WO2008095411A1

WO2008095411A1 - Foldable container and its blank

Info

Publication number: WO2008095411A1
Application number: PCT/CN2008/000252
Authority: WO
Inventors: Weiguang Li
Original assignee: Weiguang Li
Priority date: 2007-02-06
Filing date: 2008-01-31
Publication date: 2008-08-14

Abstract

A foldable container (190) and its blank are made of a foldable fine sheet. The blank can be folded into the container from a plane. The container (190) has a substrate (39), four sidewalls (22, 33, 44, 55) which are extended from the substrate, four angles (20a~d) and two opposite handles (60a, 60b). The sidewalls are connected by four angles, and each angle includes a paddleboard (11~14) and a lug (19a~d). The container (190) has an opposite folding line (47). When the container (190) is situated at a plane, the fine sheet at both sides of the opposite folding line (47) can be essentially overlapped. The substrate (39) has a supporting surface (92) surrounded by a quadrangular folding line. The fourth folding lines (18a~d) extended from each angle (39) of the quadrangular folding line define the substrate (39) into a stereoscopic body with five surfaces.

Description

-Foldable container and blank thereof

The present invention relates to a collapsible container and a blank thereof, and more particularly to a collapsible container composed entirely of a sheet of plastic or a similar foldable sheet material and a blank thereof, which can be folded from a flat state to a use state The container. Background technique

Under the prior art, there are many examples of a container formed by folding a sheet of sheet material. Such a container generally comprises a base and four side walls, and the adjacent two side walls are equal by a pair of bottom angles. The triangular jaws are joined to each other, and each pair of adjacent jaws are folded over the fold line between them and rested against the side walls so that the side walls stand on the periphery of the substrate to form a container in use.

Typically, the various components of an existing container are hingedly connected along a fold line, for example, US Patent US

An example of the disclosure of 2,338,900 (1944/01/11), as described in US Patent No. 3,964,668 (1976/06/22): (..inwardly and outwardly folding lines dividing the surface of the blank In one of the square, six trapezoids and eight triangles....), in these examples, the adjacent two side walls are joined by a pair of triangular jaws, each pair of jaws extending from the edge of the container and meeting at the base The three fold lines of one corner are defined. In the state of use, the joints of the adjacent two side walls are coincident two fold lines, and thus, on the one hand, one side wall can be along the fold line relative to the other When the side wall rotates, it is easy to produce undesired deformation. On the other hand, the adjacent two side walls intersect at an angle, each side wall is kept in a plane state, the shape of the container is square, and the material is not efficiently entangled. .

In the process of storage and transportation, the blanks of the existing containers are usually in the form of a flat sheet having a large thickness, which occupies a large area, which not only consumes a large area of the outer packaging material, but also has high cost and is not convenient for storage and transportation. Blanks. In particular, reusable blanks made of plastic sheets, such as reusable folding bowls and folding trays, usually require separate outer packaging for each blank, even requiring a higher value reusable exterior. Packaging, if a single blank can be folded in half by one fold, reducing the area required for packaging by half, or by reducing the area required for packaging by two folds, the amount of the outer packaging material will be reduced accordingly. However, the blanks of existing containers generally do not have a fold line that bisects the blanks, and therefore cannot be folded in half to reduce the area occupied by them.

Most of the existing containers have fold lines on the boundary line between the base and the side walls. When in use, the side walls can be along

1 Confirmation The fold line rotates relative to the substrate, creating an undesirable deformation. Some existing containers have no fold lines on the boundary line between the base and the side walls. In the state of use, the shape of the base is curved, and the container cannot be placed smoothly.

Existing folding containers generally do not have a handle, and even with a handle, other connecting means are required for fixing, or the purpose of the handle is single, and it is not possible to have a stable container at the same time.

Summary of the invention

The present invention and its preferred embodiments seek to solve or at least alleviate the problems of the prior art.

