JP2006076645A - Casing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a casing designed so that its closure is easy to assemble and the closed state can be retained even if a force acts on the closure. <P>SOLUTION: The casing includes a pair of opposite walls 1a and 1b with an interval between them, which are provided to define a storage space for an article, and the closure 2 for closing at least a space defined between the ends of the pair of walls 1a and 1b, the pair of walls 1a and 1b and the closure 2 being formed by folding a sheet material S. In the casing, the closure 2 extends from their ends 12a and 13, or their basal ends, of the pair of walls 1a and 1b respectively, and formed of a pair of extensions 20 and 21 so that the total of the extensions is greater than the interval between the walls 1a and 1b. The leading edges of the pair of extensions 20 and 21 are connected, the connected part is bent at the respective basal ends so that the connected part is located between the pair of walls 1a and 1b. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a case for accommodating an object to be stored, and in particular, a pair of wall portions opposed to each other with an interval in order to form an accommodation space for accommodating an object to be stored, The present invention relates to a case in which a closing portion that closes between the ends of a pair of wall portions is formed by bending a sheet material in order to prevent the contained object from falling off.

  2. Description of the Related Art Conventionally, cases formed by bending a sheet material (paper sheet, resin sheet, etc.) have various forms. For example, in order to form an accommodation space for accommodating an object to be accommodated, A pair of wall portions disposed with an interval of, and a blocking portion that closes between the end portions of the pair of wall portions to prevent the object to be stored in the storage space from falling off. There is something.

  The pair of wall portions are directly connected to each other at the side ends to form a cylindrical or flat cylindrical case body, or the side ends are indirectly connected to each other via a side wall to form a rectangular tube shape or a polygonal shape. A cylindrical case body is configured. That is, there are various types of case bodies that define the accommodation space in which the objects to be accommodated are accommodated, depending on the connection mode between the pair of wall portions.

  Along with this, there are various types of closed portions. For example, as shown in FIG. 9 (a), both ends of the pair of wall portions 100a and 100b are connected to each other to form the case main body 100. A flap 101 is extended from the lower end edge of one wall portion 100a, and the flap 101 is folded back into the case main body 100 so that the closing portion 200 is constituted by the flap 101. . The flap 101 of the case is formed such that the amount of extension from the base end is longer than the distance between the pair of wall portions 100a, 100b, and the elasticity of the folded back acts so that the tip of the flap 101 is the other wall. The lower end opening of the case body 100 (between the lower end edges of the wall portions 100a and 100b) can be closed by contacting the inner surface of the portion 100b.

  Further, as shown in FIG. 9B, both side ends of the pair of wall portions 100a and 100b are connected to form the case body 100, and the lower end edge of each of the wall portions 100a and 100b extends from the base end. In some cases, the closed portion 200 is configured by engaging the provided flaps 102a and 102b.

  One flap 102a of the pair of flaps 102a, 102b is folded back into the case body 100 at the lower end edge of one wall portion 100a serving as a base end, and the one wall portion 100a and the flap 102a A gap for inserting (engaging) the other flap is formed between them. The other flap 102b includes a folded portion 103 that extends from the lower end of the other wall portion 100b, a bottom portion 104 that extends from the distal end of the folded portion 103, and a distal end of the bottom portion 104. The engagement piece 105 extends from the base end. The bottom portion 104 is formed so that the amount of extension from the base end corresponds to the interval between the pair of wall portions 100a and 100b, and the engagement piece 105 has a length of extension from the base end. It is formed substantially the same as the amount of extension 103. In this case, the folded portion 103 is folded back into the case main body 100, and the engagement piece 105 is placed between the one flap 102a and the wall portion 100a with the bottom portion 104 folded at the base end toward the one wall portion 100a. The closed portion 200 is configured by fitting into the gap.

  By the way, in any of the above-described conventional cases (the cases shown in FIGS. 9A and 9B), when the local load is applied, the closed state of the closed portion 200 is released or the closed state is changed. There is a problem that the containment may fall off when it is released.

  That is, the closing portion 200 of the case shown in FIG. 9 (a) has a configuration in which the flap 101 is simply folded back into the case main body 100. Therefore, when an impact occurs for some reason, the flap 101 is deformed. There is a problem that the closed state of the closed portion 200 cannot be maintained because the case body 100 comes out of the case body 100.

  Further, the closed portion 200 of the case shown in FIG. 9B is configured by fitting the engagement piece 105 of the other flap 102b into the gap between the wall portion 100a and the one flap 102a. When a load or impact is applied to the other flap 102b (bottom 104), the force is applied to the one flap 102a via the engagement piece 105. As a result, the pair of flaps 102a and 102b are engaged with each other. There is a problem that the closed state of the closed part 200 cannot be maintained due to the release from the case body 100.

  Therefore, an object of the present invention is to provide a case in which the closed portion can be easily assembled and the closed state can be maintained even if a force acts on the closed portion.

  The case of the present invention has a pair of wall portions opposed to each other with a space therebetween so as to form an accommodation space for accommodating an object to be accommodated, and to prevent the object within the accommodation space from falling off. A closing portion that closes between the end portions of the pair of wall portions, wherein the pair of wall portions and the closing portion are formed by bending a sheet material. A pair of extensions that extend from the respective end edges as a base end and whose total extension amount is longer than the interval between the end edges of the wall portions that are the base ends of the respective extension portions. The pair of extending portions is formed by a protruding portion, and the distal ends thereof are connected to each other, and the connecting portion is bent at the proximal end so as to be positioned between the pair of wall portions. “Occlusion” is a concept that includes partial closing as well as complete closing (closing).

  According to the case of the above configuration, the total extension amount of the pair of extension portions constituting the closing portion is formed to be longer than the interval between the edges of the wall portion serving as the base end of each extension portion. Therefore, even if a load (force) is applied to the pair of extending portions from the accommodating space (between the wall portions) for accommodating the objects to be accommodated, the pair of extending portions are not pushed out between the wall portions, Between the end portions of the wall portion can be maintained in a closed state. That is, since the total extension amount of the pair of continuous extension portions is longer than the linear distance connecting the edges of the pair of wall portions where the extension portions are extended, the pair of extension portions is As long as an excessive force that deforms into strain does not act, the pair of extending portions are not pushed out between the wall portions, and the closed state can be maintained.

  Further, before assembling the case, the pair of extending portions extends outward from the edge of the wall portion, but the pair of wall portions and the extending portion are formed of a sheet. Therefore, only by forcibly deforming a pair of continuous extending portions and pushing them between the wall portions, a blocking portion that is not pushed out between the wall portions by the above action is formed.

  Further, even if an excessive force is applied and the pair of extending portions are pushed outward or are about to be pushed out, the pair of extending portions constituting the closing portion are continuously connected to each other. Therefore, it is possible to prevent the object from falling out between the wall portions (inside the accommodation space).

  As one aspect of the present invention, the one extending portion is formed with the amount of extension from the proximal end being substantially the same as the interval between the wall portions, and the other extending portion is extended from the proximal end. The extension amount is formed to be approximately half of the extension amount of one extension portion, and the edge of one wall portion where one extension portion is extended is extended to the other extension portion. It is also possible to adopt a configuration that is positioned on the opposite end edge side at a distance substantially equal to the extension amount of the other extension part from the end edge of the other wall part.

  In this way, with the pair of extending portions pushed into the space between the wall portions, one extending portion is substantially perpendicular to one wall portion, and the other extending portion is the other wall. As a result, the connecting portion (a bent ruled line when a bent ruled line is provided) in which a pair of extending parts are connected is located on the other wall side (wall). As long as a load or the like acts on one extension, it acts as an axial force on the other extension, and no buckling occurs on the other extension. The pair of extending portions can maintain the end portion of the wall portion in a closed state.

  That is, as long as an excessive force enough to buckle the other extension portion does not act, the blockage between the end portions of the wall portion by the blockage portion can be maintained. In addition, if the dimensions are set as described above, the first extending portion can be made substantially perpendicular to the one wall portion, so that the appearance is good and, for example, the case main body is erected. In such a case, the object can be functioned as a bottom that can be stably disposed.

