. The folded pieces 26 overlap with the folded pieces 24A and 24B, respectively, and the upper end portions of the folded pieces 26 are continuously arranged at the same height as the upper end portions of the first folded pieces 24A and 24B. A gap having a height width L longer than the protruding width h of the piece 15 and a thickness width D of two corrugated paper sheets is formed (see, for example, FIG. 10).

  When the lid 21 having the above configuration is placed on the container body 11 from above the opening 12, the outer side surfaces of the left and right side plates 13A and 13B of the container body 11 and the inner side surfaces of the first vertical wall pieces 23A and 23B of the lid 21 Are opposed to each other, and the outer surfaces of the side plates 13C and 13D before and after the container body 11 are opposed to the inner surfaces of the second vertical wall pieces 23C and 23D of the lid 21, and the first folded pieces 24A and 24B of the lid 21 are opposed to each other. And the 2nd folding | turning piece 24D and each tongue piece 15 of side plate 13A, 13B, 13C move relatively up and down, slidingly.

  Then, the lower end portion of the tongue piece 15 of the side plates 13A, 13B moves above the upper end portion of the first folded pieces 24A, 24B, so that the tongue piece 15 of the side plates 13A, 13B becomes the first folded piece 24A, The upper portion of the first folded pieces 24A and 24B and the upper end portion of the folded piece 26 are arranged vertically below the lower end portion of the tongue piece 15 so as to enter the gap formed above 24B.

  Further, the lower end portion of the tongue piece 15 of the side plate 13D moves above the upper end portion of the second folded piece 24D, whereby the tongue piece 15 of the side plate 13D is formed above the second folded piece 24D. The upper end portion of the second folded piece 24D is disposed below and vertically below the lower end portion of the tongue piece 15.

  Therefore, when the lid 21 is lifted in this state, the lower end portion of the tongue piece 15 provided on the rear side plate 13D is brought into contact with the upper end portion of the second folded piece 24D, and the left and right side plates 13A and 13B are brought into contact with each other. The lower end of the tongue piece 15 provided on the upper end of the first folded piece 24A, 24B and the upper end of the folded piece 26 can be brought into contact with each other.

  Here, in particular, above the first folded pieces 24A and 24B and the folded piece 26, a gap D having a thickness width corresponding to two of the tongue pieces 15 is formed over the entire length of the upper ends of the side plates 13A and 13B. Therefore, the lower end portions of the tongue pieces 15 of the side plates 13A and 13B can be reliably brought into contact with at least one of the upper end portions of the first folded pieces 24A and 24B and the upper end portions of the folded pieces 26.

  Further, for the purpose of opening the lid 21, from the lower side of the first folded pieces 23A, 23B, when inserting the tip of a fingertip or a rod-like member between the side plates 13A, 13B and the first folded pieces 24A, 24B, The tips of these fingertips and rod-like members are inserted between the tongue piece 15 and the side plates 13A and 13B.

  Therefore, in such a case, the opposing of the lower end portion of the tongue piece 15 with the upper end portions of the first folded pieces 24A and 24B and the upper end portion of the folding piece 26 cannot be released, and the lower end portion of the tongue piece 15 is not attached to the side plate. 13A, 13B and spaced apart from the first vertical wall pieces 23A, 23B, the lower end of the tongue piece 15, the upper end of the first folded piece 24A, 24B and the upper end of the folding piece 26 It will make the opposite more certain.

  Therefore, the lid 21 can be firmly locked to the container main body 11 and further upward movement of the lid 21 relative to the container main body 11 can be prevented. And it can prevent that the lid | cover 21 is removed from the container main body 11, and can maintain the sealing state of the container 10 reliably.

  Further, since the corrugated paper is used so that the core of the corrugated paper extends in the vertical direction, the tongue piece 15 and the folding piece 26 have a strong resistance against the force in the vertical direction. Therefore, even when a relatively heavy weight of, for example, about 20 kg is placed in the container body 11 and the lid 21 is closed and the lid 21 is lifted, the container 10 can be fully withstood, and the entire container 10 is not broken. Can be lifted up.

  Moreover, in the said embodiment, the 1st vertical wall piece which mutually adjoins by interposing the connection piece 25 and the folding piece 26 between 1st vertical wall piece 23A, 23B and 1st folding | turning piece 24A, 24B. Since 23A, 23B and the second vertical wall pieces 23C, 23D are connected, the first vertical wall pieces 24A, 24B and the second vertical wall pieces are high in connection strength without using an adhesive tape or an adhesive. 24C and 24D can be connected. Accordingly, it is difficult to destroy the connecting portion, and the container 10 can be prevented from being opened due to the destruction of the lid 21.

