JP3813076B2 - Folding box - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a folding box.
[0002]
[Prior art]
In the conventional folding box 1, as shown in FIG. 7, when the frame 2 is lifted upward, the third side wall 3 and the fourth side wall 4 rise up in conjunction with this, and the third side wall 3 and the fourth side wall 4 rise. When the side wall 4 rises vertically, the first side wall 5 and the second side wall 6 rotate and fall under their own weight, and the box can be used.
The third side wall 3 and the fourth side wall 4 have a vertically divided structure, and are composed of an upper side wall 7 and a lower side wall 8. The upper side wall 7 and the lower side wall 8 are connected so as to be foldable. In order to improve the strength, the lower end portion of the upper side wall 7 and the upper end portion of the lower side wall 8 are provided with flange portions 9 on the outer side or the inner side of the box (in the illustrated example, The case where the flange part 9 is provided inside the box is shown).
[0003]
[Problems to be solved by the invention]
However, the conventional folding box 1 has the following problems.
(1) When the flange portion 9 is provided outside the box, the flange portion 9 is visible from the outside of the box 1 and the appearance of the box is poor.
{Circle around (2)} When the flange portion 9 is provided on the inner side of the box When the stored item (for example, a shopping bag) is put into the box 1 or taken out from the box 1, the stored item is easily damaged.
An object of the present invention is to provide a foldable box that has a good-looking box and can prevent damage to stored items.
[0004]
[Means for Solving the Problems]
(1) A frame having four sides, a quadrilateral tray positioned below the frame, and first to fourth side walls positioned between the frame and the tray,
The first side wall and the second side wall are pivotally connected to opposite two sides of the frame at the upper end, and the lower end is not connected to the tray,
The third side wall and the fourth side wall are divided into an upper side wall and a lower side wall, respectively.
The upper ends of the upper side walls of the third and fourth side walls are connected to the remaining two opposite sides of the frame so as to be rotatable in a direction perpendicular to the direction of rotation of the first and second side walls. 3, the lower end of the lower side wall of the fourth side wall is connected to the two opposite edges of the tray so as to be rotatable in a direction perpendicular to the direction of rotation of the first and second side walls. The lower end portion of the upper side wall of the fourth side wall and the upper end portion of the lower side wall of the third and fourth side walls are rotatably connected in a direction orthogonal to the turning direction of the first and second side walls. In addition, an R-shaped portion is formed at each of the lower end portion of the upper side wall and the upper end portion of the lower side wall, and the R-shaped portion forms an arcuate portion that protrudes inside the box by abutting with each other when the box is assembled. To
Foldable box.
(2) The foldable box according to (1), wherein a convex portion is provided on one of a pair of R-shaped portions facing each other when the box is assembled, and a concave portion is provided on the other.
[0005]
In the foldable box of the above (1) or (2), the following actions can be obtained.
(1) Since the cross-section arc part is provided inside the box, the cross-section arc part is not visible from the outside of the box, and the box looks good.
{Circle around (2)} Since the shape is R, the stored item is not caught on the arc of the cross section, and the stored item is not damaged.
In the foldable box of (2) above, since the convex portion and the concave portion are provided, the side wall of the box is more resistant to lateral loads from the inside and outside of the box than when the convex portion and the concave portion are not provided. And strong.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
As shown in FIG. 1, a folding box with a partition plate (hereinafter simply referred to as a box) 10 according to an embodiment of the present invention includes a frame 20, a tray 30, a first side wall 40, a second side wall 50, It consists of a third side wall 60, a fourth side wall 70, and an R-shaped portion 80.
[0007]
The frame 20 is disposed at the upper end of the box 10 and forms an opening of the box 10. The frame 20 has four sides. As shown in FIG. 2, the frame 20 includes an outer wall 21, an inner wall 22, and an upper wall 23.
The outer wall 21 and the inner wall 22 are provided over the entire circumference of the box 10. The outer side wall 21 and the inner side wall 22 are provided in parallel to each other.
The inner wall 22 is provided on the inner peripheral side from the outer wall 21.
The upper wall 23 connects the upper end of the outer wall 21 and the upper end of the inner wall 22 over the entire circumference of the box 10.
[0008]
The tray 30 is located below the frame 20. The tray 30 has a quadrilateral shape. The tray 30 includes a bottom wall portion 31 and a rising portion 32.
