JP3220269B2 - Transport container - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container for transportation, and more particularly, to a case where a plurality of containers are stacked up and down in a vertical direction and the contents are housed therein, and the container is taller and empty. TECHNICAL FIELD The present invention relates to a transport container that can be stacked in multiple stages while keeping its height short in a folded state.

[0002]

2. Description of the Related Art A synthetic resin transport container (container), which is widely used for storing and transporting foods and other products, is used to store contents therein and stack it in multiple stages. In some cases, the stacking is performed with the height raised (hereinafter, referred to as stacking), and when the inside becomes empty, the stacking is performed with the height lowered (hereinafter, referred to as nesting).

[0003] This type of transport container is generally called an SN container, and has the advantage that it does not become bulky when not in use and contains no contents. As a transport container of this kind, the applicant has previously proposed a Japanese Utility Model Application No. 2-49819 (Japanese Utility Model Application Laid-Open No. 4-1015) as shown in FIG.

That is, the container body 1 of the transport container has a bottom plate portion 2 and four side wall portions 3 erected from the periphery of the bottom plate portion 3.
It is formed in a box shape opened upward from 4, 5, and 6. Each of the side wall portions 3, 4, 5, 6 is formed so as to gradually expand outward toward the upper free end, and flange portions 3a, 4a, 5a, 6a are integrally formed on the opening edges thereof. It is formed continuously.

[0005] At the lower portion of the outer surface of one of the side walls 4 on the longitudinal side,
The supporting legs 7 and 8 are formed to protrude. These legs 7, 8 are formed in different shapes, that is, the width of the legs 8 is wider than the width of the legs 7. Further, a bottom plate portion 2 is provided on an upper portion of the inner surface of the side wall portion 3 facing the side wall portion 4.
Pocket portions 9 and 10 into which the support legs 7 and 8 can be respectively fitted are formed at positions symmetrical with respect to the support legs 7 and 8 with respect to a center point O of the center.

On the outer surface of the other side wall 3 on the longitudinal side, supporting legs 7 and 8 are formed in the same manner as in the case of the side wall 4, and on the inner surface of the side wall 4, similarly to the side wall 3. Pocket portions 9 and 10 are respectively formed.

On the other hand, on the lower portion of the outer surface of the side wall 5 on the short side,
The support legs 11 are formed to protrude. In addition, on the upper part of the inner surface of the other side wall 6 opposite to the side wall 5,
Pocket portions 12, 12 into which the support legs 11, 11 can be respectively fitted are formed at positions symmetrical with the support legs 11, 11 about the center point O of the bottom plate 2.

[0008] Further, similar to the case of the side wall 5, the supporting legs 13, 13 are provided on the lower portion of the outer surface of the other side wall 6 on the short side.
Are formed on the inner surface of the side wall 5 opposite to the side wall 6 at positions symmetrical with the legs 13, 13 about the center point O of the bottom plate 2.
3 into which pocket portions 14 can be fitted.

The support legs 11, 11 on the side wall 5 are provided.
The space between the support legs 13 is larger than the space between the support legs 13 in the side wall portion 6. This gives 2
When the two container bodies 1 are vertically overlapped in the same direction, the side walls 3, 4, 5, 5 of the container body 1 located above
6, each of the legs 7, 8, 11, 13 formed at the lower portion of the outer surface
Are the side walls 3 at the upper end of the container body 1 located below,
The stacking state is established on each of the flange portions 3a, 4a, 5a, and 6a of 4,5.6.

On the other hand, when the two container bodies 1 are overlapped with each other in different directions, that is, one container body 1 is rotated by 180 ° with respect to the other container body 1 in the up-down direction, the container located above Each side wall part 3, 4, 5, of body 1
6, each of the legs 7, 8, 11, 13 formed at the lower portion of the outer surface
Are the side walls 3, 4, 5, and 5 of the container body 1 located below.
6, each pocket portion 9, 10, 12,
14, that is, the leg 7 is in the pocket 9, the leg 8 is in the pocket 10, the leg 11 is in the pocket 12, and the leg 13 is in the pocket 14. It is in a nesting state.