A first aspect of the invention provides a collapsible container formed from a blank, the blank being constructed from a sheet of foldable sheet material having fold lines extending along the fold line a sheet material capable of deforming the green sheet from a planar state to the container, the container comprising a base and four side walls extending from the base, the side walls being joined by four corners, each The corner portion includes a seesaw and a tab having an inner portion extending into a side wall, an outer portion extending into the adjacent side wall, and a portion between the inner side and the outer side portion a middle portion, the intermediate portion being hinged to the inner portion along a first fold line and hinged to the outer portion along a second fold line, the first and second fold lines extending from an edge of the corner And engaging the substrate at a joint, the tab being hinged to an edge of the inner portion along a third fold line, the tab being inserted into a gap between the intermediate portion and the outer portion, To keep the corners in a folded state

According to an embodiment of the first aspect, the substrate may have a quadrilateral folded wire frame formed by four folding lines in sequence, the area defined by the quadrangular folding wire frame forming a supporting surface of the substrate, and A fourth fold line extending at each corner of the quadrilateral fold wire frame is joined to an adjacent one of the joints to define the base in a three-dimensional shape.

According to another embodiment of the first aspect, the container may further include at least one handle, each of the handles being hinged to the edge of one of the side walls along at least one curved fold line, when the handle is along After the curved fold line is folded and disengaged from the side wall, the side wall is defined in a curved state. Preferably, the container may include two opposing handles, each of which is hinged to an edge of the side wall along a curved fold line. Alternatively, the container may include two opposing handles, each of the handles being hinged to the edge of one of the side walls along two curved fold lines, the two curved fold lines being curved The slits are joined, and the curved cutout forms a tab and a notch when the handle is folded along the curved fold line and is disengaged from the sidewall.

Preferably, according to the first aspect, the container may further have a fold-folding line that divides the container into substantially two-part portions, a portion of which is hinged to the other portion along the fold-folding line, The container In the planar state, the two portions can substantially coincide with each other along the fold line, and the fold line can extend between the midpoints of the edges of the opposite side walls, or The midpoint of the edge of the handle extends between.

A second aspect of the invention provides a blank for forming a collapsible container, the sheet being constructed from a sheet of foldable sheet material having fold lines along which the sheet material is folded, The blank can be deformed from a planar state to the container, the blank comprising a base, four side walls, four slabs and four tabs, each of the slabs extending into a side wall An outer portion extending into an inner portion of the adjacent side wall and an intermediate portion between the inner and outer portions, the intermediate portion being hinged to the inner portion along a first fold line and along a a second fold line hinged to the outer portion, the first and second fold lines extending from an edge of the seesaw and meeting the base at a joint, each of the tabs being along a first A three fold line is hinged to the edge of one of the inner portions.

According to an embodiment of the second aspect, the substrate may have a quadrilateral folded wire frame formed by four folding lines in turn, a fourth folding line extending from each corner of the quadrangular folding wire frame and adjacent One of the joints meets.

According to another embodiment of the second aspect, the blank may further include at least one handle piece, each of the handle pieces being hinged to an edge of the side wall along at least one curved fold line, when After the handle piece is folded along the curved fold line and is disengaged from the side wall, the side wall is defined in a curved state.

Preferably, according to the second aspect, the blank may further have a fold line that divides the blank into substantially two equal parts, a portion of which is hinged to the other along the fold line After the blank is folded along the fold line, the sheet materials on both sides of the fold line can substantially coincide.

Preferably, according to the second aspect, the first and second folding lines are substantially equal in length, and the bisector of the angle between the first and second folding lines is between each of the two sides of the adjacent substrate The angle is 135 degrees.