The bottom wall portion 31 is a bottom wall of the box 10.
The rising portion 32 rises a predetermined distance upward from the outer peripheral end of the bottom wall portion 31.
[0009]
The first side wall 40 is one side wall of the box 10 as shown in FIG. The first side wall 40 is rotatably connected to the frame 20 at the upper end. The lower end portion of the first side wall 40 is not connected to the tray 30.
[0010]
The second side wall 50 is one side wall of the box 10. The second side wall 50 is rotatably connected to the frame 20 at the upper end. The second side wall 50 is connected to the side facing the side to which the first side wall 40 is connected among the four sides of the frame 20. The axis of the second side wall 50 and the axis of the first side wall 40 extend in the same direction. The lower end portion of the second side wall 50 is not connected to the tray 30.
[0011]
The third side wall 60 is one side wall of the box 10. The third side wall 60 contacts the first side wall 40 and the second side wall 50 on the inner surface of the box 10 when the box 10 is in the assembled state (when the box 10 is in a usable state). . The third side wall 60 includes an upper side wall 61 and a lower side wall 62.
[0012]
The upper end portion of the upper side wall 61 is connected to one side of two sides different from the two sides to which the first and second boxes 40 and 50 are connected among the four sides of the frame 20. The upper end portion of the upper side wall 61 is connected to the frame 20 so as to be rotatable in a direction orthogonal to the rotation direction of the first side wall 40 and the second side wall 50. The lower end portion of the upper side wall 61 and the upper end portion of the lower side wall 62 are coupled so as to be able to bend (turn) in a direction orthogonal to the turning direction of the first side wall 40 and the second side wall 50. The connection between the upper side wall 61 and the frame 20 and the connection between the upper side wall 61 and the lower side wall 62 are hinge connections. A lower end portion of the lower side wall 62 is connected to one edge portion 30 a of the quadrilateral tray 30. The lower end portion of the lower side wall 62 is connected to the tray 30 so as to be rotatable in a direction orthogonal to the rotation direction of the first side wall 40 and the second side wall 50.
A rotational connection structure between the lower end portion of the lower side wall 62 and the tray 30 will be described with reference to FIG.
The pivot coupling structure includes a pair of ears 62a provided at each end of the lower wall 62 in the pivot axis direction on the lower surface of the lower wall 62, a rod 62b inserted between the pair of ears 62a, and a tray. The pressing member 32 a protrudes from the rising portion 32 of the box 30 to the inside of the box 10 and presses the rod 62 b from above, and the vertical wall 31 a protrudes upward from the bottom wall portion 31 of the tray 30.
The lower end of the ear part 62 a is in contact with the upper surface of the bottom wall part 31. The vertical wall 31a extends in the same direction as the rotational axis direction of the lower side wall 62, and the pair of ear portions 62a are cut out, but the other portions are provided continuously. The lower side wall 62 is rotatable between D and E in FIG. 6 around the rod 62b. Since the vertical wall 31a is provided, dust or the like is less likely to enter the rotational connection portion between the lower end portion of the lower side wall 62 and the tray 30, and the appearance is good.
[0013]
The fourth side wall 70 is one side wall of the box 10 as shown in FIG. When the box 10 is in an assembled state, the fourth side wall 70 contacts the first side wall 40 and the second side wall 50 on the surface facing the third side wall 60 side. The fourth side wall 70 includes an upper side wall 71 and a lower side wall 72.
[0014]
The upper end portion of the upper side wall 71 is connected to the side opposite to the side to which the upper end portion of the upper side wall 61 of the third side wall 60 is connected among the four sides of the frame 20. An upper end portion of the upper side wall 71 is connected to the frame 20 so as to be rotatable in a direction orthogonal to the rotation direction of the first side wall 40 and the second side wall 50. The lower end portion of the upper side wall 71 and the upper end portion of the lower side wall 72 are coupled so as to be able to bend (turn) in a direction orthogonal to the turning direction of the first side wall 40 and the second side wall 50. The connection between the upper side wall 71 and the frame 20 and the connection between the upper side wall 71 and the lower side wall 72 are hinge connections. A lower end portion of the lower side wall 72 is connected to an edge portion 30 b facing the one edge portion 30 a among the edge portions of the tray 30. A lower end portion of the lower side wall 72 is connected to the tray 30 so as to be rotatable in a direction orthogonal to the rotation direction of the first side wall 40 and the second side wall 50. The rotating connection structure between the lower end portion of the lower side wall 72 and the tray 30 is the same as the rotating connection structure between the lower end portion of the lower side wall 62 of the third side wall 60 and the tray 30 described above. The detailed description is omitted.