[0011]

However, in the above-mentioned conventional example, as shown in FIG. 8, a large box 15 having a size twice as large as the container body 1, and an upper flange portion 15a is provided at the opening end side. , A lower flange 15b on the bottom side, and legs 15 projecting downward from the lower flange 15b.
c, each of which has a lower flange portion 15b of a lower box 15 positioned above an upper flange portion 15a of a lower box 15 and is vertically overlapped with the container body 1. When it is attempted to combine the two container bodies 1, 1 and 1, the support legs 7, 8, 11, and 13 of the container body 1 are positioned on the upper flange 15a of the box 15. Can be stacked side by side, but this container body 1, 1
Could not be stacked on top of the box.

That is, as shown in FIG. 1, when they are juxtaposed in the same direction, the side walls 3 and 4 extending substantially at the center of the box 15 adjacent to each other become obstructive, and are not shown. However, when they are juxtaposed in different directions, the side wall portions 3, 3 or 4, 4 extending adjacent to each other hinder, and the lower flange 15b of the bin 15 Before being located on the parts 3a, 4a, 5a, 6a, the side walls 3, 4 (or 3, 3 or 4, 4)
Flange portions 3a, 4a (or 3a, 3a or 4)
a, 4a) and the bottom surface of the leg 15c of the large box 15 come into contact with each other, so that the large boxes 15 cannot be stably stacked on the container bodies 1, 1.

In view of the above, the present invention provides a container body
Stable nesting and stacking can be performed, and when used in combination with a large box having twice the size, two container bodies are placed on the large box and the two container bodies are placed on the two container bodies. An object of the present invention is to provide a large box that can be stably stacked.

[0014]

In order to achieve the above-mentioned object, a transport container according to the present invention comprises a supporting portion at a lower portion of an outer surface of a side wall portion of a container body having a flange portion at an opening edge, and a supporting portion at an upper portion of an inner surface. And a pocket portion is provided at a point symmetrical position, and when the container bodies are overlapped in the same direction, the support legs of the upper container body are located on the flange portions of the lower container body, and are overlapped in different directions. In a transport container in which the legs of the upper container body are immersed in the pockets of the lower container body when they are combined, the height of the flange portion of one of the side wall portions is set via the step portion. And the height of the stepped portion and the height of the lower end surface of the supporting leg portion provided on the side wall portion having the lower flange portion from the bottom surface of the container body. b The sum of, and is characterized in equally (a + b = c) that formed was the height c of the bottom surface of the container body of the support leg lower end surface provided in the other side wall portion.

[0015]

According to the present invention constructed as described above, when the container bodies are overlapped in the same direction, the lower end surface of the supporting leg provided on the side wall portion having the lower flange portion is connected to the other side wall portion. Distance c-b from the lower end face of the supporting leg provided at
(= A), and the lower flange portion is located a distance a (= c−b) lower than the other flange portions, so that all the legs of the container body located at the upper level are positioned at the lower level. Is located on all the flange portions of the container body located at the position, so that stable stacking can be performed.

Further, when the side walls having the lower flange portion are put on the box in a state of being close to each other, the supporting legs provided on the side walls other than the side wall having the lower step have an upper part of the box. Located on the flange portion, further put a box on the container body, the bottom of the box enters the flange portion upper surface of the side wall portion having the lower step flange portion,
At the same time, the lower flange portion of the large box is located on the flange portion of the other side wall portion of the container body, whereby stable stacking can be performed.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In the present embodiment, the container body 21 of the transport container gradually expands upward from the bottom plate portion 22 and the four side wall portions 23, 24, 25, 26 standing from the peripheral edge of the bottom plate portion 22. Each of the side walls 22, 23, 24, 25 is formed integrally with flanges 23a, 24a, 25a, 26a at the opening edges thereof.

Here, the height of the flange portion 23a of the side wall portion 23 is adjusted by the other flange portions 24a, 25 via the step portion.
A step portion having a height a is formed one step lower than the heights of the flange portions 24a, 25a, 26a, that is, between the flange portion 24a and the other flange portions 24a, 25a, 26a.

The container body 21 is made of a synthetic resin such as polypropylene or polyethylene.
A pair of support legs 27, 27 protrude from a lower portion of the outer surface of one of the side walls 23 on the longitudinal side opposed to each other, and a pair of support legs 28, 28 protrude from a lower portion of the outer surface of the other outer wall 24, respectively. Have been. These legs 27, 28 have different shapes, that is, the width of the legs 28 is
Is wider than the width of
The distance between 7, 27 is set to be smaller than the distance between the legs 28, 28.

