JPH09301439A - Mating angle corner pad - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide a corner corner pad which can be assembled by using corrugated cardboard as a material, without using glue, and simply by folding and fitting. SOLUTION: Basically, a square sheet 1 is divided into four chambers by inserting a fold line 2 of a cross fold line connecting the centers of the four sides, and an outer bottom chamber 8 is formed by cutting a bottom mid-slot 10. The inner bottom chamber 9 can be stacked on the upper side, the inner bottom return plate 18 is rolled in, the outer bottom return plate 16 is folded, and
And the b-back plate 24 are folded in, the fitting is fixed and the assembly is completed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a corner pad for protecting the corners of stored items during packaging.

[0002]

2. Description of the Related Art Conventional corner pads have been made of polystyrene foam.

[0003]

Even with the prior art, there were no problems in use. However, since the material is styrofoam, there are problems that it emits toxic gas during manufacturing and incineration, damages the furnace because it burns at high temperatures, and does not decompose naturally even when buried in soil. In order to solve the above problems, an object of the present invention is to solve the problem that corrugated paper is used as a raw material and the assembly can be performed only by fitting without using glue.

[0004]

[Means for Solving the Problems] A square sheet is formed by connecting the centers of the sides to each other to form a fold line with a cross-shaped valley fold line, which is divided into four chambers, and the upper two chambers are the back chambers. The lower two chambers are the bottom chambers, and the fold lines sandwiched by the bottom chambers are separated from the boundary lines to provide the center-bottom kerf, and the bottom-bottom kerf allows the bottom chambers to overlap. When the top half of the bottom chamber is folded inward in the overlapped state, the overlapped state is fixed, and in order to fix this folded state,
The front halves of both back chambers are folded inward, and the folding positions of the bottom chamber halves are fixed by fitting due to the thickness of the seat.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described with reference to the drawings. In FIG. 1 which is a plan view showing an expanded state, the present invention uses corrugated paper as a material,
The corrugated plate-shaped core ridge line penetrates in the vertical direction, and the sheet 1 is basically a square. Basically, since the square is the basic shape and it collapses from the basic shape according to the thickness of the sheet 1. The boundary fold line 2 is provided by a valley fold line connecting the centers of the four sides in a cross shape, and the intersection of the boundary fold lines 2 is intersection 1
It is divided into four chambers, which are basically square by the boundary line 2, and the upper half is the back chamber, the left side is called A back chamber 4, and the right side is called B back chamber 5. , A back room 4 and B back room 5
The boundary fold line 2 sandwiched between and is called a spine fold line 3, the left side of the intersection line 11 from the intersection 11 is called an outer bottom fold line 6, the right side is called an inner bottom fold line 7, and the bottom fold line is The lower region therethrough is the bottom chamber, of which the left side is called the outer bottom chamber 8 and the right side is the inner bottom chamber 9.
, A bottom middle kerf 10 is provided by separating a partial portion of the boundary line 2 sandwiched between the outer bottom chamber 8 and the inner bottom chamber 9 from each other.
By separating 0, both bottom chambers become free from each other, and the inner bottom chamber 9 can be overlaid on the outer bottom chamber 8 by valley-folding the spine folding line 3 and both bottom spine folding lines. , Each room divided into four by boundary line 2 has intersection 1
1 has a diagonal fold line 12 which does not include 1 and has a return plate for folding and fitting inwardly in the outer half region of each chamber via the diagonal fold line 12 and the diagonal fold line 12 Among them, the A back room 4 is referred to as an a diagonal fold line 19, the B back room 5 is referred to as a b diagonal line 20, the inner bottom chamber 9 is referred to as an inner bottom front fold line 14, and the outer bottom chamber 8 is referred to as an outer bottom front fold line 13, respectively. Inside the a diagonal line 19 is a back plate 2
1. The outer side is referred to as a spine-back plate 22, the inner side through the b oblique folding line 20 is referred to as the b backboard 23, the outer side is referred to as the b backboard plate 24, and the inner side through the inner bottom front folding line 14 is the inner bottom plate. 17, the outer side is referred to as an inner bottom return plate 18, the inner side through the outer bottom front fold line 13 is referred to as an outer bottom plate 15, and the outer side is referred to as an outer bottom return plate 16. In the case where the sheet 1 is not so thick, or is soft. In some cases, it is not necessary to consider the thickness, but in the case where the sheet 1 is hard and also has thickness, it is necessary to take the thickness into consideration. Each of the diagonal fold lines 12 included in the chamber is sandwiched between two parallel valley fold lines to form a thickness region, and if the respective thickness regions are individually referred to, the a diagonal fold line 19 is the a thickness region 26, The b diagonal fold line 20 indicates the b thickness region 27, the inner bottom front fold line 14 indicates the inner bottom thickness region 28, and the outer bottom front fold line 13 indicates the outer bottom thickness. 29, only the outer bottom thickness region 29 has a thickness of two sheets 1 because it is necessary to wrap the inner bottom chamber 9, and the inner bottom spine folding line 7 is the thickness of the seat 1 with respect to the outer bottom spine folding line 6. Only when the sheet 1 has no thickness or is soft in the assembly order, the bottom return plate is folded in,
Although it is fixed by folding the back plate,
If the seat 1 is thick, it is easier to assemble by reversing the above. If the seat 1 is thick,
At the time of assembly, one edge of the spine plate adjacent to the inside of the spine folding line 3 needs to heave the protruding pieces toward each other in the vertical direction.
The spine-back plate 22 is provided with a back convex piece 32, and the b spine-plate 24 is provided with a back convex piece 35. The other edge of the spine-back plate is located in the lateral direction when unfolded and is adjacent to the bottom spine folding line during assembly. With respect to the edge, a square concave edge for accommodating a square convex piece obtained by projecting the edge of the first half of the bottom turning plate is provided. b corner concave edge 33 is provided, the edge of the front half of the inner bottom return plate 18 is protruded by the thickness of the sheet 1 to provide the inner corner convex piece 30, and the edge of the front half of the outer bottom return plate 16 is set to the thickness of the sheet 1. The outer-angle convex pieces 31 are provided by projecting by the amount.