The collapsible container and the blank thereof using the above technical solution have the beneficial technical effects of: 1. There is no folding line between the corner of the container and the adjacent side wall, and the advantages are as follows: on the one hand, the adjacent two side walls Can not rotate relatively, and the container has a beautiful curved corner, on the other hand, the side walls are in a state of being bent, thereby generating a beneficial tension, making the container more stable, and the container is more efficient than the shape. The existing container; 2, the blank sheet may have a first folding line, the blank sheet can be folded into the double-layer sheet state, so that the area required for packaging is reduced by half, thereby reducing the amount of the outer packaging material, the blank The sheet may also have a second fold-folding line, and the blank sheet can be further folded into the four-layer sheet state, so that the area required for packaging is reduced by three-quarters, to further reduce the amount of the outer packaging material, and the folding fold line can also be Used as a volume indicator line of the container; 3. The base of the container can be defined by the quadrilateral folding wire frame and the fourth folding line into a three-dimensional three-dimensional shape The advantage is that between the base and the side walls of the container The sheet material is in a bent state, which can produce a beneficial tensioning force to make the container more stable, and at the same time, the quadrangular folding line can provide a substantially flat supporting surface, so that the container is not easily dumped, and Stereoscopic, thus increasing the depth of the container when the size of the seesaw is constant, thereby improving the container accommodating efficiency; 4. The container can have a handle, and the handle interacts with the side wall of the container, thereby automatically Maintaining the position in use, and at the same time acting to stabilize the container, particularly in embodiments where the handle is equally divided by the fold-folding line, the handle prevents deformation of the container along the folded-fold line; 5. In a preferred embodiment The first fold line and the adjacent second fold line are substantially equal in length, and the angle between the imaginary bisector of the included angle and each of the two sides of the adjacent substrate is 135 degrees. The advantage is that, on the one hand, the area of the seesaw is relatively small, so that the material can be saved. On the other hand, after folding to the state of use, the curvature of each side wall is substantially the same. When, the container is more stable.

Other benefits or objects of the present invention will become apparent to those skilled in the art after reading the specification. DRAWINGS

Exemplary embodiments of the present invention will now be described, by way of example only, and with reference to the accompanying drawings in which:

Figure 1 is a plan view of a green sheet of a collapsible container according to a first embodiment of the present invention;

Figure 2a is a perspective view of the blank of Figure 1 in an unfolded state;

Figure 2b is a perspective view of the container folded from the blank shown in Figure 1;

Figure 2c is a perspective view of the container of Figure 2b after being inverted, showing the three-dimensional shape and structure of the container base more clearly;

Figure 3a is a plan view of the blank shown in Figure 1 with two fold lines folded in half;

Figure 3b is a plan view of the blank shown in Figure 3a after being folded in half;

Figure 3c is a plan view of the blank shown in Figure 3b after being folded in half;

Figure 3d is a perspective view of the container folded from the blank shown in Figures 3a to 3c;

Figure 4 is a plan view of a green sheet of a collapsible container according to a second embodiment of the present invention;

Figure 5 is a perspective view of the container folded from the blank shown in Figure 4;

Figure 6a is a plan view of the blank shown in Figure 4 after adding a fold line;

Figure 6b is a plan view of the blank shown in Figure 6a after being folded in half;

Figure 6c is a perspective view of the container folded from the blank shown in Figures 6a to 6b;

Figure 7 is a plan view of a green sheet of a collapsible container in accordance with a third embodiment of the present invention; -

Figure 8 is a perspective view of the container folded from the blank shown in Figure 7;

Figure 9 is a developed plan view of a handle according to a fourth embodiment of the present invention;

Figure 10a is a perspective view of the container of Figure 8 and the handle of Figure 9 joined;

Figure 10b is a perspective view of the container of Figure 8 and the handle of Figure 9 joined, showing the three-dimensional shape and structure of the container base, and the interlocking structure of the lock piece of the handle and the slit of the container;

The drawings are not shown to be in a true scale, and thus the invention is not limited to the proportions shown in the drawings.

The meaning of the lines in the attached plan view is as follows:

A single solid line represents a contour line (or a cutting line);

A single dashed line represents a fold line;

The dotted line represents the imaginary line, not the actual processing line. detailed description

Embodiment 1: Referring now to Figure 1, there is shown a blank 10 in an unfolded planar state, which is composed of a sheet of plastic or a similar foldable sheet material, the blank 10 being provided with a score into a sheet A plurality of fold lines of the body, the material being folded along the fold line, enables the green sheet 10 to be deformed from a planar state to the container 90 shown in Figures 2a-c.

The edge of the blank 10 has two opposite sides 20, 30 and two opposite sides 40, 50, the sides being generally four oblique sides 28a to d and four tabs 19a to d The sides of the "U" shape are connected.

