JPH0211282Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a folding cardboard box.

(Prior art) A conventional folding cardboard box is made by first bending the integrally connected front, back, left and right side component pieces at right angles in the lateral direction, and then connecting and fixing the corresponding pieces to form a rectangular frame. , the bottom was formed by folding and fixing sleeve pieces that were bendably connected to the lower end of each component, in other words, it was not a one-piece bottom plate, so the strength of the bottom was not high enough. It was not possible to carry heavy objects on board.

(Technical issue) As mentioned above, it was not possible to place very heavy objects on the conventional structure, so by devising a single piece of punched fabric, we developed a transportable box with sufficient strength at the bottom. Its appearance was awaited.

(Means for solving the problem) Two vertical fold lines A and B are provided at positions that leave the rising height of the left and right side walls 3 and 4 from both sides, and the front and rear walls 5 of the same height are also provided. , 6 in the front and rear directions, and the rectangular space surrounded by each of the above-mentioned fold lines A to D is the bottom plate part 2, and from the fold lines A and B. In the square portion formed in the front-rear direction with the fold lines C and D of the left and right side walls 3 and 4 on the outside as boundaries, each fold line A to D is drawn from each corner of the horizontally long rectangular punched fabric body 1. Provide diagonal fold lines E, FG, and H connecting to the intersections S, TX, and Y, and the diagonal fold lines E, FG,
In the fixed triangular part 14 between H and the fold lines A and B, deep convex notches 9a to 9d facing in the vertical direction are formed, and shallow convex cutouts 9a to 9d are formed at symmetrical positions across the fold lines A and B. 10a to 10d are formed correspondingly, and fixed strips 11 are connected to both ends of each of the left and right side walls 3 and 4 through fold lines J and K, and extensions of fold lines C and D are provided on the strips. Broken lines Ca, Cb.Da, Db on the line
A horizontally long rectangular punched fabric body 1 having a downwardly bent portion 12 at the front and rear thereof, and a dovetail convex portion 13 integrally formed at the tip of each bent portion 12.
, the left and right side walls 3 and 4 are folded in with fold lines A and B as boundaries, and the fixing triangular part 14 is fixed with adhesive to form stepped bag fixing parts 8a to 8d. It is.

FIG. 5 shows another embodiment that shares the essential structural requirements of the above embodiment. To explain only the different parts in terms of structure, the fixings connected to both ends of the left and right side walls 3 and 4 are shown in FIG. In the strip 11, the fold line Ca,
The length of the lower bent portion 12 provided in the front and back direction of Da is formed to be the same as the height of the front and rear walls 5 and 6, and the fixed portion 16 that receives the dovetail convex portion 13 is formed on the broken lines C and D.
formed on top. The fixing part 16 has the same technical idea as the bag fixing parts 8a to 8d in the above-described embodiment, and is illustrated as a mere design change.

(Example) To explain according to the developed view in FIG. 1 of a horizontally long rectangular punched fabric body 1 made of corrugated cardboard, left and right side walls 3 and 4 are formed so that the center part is the bottom plate part 2.
2 in the vertical direction at a position leaving the rising height of
In addition to providing book fold lines A and B, two horizontal fold lines C and D are provided at positions that leave the standing height of the front and rear walls 5 and 6 of the same height in the front and back direction, and each of the above fold lines The rectangular space surrounded by A to D is the bottom plate part.

From each corner of the horizontally long rectangular punched fabric body 1 in a square space formed in the front-rear direction with the fold lines C and D as boundaries on the left and right side walls 3 and 4 located outward from the fold lines A and B. Intersection S of each broken line A to D,
Diagonal fold lines E, FG, and H connecting to TX and Y are provided. Then, between the diagonal fold lines E, FG, and H and the fold lines A and B, deep convex notches 9a to 9d facing the front-rear direction are formed, and shallow convex cutouts 9a to 9d are formed at symmetrical positions across the fold lines A and B. Letter-shaped notches 10a to 10
d are correspondingly formed. Reference numeral 11 denotes a fixed strip, in which fold lines C and D are integrally connected to both ends of the left and right side walls 3 and 4 through fold lines J and K, and on the extension line of the fold lines C and D, Broken line Ca, Cb.Da,
Db is formed, and downward bent portions 12 are formed at the front and back of the Db, respectively.
Further, dovetail-shaped convex portions 13 are integrally formed at the tips of the bent portions 12, respectively.

Next, the left and right side walls 3 and 4 are folded inward along the fold lines A and B, respectively, and the fixed triangular portion 14 surrounded by the diagonal fold lines E to H in the square space 7 and the fold lines A and B is fixed with adhesive. , the deep convex notches 9a to 9d and the shallow convex notches 10a to 1.
0d to form stepped bag fixing parts 8a to 8d.

FIG. 5 shows another embodiment that shares the essential structural requirements of the above embodiment. To explain only the different parts in terms of structure, the fixings connected to both ends of the left and right side walls 3 and 4 are shown in FIG. In the strip 11, the fold line Ca,
The length of the lower bent portion 12 provided in the front and back direction of Da is formed to be the same as the height of the front and rear walls 5 and 6, and the fixed portion 16 that receives the dovetail convex portion 13 is formed on the broken lines C and D.
formed on top. The fixing part 16 has the same technical idea as the bag fixing parts 8a to 8d in the above-described embodiment, and is illustrated as a mere design change.