Referring to FIG. 2 which is a perspective view showing the assembling process, the assembling order of the present invention will be described. The outer bottom back folding line 6 and the inner bottom back folding line 7 are bent at a right angle, and then the back folding line 3 is formed.
By bending the inner bottom plate 17 onto the outer bottom plate 15
Can be stacked.

In FIG. 3 which is a perspective view showing the assembling process, the spine-back plate 22 and the spine-back plate 24 are folded inward, and when they are folded in, the back-convex piece 35 and the back-convex piece 35 are projected. Since the pieces 34 are hesitant to each other in the vertical direction, they do not collide with each other and are fitted and fixed.

In FIG. 4, which is a perspective view showing the completed state of assembly, the fixing ability is weak only by fitting the convex back pieces 35 and the convex back pieces 34 to each other. The inner bottom chamber 9 is wound inward so that the outer bottom return plate 16 is folded in such a manner that the folding with the 24 does not return.
Assembling is completed by fitting the outer-angled convex pieces 31 to 3 and, even if the sheet 1 is thick, the outer-cornered convex pieces 31 can be easily fitted by the width of the outer bottom thickness region 29. To do.

[0009]

[Effects of the Invention] Since the material is corrugated cardboard, there is no problem in manufacturing and incineration, and since the developed shape is square, it is easy to take paper, and it is possible to stack the inner bottom chamber on top of the outer bottom chamber by separating it with the bottom middle cutting groove. Yes, the inner bottom return plate was rolled up and the outer bottom return plate was folded, so that the overlapping state of the outer bottom plate and the inner bottom plate was fixed, and the a spine-back plate and the b spine-back plate were folded in and folded in. By fitting with the outer bottom return plate, the present invention can be fixed without using glue.

[Brief description of drawings]

FIG. 1 is a plan view showing an unfolded state.

FIG. 2 is a perspective view showing an assembling process.

FIG. 3 is a perspective view showing an assembly process.

FIG. 4 is a perspective view showing a completed state of assembly.