A first fold line 16 (a to d) and a second fold line 17 (a to d) extend from both ends of a beveled edge 28 (a to d) to the blank 10, as the case may be. The joints 21 (a to d), the joints 21a to d are positioned such that, when folded into the use state, the area between the joints 21a to d is sufficient to form the base 39 which enables the container to stand on its own. The imaginary connection between the joints 21a to d is an imaginary side of the base 39, and the imaginary sides of the base 39 are sequentially connected in a quadrilateral shape. In this embodiment, the imaginary sides of the base 39 are joined in a square shape, in other implementations. In the example, it may be a rectangle, and the term "imaginary" as used herein means that the sides of the substrate 39 do not actually form a fold line in this embodiment.

The first folding lines 16a to d and a second folding line 17a to d define four jaws 11, 12, 13 and

14. Each of the rafts is substantially similar, and only the first slab 11 will be described in detail herein. The first jaw 11 includes a middle portion 11b, an outer portion 11a and an inner portion llc, the intermediate portion lib being hinged to the inner portion 11c along a first folding line 16a and hinged along a second folding line 17a To the outer portion 11a. The intermediate portion lib can be folded between the inner portion 11c and the outer portion 11a along the first folding line 16a and the second folding line 17a. Similarly, the second jaw 12 includes an intermediate portion 12b, an outer portion 12a and an inner portion 12c. The third jaw 13 includes a middle portion 13b, an outer portion 13a and an inner portion 13c, and the fourth jaw 14 An intermediate portion 14b, an outer portion 14a and an inner portion 14c are included.

The first folding lines 16a to d and the second folding lines 17a to d further define: a first side wall 22 extending between the first jaw 11 and the second jaw 12, at the second jaw 12 a second side wall 55 extending between the third jaw 13 and the third side panel 13 and a third side wall 33 extending between the third jaw 13 and the fourth jaw 14 in the fourth jaw 14 and the first side A fourth side wall 44 extends between the plates 11, and the term "extending" as used herein means that no fold lines are actually formed between the portions.

The green sheet 10 includes four tabs 19a to d, each of which is substantially similar and is denoted by the same reference numeral plus a different letter, and only the first tab 19a will be described in detail herein. The first tab 19a is hinged to the edge of the inner portion 11c of the first raft 11 along a third fold line 15a. In this embodiment, the first tab 19a further has a fifth fold line 36a, fifth. The folding line 36a is parallel to the third folding line 15a and spaced apart by an appropriate distance so that the first tab 19a can be conveniently folded in half with the inner portion 11c. Similarly, the second tab 19b is hinged to the edge of the inner portion 12c of the second jaw 12 along a third fold line 15b and has a fifth fold line 36b; the third tab 19c is along a third The folding line 15c is hinged to the edge of the inner portion 13c of the third jaw 13 and has a fifth folding line 36c; the fourth tab 19d is hinged to the fourth jaw 14 along a third folding line 15d. The inner portion 14c is on the edge and has a fifth fold line 36d.

The jaws 11, 12, 13 and 14 and the adjacent tabs 19a to d can be folded into the corners 20a to d of the container 90 (please refer to Figs. 2a and 2b), wherein the first jaw 11 Forming a first corner portion 20a with the first tab 19a, the second jaw portion 12b and the second tab portion 19b forming a second corner portion 20b, and the third jaw plate 13 and the third tab 19c forming a third corner portion 20c, fourth The seesaw 14 and the fourth tab 19d form a fourth corner 20d.

In this embodiment, the base 39 has a quadrangular folded wire frame formed by four fold lines 26a to d which are sequentially joined, and a fourth folding line 18 is extended from each of the joints 21 (a to d) ( a to d) to an adjacent corner 93 (a to d) of the quadrilateral folding wire frame. The base 39 includes a support surface 92 and four slopes 95a to d, wherein the area defined by the quadrilateral folding wire frame forms the support surface 92, and the four slopes 95a to d include a first slope 95a, The second inclined surface 95b, the third inclined surface 95c, and the fourth inclined surface 95d are each substantially similar. Here, only the first inclined surface 95a is described in detail, and the first inclined surface 95a is along the folding line 26a and the supporting surface.