(Function) From the above configuration, the front and rear walls 5 and 6 are connected to the broken lines C and D.
When you stand up and move in the corresponding direction, the broken lines E to H
Folded triangular part 1 in square part 7 bordering on
5 is joined to the fixed triangular portion 14, and the basic posture of the carrying box with an upward opening is established as shown in FIG.

Next, fold lines J,
Stepped bag fixing in which the fixing strips 11 connected in series with K are horizontally bent, the downward bent portions 12 of both ends are folded, and the dovetail-shaped convex portions 13 of the strips are formed on the front and rear walls 5 and 6. When the parts 8a to 8d are fitted and fixed, the fixing situation shown in FIG. 4 is obtained.

(Effect) The present invention provides two vertical fold lines A and B at positions that leave the rising height of the left and right side walls 3 and 4 from both sides, and also provides front and rear walls 5 and 6 of the same height.
Two horizontal fold lines C and D are provided at positions that leave the rising height of 1 in the front and rear directions, and the rectangular space surrounded by the above-mentioned fold lines A to D is the bottom plate part 2, so that the overall structure of the box and Since the bottom plate part 2 is integrated with the bottom plate part 2, it has extremely high load resistance against the weight of the cargo carried on board. In the square part formed in the front-rear direction with the border as the boundary, diagonal fold lines E, F are drawn from each corner of the horizontally long rectangular punched fabric 1 to the intersections S, TX, Y of the fold lines A to D.
G, H are provided, and the diagonal fold lines E, FG, H and the fold lines A,
Since the fixed triangular portion 14 is provided between B, the left and right side walls 3 and 4, which are in the horizontally bent position, rise in conjunction with the rise of the front and rear walls 5 and 6 in corresponding directions. Therefore, changing from the folded state to the box configuration can be done in one motion.

Furthermore, fixing strips 11 are connected to both ends of the left and right side walls 3 and 4 through fold lines J and K, and the strips have fold lines Ca, Cb.Da, and Cb.Da on extension lines of fold lines C and D, respectively. Db
The front and rear sides thereof are formed with downward bent portions 12, and dovetail-shaped convex portions 13 are integrally formed at the tips of the bent portions 12, so that the front and rear walls 5, 6
By providing a fixing portion for receiving the dovetail convex portion 13 at an appropriate position, the assembled box body can be fixed and released freely.

Furthermore, as shown in the development diagram in Figure 1, it can be easily mass-produced from a simple punched sheet of cardboard material 1, so production costs can be kept low. It is.

[Brief explanation of the drawing]

Figure 1 is a developed view, Figure 2 is a plan view with the left and right side walls 3 and 4 folded in the corresponding direction, and Figure 3 is a
A plan view of the front and rear walls 5 and 6 in the state shown in the figure, FIG. 4 is a sectional view taken along line A--A in FIG. 3, and FIG. 5 is a main part showing another embodiment. FIG. 1...Punched fabric body, 2...Bottom plate part, 3, 4
...Left and right side walls, 5, 6... Front/rear wall, 7... Square part, 8a-8d... Stepped bag fixing part, 9a-
9d...Deep convex notch, 10a-10d...
Shallow convex cutout, 11... Fixing strip, 12...
Lower bent part, 13... Dovetail convex part, 14... Fixed triangular part, 15... Folded triangular part, 16... Fixed part.

Claims (1)

[Scope of utility model registration request] Two vertical fold lines A and B are provided at positions that leave the rising height of the left and right side walls 3 and 4 from both sides, and the rising heights of the front and rear walls 5 and 6, which are also the same height, are set in the front and rear direction. Two horizontal fold lines C and D are provided at the remaining positions, and a rectangular space surrounded by the above-mentioned fold lines A to D is defined as the bottom plate part 2, and left and right side walls 3 and 4 located outward from the fold lines A and B are formed. In the square part formed in the front-rear direction with the fold lines C and D as boundaries in the piece, from each corner of the horizontally long rectangular punched fabric body 1 to the intersections S, TX, and Y of each fold line A to D. Provide diagonal fold lines E, FG, H that connect the diagonal fold lines E, FG,
In the fixed triangular portion 14 between H and the fold lines A and B, deep convex notches 9a to 9d facing in the front-rear direction are formed, and shallow convex cutouts 9a to 9d are formed at symmetrical positions across the fold lines A and B. 10a to 10d are formed correspondingly, and fixed strips 11 are connected to both ends of the left and right side walls 3 and 4 through fold lines J and K, and the strips have extensions of fold lines C and D. Broken lines Ca, Cb.Da, Db on the line
A horizontally long rectangular punched fabric body 1 having a downwardly bent portion 12 at the front and rear thereof, and a dovetail convex portion 13 integrally formed at the tip of each bent portion 12.
A corrugated board characterized in that the left and right side walls 3 and 4 are folded in with fold lines A and B as boundaries, and the fixing triangular part 14 is fixed with adhesive to form stepped bag fixing parts 8a to 8d. A folding box.