  Further, as another aspect of the present invention, the closing portion further includes an auxiliary closing portion that extends from an end edge of the one wall portion as a base end and is continuously formed on both sides of the one extending portion. The auxiliary closing portion is shaped so as to be deformed following the bending of the extending portion by pushing one extending portion between the extending portions and closing the space between the extending portion and the wall portion. It may be set. If it does in this way, the substantially whole region between the edge parts of a wall part can be obstruct | occluded, and the kind of the to-be-contained object which can be accommodated increases. In other words, if almost the entire region between the end portions of the wall portion is closed, it is possible to reliably prevent the contained object from coming out between the wall portions, and to make a case that can accommodate various kinds of contained materials. Can do.

  In this case, the closing portion further includes a covering portion that extends from the edge of the other wall portion as a base end and is continuously formed on both sides of the other extending portion. In a state in which the extension portion is pushed between the wall portions, the shape is set so as to follow the bending of the other extension portion and bend between the wall portions so as to cover the auxiliary closing portion from the outside side. It is preferable. If it does in this way, even if big force acts on a pair of extension part, it can prevent reliably that an obstruction | occlusion part will be extruded from between wall parts by presence of a coating | coated part.

  According to the case of the present invention, it is possible to produce an excellent effect that the closed portion can be easily assembled and the closed state can be maintained even if a force acts on the closed portion.

  Hereinafter, a case according to a first embodiment of the present invention will be described with reference to the accompanying drawings.

  As shown in FIG. 1 (A, B, C), the case according to the present embodiment is formed by bending a resin sheet material (original sheet to be described later). In order to form a storage space A for storing the storage space A, a pair of wall portions 1a and 1b facing each other with a predetermined interval and an object to be stored in the storage space A are prevented from dropping out. The bottom part 2 which is the obstruction | occlusion part which obstruct | occludes between the edge parts (between one end part) of a pair of wall part 1a, 1b is provided.

  Each of the pair of wall portions 1a and 1b has a substantially rectangular shape (substantially rectangular shape), and both ends (side ends) in the short direction are connected to each other to form a flat cylindrical case body 10. Yes. Further, the case body 10 includes a lid piece 11 that can open and close an opening defined by the other end edges of the pair of wall portions 1a and 1b. A locking piece 14 capable of locking the portion is provided. The lid piece 11 extends from the other end edge of the other wall portion 1b to the base end, closes the other end opening with the base end folded back to the one wall portion 1a side, and By locking the tip part to the piece, the posture of the lid piece 11 can be maintained (the closed state with respect to the other end opening can be maintained).

  One end edge of the one wall portion 1a is a straight edge portion 12a extending in a direction perpendicular to the side edge at the center portion, and an inclined edge portion 12b inclined from both ends of the straight edge portion 12a toward each side end. The inclined edge portion 12b extends in a direction away from the other end (opposite end edge) as it goes toward the side end. On the other hand, one end edge 13 of the other wall 1b is formed in a straight line that is substantially perpendicular to the side end.

  The bottom 2 is formed integrally with the case body 10. The bottom portion 2 includes a pair of extending portions 20 and 21 that extend from one end edge of each of the pair of wall portions 1a and 1b and have their distal ends connected to each other. A bent ruled line L is provided at the boundary between the extended portions 20 and 21. That is, the bottom portion 2 is formed by connecting each of the two extended portions 20 and 21 via the bent ruled line L to one end edge of each of the wall portions 1a and 1b. The bent ruled line L is configured by forming a linear groove in the sheet material so as to be thinner than other portions.

  The one extending portion (hereinafter referred to as a first extending portion) 20 extends from one end edge (straight edge portion 12a) of one wall portion 1a as a base end, and the other extending portion. (Hereinafter, referred to as a second extending portion) 21 is extended from one end edge 13 of the other wall portion 1b as a base end. The first extension part 20 and the second extension part 21 are such that the total amount of extension from the respective base ends is longer than the distance between the pair of wall parts 1a, 1b constituting the case body 10. The extension amount (length) is set. Thereby, the 1st extension part 20 and the 2nd extension part 21 are the aspects bent inside the case main body 10 so that a boundary (bending ruled line L) may be located between a pair of wall part 1a, 1b. It has become.

  That is, as shown in FIG. 2, the total extension amount of the first extension portion 20 and the second extension portion 21 is equal to one end edge (straight edge portion 12a) of one wall portion 1a and the other wall portion 1b. It is set to be longer than the linear distance connecting the one end edge 13, and when the first extending portion 20 and the second extending portion 21 are bent between the wall portions 1a and 1b to constitute the bottom portion 2, The boundary between the first extension portion 20 and the second extension portion 21 is between one end edges 12a, 13 of the pair of wall portions 1a, 1b (the straight edge portion 12a of one wall portion 1a and the other wall portion 1b Before the bottom part 2 is formed by the first extension part 20 and the second extension part 21 (before the case is assembled), while located on the side between the wall parts 1a and 1b with respect to the virtual line Lc connecting the one end edge 13). ), The first extension portion 20 and the second extension portion 21 extend outward from one end edges of the wall portions 1a and 1b. The boundary with the portion 21 is more than the imaginary line Lc connecting the one end edges 12a, 13 of the pair of wall portions 1a, 1b (the straight edge portion 12a of one wall portion 1a and the one end edge 13 of the other wall portion 1b). It is designed to be located outside.

  Thereby, in the state which bent the 1st extension part 20 and the 2nd extension part 21 in the case main body 10, and comprised the bottom part 2, it is a thing to be accommodated in a pair of wall part 1a, 1b (accommodating space A). The first extension portion 20 and the second extension portion 21 are prevented from being pushed out to the outside even when a load is applied from the inside. That is, in the state where the bottom portion 2 is configured by the first extending portion 20 and the second extending portion 21, the pair of wall portions 1a and 1b configure the case body 10 with a predetermined interval. Even if a load acts on the first extension part 20 and the second extension part 21 from the accommodation space A side, the pair of wall parts 1a, 1b tries to maintain at a predetermined interval, so the first extension part 20 and As long as the second extending portion 21 is not deformed (buckled), the closed state is maintained.

  In the present embodiment, the amount of extension from the base end of the first extension portion 20 is set to be substantially the same as the interval (maximum interval) between the pair of wall portions 1 a and 1 b, and the base end of the second extension portion 21 is set. The extension amount from the first extension portion 20 is set to approximately half of the extension amount of the first extension portion 20. That is, the ratio of the extension amount between the first extension part 20 and the second extension part 21 is set to 2: 1. Further, as the extension amounts of the first extension portion 20 and the second extension portion 21 are set in this way, the length of the other wall portion 1b in the longitudinal direction is different from the lengthwise direction of the one wall portion 1a. It is set longer than the length from the end to the straight edge portion 12a by a length substantially equal to the extension amount of the second extension portion 21. That is, one end (straight edge portion 12a) of one wall portion 1a where the first extension portion 20 is extended is more than one end edge 13 of the other wall portion 1b where the second extension portion 21 is extended. The second extending portion 21 is configured to be positioned on the other end side (opposite end edge side) at a distance substantially equal to the extending amount of the second extending portion 21.

  Thereby, when the 1st extension part 20 is bend | folded inside the case main body 10 (accommodating space A side), the folding ruled line L is located between a pair of wall part 1a, 1b (accommodating space A side). Thus, the second extending portion 21 faces the other wall portion 1b, and the first extending portion 20 is bent at a substantially right angle with respect to the one wall portion 1a. That is, the case which concerns on this embodiment has the 1st extension part 20 formed the horizontal bottom, and can accommodate a to-be-contained object stably. In the case according to this embodiment, the sticking piece 30 is extended over the entire length of both side ends of the other wall portion 1b, and the sticking piece is interposed via the bent ruled line L formed at the boundary. A pair of wall portions 1a and 1b are connected by bending 30 and sticking to the outer surface of one wall portion 1a via an adhesive. As a result, the flat cylindrical case body 10 is formed by the pair of wall portions 1a and 1b, and at the same time, the sticking piece 30 becomes a mode in which one wall portion 1a is extended to play a leg role. Yes.