92 hinged, hinged to the second inclined surface 95b along a fourth folding line 18b, along the other fourth folding line 18a and the fourth inclined surface 95d is hinged, and the first inclined surface 95a is integrally connected with the first side wall 22, and when folded into a use state, the surfaces are not coplanar, and the base 39 is three-dimensional, the advantages of which will be described later.

In the present embodiment, preferably, the first folding lines 16a to d and the adjacent second folding lines 17a to d are equal in length, and their imaginary bisectors of the included angles and the two imaginary sides of the adjacent substrate 39 are The angle between each side is 135 degrees, which has the following advantages: On the one hand, the area of the seesaw is relatively small, so that the material can be saved. On the other hand, after folding to the state of use, the curvature of each side wall is substantially Quite, the container is more stable.

The method of folding the green sheet 10 from the flat state to the container 90 in the use state is: Referring to Fig. 2a, the four corner portions 20a to d shown therein are in different folded states, respectively, due to the corner portions 20a to d. The folding method of each of them is basically the same, and only the folding method of the first corner portion 20a will be described in detail herein. The first folding line 16a is folded inwardly, and the second folding line 17a is folded outward (relative to the inside of the container) such that the intermediate portion lib of the first jaw 11 faces the outside of the container, and the outer portion 11a is in the middle The outer side of the portion lib, the inner portion 11c is located inside the intermediate portion lib, so that the first seesaw 11 enters the folded state, and then the first tab 19a is stuffed between the intermediate portion lib and the outer portion 11a to The first corner portion 20a is held in a folded state. The other three corner portions 20b to d are folded in the same manner, and the folding is carried out. Referring to Fig. 2b, the side walls 22, 33, 44 and 55 are automatically stood on the periphery of the base 39, so that they can be used. State container 90.

Notably, in the present embodiment, the substrate 39 formed by the regions between the joints 21a to d is three-dimensional, please refer to FIG. 2c, which is a perspective view of the container 90 shown in FIG. 2b after being inverted. The three-dimensional shape and structure of the substrate 39 are more clearly shown. It can be seen that the base 39 is defined by the quadrangular folding wire frame and the fourth folding lines 18a to d in a three-dimensional three-dimensional shape, the five faces including a supporting surface 92 and four inclined faces 95a to d, the faces are not coplanar, which has the advantage that, on the one hand, the sheet material between the substrate 39 and the side walls is in a bent state, thereby generating a beneficial tensioning force to make the container more stable, on the other hand, The quadrilateral folding wire frame provides a substantially flat support surface 92, the container is not easily dumped, and since the base 39 is three-dimensional, in the case where the sizes of the jaws 11, 12, 13 and 14 are constant, The depth of the container is increased, thereby increasing the efficiency of container accommodation. In other embodiments, the substrate 39 may not have the quadrangular folding wire frame and the fourth folding line. The shape of the substrate is a naturally formed curved shape, or the folding lines are sequentially arranged between the joints 21a to d. Connect to flatten the substrate 39 between them.

In order to reduce the amount of packaging material required for packaging the blank 10 and to facilitate storage and transportation of the blank, the blank 10 may further have one or two folded fold lines, and the green sheet 10 is equally divided into two parts by each of the folded fold lines. One of the portions is hinged to the other portion along the fold line, for example, the blank 10 shown in Figure 3a further includes a first pair of folds 2008/000252 Stacking line 45 and a second folding fold line 46. The first folded fold line 45 extends between the midpoints of the two opposing sides 20 and 30 of the blank 10, and the second folded fold line 46 extends between the midpoints of the other two opposing sides 40 and 50. . Referring to FIG. 3b, after the green sheet 10 is folded along the first folding line 45, the sheet materials on both sides of the folding line can substantially overlap to form a double-layer sheet, wherein the area of each layer is a blank. For half of the area 10, referring to FIG. 3c, the double-layer sheet may be further folded along the second folding line 46 to form a four-layer sheet, wherein the area of each layer is four quarters of the area of the sheet 10. One. Referring to Figure 3d, which shows a perspective view of the container 90 folded from the blank 10 shown in Figures 3a to 3c, it can be seen that since the base 39 of the container is three-dimensional, the side walls 22, 33, 44, 55 This acts as a constraint so that the container does not easily deform along the fold line 45, 46. Embodiment 2: Referring now to Figure 4, there is shown a green sheet 110 in an unfolded planar state, the green sheet 110 being substantially identical to the corresponding portion of the green sheet 10 of the first embodiment shown in Figure 1 And the same reference numerals are used to indicate corresponding parts, and therefore, only the differences will be described in detail.

