JP3124437U - Synthetic resin nursery box - Google Patents

Abstract

The present invention relates to a synthetic resin nursery box, and the raised bottom-type thin nursery box body is deformed to medium-high, and there is no warpage or distortion. It is suitable for optimizing the set position of the nursery box, and is robust and lightweight in structure, making it easy to move and transport.
A seedling box body 1 formed by side edges 2a, 2a; 2b, 2b, a bottom plate 3, feet 4a, 4a; 4b, 4b, and a ridge having a number of drain holes 5 on the surface of the bottom plate. Part 6, one or more protrusions having one or more drain holes, recesses 7 provided between the protrusions, or recesses provided between the protrusions, and the inner area surrounded by the foot on the back side of the bottom plate A plurality of rib outer bodies 10A, 10B, 10C, 10D...; 10'A, 10'B, 10 'formed by horizontal ribs 8, 8. In the synthetic resin nursery box composed of C, 10'D ..., a large number of oblique ribs 11A ...; 11'A ... crossed symmetrically in the left-right direction are provided in the inner area of the rib shell. .
[Selection] Figure 1

Description

  The present invention relates to a synthetic resin nursery box, which is used, for example, to grow a seedling mat used in a rice planting machine, and is thinly formed into a raised bottom type in order to reduce the amount of floor soil to be stored for the purpose of reducing the weight. As the seedling box body is deformed to medium and high, and there is no warpage or distortion, it is suitable for the healthy growth of seedlings and the optimization of the setting position of the seedling box with respect to the rice planting machine after raising seedlings The structure is robust and lightweight, making it easy to move and transport.

  Conventionally, in a synthetic resin seedling box for growing a seedling mat used for a rice planting machine, a side edge portion arranged around the front, rear, left and right, a bottom plate provided on a lower surface surrounded by the side edge portion, and the bottom plate Raised bottom-type seedling box main body formed in a substantially box shape having legs installed around the front, back, left and right, and a convex strip having a number of drainage holes arranged in parallel on the surface of the bottom plate as appropriate A convex portion having one or more drain holes, a concave portion provided between the convex portions, or a concave portion provided between the convex portions, and the foot portion on the back side of the bottom plate A plurality of lateral ribs parallel to the long foot portion arranged in the longitudinal direction of the seedling box body in the enclosed inner area, and a short foot portion of the seedling box body crossing the lateral rib A plurality of vertical ribs provided in parallel, and a pair of left and right lines with the central longitudinal axis of the seedling box body as a boundary And a plurality of rib outer bodies formed in a substantially rectangular bottom surface so as to be vertically symmetric with respect to the central horizontal axis, and the rib outer bodies are close to the central vertical axis. In some cases, the width between the short leg portion and the vertical rib or the width between the vertical ribs was narrowed. Moreover, as said synthetic resin, the polypropylene resin, polycarbonate resin, vinyl chloride resin etc. as a thermoplastic resin are used, for example. The depth from the side edge of the seedling box body to the bottom plate is about 2 cm, and the height of the foot from the lower edge of the foot to the bottom plate is also about 2 cm.

  And this synthetic resin nursery box has a seedling box main body, a side edge portion arranged around the front, rear, left and right, a bottom plate provided on a lower surface surrounded by the side edge portion, a front, back, left, right periphery below the bottom plate. It is formed in a raised bottom form that forms a substantially box shape with the foot part installed in the bed, so the floor soil accommodated in the seedling box body becomes small, light weight is achieved, and the seedling box body is moved and transported It is easy and can reduce the labor and improve the efficiency of the work. Also, by raising the seedling box body to the bottom, the depth to the bottom plate is reduced, so the foot height is increased and the overall height remains the same, so the existing seeder should be changed It can be used as it is and seeded automatically. In addition, when multiple seedling boxes are stacked in a house or the like, the overall height of the seedling boxes does not have to be increased. In addition, there has been a technique in which a foot is raised to make it less susceptible to the influence of outside air at night and temperature changes from the ground, and healthy seedlings are bred (see, for example, Patent Document 1).