  Returning to FIG. 1 (A, B, C), the bottom portion 2 is formed continuously on both sides of the first extension portion 20, and the inclined edge portion (one end of one wall portion 1a) 12b is a base end. The auxiliary bottom 23 is an extended auxiliary closing part. The auxiliary bottom portion 23 is deformed following the bending of the first extension portion 20 by pushing the first extension portion 20 between the wall portions 1a and 1b, and the first extension portion 20 and the wall portion 1a, The shape is set so as to close the space between 1b.

  The auxiliary bottom portion 23 will be described more specifically in conjunction with the first extension portion 20. The first extension portion 20 is formed in a tapered trapezoidal shape from the base end to the tip end, and the auxiliary bottom portion 23. Is connected to the inclined side of the first extending portion 20 and the inclined edge portion 12b of the one wall portion 1a via a bent ruled line L, and the edges of the wall portions 1a and 1b in the short direction ( It is formed in a quadrangular shape that tapers from one end of the inclined edge portion 12b located on the side edge) toward the second extending portion 21. In the present embodiment, a bent ruled line L is provided at the boundary between the first extension portion 20 and the auxiliary bottom portion 23, and the pair of wall portions 1a and 1b are spaced apart at a predetermined interval to form a flat cylindrical shape. In addition to forming the case body 10, as described above, when the first extending portion 20 is bent at a substantially right angle with respect to the wall portion 1a, the first extending portion 20 is deformed following the bending of the first extending portion 20, The substantially triangular space defined by the side edges 12b and 13 of the wall portions 1a and 1b and the inclined side of the first extension portion 20 is closed.

  Further, the bottom portion 2 includes a covering portion 24 that extends from the straight one end edge 13 of the other wall portion 1b as a base end and is continuously formed on both sides of the second extending portion 21. . In the present embodiment, the second extending portion 21 and the covering portion 24 are continuously formed to form a substantially rectangular shape, and the corner portion of the covering portion 24 corresponds to the curvature of the auxiliary bottom portion 23. It is rounded.

  As described above, the second extending portion 21 has the tip connected to the tip of the first extending portion 20 via the bent ruled line L, but the covering portion 24 is connected via the second extending portion 21. Since it has a substantially rectangular shape, it is not connected to the first extending portion 20 and the auxiliary bottom portion 23. The covering portion 24 is in a state where the second extending portion 21 is folded back into the case body 10, that is, in a state where the first extending portion 20 and the second extending portion 21 are pushed between the wall portions 1a and 1b. The auxiliary bottom 23 that deforms following the bending of the first extension 20 is covered (slightly pressed) from the opening (outside) side. Thereby, it is possible to surely prevent the closed state from being released by pushing the bottom portion 2 as the closed portion to the opening side.

  In this case, when the first extending portion 20 and the second extending portion 21 are pushed between the wall portions 1a and 1b, the auxiliary bottom portion 23 is deformed to close the opening, and then the covering portion 24 is the auxiliary bottom portion. The connection distance (the length of the bent ruled line L) between the first extension part 20 and the second extension part 21 is set so as to overlap with the opening 23 from the opening side. Incisions are made at both ends of the connecting portion (bending ruled line L) between the tip of the one extended portion 20 and the tip of the second extended portion 21.

  The case according to this embodiment has the above-described configuration. Next, the production of the case will be described. In producing the case, an original sheet S shown in FIG. 3 is prepared.

  The original sheet S is formed by cutting a sheet material that is hard or semi-rigid from a synthetic resin such as polyester such as polyethylene terephthalate, polyvinyl chloride, polypropylene, or polystyrene, and has a wall thickness of 0.1. The thing of thru | or 0.8 mm is employ | adopted. The original sheet S includes a pair of wall portion forming regions 5a and 5b for forming the pair of wall portions 1a and 1b, an adhesive piece forming region 6 for forming the adhesive piece 30, and a bottom portion 2. A bottom forming area 7 for forming the cover piece 11 and a cover piece forming area 8 for forming the cover piece 11 are formed.

  One wall portion forming region 5a for forming one wall portion 1a is formed in a substantially rectangular shape, and one end portion is cut out in a trapezoidal shape with the bottom side outside, A straight edge portion 12a (an edge corresponding to the upper side portion of the trapezoid) whose one end edge is linear in a direction substantially perpendicular to the longitudinal direction is formed at the center portion, and short from both ends of the straight edge portion 12a. It is comprised by the inclined edge part 12b which inclines toward the both ends (side edge in a wall part) of a direction.

  The inclined edge portion 12b is inclined so as to be separated from the other end in the longitudinal direction as it goes to both ends in the short direction, and the corner portion at one end portion in the longitudinal direction has a triangular shape and protrudes. Yes. In this way, the one end edge constitutes the auxiliary bottom portion that deforms following the bending of the first extension portion 20 so as to close the space on both side ends of the flat cylindrical case body 10 (see FIG. 1). This is for forming 23.

  In addition, a semicircular arc-shaped cut is formed on the other end side of the one wall forming region 5a so as to protrude toward the other end, and the locking piece 14 is formed in the region surrounded by the cut. Is formed.

  The other wall forming area 5b is formed in a rectangular shape, and the length in the longitudinal direction is set to be substantially the same as the edge in the short direction (edge extending in the longitudinal direction) of the one wall forming area 5a. Has been.

  The sticking piece forming region 6 is extended over the entire length from both ends in the short direction of the other wall forming region 5b as base ends, and is bent at the boundary with the wall forming region 5b. Ruled lines L are provided.

  The bottom forming region 7 includes a first extending portion forming region 70 for forming the first extending portion 20 and a second extending portion forming region 71 for forming the second extending portion 21. It is configured.

  The first extension portion forming region 70 is extended from the base edge 12a of the one wall portion forming region 5a at the base end, and the amount of extension from the base end is determined by the wall portion forming regions 5a and 5b. Is set to be substantially the same as the interval between the wall portion forming regions 5a and 5b (wall portions 1a and 1b). The first extension portion forming region 70 is formed in a substantially trapezoidal shape in plan view, the bottom is connected over the entire length of the straight edge portion 12a, and a bent ruled line L is formed at the boundary with the wall portion forming region 5a. Is provided.

  The second extension portion forming region 71 is a region surrounded by a thick line in a rectangular shape in FIG. 3 and is formed in a substantially rectangular shape. The second extending portion forming region 71 has one end edge in the short direction connected to one end edge 13 of the other wall forming region 5b and the other end edge (tip) being the tip of the first extending portion forming region 70. It is connected to the. The extension amount of the second extension part formation region 71 is set to substantially half of the extension amount of the first extension part formation region 70. Thereby, the distance from the other end of one wall part formation area 5a to the front-end | tip of the 1st extension part formation area 70 is the front-end | tip of the 2nd extension part formation area 71 from the other end of the other wall part formation area 5b. It becomes the same as the distance to. Further, a bent ruled line L is provided at the boundary between the first extension portion forming region 70 and the second extension portion forming region 71. As described above, when the first extending portion 20 and the second extending portion 21 are pushed between the wall portions 1a and 1b to form the closing portion 2, the auxiliary bottom portion 23 is deformed to close the opening. Thus, the first extension portion 20 (first extension portion formation region 70) and the second extension portion 21 (second extension portion formation region) so that the covering portion 24 overlaps the auxiliary bottom portion 23 from the opening side. 71) is set (the length of the bent ruled line L), and in the present embodiment, the leading end of the first extending portion 20 (first extending portion forming region 70) and the second extending portion. In order to adjust the connection distance (bending ruled line L) with the tip of the portion 21 (second extending part forming region 71), cuts C and C are made adjacent to both ends of the bent ruled line L.