[0015]
As shown in FIG. 2, the R-shaped portion 80 is connected to a connecting portion between the upper side wall 61 and the lower side wall 62 of the third side wall 60 and a connecting portion between the upper side wall 71 and the lower side wall 72 of the fourth side wall 70. , Each is formed. The R-shaped part formed on the third side wall 60 and the R-shaped part formed on the fourth side wall 70 pass through the center of the box 10 and are parallel to the in-plane directions of the third and fourth side walls 60, 70. It is symmetric with respect to a simple surface.
The R-shaped portion 80 includes a first R-shaped portion 81 and a second R-shaped portion 82.
[0016]
The first R-shaped portion 81 is formed at the lower end of the upper side walls 61 and 71 of the third and fourth side walls 60 and 70, respectively. The first R-shaped portion 81 is formed so as to protrude from the middle portions of the upper side walls 61 and 71 in the vertical direction to the inside of the box 10. The inner side surface of the box 10 of the first R-shaped portion 81 is a curved surface that bends downward as it goes to the front end in the protruding direction. The first R-shaped portion 81 is formed over the entire rotation axis direction of the third and fourth side walls 60 and 70.
As shown in FIG. 5, the first R-shaped portion 81 is reinforced with at least one rib 81a. The rib 81a is provided with a convex portion 81b. The convex portion 81 b is provided so as to protrude downward from the first R-shaped portion 81.
[0017]
As shown in FIG. 2, the second R-shaped portion 82 is formed on the upper end portions of the lower side walls 62 and 72 of the third and fourth side walls 60 and 70, respectively. The second R-shaped portion 82 is formed so as to protrude from the middle portions of the lower side walls 62 and 72 in the vertical direction to the inside of the box 10. The inner side surface of the box 10 of the second R-shaped portion 82 is a curved surface that bends upward as it goes to the front end in the protruding direction. The second R-shaped portion 82 is formed over the entire rotation axis direction of the third and fourth side walls 60 and 70.
[0018]
The second R-shaped portion 82 forms a cross-sectional arc portion 90 having a circular arc shape that protrudes inward of the box 10 by abutting the front end in the protruding direction of the first R-shaped portion 81 when the box 10 is assembled. To do. When the leading end of the first R-shaped portion 81 and the leading end of the second R-shaped portion 82 are in contact with each other, the inner surface of the first R-shaped portion 81 and the second R-shaped portion The inner surface of the box 10 is smoothly smoothed.
As shown in FIG. 5, the second R-shaped portion 82 is provided with at least one rib 82 a and is reinforced. The rib 82a has a recess 82b. The convex portion 81b of the first R-shaped portion 81 is fitted into the concave portion 82b when the box 10 is assembled.
[0019]
Here, the assembly / folding motion of the box 10 according to the embodiment of the present invention will be described.
First, when the box 10 is in the assembled state, as shown in FIG. 1, the first to fourth side walls 40, 50, 60, 70 are raised and extend in the vertical direction. As shown in FIG. 2, the R-shaped portion 80 forms a first cross-sectional arc portion 90. As shown in FIG. 5, the convex part 81b is fitted in the concave part 82b.
[0020]
When the box 10 is assembled, the first side wall 40 is pushed up toward the second side wall 50 by hand and the second side wall 50 is pushed up toward the first side wall 40 by hand. The side wall 40 and the second side wall 50 are rotated until the upper end portion and the lower end portion thereof are in the same vertical position.
[0021]
When the first side wall 40 and the second side wall 50 are pushed up until the first side wall 40 and the second side wall 50 extend in the horizontal direction, the third side wall 60 and the fourth side wall 70 are It can be bent. Therefore, by moving the frame 20 to the tray 30 side with the first side wall 40 and the second side wall 50 extending in the horizontal direction, the third side wall 60 and the fourth side wall 70 are bent, and the box 10 Can be folded. At that time, the first R-shaped portion 81 is separated from the second R-shaped portion 82, and the convex portion 81b is detached from the concave portion 82b.