  In addition, as another conventional example of a synthetic resin nursery box, in a nursery box for raising seedlings with drainage holes provided on the side walls around the seedling box body, an inclined portion is provided on the bottom plate so as to descend toward the drainage holes. There was a thing of the provided composition.

When the synthetic resin nursery box is irrigated in the seedling box when raising seedlings, the floor material (floor soil) such as cultivated soil absorbs water and the floor material absorbs moisture from the floor material. The seedlings will be nurtured, but the excess water that has been irrigated by the seedling box body and is not retained by the flooring but falls to the bottom of the seedling box body is the center of the seedling box body in the short direction. There is a thing that flows toward the drainage hole on the side wall through the inclined portion of the bottom plate that gradually falls toward the both side ends and drains from the drainage hole (see, for example, Patent Document 2).
Utility Model Registration No. 3064421 JP-A-10-257826

  By the way, the conventional synthetic resin seedling box described in Patent Document 1 includes a side edge portion arranged around the front, rear, left and right, a bottom plate provided on a lower surface surrounded by the side edge portion, The seedling box body, which is formed in a substantially box-shaped raised bottom form by surrounding legs, is a long size with the inner area surrounded by the legs on the back side of the seedling box body arranged in the longitudinal direction of the seedling box body The center longitudinal axis of the seedling box body is formed by a plurality of horizontal ribs parallel to the foot part of the stool and a plurality of vertical ribs provided in parallel to the short foot part of the seedling box body crossing the horizontal rib. It is divided into a plurality of recesses having a substantially rectangular bottom surface so as to be symmetrical with respect to the boundary and to be symmetrical with respect to the vertical axis with respect to the central horizontal axis. The recess portion is provided with a rib structure in which a width between the foot portion and the vertical rib, which is shorter or closer to the central longitudinal axis, or a width between the vertical ribs is formed narrower. However, the reinforcement by the rib structure is not sufficient. For this reason, the seedling box body is shrunk after thermoforming due to the physical properties of the synthetic resin, or the seedling box body is formed thinly in a raised bottom form, so the seedling box body is deformed to a middle or high height, There was a risk of distortion. Therefore, since the leveling of the seedling box body is not guaranteed, the floor soil contained in the seedling box body and the water retention of the irrigation permeating into the floor soil are not uniform, resulting in variations, resulting in poor seedling growth. It became healthy and the roots grew taller, and it caused root rot due to excessive water. Such unhealthy seedlings fell down due to wind and rain even after planting in paddy fields, and did not grow well. In addition, since the level of the seedling box body cannot be maintained, it is not suitable for optimizing the setting position of the seedling box with respect to the rice planting machine after seedling.

  In addition, the conventional synthetic resin nursery box described in Patent Document 2 is provided with ribs for preventing deflection on the back side of the seedling box. However, similar to the idea described in Patent Document 1, reinforcement by the ribs is provided. Is insufficient. And in the above-mentioned conventional synthetic resin nursery box described in Patent Document 2, unlike the one described in Patent Document 1, a drain hole is provided in the side wall, and the bottom plate has a high central portion in the short direction of the nursery box. Since it is actively formed in a medium-high structure with sloping parts that gently descend toward both ends, when watering the seedling box body in raising seedlings, the water irrigated to the seedling box is Fall in the short direction. As described above, the conventional synthetic resin nursery box described in Patent Document 2 flows down to the both side ends along the sloped portion of the bottom plate that gently descends from the high center part of the nursery box. As a result of the unevenness of the floor soil to be stored and the irrigation water that permeates into the floor soil, the sides of the seedling boxes are farther than the seedlings that are grown in the center of the seedling box body in the short direction. The roots of the seedlings that were cultivated in the past were growing, and root rot was caused by excessive moisture, and it was not possible to carry out uniform and healthy seedlings as a whole nursery box. Moreover, since the seedling box itself is formed in a medium-high structure and the level cannot be maintained, it is not suitable for optimizing the setting position of the seedling box with respect to the rice planting machine after the seedling.