  Further, in the bottom forming region 7, an auxiliary bottom forming region 72 for forming the auxiliary bottom 23 is formed. The auxiliary bottom portion formation region 72 is connected to the inclined edge portion 12b of one wall portion formation region 5a and to the oblique side portion of the first extension portion formation region 70, and is short in the wall portion formation region 5a. It is formed in a quadrangular shape that tapers from one end of the inclined edge portion 12 b located on the end edge in the direction toward the second extension portion forming region 71. A bent ruled line L is provided at the boundary between the first extension portion forming region 70 and the auxiliary bottom portion forming region 72.

  Further, a covering portion forming region 73 for forming the covering portion 24 is formed in the bottom forming region 7. The covering portion forming region 73 is connected to one end edge of the other wall forming region 5b and is continuous with both sides of the second extending portion forming region 71, like the second extending portion forming region 71. Is formed. The covering portion forming region 73 is formed such that the auxiliary bottom portion 23 is formed when the wall forming regions 5a and 5b become the wall portions 1a and 1b of the case body 10 (when the first extending portion 20 is dropped). In consideration of the deformation, the corner portion on the first extension portion forming region 70 side is rounded so as to correspond to the deformation (curvature) of the auxiliary bottom portion 23. As described above, while the tip of the first extension part formation region 70 and the tip of the second extension part formation region 71 are connected, the auxiliary bottom part formation region 72 is formed of the second extension part. Since the taper is formed toward the formation region 71 and the cuts C and C are made at both ends of the bent ruled line L at the boundary between the first extension portion formation region 70 and the second extension portion formation region 71. The auxiliary bottom portion formation region 72 and the covering portion formation region 73 are not connected.

  The lid piece forming region 8 extends from the other end edge in the longitudinal direction of the other wall forming region 5b as a base end. A bent ruled line L is provided at the boundary between the lid piece forming region 8 and the other wall forming region 5b.

  The original sheet S has the above-described configuration, and a process for producing (forming) a case from the original sheet S will be described. First, as shown in FIG. The original sheet S is folded back at a folding ruled line L provided at the boundary with the extended portion forming region 71. In this state, one wall portion forming region 5a and the first extending portion forming region 70 are overlapped with the other wall forming region 5b and the second extending portion forming region 71. That is, as described above, the distance from the other end of one wall portion forming region 5a to the tip of the first extending portion forming region 70 is the same as the distance from the other end of the other wall forming region 5b to the second extending portion forming region. Since the distance to the front end of 71 is set to be the same, the original sheet is formed by the bent ruled line L provided at the boundary between the first extension portion formation region 70 and the second extension portion formation region 71. When S is folded back, the other end edges of the pair of wall portion forming regions 5a and 5b are overlapped.

  Then, as shown in FIG. 4 (b), the sticking piece forming area 6 is bent at a folding ruled line L, and the sticking piece forming area 6 is attached to one wall portion through sticking means such as an adhesive or a double-sided adhesive tape. It sticks to the outer surface of the formation area 5a.

  Thereafter, as shown in FIG. 4C, the bottom portion formation region 7 is pushed between the pair of wall portion formation regions 5a and 5b (wall portions 1a and 1b). Then, as described above, the total extension amount of the first extension portion 20 and the second extension portion 21 is set to be longer than the interval between the wall portions 1a and 1b of the case body 10 as the final form. Therefore, the first extension portion formation region 70 and the second extension portion formation region 71 are in an elastically deformed state (a state in which the first extension portion formation region 71 is deformed so as to adjust the distance imbalance), and finally the first extension portion formation region. 70 and the second extension part forming region 71 (the first extension part 20 and the second extension part 21) are folded between the wall parts 1a and 1b along the folding ruled line L, and the first extension part 20 and The boundary (bending ruled line L) with the 2nd extension part 21 will be located between wall part 1a, 1b.

  When the first extension portion 20 and the second extension portion 21 are pushed between the wall portions 1a and 1b in this way, the first extension portion 20 is substantially perpendicular to the wall portion 1a as shown in FIG. At the same time, the second extending portion 21 is folded back substantially along the inner surface of the other wall portion 1b. Further, as shown in FIG. 1C, the auxiliary bottom 23 formed continuously from the first extension 20 is curved from the first extension 20 side toward the side ends of the walls 1a and 1b. In addition, the cover 24 overlaps the auxiliary bottom 23, that is, the auxiliary bottom 23 is pressed down. As a result, the covering portion 24 prevents the first extension portion 20 and the auxiliary closing portion 23 that close the opening portion from rising upward, and at the same time prevents the second extension portion 21 from rising to the opening side. Will do.

  In this state, the first extension portion 20 is substantially perpendicular to the wall portions 1a and 1b (in this embodiment, the case main body 10 is used in an upright state, so that the first extension portion 20 is substantially horizontal). The pair of wall portion forming regions 5a and 5b are separated from each other (pushed apart) by the portion 20 to become wall portions 1a and 1b, and the flat cylindrical case body 10 is configured. And in the state which accommodated the to-be-contained object in the accommodation space A formed between wall part 1a, 1b, the cover piece formation area | region 8 (cover piece 11) is folded in the folding ruled line L, and it forms in one wall part 1a. The closure of the other end opening by the lid piece 11 is maintained by locking the distal end portion of the lid piece 11 to the latching piece 14 (inserted between the locking piece 14 and the wall portion). (See FIG. 1 (a)). As described above, since the locking piece 14 is formed by providing a cut in one wall 1a, the tip of the lid piece 11 is removed from between the wall and the locking piece 14. Thus, the closed state of the other end opening can be released and the contained object can be taken out.

  As described above, in the case according to the present embodiment, the bottom portion 2 that closes between the end portions (one end portions) of the pair of wall portions 1a and 1b is connected to each of the pair of wall portions 1a and 1b that constitute the case body 10. The first extended portion 20 and the second extended portion 21 are connected to each other at the one end edges 12a and 13 and the distal ends thereof are connected to each other. Since the total amount of extension from the base end of the two extending portions 21 is formed to be longer than the distance between the pair of wall portions 1a, 1b, the first extending portion 20 and the second extending portion 21 is forcibly pushed into the space between the wall portions 1a and 1b (inside the case body 10), and the opening on one end side of the case body 10 can be maintained in a closed state.

  The first extension portion 20 has an extension amount from the base end set substantially equal to the interval between the wall portions 1a and 1b, and the second extension portion 21 has an extension amount from the base end. Is set to substantially half of the extension amount of the first extension portion 20, and one end edge of one wall portion 1a is more than the extension amount of the second extension portion 21 than one end edge of the other wall portion 1b. Since it is located on the other end edge side with a substantially equal distance, the first extending portion 20 can form a bottom that is substantially orthogonal (horizontal) to the wall portion 1a. As a result, the appearance can be improved and the object to be stored can be stably stored.

  Moreover, since the 1st extension part 20 makes a substantially right angle with respect to the one wall part 1a, and the 2nd extension part 21 becomes an aspect along the inner surface of the other wall part 1b, the 1st extension part The bent ruled line L connecting the 20 and the second extension part 21 is located on the other wall part 1b side (adjacent to the wall part 1b), and the load of the object to be accommodated is the first extension part. As long as it acts as an axial force on the second extension 21 even if it acts on the bottom 20, unless the second extension 21 is buckled, the bottom 2 (the first extension 20 and the second extension The part 21) can be positioned between the wall parts 1a and 1b to maintain the closed state. That is, as long as an excessive force enough to buckle the second extending portion 21 does not act, the blockage between the end portions of the wall portion by the bottom portion 2 can be maintained.

  Further, the bottom portion 2 includes an auxiliary bottom portion 23 that extends from one end edge (inclined edge portion 12 b) of one wall portion 1 a as a base end and is continuously formed on both sides of the first extension portion 20. Therefore, the auxiliary bottom portion 23 is deformed so as to correspond to the deformation (bending) of the first extension portion 20 in a state where the case body 10 is configured by separating the pair of wall portions 1a, 1b at a predetermined interval. And the substantially whole area of opening between wall part 1a, 1b with the 1st extension part 20 can be obstruct | occluded. In addition, the bottom portion 2 includes a covering portion 24 continuously formed on both sides of the second extending portion 21 with the one end edge 13 of the other wall portion 1b as a base end. Since the shape is set so as to cover the auxiliary bottom portion 23 from the opening side in a state where the second extending portion 21 is folded between the wall portions 1a and 1b, a large force acts on the bottom portion from the accommodation space A side. Also, the bottom portion can be reliably prevented from being pushed out to the opening side.