The blank 110 differs from the blank 10 shown in Figure 1 in that the blank 110 further includes two opposing handle pieces 60a and 60b so as to be foldable into a container 190 with a handle (see Figure 5). In the present embodiment, the first handle piece 60a protrudes outward from the edge of the first side wall 22 and is hinged to the edge of the first side wall 22 along a curved fold line 91a, the first handle piece 60a having a curved edge a meniscus, two ends of the curved edge respectively coincide with both ends of the curved fold line 91a; the second handle piece 60b protrudes outward from the edge of the third side wall 33 and along another curved fold line 91b is hinged to the edge of the third side wall 33, and the second handle piece 60b has a meniscus shape having a curved edge, and both ends of the curved edge coincide with both ends of the curved fold line 91b, respectively. In other embodiments, the handle blade can be other suitable shapes.

The description of the method of folding the blank 110 into the container 190 is substantially the same as the description of the corresponding method in the container 90 shown in FIG. 2a, and only the differences therein will be described. Referring to FIG. 5, in order to form the handle, The first handle piece 60a is folded toward the outside of the container along the curved fold line 91a (relative to the inside of the container). Once the first handle piece 60a is disengaged from the first side wall 22, the first handle piece 60a can be automatically The handle is folded to the outside of the container to form the handle, notably: due to the restriction of the first handle piece 60a, the first side wall 22 is defined as a curved shape along the curved fold line 91a, which makes the container more stable, and Due to the restriction of the first side wall 22, the first handle piece 60a is defined as a curved shape along the curved fold line 91a, and is prevented from being arbitrarily rotated along the curved fold line 91a, thereby being substantially maintained in a relatively fixed position. . Similarly, the second handle piece 60b is folded toward the outside of the container along the curved fold line 91b to be disengaged from the third side wall 33 to form the other handle. In order to reduce the amount of packaging material required for packaging the blank 110 and to facilitate the storage of the green sheet 110, the green sheet 110 may further have a fold-folding line, and the green sheet 110 is divided into two parts by the folding line, some of which are The folded fold line is hinged to another portion, such as the blank 110 illustrated in Figure 6a, which also includes a split fold line 47 between the midpoints of the edges of the two opposing handle strips 60a and 60b. extend. Referring to FIG. 6b, after the green sheet 110 is folded along the folding line 47, the sheet materials on both sides of the folding line can substantially overlap to form a double-layer sheet, wherein the area of each layer of the sheet is the blank 110. Half of the area, and a noteworthy beneficial technical effect is: Referring to Figure 6c, after folding the blank 110 into the container 190, since the first handle piece 60a and the adjacent first side wall 22 are not coplanar, and can be mutually constrained The second handle piece 60b and the adjacent second side wall 33 are not coplanar and can be mutually restrained, so that the container 190 does not deform along the fold line 47. Embodiment 3: Referring now to Figure 7, there is shown a green sheet 210 in an unfolded planar state, the green sheet 210 being substantially identical to the corresponding portion of the green sheet 10 of the first embodiment shown in Figure 1 And the same reference numerals are used to indicate corresponding parts, and therefore, only the differences will be described in detail.

The main difference between the blank 210 and the blank 10 shown in Figure 1 is that the blank 210 further includes two opposing handle pieces 70a and 70b, each of which is substantially similar and has the same reference number. With the addition of different letters, only the first handle piece 70a will be described in detail herein. The first handle piece 70a is hinged to the edge of the first side wall 22 along the two curved fold lines 71a and 72a, and the adjacent ends of the two curved fold lines 71a and 72a are joined by a curved cutout 73a. The curved slit 73a protrudes outward from the edge of the first side wall 22, thereby forming a tab 74a which allows the first handle piece 70a to be more easily folded. The advantage of the tab 74a is: Forming a beneficial barrier between the thumb portion of the user and the interior of the container, such that the user can hold the container smoothly, and the tab 74a acts as a heat insulator when the hot material is contained, and also has The user's hand is prevented from coming into contact with the contents. On the other hand, in other embodiments equipped with a handle, the tab 74a can be opposed to the handle's lifting beam, so that the lifting beam is always maintained at a relatively fixed position. This aspect will be described in detail in Embodiment 4.