  The present invention solves such conventional drawbacks, the rib structure on the back side of the seedling box body is sufficiently reinforced, and the thin seedling box body in the raised bottom type is deformed to a medium-high height due to the physical properties of the synthetic resin The floor soil contained in the seedling box body and the irrigation water permeating into the floor soil are more uniform than one piece. The roots grow uniformly and healthy, and there is no root rot due to excessive moisture, so that healthy seedlings can be nurtured and the setting position of the seedling box with respect to the rice planting machine after seedling can be set appropriately, so that rice planting The purpose is to provide a synthetic resin nursery box that can improve work efficiency at the time.

The invention described in claim 1 of the present invention includes: (a) a side edge portion arranged around the front, rear, left and right; a bottom plate provided on a lower surface surrounded by the side edge portion; A raised-bottom-type seedling box main body formed in a substantially box shape having a foot portion installed in the periphery, and (b) a convex strip portion having a plurality of drainage holes arranged in parallel on the surface of the bottom plate as appropriate. A convex part having one or more drain holes, a concave part provided between the convex parts, or a concave part provided between the convex parts, and (c) the foot part on the back side of the bottom plate A plurality of horizontal ribs parallel to the long foot portion arranged in the longitudinal direction of the seedling box body, and the short foot portion of the seedling box body crossing the horizontal rib A plurality of vertical ribs provided in parallel to each other, and symmetrical with respect to the central vertical axis of the seedling box body, and A plurality of rib outline bodies formed in a substantially rectangular bottom shape so as to be symmetrical with respect to the vertical axis with respect to the central horizontal axis line, and the rib outline body becomes shorter as it approaches the central vertical axis line. In the synthetic resin nursery box in which the width between the legs and the vertical ribs or between the vertical ribs is narrowed,
A large number of diagonal ribs are arranged obliquely in parallel with the left and right lines with respect to the central longitudinal axis, and are arranged in a crossing manner so as to be provided in a large number in the inner area of each rib outer body.

  Further, the invention according to claim 2 of the present invention is that, in claim 1, the oblique ribs are lower than the longitudinal ribs and the transverse ribs, and the first oblique ribs disposed at a desired bottom surface at the bottom. The second oblique ribs are lower in height than the first oblique ribs and are arranged between the first oblique ribs.

  In addition, the invention according to claim 3 of the present invention is the invention according to claim 1 or 2, wherein the lateral ribs are parallel to two or more opposing legs in the longitudinal direction of the seedling box body. And at least one is arranged substantially in line with the central horizontal axis.