Further, the side wall portion 2 opposed to the side wall portion 23
4, a pair of pocket portions 29, 29 into which the support legs 27, 27 can be respectively fitted at positions symmetrical with respect to the support legs 27, 27 about a center point O of the bottom plate portion 22. However, on the upper part of the inner surface of the side wall portion 23 facing the side wall portion 24, the support legs 2 are respectively located at positions symmetrical with respect to the support legs 28, 28 about the center point O of the bottom plate portion 22.
A pair of pockets 3 into which 8, 28 can be fitted.
0 and 30 are respectively formed.

Incidentally, as in the conventional example shown in FIG. 7, it is also possible to provide a supporting portion having a different width at the upper portion of the outer surface of the side wall portion and a pocket portion corresponding to the supporting portion at the lower portion of the inner surface. Of course.

On the other hand, at the lower part of the outer surface of one of the side walls 25 on the short side facing each other, one leg is formed at the center of the side wall 25 and formed in a rectangular frame shape. A part 31 is provided.

On the upper portion of the inner surface of the other side wall 26 on the short side, the support leg 3 is mounted around the center point O of the bottom plate 22.
A pocket 32 into which the support leg 31 can be fitted is formed at a point symmetrical position with respect to 1, that is, at the center of the side wall 26.

The supporting leg 31 and the pocket 32
May be provided two at each corresponding point symmetric position as in the conventional example shown in FIG. Further, a pair of supporting legs 33, 33 are formed at the left and right positions of the other side wall portion 26 on the shorter side of the outer surface lower side of the installation portion of the pocket portion 32, and the pair of leg portions 33, 33 are opposed to the side wall portion 26. A point O at the center of the bottom plate portion 22
Pocket portions 34, 34 into which the support legs 33, 33 can be fitted respectively are formed at positions symmetrical with respect to the support legs 33, 33 around the center.

The support leg 27 provided on the side wall 23 having the lower flange portion 23a has a lower end surface located at a height b from the bottom surface of the container body 21 and another side wall. The legs 28, 31, and 33 provided on the portions 24, 25, and 26 are configured such that the lower end surfaces thereof are positioned at a height c from the bottom surface of the container body 21.
Further, the sum of the height a of the step portion of the flange portion 23a and the height b of the lower end surface of the support leg portion 27 from the bottom surface of the container body 21 is the container at the lower end surface of the support leg portions 28, 31, 33. The height is set equal to the height c from the bottom surface of the main body 21 (a + b = c).

That is, the support leg 27 is connected to the other support legs 28, 3
1, 33, the height a (= c) of the step portion of the flange portion 23a.
-It protrudes downward by the same length as that of -b). Next, stacking and nesting of the container bodies 21 and 21 will be described.

First, when the stacking state is set, 2
The two container bodies 21 and 21 are vertically overlapped in the same direction. Then, the supporting legs 27, 28, 31, 33 formed at the lower portion of the outer surfaces of the side walls 23, 24, 25, 26 of the container body 21 located above are respectively connected to the side walls 23 of the container body 21 located below. , 24, 25, and 26 are located on the respective flange portions 23a, 24a, 25a, and 26a at the upper end, and are in a stacking state.

That is, at this time, the flange portion 23a, which is one step lower,
The lower end surface of the support leg 27 provided on the side wall 23 having the support portion 2 is provided on the support leg 2 provided on the other side walls 24, 25, 26.
The flange portion 23a which is located below the lower end surfaces of 9, 31, and 33 by a distance c-b (= a) and is one step lower than the other flange portions 24a, 25a, and 26a has a distance a (= c-).
b), all the legs 27, 18, 31, 33 of the upper container body 21 are all flanged portions 23a, 24 of the lower container body 21.
a, 25a, and 26a, whereby stable stacking can be performed.

When the nesting state is set,
The two container bodies 21 and 21 are overlapped in different directions, that is, with one container body 21 rotated 180 ° with respect to the other container body 21 in the up-down direction. Then, each side wall part 23, 2 of the container body 21 located above is
Legs 27, 2 formed at the lower part of the outer surfaces of the 4, 25, 26
8, 31, and 33 are located in pockets 29, 30, 32, and 34 formed at the upper portions of the inner surfaces of the side walls 23, 24, 25, and 26 of the container body 21 located below. In the pocket 29, the support 28 is in the pocket 30, the support 31 is in the pocket 32, and the support 3
3 are immersed in the pocket portions 34, respectively, to be in a nesting state.