[Explanation of symbols]

 2 Boundary Folding Line 3 Back Folding Line 4 A Back Room 5 B Back Room 6 Outer Bottom Back Folding Line 7 Inner Bottom Back Folding Line 8 Outer Bottom Room 9 Inner Bottom Chamber 10 Bottom Middle Groove 15 Outer Bottom Plate 16 Outer Bottom Flip Plate 17 Inner Bottom Plate 18 Inside Bottom turning plate 21a Back plate 22a Back turning plate 23b Back plate 24b Back turning plate

Claims (1)

[Claims] 1. A corrugated cardboard is used as a material, and the corrugated cardboard is basically a square, and a boundary fold line 2 is provided by a cross valley fold line connecting the centers of respective sides of a square sheet 1, and the boundary fold line 2 is formed. It is divided into four chambers through, and the fold line from the intersection 11 of the boundary fold line 2 to the heavens is called the back fold line 3. One divided into the left and right through the back fold line 3 is called the A back chamber 4, and the other is It is called B back room 5, and it is the intersection 11 of the boundary line 2.
Of the horizontal fold lines from left to right, one is called an outer bottom spine fold line 6, the other is called an inner bottom fold line 7, and the lower chamber through the outer bottom fold line 6 is called an outer bottom chamber 8, and the inner bottom The lower chamber through the spine folding line 7 is referred to as the inner bottom chamber 9, and the lower folding line is cut off from the intersection 11 of the boundary folding line 2 to provide the bottom center kerf 10, and by providing the bottom center kerf 10. The inner bottom chamber 9 can be stacked on the bottom chamber 8 to form a three-dimensional corner shape, and each of the four chambers divided by the boundary line 2 has a diagonal fold line 12 that does not include an intersection 11. In the state in which the bottom chambers are overlapped with each other, the bottom folded plate having the outside is folded back through the diagonal folding line 12 to fix the overlapping state of the bottom chambers. The outer bottom chamber 8 side is the outer bottom front folding line 13, the inner bottom chamber 9 side is the inner bottom front folding line 14
The inner side through the outer bottom front folding line 13 is referred to as the outer bottom plate 15, the outer side is referred to as the outer bottom return plate 16, the inner side through the inner bottom front folding line 14 is the inner bottom plate 17, and the outer side is the inner bottom return plate 18. In order to fix the folded state of the return plate, it is performed by folding back the back plate that is held outward through the diagonal folding line 12 of the back chamber. The chamber 4 direction is referred to as an a-bend line 19 and the B back chamber 5 direction is referred to as a b-bend line 20.
The inside is referred to as an a back plate 21, the outside is referred to as an a spine plate 22, the inside is referred to as a b spine plate 23, the outside is referred to as a b spine plate 24, and a seat is formed. No. 1 does not need to consider the thickness when using soft corrugated corrugated cardboard, but if it is hard corrugated corrugated cardboard, it is necessary to provide a thickness area for allowing the thickness to escape. The inner bottom spine fold line 7 is shifted to the top by the thickness relative to the fold line 6, and the shifted step is referred to as a thickness step 25. In the four diagonal fold lines 12, two parallel fold lines are formed in the width of thickness. To form a thickness region, and each thickness region is a
To the diagonal line 19 a thickness area, to b diagonal line 20 b thickness area 27,
The inner bottom thickness area 28 is provided on the inner bottom front folding line 14, and the outer bottom thickness area 29 is provided on the outer bottom front folding line 13. However, since only the outer bottom thickness area 29 encloses the inner bottom chamber 9, two sheets 1 It is provided with a width of a thickness of a portion, and convex pieces and concave edges are provided in order to firmly fit and fix the four return pieces. The outer corner convex piece 31 is provided with the tip half edge of each return plate protruding outward by the amount of the thickness, and in the state in which both of the corner convex pieces can be inserted,
2. A b-shaped concave edge 33 is provided on the spine-turning plate 24 by cutting off the front half of the side edge of each spine-turning plate by the thickness of the spine-turning plate 24. Alternately protruding by the thickness so as to hesitate in the direction, a spine-back plate 22 projects toward the ground and the back spine plate 34 protrudes toward the ground, and b spine plate 24 projects toward the sky and the back spine plate 35 protrudes. Fitting angle corner pads provided for each.