  According to the first aspect of the present invention, the side edge portions arranged around the front, rear, left and right sides, the bottom plate provided on the lower surface surrounded by the side edge portions, and the front, rear, left and right circumferences below the bottom plate A raised-bottom-type seedling box main body formed in a substantially box shape having a foot portion installed on the base plate, and a convex strip portion having a large number of drainage holes arranged in parallel on the surface of the bottom plate as appropriate, one or one A convex portion having the above drainage holes, a concave portion provided between the convex portions, or a concave portion provided between the convex portions, and an inner region surrounded by the foot portion on the back side of the bottom plate A plurality of lateral ribs parallel to the long foot portion disposed in the longitudinal direction of the seedling box body, and a plurality of lateral ribs provided in parallel to the short foot portion of the seedling box body crossing the lateral rib The vertical ribs of the book are symmetrical to the left and right lines with respect to the central vertical axis of the seedling box body, and the central horizontal axis is And a plurality of rib outline bodies formed in a substantially rectangular shape on the bottom surface so as to be symmetrical with respect to the vertical line. In the synthetic resin nursery box in which the width between the vertical ribs or between the vertical ribs is narrowed, the oblique ribs are arranged obliquely in parallel with the left and right lines symmetrically with respect to the central longitudinal axis. A plurality of transverse ribs are provided on the back side of the seedling box main body, and the longitudinal ribs intersecting with the transverse ribs are arranged so as to be crossed together and provided in the inner area of each rib outer body. A plurality of rib outlines formed in a substantially rectangular shape on the bottom surface, and a plurality of oblique ribs that intersect with each other in the inner area of the rib outline so that the inclination direction is obliquely parallel to the central longitudinal axis And the rib outer body and the diagonal rib cooperate to Left and right reinforcing as rib structure becomes sufficiently against external forces from any direction from the vertical. For this reason, it is possible to surely prevent shrinkage due to the physical characteristics of the synthetic resin and deformation of the thin seedling box main body in the raised bottom form to a middle height or warpage or distortion. And since the leveling of a seedling box main body is guaranteed, the water retention ability permeated into the floor soil accommodated in the seedling box main body or the floor soil is made uniform. In addition, on the back surface of the seedling box body, a number of recesses are formed in the inner area of the rib outer body composed of vertical ribs and horizontal ribs, and adjacent recesses provided on the front, rear, left, and right side are provided with vertical ribs and horizontal ribs. A plurality of oblique ribs that are separated from each other by the ribs and that intersect with each other are arranged obliquely in parallel to the left and right lines with respect to the central longitudinal axis in the inner area of the rib outer body. As a result, a further subdivided small concave portion is formed in the concave portion, so that an air layer is formed in the concave portion, that is, in all the small concave portions, so that the heat retaining property is exhibited. The roots of young seedlings are cultivated uniformly and healthy. Moreover, there is no root rot due to excessive moisture, and healthy seedlings can be grown. Furthermore, since the leveling of the seedling box body is guaranteed, it can be reliably transferred and transported to the automatic seeding machine, and the setting position of the seedling box with respect to the rice planting machine after seedling can be set appropriately. Grasping with the crank claws of the rice planting machine is ensured, and the work efficiency at the time of rice planting can be improved.

  According to the invention described in claim 2 of the present invention, the oblique ribs are lower than the longitudinal ribs and the transverse ribs, the first oblique ribs disposed at a desired bottom surface, and the first ribs. It is characterized in that it is composed of two types of combinations of a second oblique rib that is lower in height than the one oblique rib and arranged between the first oblique ribs. Any direction from front / rear, left / right, top / bottom where a rib outer body formed by vertical and horizontal ribs provided on the back surface of the box body and an oblique rib disposed in the inner area of the rib outer body cooperates. Although the seedling box body is light in weight against external force, the rib structure is sufficiently reinforced.

  For this reason, it is possible to surely prevent shrinkage due to the physical characteristics of the synthetic resin and deformation of the thin seedling box main body in the raised bottom form to a middle height or warpage or distortion. And since the leveling of a seedling box main body is guaranteed, the water retention ability permeated into the floor soil accommodated in the seedling box main body or the floor soil is made uniform. In addition, on the back surface of the seedling box body, a number of recesses are formed in the inner area of the rib outer body composed of vertical ribs and horizontal ribs, and adjacent recesses provided on the front, rear, left, and right side are provided with vertical ribs and horizontal ribs. In addition to being separated from each other by the ribs, in addition, in the inner area of the rib outer body, there are a large number of oblique ribs that intersect with each other so that the inclination direction is arranged obliquely in parallel to the left and right lines with respect to the central longitudinal axis. A first slant rib having a medium height which is lower than the vertical ribs and the horizontal ribs and is disposed at a desired bottom surface, and a lowest height first rib disposed between the first slant ribs. By using the two oblique ribs in combination, the inside of the recess portion is further subdivided to form a small recess portion that is communicated with, so an air layer is formed in the recess portion. At the same time, all the small recesses can communicate with each other, and air circulation in the recesses is good. Now, warmth is to be exhibited efficiently, the roots of young seedlings is uniformly healthy development. Moreover, there is no root rot due to excessive moisture, and healthy seedlings can be grown. Furthermore, since the horizontal axis of the seedling box main body is ensured by providing diagonal ribs symmetrically in the horizontal axis with respect to the central longitudinal axis, it can be reliably transferred and transported to and from the automatic seeder. Moreover, since the setting position of the seedling box with respect to the rice planting machine after raising seedlings can be set appropriately, the raising of the seedlings by the crank claws of the rice planting machine is ensured, and the work efficiency at the time of rice planting can be improved.