  In addition, as described above, the first extension portion 20 is bent substantially between the wall portions 1a and 1b so that the first extension portion 20 is substantially perpendicular to the wall portion (substantially horizontal). Although one end portion of one wall portion 1a is cut out in a trapezoidal shape, since the sticking piece 30 is formed over the entire length of the side end of the other wall portion 1b, a pair of wall portions 1a. , 1b even if the length in the longitudinal direction is long or short, the case can be arranged in an upright state by the sticking piece 30.

  Next, a case according to the second embodiment of the present invention will be described. In addition, about the structure equivalent to the structure of 1st embodiment and the structure of 1st embodiment, while attaching | subjecting the same name and the same code | symbol, and referring to drawing used by description of 1st embodiment, To do.

  As shown in FIG. 5 (A, B, C), the case according to this embodiment is formed by bending a resin sheet material (original sheet to be described later). In order to form an accommodation space A for accommodating an object to be accommodated (not shown), a pair of wall portions 1a and 1b facing each other with a predetermined interval and the object to be accommodated in the accommodation space A are exposed to the outside. In order to prevent it from falling off, a pair of blocking portions 2 are provided to block between both side ends of the pair of wall portions 1a and 1b.

  Each of the pair of wall portions 1a and 1b has a substantially rectangular shape (substantially rectangular shape), and one ends in the short direction are connected to each other via a bent ruled line L, and the other ends are described later. It is connected via a lid piece 11 to constitute a flat cylindrical case body 10. The one wall portion 1a is provided with a locking piece 14 capable of locking the front end portion of the lid piece 11. The lid piece 11 extends from the other end edge of the other wall portion 1b to the base end, closes the other end opening with the base end folded back to the one wall portion 1a side, and The posture of the lid piece 11 can be maintained (the closed state with respect to the opening of the other end can be maintained) by locking the tip portion to the piece 14.

  Both end edges (both side edges) of the one wall portion 1a in the longitudinal direction are a straight edge portion 12a extending in a direction perpendicular to both edge edges in the short direction at the center portion, and wall portions from both ends of the straight edge portion 12a. The inclined edge portion 12b is inclined toward each edge in the short direction of 1a, and the inclined edge portion 12b extends in a direction away from the opposite side edge toward the edge. . On the other hand, both end edges (both ends) 13 in the longitudinal direction of the other wall portion 1b are formed in a straight line substantially perpendicular to the edges (one end and the other end) in the short direction.

  Each closing part 2 is formed integrally with the case main body 10. Each blocking portion 2 is extended from each of the longitudinal edges (side ends) of the pair of wall portions 1a and 1b as base ends, and a pair of extending portions 20 and 21 having their distal ends connected to each other. A bent ruled line L is provided at the boundary between the pair of extending portions 20 and 21. That is, the closing portion 2 is formed by connecting two extending portions 20 and 21 that are continuous via the bent ruled line L to the side edges 12a and 13 of the wall portions 1a and 1b, respectively. . The bent ruled line L is configured by forming a linear groove in the sheet material so as to be thinner than other portions.

  One extending portion (hereinafter referred to as a first extending portion) 20 of each closing portion 2 extends from the side end edge (straight edge portion) 12a of one wall portion 1a to the base end, and the other The extension part (hereinafter referred to as second extension part 21) extends from the side end edge 13 of the other wall part 1b to the base end. The first extension part 20 and the second extension part 21 are such that the total amount of extension from the respective base ends is longer than the distance between the pair of wall parts 1a, 1b constituting the case body 10. The extension amount (length) is set. Thereby, the 1st extension part 20 and the 2nd extension part 21 are the aspects bent inside the case main body 10 so that a boundary (bending ruled line L) may be located between a pair of wall part 1a, 1b. It has become.

  That is, as shown in FIG. 2, the total amount of extension of the first extension portion 20 and the second extension portion 21 is equal to the side edge (straight edge portion 12a) of the one wall portion 1a and the other wall portion 1b. It is set so that it may become longer than the linear distance which connects the side edge 13 of this, and the obstruction | occlusion part 2 was comprised by bend | folding the 1st extension part 20 and the 2nd extension part 21 between wall part 1a, 1b. Sometimes, the boundary between the first extension portion 20 and the second extension portion 21 is the side edges 12a, 13 of the pair of wall portions 1a, 1b (the straight edge portion 12a of one wall portion 1a and the other The first extending portion 20 and the second extending portion 21 form the closed portion 2 while being located on the side between the wall portions 1a and 1b from the imaginary line Lc connecting the side edge 13) of the wall portion 1b. Before the assembly (before assembling the case), the first extension part 20 and the second extension part 21 extend outward from one end edges of the walls 1a and 1b, An imaginary line in which the boundary with the two extending portions 21 connects the one end edges 12a, 13 of the pair of wall portions 1a, 1b (the straight edge portion 12a of one wall portion 1a and the one end edge 13 of the other wall portion 1b). It is located outside of Lc.

  As a result, the first extension portion 20 and the second extension portion 21 are folded into the case body 10 to form the closing portion 2, and are accommodated in the space between the pair of wall portions 1 a and 1 b (accommodation space A). When a thing is accommodated, even if a load acts from the inside, the 1st extension part 20 and the 2nd extension part 21 are prevented from being pushed outside. That is, in the state where the first extension part 20 and the second extension part 21 constitute the closing part 2, the pair of wall parts 1a and 1b constitute the case body 10 with a predetermined interval. Even if a load acts on the first extension part 20 and the second extension part 21 from the accommodation space A side, the pair of wall parts 1a and 1b try to maintain at a predetermined interval, and thus the first extension part 20 And as long as the 2nd extension part 21 does not deform | transform (buckling), the obstruction | occlusion state is maintained.

  In the present embodiment, the amount of extension from the base end of the first extension portion 20 is set to be substantially the same as the interval (maximum interval) between the pair of wall portions 1 a and 1 b, and the base end of the second extension portion 21 is set. The extension amount from the first extension portion 20 is set to approximately half of the extension amount of the first extension portion 20. That is, the ratio of the extension amount between the first extension part 20 and the second extension part 21 is set to 2: 1. Further, as the extension amounts of the first extension portion 20 and the second extension portion 21 are set in this way, the length in the longitudinal direction of the other wall portion 1b (the length between both side ends) is one of the lengths. The length is set to be approximately twice as long as the extension amount of the second extension portion 21 as compared with the length between the straight edge portions 12a in the longitudinal direction of the wall portion 1a. That is, the side end (straight edge portion) 12a of one wall portion 1a where the first extension portion 20 is extended is the side end edge 13 of the other wall portion 1b where the second extension portion 21 is extended. It is configured to be positioned on the opposite side edge 13 side with a distance substantially equal to the extension amount of the second extension portion 21.

  Thereby, when the 1st extension part 20 is bend | folded inside the case main body 10 (accommodating space A side), the folding ruled line L is located between a pair of wall part 1a, 1b (accommodating space A side). Thus, the second extending portion 21 faces the other wall portion 1b, and the first extending portion 20 is bent at a substantially right angle with respect to the one wall portion 1a.

  Returning to FIG. 5 (A, B, C), the closing portion 2 is formed continuously on both sides of the first extending portion 20, and the inclined edge portion (side end of one wall portion 1a) 12b is formed. An auxiliary closing portion 23 extending from the base end is provided. The auxiliary closing part 23 is deformed by following the bending of the first extension part 20 by pushing the first extension part 20 between the wall parts 1a and 1b, and the first extension part 20 and the wall part 1a. , 1b, the shape is set so as to close the space.