Another difference between the blank sheet 210 green sheet 10 shown in Figure 1 and wherein: each of the joint 21 (a to d) also have a short curved fold line ₂ 4 (a to d), the The short folding lines 24a to d function to reduce material deformation and guide folding of the joints 21a to d, and are preferably provided at a position where the material is largely deformed. In the present embodiment, the short folding line 24a To d extend from the joint 21a to d toward one side of the inner portion, and in other embodiments, each of the joints 21 to d) may have a plurality of similar short fold lines. The description of the method of folding the blank 210 into the container 290 is substantially the same as the description of the corresponding method of the container 90 shown in Fig. 2a, and only the differences therein will be described. Referring to Fig. 8, in order to form the handle, The first handle piece 70a is folded toward the outside of the container along the two curved fold lines 71a and 72a (relative to the inside of the container) so as to be disengaged from the first side wall 22 to form a handle. Similarly, the second handle 70b folded sheet along two curved folding lines 71b and 72b to the outside of the container, so that the third side wall 33 disengaged coplanar relationship, said handle forming another _ά Example IV: Referring now to Figure 9, there is shown a handle 80 in an unfolded, planar state comprised of a sheet of plastic or similar foldable sheet material, which handle 80 can be as described in Example 3. The container 290 is joined. Referring to Figures 10a and 10b, there is shown a container with a handle formed by the collapsible container 290 of Figure 8 and the handle 80 of Figure 9 being joined.

In this embodiment, the handle 80 includes a strip yoke 81 and two locking pieces 82a and 82b, and the two locking pieces 82a and 82b are hinged to the opposite end sides 87a of the girders 81 along the folding lines 86a and 86b, respectively. On 87b.

Each of the two locking tabs 82a and 82b is substantially similar and is illustrated by the same reference numeral plus a different letter, only the first locking tab 82a is described in detail herein, the first locking tab 82a includes a body portion 85a and two anchor pieces 83a, and 84a, the two anchor pieces 83a and 84a are respectively hinged to the both side edges of the main body portion 85a along the folding line E, wherein the width X between the both sides of the locking piece main body portion 85a is not more than The width V of the slits 73a, b in the third embodiment, the sum of the width X of the both sides of the locking piece main portion 85a and the width Y of the both sides of the anchor piece are larger than the width V of the slit, so When the main body portion 85a and the two adjacent anchor pieces 83a and 84a are folded in the folded line E, they may be inserted into one of the slits 73a, and then the two anchor pieces 83a and 84a are unfolded. A locking piece 82a is effectively locked in the slit 73a (please refer to Figs. 10a and 10b). It is foreseen that in other embodiments, the structure or shape of the locking tabs 82a, b may be other suitable structures or shapes.

The width W of each of the both end edges 87a and 87b of the girders 81 is preferably larger than the width V of the slit so that the girders 81 cannot be inserted into the slits 73a, b so as to be held above the container 290.

In this embodiment, the tabs 74a, b can abut the ends of the beam 81 to support the beam 81 so that it does not contact the contents of the container and provides more space for the user's hand.

Referring to Figure 10b, the three-dimensional shape and configuration of the base 39 of the container 290 is clearly shown, and the structure in which the first locking piece 82a and the slit 73a are interlocked is clearly shown.