  Further, according to the invention described in claim 3 of the present invention, the lateral ribs are arranged in parallel with two or two or more parallel parallel legs facing in the longitudinal direction of the seedling box body, Since at least one line is arranged substantially in line with the central horizontal axis, the contact area with the rollers, belts, etc. of the conveyor is increased, and the seedling box body is transferred and transported without causing slippage. Can be done quickly and reliably. Therefore, it is convenient for transferring and transporting the seedling box body when automatic seeding is performed by the automatic seeder, or for transferring and transporting the seedling box body after seedling in the house.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings.

  1 is a plan view showing Embodiment 1 of the synthetic resin nursery box of the present invention, FIG. 2 is a perspective view of the synthetic resin nursery box, FIG. 3 is a perspective view of the synthetic resin nursery box as seen from the back side, and FIG. Is a back view of the synthetic resin nursery box, FIG. 5 is an explanatory back view of the synthetic resin nursery box, FIG. 6 is a front view of the synthetic resin nursery box, and FIG. 7 is a side view of the synthetic resin nursery box. 8 is a sectional view taken along the line AA of FIG. 4, FIG. 9 is a sectional view taken along the line BB of FIG. 4, and FIG. 10 is a synthetic resin nursery box of the first embodiment and a conventional synthetic resin nursery box having a deep depth. FIG. 11 is a graph in which the change in ground temperature over time between the synthetic resin nursery box of Embodiment 1 and the conventional synthetic resin nursery box is measured with a thermometer, FIG. 12 is a partially cutaway plan view showing Embodiment 2 of the synthetic resin nursery box of the present invention, and FIG. It is a cross-sectional view.

  In FIG. 1, the synthetic resin nursery box according to the first embodiment has side edges 2a, 2a; 2b, 2b arranged around the front, rear, left and right, and a lower surface surrounded by the side edges 2a, 2a; 2b, 2b. A bottom plate 3 provided, a raised bottom-type seedling box main body 1 formed in a substantially box shape having legs 4a, 4a; 4b, 4b installed around the front, rear, left and right below the bottom plate 3, and the bottom plate 3 on the surface of the projection 3 having a plurality of drainage holes 5 arranged in parallel as appropriate in the design, a recess 7 provided between the projections 6, and the foot 4 a on the back side of the bottom plate 3. , 4a; a plurality of lateral ribs 8, 8... Parallel to the long legs 4a, 4a arranged in the longitudinal direction X of the seedling box body 1 in the inner region surrounded by 4b, 4b, A plurality of vertical ribs 9, 9 provided in parallel to the short legs 4b, 4b of the seedling box body 1 crossing the horizontal ribs 8, 8. ... and a plurality of the bottom-raised rectangles that are symmetrical with respect to the central vertical axis O of the seedling box body 1 and that are symmetrical with respect to the vertical axis with respect to the central horizontal axis P. Rib outer bodies 10A, 10B, 10C, 10D ...; 10'A, 10'B, 10'C, 10'D ... and the rib outer bodies 10A, 10B, 10C , 10D... 10′A, 10′B, 10′C, 10′D..., 10b, 4b, 4b; The widths W1, W1; W2, W2; W3, W3; W4, W4,... Between the longitudinal ribs 9, 9,. It is a synthetic resin nursery box.

  In addition, in the synthetic resin nursery box of Embodiment 1 shown in FIG. 1 thru | or FIG. 11, the protruding item | line part 6 which has the drainage hole 5 of the seedling box main body 1 is arranged in parallel with the pattern on the surface of the baseplate 3, suitably in the illustration. However, the present invention is not limited to this, and although not shown in the drawing, a convex portion having one or more drain holes 5 may be provided on the surface of the bottom plate 3 instead of the convex strip portion 6. Similarly, in the synthetic resin seedling box of the first embodiment shown in FIGS. 1 to 11, a groove 7 is appropriately formed on the surface of the bottom plate 3 between the protrusions 6 of the seedling box body 1. However, the present invention is not limited to this, and instead of the recess 7, a plurality of recesses may be provided in parallel.