  The auxiliary closing part 23 will be described in more detail together with the first extending part 20. The first extending part 20 is formed in a tapered trapezoidal shape from the proximal end to the distal end. The portion 23 is connected to the inclined side of the first extending portion 20 and the inclined edge portion 12b of the one wall portion 1a via a bent ruled line L, and the ends of the wall portions 1a and 1b in the short direction. It is formed in a quadrangular shape that tapers from one end of the inclined edge portion 12 b located on the edge toward the second extending portion 21. In the present embodiment, a bent ruled line L is provided at the boundary between the first extending portion 20 and the auxiliary closing portion 23, and the pair of wall portions 1a and 1b are spaced apart at a predetermined interval to form a flat cylindrical shape. When the first extending portion 20 is bent at a substantially right angle with respect to the wall portion as described above, the case main body 10 is deformed following the bending of the first extending portion 20, The substantially triangular space defined by the side edges 12b, 13 of the wall portions 1a, 1b and the inclined side of the first extension portion 20 is closed.

  Further, the closing portion 2 includes a covering portion 24 that extends from the straight side edge 13 of the other wall portion 1b as a base end and is continuously formed on both sides of the second extending portion 21. ing. In the present embodiment, the second extending portion 21 and the covering portion 24 are continuously formed to form a substantially rectangular shape, and the corner portion of the covering portion 24 is curved of the auxiliary closing portion 23 as described above. It is rounded to correspond to.

  As described above, the second extending portion 21 has the tip connected to the tip of the first extending portion 20 via the bent ruled line L, but the covering portion 24 is connected via the second extending portion 21. Since it has a substantially rectangular shape, it is not connected to the first extending portion 20 and the auxiliary closing portion 23. The covering portion 24 is in a state where the second extending portion 21 is folded back into the case body 10, that is, in a state where the first extending portion 20 and the second extending portion 21 are pushed between the wall portions 1a and 1b. The auxiliary closing part 23 which deforms following the bending of the first extension part 20 is covered (pressed) from the opening (outside) side. Thereby, it can prevent reliably that the obstruction | occlusion part 2 is extruded to the opening side, and the obstruction | occlusion state is cancelled | released.

  In this case, when the first extending portion 20 and the second extending portion 21 are pushed between the wall portions 1a and 1b, the auxiliary bottom portion 23 is deformed to close the opening, and then the covering portion 24 is the auxiliary bottom portion. The connection distance (the length of the bent ruled line L) between the first extension part 20 and the second extension part 21 is set so as to overlap with the opening 23 from the opening side. Incisions are made at both ends of the connecting portion (bending ruled line L) between the tip of the one extended portion 20 and the tip of the second extended portion 21.

  The case according to this embodiment has the above-described configuration. Next, the production of the case will be described. In producing the case, an original sheet S shown in FIG. 6 is prepared.

  The original sheet S is formed by cutting a sheet material that is hard or semi-rigid from a synthetic resin such as polyester such as polyethylene terephthalate, polyvinyl chloride, polypropylene, or polystyrene, and has a wall thickness of 0.1. The thing of thru | or 0.8 mm is employ | adopted. The original sheet S includes a pair of wall portion forming regions 5a and 5b for forming the pair of wall portions 1a and 1b, a closing portion forming region 7 for forming the closing portion 2, and the lid piece 11. It is comprised by the lid piece formation area 8 for forming.

  One wall portion forming region 5a for forming one wall portion 1a is formed in a substantially rectangular shape, and both end portions are notched in a trapezoidal shape with the bottom side outside, A straight edge portion 12a (an edge corresponding to the upper side portion of the trapezoidal shape) in which both side edges are linear in a direction substantially perpendicular to the longitudinal direction is formed in the center portion, and short from both ends of the straight edge portion 12a. It is comprised by the inclination edge part 12b which inclines toward the both ends of a hand direction.

  The inclined edge portion 12b is inclined so as to be separated from the side edge 12b on the opposite side in the longitudinal direction as it goes to both ends in the short side direction, and the corners at both side end portions in the longitudinal direction have a triangular shape. It has a protruding shape. In this way, both end edges constitute the auxiliary closing portion that deforms following the bending of the first extension portion 20 so as to close the space on both ends of the flat cylindrical case body 10 (see FIG. 5). This is for forming 23.

  Moreover, a semicircular arc-shaped cut is formed on the other end side of the one wall portion forming region 5a so as to protrude toward the other end, and in the region surrounded by the cut, the locking piece 14 is Forming.

  The other wall forming area 5b is formed in a rectangular shape, and the length in the longitudinal direction is set to be substantially the same as the edge in the short direction (edge extending in the longitudinal direction) of the one wall forming area 5a. Has been.

  The closed portion forming region 7 is formed as a pair connected to both side edges 12a, 12b in the longitudinal direction of one wall forming region 5a, and a first extension for forming the first extending portion 20 is formed. The extended portion forming region 70 and the second extended portion forming region 71 for forming the second extended portion 21 are configured.

  The first extension portion forming region 70 is extended from the base edge of each straight edge portion 12a of the one wall portion forming region 5a, and the amount of extension from the base end is the wall portion forming region (wall Portion) is set to be approximately the same as the interval between the wall forming regions 5a and 5b (wall portions 1a and 1b) when the case body 10 is formed. The first extension portion forming region 70 is formed in a substantially trapezoidal shape in plan view, the bottom is connected over the entire length of the straight edge portion 12a, and is bent at the boundary with one wall portion forming region 5a. Ruled lines L are provided.

  The second extension portion formation region 71 is a region surrounded by a thick line in a rectangular shape in FIG. 6 and is formed in a substantially rectangular shape. The second extension portion formation region 71 is extended from the distal end of the first extension portion formation region 70, and the extension amount of the second extension portion formation region 71 is the first extension. It is set to substantially half of the extension amount of the part forming region 70. A bent ruled line L is provided at the boundary between the first extension portion formation region 70 and the second extension portion formation region 71. As described above, when the first extending portion 20 and the second extending portion 21 are pushed between the wall portions 1a and 1b to form the closing portion 2, the auxiliary closing portion 23 is deformed to close the opening. After that, the first extension part 20 (first extension part forming region 70) and the second extension part 21 (second extension part) are arranged so that the covering part 24 overlaps the auxiliary closing part 23 from the opening side. The connection distance to the formation region 71) (the length of the bent ruled line L) is set, and in the present embodiment, the tip of the first extension portion 20 (first extension portion formation region 70) and the second In order to adjust the connection distance (bending ruled line L) with the tip of the extending part 21 (second extending part forming region 71), notches C and C are made adjacent to both ends of the bent ruled line L. Yes.

  Each closed portion forming region 7 is formed with an auxiliary closed portion forming region 72 for forming the auxiliary closed portion 23. The auxiliary blocking portion forming region 72 is connected to the inclined edge portion 12b of one wall portion forming region 5a and to the oblique side portion of the first extension portion forming region 70, and is short of the wall portion forming region 5a. It is formed in a quadrangular shape that tapers from one end of the inclined edge portion 12 b located on the edge in the hand direction toward the second extension portion forming region 71. A bent ruled line L is provided at the boundary between the first extension portion forming region 70 and the auxiliary closing portion forming region 72.

  Furthermore, a covering portion forming region 73 for forming the covering portion 24 is formed in each closing portion forming region 7. The covering portion forming region 73 is connected to one end edge of the other wall forming region 5b and is continuous with both sides of the second extending portion forming region 71, like the second extending portion forming region 71. Is formed. In the covering portion forming region 73, when the wall forming region becomes the wall portions 1a and 1b of the case main body 10 (when the first extending portion 20 is dropped and bent), the auxiliary closing portion 23 is deformed. In view of this, the corner portion on the first extension portion forming region 70 side is rounded so as to correspond to the deformation (curvature) of the auxiliary closing portion 23. In addition, as described above, while the tip of the first extension portion forming region 70 and the tip of the second extension portion forming region 71 are connected, the auxiliary closing portion forming region 72 is connected to the second extension portion forming region 71. Since it is tapered toward the portion forming region 71, the auxiliary closing portion forming region 72 and the covering portion forming region 73 are not connected.