[0022]
When the box 10 is in the folded state, as shown in FIGS. 3 and 4, the first to fourth side walls 40, 50, 60, 70 extend in the horizontal direction. The R-shaped portion 80 is not in contact with the bottom wall portion 31 of the tray 30. The R-shaped portion 80 does not protrude above the box 10.
[0023]
The time when the box 10 is assembled from the folded state will be described.
When the frame 20 is pulled upward with respect to the tray 30, the third side wall 60 and the fourth side wall 70 rise while the first side wall 40 and the second side wall 50 extend in the horizontal direction. When the third side wall 60 and the fourth side wall 70 extend in the vertical direction and the R-shaped portion 80 forms the cross-section arc portion 90, the first side wall 40 and the second side wall 50 rotate downward under their own weight. Then, the box 10 is assembled.
[0024]
Next, the operation of the embodiment of the present invention will be described.
(1) Since the cross-section arc part 90 is provided inside the box 10, the cross-section arc part 90 is not visible from the outside of the box 10, and the appearance of the box 10 is good.
{Circle around (2)} Since the shape is R, the stored item is not caught on the arcuate section 90 and the stored item is not damaged.
(3) Since the convex portion 81b and the concave portion 82b are provided, the side wall of the box 10 is more resistant to lateral loads from the inside and outside of the box than when the convex portion 81b and the concave portion 82b are not provided. .
[0025]
【The invention's effect】
According to the folding box of the first or second aspect, the following effects (1) and (2) can be obtained.
(1) Since the cross-section arc part is provided inside the box, the cross-section arc part is not visible from the outside of the box, and the box looks good.
{Circle around (2)} Since the shape is R, the stored item is not caught on the arc of the cross section, and the stored item is not damaged.
According to the foldable box of claim 2, since the convex portion and the concave portion are provided, the side wall of the box has a lateral load from the inside and the outside of the box as compared with the case where the convex portion and the concave portion are not provided. Strong against.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an assembled state of a folding box according to an embodiment of the present invention.
FIG. 2 is an enlarged cross-sectional view taken along line AA of FIG.
FIG. 3 is a perspective view showing a folded state of the folding box according to the embodiment of the present invention.
4 is an enlarged sectional view taken along line BB in FIG. 1;
FIG. 5 is an enlarged cross-sectional view of the folding box of the embodiment of the present invention at a portion where a convex portion and a concave portion are provided.
FIG. 6 is an enlarged cross-sectional view showing a pivotal connection structure between the lower end of the lower side wall of the third and fourth side walls and the tray of the folding box of the embodiment of the present invention.
FIG. 7 is a perspective view showing a conventional folding box during assembly (or during folding).
FIG. 8 is an enlarged cross-sectional view taken along the line CC of FIG.
[Explanation of symbols]
10 Box 20 Frame 30 Tray 40 First side wall 50 Second side wall 60 Third side wall 61 Third side wall upper side wall 62 Third side wall lower side wall 70 Fourth side wall 71 Fourth side wall upper side wall 72 Lower side wall 80 of 4th side wall R shape part 81 1st R shape part 82 2nd R shape part 81b Convex part 82b Concave part 90 Circular arc part

Claims (2)

A frame having four sides, a quadrilateral tray located below the frame, and first to fourth side walls located between the frame and the tray,
The first side wall and the second side wall are pivotally connected to opposite two sides of the frame at the upper end, and the lower end is not connected to the tray,
The third side wall and the fourth side wall are divided into an upper side wall and a lower side wall, respectively.
The upper ends of the upper side walls of the third and fourth side walls are connected to the remaining two opposite sides of the frame so as to be rotatable in a direction perpendicular to the direction of rotation of the first and second side walls. 3, the lower end of the lower side wall of the fourth side wall is connected to the two opposite edges of the tray so as to be rotatable in a direction perpendicular to the direction of rotation of the first and second side walls. The lower end portion of the upper side wall of the fourth side wall and the upper end portion of the lower side wall of the third and fourth side walls are rotatably connected in a direction orthogonal to the turning direction of the first and second side walls. In addition, an R-shaped portion is formed at each of the lower end portion of the upper side wall and the upper end portion of the lower side wall, and the R-shaped portion forms an arcuate portion that protrudes inside the box by abutting with each other when the box is assembled. To
Foldable box. The foldable box according to claim 1, wherein a convex portion is provided on one of a pair of R-shaped portions facing each other when the box is assembled, and a concave portion is provided on the other.

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