  Further, the container 10 described above is configured such that the container body 11 is folded into a flat plate shape in a non-use state, and the lid 21 is in the unfolded state shown in FIG. Therefore, the occupied space in the non-use state can be reduced, and the storage space can be easily secured. Moreover, it is not necessary to use an adhesive tape or an adhesive for assembling the container main body 11 and the lid 21, and it can be assembled easily and quickly.

  The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention. For example, in the above-described embodiment, the tongue piece 15 is not provided on the front side plate 13C, but the tongue piece 15 may be provided on the front side plate 13C in the same manner as the rear side plate 13D.

  By adopting such a configuration, when the lid 21 is covered, the lower end portion of the tongue piece 15 provided on the front side plate 13C and the upper end portion of the second folded piece 24C are vertically opposed to each other. They can be brought into contact with each other when lifted. Therefore, the lid 21 can be more firmly locked, and the sealed state of the container 11 can be more reliably maintained.

  In the above-described embodiment, the case where the lid 21 and the container body 11 are completely separated has been described as an example. However, the container body 11 and the lid 21 are connected via a hinge portion. May be. For example, the side plate 13C in front of the container main body 11 and the second vertical wall piece 24C of the lid 21 are connected to each other with a folding line in between, and the folding curve is used as a hinge portion for the lid 21. , The upper end of the first folded pieces 24A and 24B, the upper end of the folded piece 26, and the lower end of the tongue piece 15 are vertically opposed to cover the opening 12, and the lid It is good also as a structure which 21 is latched.

It is a whole perspective view of a lid. It is the whole container main body perspective view. It is an expanded view of a lid | cover. It is a principal part enlarged view for demonstrating the assembly order of a lid | cover. It is a principal part enlarged view for demonstrating the assembly order of a lid | cover. It is a principal part enlarged view for demonstrating the assembly order of a lid | cover. It is a principal part enlarged view for demonstrating the assembly order of a lid | cover. It is a principal part enlarged view for demonstrating the assembly order of a lid | cover. It is a principal part enlarged view for demonstrating the assembly order of a lid | cover. It is sectional drawing explaining the engagement state of a lid | cover and a container main body. It is a figure explaining the structure of the collection | recovery apparatus which collect | recovers used important documents. It is a figure explaining a prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Collection | recovery apparatus 10 Container 11 Container main body 12 Opening part 13 Body parts 13A, 13B, 13C, 13D Side board 14 Bottom board 15 Tongue piece 21 Lid 22 Top plate 23 Edge part 23A, 23B 1st vertical wall piece 23C, 23D 2nd Vertical wall pieces 24A, 24B First folded piece (folded piece)
24C, 24D Second folding piece 25 Connecting piece 26 Folding piece 27 Notch 28 Inserting piece

Claims (3)

A cylindrical body, an opening that opens one end of the body, and a periphery of the opening that is folded back to the outside of the body and extends toward the other end of the body. In the lid locking structure of the container sealed by covering the container main body having the tongue piece,
The lid is
A top plate sized to cover the opening;
A first vertical wall piece that is bent at the periphery of the top plate and hangs down;
A second vertical wall piece that is bent at the periphery of the top plate and at a lateral position of the first vertical wall plate,
The lower end portion of the first vertical wall piece is folded back along the inner surface of the first vertical wall piece and extends toward the top plate, and the extended upper end portion is the upper end portion and the top plate. A folded piece spaced apart with a longer interval than the extension length of the tongue piece,
Extending from a side end of the second vertical wall piece and interposed between the first vertical wall piece and the folded piece to connect the first vertical wall piece and the second vertical wall piece, A folding piece that overlaps with the piece and has an upper end continuous at the same height as the upper end of the folded piece,
The first vertical wall piece and the second vertical wall piece are opposed to the outer surface of the barrel portion by covering the lid from the one end side of the barrel portion with the lid, and the folded piece and the folding portion. A container lid, wherein the tongue piece is interposed between the piece and the top plate, and the lower end portion of the tongue piece is opposed to the upper end portion of the folded piece and the upper end portion of the folded piece. Locking structure. The second vertical wall piece is
A connecting piece extending from a side end of the second vertical wall piece and interposed between the first vertical wall piece and the folded piece to connect the first vertical wall piece and the second vertical wall piece; ,
The lower end of the second vertical wall piece is folded back along the inner surface of the second vertical wall piece and extends toward the top plate, and the extended upper end portion is the upper end portion and the top plate. A second folded piece spaced apart with a longer interval than the extension length of the tongue piece,
The container lid locking structure according to claim 1, wherein the folded piece is connected to a side end of the second folded piece.   The container body is constituted by a paperboard made by interposing a corrugated core between a front paper and a back paper and pasting together with an adhesive, and the core of the paperboard is an upper end portion of the folded piece The container lid locking structure according to claim 1 or 2, wherein the container lid locking structure is used so as to extend from the bottom to the lower end.

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