  Further, the first extension portion forming region 70 and the second extension portion forming region 71 are extended from the side edges 12a and 13 of the wall portions 1a and 1b, and the leading ends thereof are connected to each other. The sticking piece forming region 6 is extended from the tip of the second extending portion forming region 71 to the base 20 and the second extending portion 21, and the sticking piece forming region 6 and the second extending portion 21 A bent ruled line L is provided at the boundary with the extended portion forming region 71. That is, in the original sheet S, the second extension portion formation region 71 extends through the first extension portion formation region 70 that extends from the straight edge portion 12a of one wall portion formation region 5a as a base end. In this state, the first extension portion forming region 70 (first extension portion 20) extends from the one wall portion forming region 5a (wall portion 1a) in the assembled state in the case. In addition, the second extending portion forming region 71 (second extending portion 21) extends from the other wall forming region 5b (wall portion 1b).

  The lid piece forming region 8 extends from the other end of the other wall portion forming region 5b in the short direction as a base end. A bent ruled line L is provided at the boundary between the lid piece forming region 8 and the other wall forming region 5b.

  The original sheet S has the above configuration, and the process of producing (forming) a case from the original sheet S will be described. First, as shown in FIG. 7 (a), the boundary between the pair of wall portion forming regions 5a and 5b. The original sheet S is folded back at the folding ruled line L provided in FIG. 7, and then provided at the boundary between the first extension portion formation region 70 and the second extension portion formation region 71 as shown in FIG. The original sheet S is folded at the folding ruled line L, and the sticking piece forming region 6 and the outer surface of the other wall portion forming region 5b are stuck via a sticking means such as an adhesive or a double-sided adhesive tape.

  Then, as shown in FIG. 7C, the closed portion forming region 7 is pushed between the pair of wall forming regions 5a and 5b (wall portions 1a and 1b). Then, as described above, the total extension amount of the first extension portion 20 and the second extension portion 21 is larger than the interval between the wall portions 1a and 1b (between the side ends) of the case body 10 as the final form. Since it is set to be long, the first extension portion forming region 70 and the second extension portion forming region 71 are elastically deformed (deformed to adjust the distance imbalance). The extension part formation region 70 and the second extension part formation region 71 (the first extension part 20 and the second extension part 21) are folded back along the folding ruled line L between the wall parts 1a and 1b. The boundary (bending ruled line L) between the extension part 20 and the second extension part 21 is located between the wall parts 1a and 1b.

  When the first extension portion 20 and the second extension portion 21 are pushed between the wall portions 1a and 1b in this way, the first extension portion 20 is substantially perpendicular to the wall portion 1a as shown in FIG. At the same time, the second extending portion 21 is folded back substantially along the inner surface of the other wall portion 1b. Further, as shown in FIG. 5C, the auxiliary closing portion 23 formed continuously with the first extending portion 20 is an edge in the short direction of the wall portions 1a and 1b from the first extending portion 20 side. And the covering portion 24 overlaps the auxiliary blocking portion 23, that is, a mode in which the auxiliary closing portion 23 is pressed down. As a result, the covering portion 24 prevents the first extension portion 20 and the auxiliary closing portion 23 that close the opening portion from rising upward, and at the same time prevents the second extension portion 21 from rising to the opening side. Will do.

  In this state, the first extension portion 20 is substantially perpendicular to the wall portions 1a and 1b (in this embodiment, the case main body 10 is used in an upright state, so that the first extension portion 20 is substantially horizontal). The pair of wall portion forming regions 5a and 5b are separated from each other (pushed apart) by the portion 20 to become wall portions 1a and 1b, and the case body 10 is configured. The lid piece forming region 8 (lid piece 11) is folded at the folding ruled line L in a state where the object to be accommodated is accommodated in the accommodating space A formed between the walls 1a and 1b, and formed on one wall 1a. The closure of the other end opening by the lid piece 11 is maintained by locking the distal end portion of the lid piece 11 to the latching piece 14 (inserted between the locking piece 14 and the wall portion). (See FIG. 5 (a)). As described above, since the locking piece 14 is formed by providing a cut in one wall 1a, the tip of the lid piece 11 is removed from between the wall and the locking piece 14. Thus, the closed state of the other end opening can be released and the contained object can be taken out.

  As described above, the case according to the present embodiment includes a pair of wall portions that configure the case main body 10 as the closed portion 2 that closes the side ends (end portions) 12a and 13 of the pair of wall portions 1a and 1b. The first extending portion 20 and the second extending portion 21 are connected to each other at the end edges 12a and 13b of both sides 1a and 1b, and the first ends are connected to each other. Since the total amount of extension from the proximal ends of the protruding portion 20 and the second extending portion 21 is set to be longer than the distance between the pair of wall portions 1a, 1b, the first extending portion 20 and the second extending portion By forcibly pushing the protruding portion 21 between the wall portions 1a and 1b (inside the case main body 10), it is possible to prevent the falling to the opening side and to maintain the openings at both ends of the case main body 10 in a closed state. it can.

  The first extension portion 20 has an extension amount from the base end set substantially equal to the interval between the wall portions 1a and 1b, and the second extension portion 21 has an extension amount from the base end. Is set to substantially half of the extension amount of the first extension portion 20, and one end of one wall portion 1a is substantially equal to the extension amount of the second extension portion 21 than one end of the other wall portion 1b. Since the first extension 20 and the second extension 21 are pushed between the walls 1a and 1b, the first extension 20 is located on the other edge side. The second extending portion 21 is formed along the inner surface of the other wall portion 1b while being substantially perpendicular to the one wall portion 1a. As a result, the first extending portion 20 and the second extending portion 21 are provided. Is folded (adjacent to the wall) on the other wall 1b side. As a result, the object to be moved moves in the storage space A by transportation or the like, and even if an impact or the like due to the movement of the object to be stored acts on the first extension part 20, Unless the buckling occurs in the second extending portion 21 acting as a force, the closing portion 2 (the first extending portion 20 and the second extending portion 21) is positioned between the wall portions 1a and 1b and closed. The state can be maintained. That is, as long as an excessive force enough to buckle the second extending portion 21 does not act, the blocking between the end portions of the wall portion by the closing portion 2 can be maintained. In addition, the appearance of the blocking portion 2 can be improved.

  Further, the closing portion 2 extends from one side edge (inclined edge portion 12b) of one wall portion 1a as a base end and is continuously formed on both sides of the first extending portion 20. Since the case body 10 is configured by separating the pair of wall portions 1a and 1b at a predetermined interval, the auxiliary closing portion 23 is deformed (bent) into the first extension portion 20 because the portion 23 is provided. It deform | transforms so that it may respond | correspond and can block | close the substantially whole area of opening between wall part 1a, 1b with the 1st extension part 20. FIG. In addition, the closing portion 2 includes a covering portion 24 continuously formed on both sides of the second extending portion 21 with the side edge 13 of the other wall portion 1b as a base end. In addition, since the second extending portion 21 is folded between the wall portions 1a and 1b, the shape is set so as to cover the auxiliary closing portion 23 from the opening side. Even if force acts, it can prevent reliably that the obstruction | occlusion part 2 is extruded to the opening side.

  Note that the case of the present invention is not limited to the above-described embodiment, and it is needless to say that various modifications can be made without departing from the scope of the present invention.

  In the first and second embodiments, the flat cylindrical case body 10 is formed by the pair of wall portions 1a and 1b. However, the present invention is not limited to this. A substantially cylindrical case main body may be formed, or a side wall may be formed between the edges of the wall portion, and the case main body 10 may be formed in a rectangular tube shape. When the case body 10 is formed in a rectangular tube shape, as shown in FIG. 8, the first extension portion 20 is formed in a rectangular shape, and the first extension portion 20 and the second extension portion 21 are formed in the wall portion 1a, In the state of being pushed in between 1b, the shape of the auxiliary closing part 23 is set so that the auxiliary closing part (auxiliary bottom part) 23 rises along the side wall following the bending of the first extending part 20, and the first extension In a state where the protruding portion 20 and the second extending portion 21 are pushed between the wall portions 1a and 1b, the both side end portions of the wall portions 1a and 1b are bent corresponding to the shape of the first extending portion 20, and the bent portions are bent. What is necessary is just to set the dimension of wall part 1a, 1b so that the side wall 40 may be comprised in the side edge part.