In order to facilitate the user to lift the container, in this embodiment, the edge of the lifting beam 81 is wavy and can be foreseen in In its embodiment, the shape of the girders 81 may be other suitable shapes. It should be understood that the directional reference words used herein, such as "upper", "end", "side", "inner", "outer", "oblique", etc., do not limit each of the plates or faces. In these orientations, but only to separate the plates or faces from each other; any reference to an articulated connection should not be understood as necessarily referring to only a single fold line, in fact, it is conceivable that it does not deviate from the invention. In the case of a range, the articulated connection may be formed by one or more of the following: a single-sided score line, a double-sided score line, a fold line, a weakened line or a soft line, etc. Within the scope of the invention; depending on the specific production needs, the two fold lines at one joint or the fold lines and contours at a joint can be machined to intersect at a joint, or It is processed to stop where it will meet, i.e., does not really intersect, without departing from the scope of the invention; the front and back sides of the blank are interchangeable and only need to be folded back. Some of the embodiments of the present invention are enumerated above, and it is to be understood that a collapsible container comprising the components of the present invention or various reasonable combinations according to the present specification is also within the scope of the present invention.

Claims

Rights request

What is claimed is: 1. A collapsible container formed from a blank, the blank being comprised of a foldable sheet material having a fold line along which the sheet material is folded The blank is deformed from a planar state to the container, the container being characterized in that the container comprises a base and four side walls extending from the base, the side walls being joined by four corners, each A corner portion includes a seesaw and a tab having an inner portion extending into a side wall, an outer portion extending into the adjacent side wall, and between the inner and outer portions An intermediate portion hinged to the inner portion along a first fold line and hinged to the outer portion along a second fold line, the first and second fold lines from the edge of the corner Extending and meeting the substrate at a joint, the tab being hinged to an edge of the inner portion along a third fold line, the tab being inserted into the gap between the intermediate portion and the outer portion To keep the corners in a folded state

2. The collapsible container of claim 1 wherein said base has a quadrilateral folded wire frame formed by four fold lines in sequence, the area defined by said quadrilateral folded wire frame forming said base support surface, and in contact with the pair of adjacent junction from a fourth fold line extending in each corner of the quadrangular frame is folded, ^to: the substrate having a three-dimensional shape defined to five sides.

3. The collapsible container of claim 1 wherein said container further comprises at least one handle, each of said handles being hinged to an edge of said side wall along at least one curved fold line After the handle is folded along the curved fold line and is disengaged from the side wall, the side wall is defined in a curved state.

4. A collapsible container according to claim 3 wherein said container includes two opposing handles, each of said handles being hinged to an edge of said side wall along a curved fold line .

5. A collapsible container according to any one of claims 1 to 4 wherein said container further has a fold-folding line which divides said container into substantially equal two A portion, a portion of which is hinged to the other portion along the fold-folding line, the two portions being substantially coincident when folded in a folded state along the fold-folding line.

6. A blank for forming a collapsible container, the sheet being constructed from a sheet of foldable sheet material having fold lines along which the sheet material is folded to enable the sheet Deformed from a planar state to the container, the blank is characterized in that: the blank comprises a base, four side walls, four slabs and four tabs, each of the slabs extending into a An outer portion of the side wall, an inner portion extending into the adjacent side wall, and an intermediate portion between the inner and outer portions, the intermediate portion being hinged to the inner portion along a first fold line and Hinged to the outer portion along a second fold line extending from the edge of the seesaw and meeting the base at a joint, each of the tabs A third fold line is hinged to the edge of one of the inner portions.

7. The green sheet according to claim 6, wherein the base has a quadrangular folded wire frame formed by four folding lines in sequence, and a fourth folding extending from each corner of the rectangular folding wire frame. The line is in contact with an adjacent one of the joints.

8. The blank of claim 6 wherein said blank further comprises at least one handle piece, each of said handle pieces being hinged to an edge of said side wall along at least one curved fold line After the handle piece is folded along the curved fold line and is disengaged from the side wall, the side wall is defined in a curved state.

9. A blank according to any one of claims 6 to 8 wherein: the blank further has a fold-folding line that divides the blank into substantially equal Two portions, one of which is hinged to the other portion along the fold line, the sheet material on both sides of the pair of fold lines being substantially coincident after the blank is folded along the fold line.

The green sheet according to any one of claims 6 to 8, wherein: the first and second folding lines are substantially equal in length, and the angle between the first and second folding lines is equally divided The angle between the line and each of the two sides of the adjacent substrate is 135 degrees.