Next, a case where the container main body 21 is used in combination with a large box 35 having a size twice as large as that of the container main body 21 will be described with reference to FIG. The large box 35 used here has an upper flange portion 35a on the open end side, a lower flange portion 35b on the bottom side, and legs 35c projecting downward from the lower flange portion 35b. By positioning the lower flange portion 35b of the upper bin 35 on the upper flange portion 35a of the lower bin 35, the upper bin 35 can be stacked vertically.

First, when stacking the two container bodies 21 and 21 on the large box 35, the lower flange portion 2 is required.
3a and 23a are placed close to each other, that is, the flanges 23a and 23a are located in the center of the large box 35, and the side wall of each container body 21 is placed on the upper flange 35a of the large box 35. The supporting legs 28, 31, 33 provided on the parts 24, 25, 26 are positioned.

Then, each container main body 21 is supported by the large box 35 on three sides of the other three side walls 24, 25 and 26 other than the side wall 23 having the lower flange portion 23a.

When stacking the large boxes 35 on the two container bodies 21, 21,
The lower flange portion 35b of the large box 35 is located on the side wall portions 24, 25, 26 other than the side wall portion 23 having the lower step flange portion 23a.

Then, the lower flange portion 35b of the large box 35
The legs 35c projecting downward from the inside of the container main bodies 21 and 21 enter the inside of the container main bodies 21. At this time, the flange 23a located at the center of the large box 35 extends to the other flanges 24a, 25a and 25a. Since it is formed lower by the height a, the box 3 is extended to near the upper surface of the flange portion 23a.
The bottom surface of the fifth leg 35c enters, whereby stable stacking can be performed.

The height d of the leg 35c protruding downward from the lower surface of the lower flange 35b of the large box 35 is set here.
Needs to be shorter (d ≦ a) than the height a of the step portion, but by making them equal (d = a), the lower surface of the leg 35c of the large box 35 abuts on the flange portion 23a one step lower. Can be supported.

[0036]

As described above, according to the transport container of the present invention, the container bodies can be stably nested by overlapping in different directions. Thereby, all the supporting legs of the upper container body are positioned on all the flange portions of the lower container body, and stable stacking can be performed.

Moreover, when used in combination with a large box having twice the size, the two container bodies are stably placed on the large box and the large box is stably placed on the two container bodies. Can be stacked.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of the present invention as viewed from one side wall portion side on a short side.

FIG. 2 is a perspective view of the other side of the short side as viewed from the side.

FIG. 3 is also a plan view.

FIG. 4 is a front view of a state in which container bodies are stacked together.

FIG. 5 is a cross-sectional view of a main part in a state where the container bodies are stacked.

FIG. 6 is a perspective view showing a state where the container body and the large box are used in combination.

FIG. 7 is a perspective view showing a conventional example.

8 is a perspective view showing a state where the container body and the large box shown in FIG. 7 are combined.

[Explanation of symbols]

 Reference Signs List 21 Container main body 22 Bottom plate 23, 24, 25, 26 Side wall 23a, 24a, 25a, 26a Flange 27, 28, 31, 33 Leg 29, 30, 32, 34 Pocket 35 Large box 35a Upper flange 35b Lower flange

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Showa 58-53033 (JP, U) Japanese Utility Model Showa 54-85118 (JP, U) (58) Fields surveyed (Int. Cl. ⁷ , DB name) B65D 21/04 B65D 21/02

Claims (1)

(57) [Claims] 1. A container body having a flange portion at an opening edge, a supporting leg portion provided at a lower portion of an outer surface of a side wall portion, and a pocket portion provided at a point symmetrical position with respect to the supporting leg portion at an upper portion of the inner surface, so that the container body has the same orientation. The legs of the upper container main body are located on the flanges of the lower container main body when they are overlapped with each other. The height of the flange portion of one of the side wall portions is formed one step lower than the height of the flange portion of the other side wall portion via the step portion, and the height of the step portion is reduced. And the height b of the lower end surface of the support leg portion provided on the side wall portion having the lower flange portion from the bottom surface of the container main body, and the container main body of the lower end surface of the support leg portion provided on the other side wall portion Bottom Equal to the height c from the (a + b = c) carrying container, characterized in that the formed.