  In the first and second embodiments, the extension amount of the first extension portion 20 is made to correspond to the interval between the wall portions 1a and 1b so that the first extension portion 20 is substantially perpendicular to the wall portions 1a and 1b. However, the present invention is not limited to this, and the total extension amount of the first extension portion 20 and the second extension portion 21 is set to be longer than the interval between the wall portions 1a and 1b. Good. Even in this case, when the original sheet S is bent to form the closing portion 2 that closes the end portions of the wall portions 1a and 1b with the first extending portion 20 and the second extending portion 21, If the one extension part 20 and the second extension part 21 are deformed and forcedly pushed in, the first extension part 20 and the second extension part 21 are maintained in a posture folded between the wall parts 1a and 1b. As a result, the closed state can be maintained as long as an excessive force that deforms the first extending portion 20 and the second extending portion 21 does not act.

  In the first and second embodiments, the edge of one wall 1a (one edge in the first embodiment and both edges in the second embodiment) is the straight edge 12a and the inclined edge 12b. However, the present invention is not limited to this. For example, the end edge of one wall portion 1a that is the base end of the first extension portion 20 and the auxiliary closing portion 23 is set to the opposite end side. You may make it form in the circular arc which makes a concave shape, or an elliptical arc shape. In this case, on the basis of an imaginary line connecting the edges where the pair of wall portions 1a and 1b are connected to each other, the tip continuously formed by the first extending portion 20 and the auxiliary closing portion 23 is one wall. It is preferable to make it symmetrical with the edge of the part 1a.

  In the first and second embodiments, the amount of extension from the base ends of the second extension portion 21 and the covering portion 24 is the same, but is not limited to this, for example, the tip of the covering portion 24 The extension amount from the base end of the covering portion 24 is set to be larger than that of the second extension portion 21 so that is positioned closer to the first extension portion 20 than the tip of the second extension portion 21. Also good. In this way, the covering portion 24 covers the auxiliary closing portion 23 in a pressed state, and the first extending portion 20 as well as the auxiliary closing portion 23 is reliably positioned, and the closing portion 2 The maintenance of the closed state can be further ensured.

  In the first and second embodiments, the auxiliary closing portion 23 is provided in the closing portion 2 so that substantially the entire region between the end portions of the wall portion can be closed together with the first extending portion 20. For example, the end portions of the wall portions 1a and 1b may be partially closed only by the first extending portion 20.

  In the first and second embodiments, the covering portion 24 is provided with the covering portion 24, and the covering portion 24 is covered (pressed) with the auxiliary closing portion 23 pushed into the case body 10. For example, only the second extending portion 21 may be extended from the end edge of the other wall portion 1b as a base end. Even if it does in this way, wall part 1a, 1b by the obstruction | occlusion part 2 is set because the extension amount of the 1st extension part 20 and the 2nd extension part 21 is set longer than the space | interval of wall part 1a, 1b. It is possible to maintain a closed state between the ends of the two. However, in order to cover the gap between the first extension part 20 and the wall parts 1a, 1b or to prevent the first extension part 20 (auxiliary closing part 23) from being lifted, as in the above embodiment, It is preferable to provide the covering portion 24 on the closing portion 2.

  In the first and second embodiments described above, the closed state of the opening is maintained by locking the distal end portion of the lid piece 11 with the locking piece 14. However, the present invention is not limited to this. Various modes can be adopted as means for maintaining 11 in the closed state.

  In the first and second embodiments, the case (the original sheet S for producing the case) is configured by a resin sheet. However, the present invention is not limited to this. For example, a paper sheet may be used. Good. However, when a paper sheet is used, it is a matter of course that thick paper is used to obtain the strength of the first extending portion 20 and the second extending portion 21.

It is a case which concerns on 1st embodiment of this invention, Comprising: (A) shows a front view, (B) shows a side view, (C) shows a bottom view. It is II sectional drawing of FIG. 1 (FIG. 5), Comprising: Sectional drawing of the obstruction | occlusion part containing a part of case body is shown. The top view of the original sheet for producing the case which concerns on 1st embodiment is shown. It is explanatory drawing about the manufacturing process of the case which concerns on 1st embodiment, Comprising: (A) shows the state which bent the original sheet so that a pair of wall part formation area might overlap, (B) is a sticking piece. (C) shows the state which pushes a 1st extension part and a 2nd extension part between wall parts, and forms the obstruction | occlusion part. It is a case which concerns on 2nd embodiment of this invention, Comprising: (A) shows a front view, (B) shows a bottom view, (C) shows a side view. The top view of the original sheet for producing the case which concerns on 2nd embodiment is shown. It is explanatory drawing about the production process of the case which concerns on 2nd embodiment, Comprising: (A) shows the state which bent the original sheet so that a pair of wall part formation area might overlap, (B) is a sticking piece. (C) shows the state which pushes a 1st extension part and a 2nd extension part between wall parts, and forms the obstruction | occlusion part. An explanatory view of a closure part of a case concerning other embodiments of the present invention is shown. It is explanatory drawing for demonstrating the form of the obstruction | occlusion part of the conventional case, Comprising: (a) was comprised by the piece part which the obstruction | occlusion part which obstruct | occludes the opening of a flat cylindrical case main body extended from the wall part. The top view of a case is shown and (b) was formed by engaging the one part extended from each edge of the wall part which the obstruction | occlusion part which obstruct | occludes opening of a flat cylindrical case main body opposes. The top view of a case is shown.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1a, 1b ... Wall part, 2 ... Closure part, bottom part, 5a, 5b ... Wall part formation area, 6 ... Sticking piece formation area, 7 ... Closure part formation area, bottom part formation area, 8 ... Cover piece formation area, 10 ... Case body, 11 ... Cover piece, 12a ... Straight edge (edge, side edge), 12b ... Inclined edge (edge, side edge), 13 ... Edge, side edge, 14 ... Locking Pieces, 20 ... first extension part (extension part), 21 ... second extension part (extension part), 23 ... auxiliary bottom part, auxiliary closing part, 24 ... covering part, 30 ... sticking piece, 70 ... 1st extension part formation area, 71 ... 2nd extension part formation area, 72 ... auxiliary bottom part formation area, auxiliary closing part formation area, 73 ... covering part formation area, S ... original sheet, L ... bent ruled line

Claims (4)

  A pair of wall portions opposed to each other with a space therebetween to form an accommodation space for accommodating the objects to be accommodated, and ends of the pair of wall portions to prevent the objects within the accommodation space from falling off. And the pair of wall portions and the closing portion are formed by bending a sheet material, and the closing portion is based on respective edges of the pair of wall portions. It is constructed with a pair of extending portions formed so as to be longer than the distance between the edges of the wall portion that is the base end of each extending portion, and is extended to the ends. The pair of extending portions are bent at the proximal ends so that the distal ends are connected to each other and the connecting portion is located between the pair of wall portions.   The one extension portion is formed with the extension amount from the base end being substantially the same as the interval between the wall portions, and the other extension portion has the extension amount from the base end of one extension portion. The extension of one wall is formed so as to be substantially half the amount of extension of one part, and the edge of one wall part where one extension part is extended is the end of the other wall part where the other extension part is extended The case according to claim 1, wherein the case is located on the opposite end edge side at a distance substantially equal to the extension amount of the other extension part from the edge.   The closing portion further includes an auxiliary closing portion that extends from an end edge of the one wall portion as a base end, and is continuously formed on both sides of the one extending portion. The shape is set so as to deform by following the bending of the extending portion by pushing the extending portion between the wall portions and close the space between the extending portion and the wall portion. The case described.   The closing portion further includes a covering portion that extends from the edge of the other wall portion as a base, and is continuously formed on both sides of the other extending portion, and the covering portion includes a pair of extending portions. The shape is set so that the portion is pushed between the wall portions while following the bending of the other extension portion and folded between the wall portions so as to cover the auxiliary closing portion from the outside. The case described.

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