JPH0139173Y2 - - Google Patents

Description

[Detailed explanation of the idea] Industrial applications The present invention relates to a seedling box.

BACKGROUND ART As is well known, many seedling boxes are stacked in stacks at seedling centers and used for germination or seedling raising.

Conventionally known seedling boxes have long side walls that are uniformly at the same height over the entire length, so when stacked, there is a gap between the long side walls of the upper and lower seedling boxes. However, there was a problem in that the long side walls hardly provided the ventilation necessary for germination and seedling raising.

Problems that the invention aims to solve Therefore, the present invention eliminates the difficulties caused by the above-mentioned conventional technology, and allows the ventilation required for germination and seedling growth to be obtained from the long side walls in a stacked state, and also ensures stable ventilation. The idea is to provide a seedling box that can be used to grow seedlings.

Means for solving the problem The seedling box of the present invention to achieve the above purpose is:
In a rectangular seedling raising box, a box part having an inward U-shaped cross section that is integral with the side wall is provided on the outer surface of the middle part of the long side wall of the seedling raising box, and a box part that is integral with the side wall and has a U-shaped cross section facing inward is provided on the outer surface of the middle part of the long side wall of the seedling raising box. A box part integral with the side wall and having a substantially inward U-shaped cross section is formed from the upper end to the lower end of the side wall, and a box part is formed at the upper edge of the middle part of the longer side wall. It has a downward groove shape in cross section and a U-shape in plan and is integral with the box part of the section, and between the projecting parts of both wings, the inward flanges of both wings of the box part of the intermediate part are parallel to each other. A protruding stepped part shaped like a platform is formed into which the lower end of the body fits, and is integrally formed with the side wall of the part and the box part of the part at the upper edge of the end of the long side wall. The present invention is characterized in that a platform-like protruding step portion is formed with a downward groove-shaped cross section and having the same height as the above-mentioned protruding step portion.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.

In the figure, reference numeral 1 indicates the long side wall of a rectangular seedling box, and on the outer surface of the intermediate part of the long side wall 1, a box part 2 having an inward U-shaped cross section is integrally formed with the side wall 1 and the side wall. 1 from the upper end to the lower end, and box parts 3 having a substantially U-shaped cross section are integrally formed at both ends of the long side wall 1 from the upper end to the lower end of the side wall 1. do. Furthermore, on the long side wall 1 of the seedling box, there is a downward groove shaped cross section on the upper edge of the middle part.
It has a U-shape in plan and has a shape such that the lower end of the parallel body of the inward flanges 2a and 2a of the box part 2 in the middle part fits between the protruding parts 4a and 4a of both wings. A raised step 4 is formed integrally with the side wall of the intermediate portion and the box portion 2 of the portion. The front wall 4b of the protruding step portion 4 is integral with the web 2b of the box portion 2, and the rear wall 4c thereof is integral with the long side wall 1. Furthermore, on the upper edge of the long side wall 1 of the seedling box, there is a protruding step part 5 having a downward groove shape in cross section and having the same height as the protruding step part 4.
is integrally formed with the end side wall and the box portion 3 of the portion. The front wall 5a of the protruding step portion 5 is integral with the web 3a of the box portion 3, and the rear wall 5b is integral with the long side wall 1. In the illustrated example, the protruding step portion 5 has a horizontal L-shape in plan, and the flange 3b on the center side of the box portion 3 in FIG. It is shaped like a platform to fit into it.

Effects of the invention Since the seedling raising boxes of the present invention have the above-mentioned structure, when they are stacked with their orientations and centers almost aligned, the box part 2 of the middle part of the long side wall 1 of the upper tiered seedling raising box and the box part 2 of the middle part The integrated body rests on the raised platform-like protruding step part 4 at the middle part of the long side wall 1 of the lower seedling raising box, and the integrated body of the box part 5 at the end of the long side wall 1 of the upper seedling raising box and the side wall of the part stand on It rides on the elevated protruding step 5 at the end of the long side wall 1 of the lower seedling box, and there is a central portion between the long side wall 1 of the stacked upper and lower seedling boxes. A space is created between the opposing protruding step portions 4 and 5 at the end. This space contributes to obtaining the ventilation necessary for the germination and seedling raising of the fir stored in the seedling raising box together with the soil on the long side walls. And the fact that ventilation is provided on the long side walls of the seedling box in this way means that it is more effective than that provided on the short side walls.

Moreover, in the present invention, the parts of the upper seedling box to which the load is applied are the integrated body of the box part 2 and the side wall of the part at the middle part and the protruding step part 4 with a downwardly grooved cross section that is integral with this, and the box part 3 at the end part. A configuration that exhibits great rigidity against external forces acting in a plane that crosses the vertical axis, such as an integrated body of the side wall of the part and a protruding step part 5 with a downward groove-shaped cross section (based on the above integrated body) and a form that exhibits great rigidity against external forces acting in a plane that crosses the horizontal axis (due to the downward groove shape of the protruding step), it has excellent three-dimensional strength, In particular, the protruding step part 4 in the middle part has a U-shaped planar shape and a downward groove in cross section, so it functions as having excellent dual shape rigidity in terms of warp and latitude in a plane that crosses the horizontal axis. . Therefore, the present invention targets the long side walls, which have poor outward buckling strength, and stabilizes the ventilation even if the long side walls have a space for ventilation when stacking the seedling boxes. and can be secured.

Furthermore, in the present invention, the protruding step portion 4 of the intermediate portion
is U-shaped in plan, and the lower end of the parallel body of the inward flanges 2a and 2a of both wings of the box part 2 in the middle part fits into the space between the protruding parts 4a and 4a of both wings. Because the platform is shaped like a hill, if the stacked seedling boxes try to shift in the length direction, the overhanging part 4a of the protruding step 4 of the lower seedling box will shift. box part 2
It acts as a stopper for the inward flange 2a in the box, and contributes to preventing the seedling box from shifting.

[Brief explanation of the drawing]

Figure 1 is a front view showing one embodiment of the present invention;
The figure is the top view, the third figure is the side view, and the fourth figure is the first one.
FIG. 5 is an enlarged sectional view taken along lines in FIG. 1, and FIG. 6 is an enlarged sectional view taken along lines taken in FIG. 1. 1 is a long side wall, 2 and 3 are box parts, 2a is an inward flange, 4 and 5 are protruding step parts, and 4a is a projecting part.

Claims (1)

[Scope of utility model registration request] In a rectangular seedling raising box, a box part having an inward U-shaped cross section that is integral with the side wall is provided on the outer surface of the middle part of the long side wall of the seedling raising box, and a box part that is integral with the side wall and has a U-shaped cross section facing inward is provided on the outer surface of the middle part of the long side wall of the seedling raising box. A box part integral with the side wall and having a substantially inward U-shaped cross section is formed from the upper end to the lower end of the side wall, and a box part is formed at the upper edge of the middle part of the longer side wall. It has a downward groove shape in cross section and a U-shape in plan and is integral with the box part of the middle part, and between the protruding parts of both wings, there is a parallel body of inward flanges and inward flanges of both wings of the box part of the middle part. A protruding step part shaped like a platform is formed into which the lower end part is fitted, and a step part is formed on the upper edge of the end of the long side wall, and is integral with the side wall of the part and the box part of the part. A seedling raising box in which a raised step with a downwardly grooved cross section and the same height as the above-mentioned projecting step is formed.