  Further, as the synthetic resin, for example, a polypropylene resin, a polycarbonate resin, a vinyl chloride resin or the like as a thermoplastic resin is used, which is almost the same as the conventional nursery box shown in Patent Document 1.

  However, in the synthetic resin nursery box of the first embodiment, the oblique ribs 11A... 11′A. And a plurality of rib outer bodies 10A, 10B, 10C, 10D...; 10'A, 10'B, 10'C, 10'D. And

  Further, as shown in FIGS. 8 and 9, the seedling box body 1 has a depth W from the upper ends of the peripheral side edges 2a, 2a; 2b, 2b to the bottom plate 3 of about 2 cm, The height h1 from the lower end of the foot portions 4a, 4a; 4b, 4b to the bottom plate 3 is about 1.8 to 2 cm.

  In addition, two or more horizontal ribs 8 are arranged in parallel to the opposite leg portions 4a, 4a in the longitudinal direction X of the seedling box body 1, and are substantially equal to the central horizontal axis P. Then, at least one is arranged (see FIGS. 3, 4, and 5).

  As described above, two or two or more parallel legs are arranged in parallel to the legs 4a, 4a facing the longitudinal direction X of the seedling box main body 1, and at least one substantially coincides with the central horizontal axis P. Are arranged so that the contact area of the lateral ribs 8, 8, 8... With the rollers, belts, etc. (not shown) of the conveyor increases, and the seedling box body 1 can be transported and transported without slipping. This is to perform quickly and reliably. Therefore, it is convenient to transfer and carry the seedling box body 1 when carrying out automatic sowing with an automatic seeder, or to transfer and carry the seedling box body 1 after raising seedlings in the house.

  The vertical ribs 9 and the horizontal ribs 8 are formed to have the same size and a high height h2, and the inclined ribs 11A... 11′A. A first slanted rib R1 having a medium height h3 disposed at a desired interval on the bottom surface and the first slanted rib R1, R1... Two oblique ribs R2 are used in combination.

  In this way, the ribs 10A, 10B, 10C, 10D...; 10′A, 10′B, 10′C, 10′D. The ribs 8 are formed with the same size and a high height h2, and the inclined ribs 11A... 11′A... Are lower than the vertical ribs 9 and the horizontal ribs 8 and are arranged at desired bottom intervals. Of the first slanted rib R1 having a medium height h3 and the second slanted rib R2 having the lowest height h4 disposed between the first slanted ribs R1, R1,. What is comprised of the combination of the ribs 10A, 10B, 10C, 10D... Formed by the vertical ribs 9 and the horizontal ribs 8 provided on the rear surface of the raised-bottom seedling box body 1; 10'A, 10'B, 10'C, 10'D ... and the rib outer bodies 10A, 10B, 10C, 10D ... 10′A, 10′B, 10′C, 10′D... Are arranged in the inner region of the oblique ribs 11A...; This is because the seedling box main body 1 is light in weight against any external force from any of these directions, but the rib structure is sufficiently reinforced to make the structure robust.

  The installation angle θ, the interval, and the number of use of the large number of oblique ribs 11A... 11′A are not limited to those shown in the figure and can be freely set.

  Reference numeral 12 denotes a rib outer body 10A, 10B, 10C, 10D...; 10'A, 10'B, 10'C, 10'D composed of vertical ribs 9 and horizontal ribs 8 on the back surface of the seedling box body 1. Are a number of recesses formed in the inner area of. Reference numeral 13 denotes a rib outer body 10A, 10B, 10C, 10D ...; 10'A, 10'B, 10'C, 10'D ... in the inner region of the rib outer bodies 10A, 10B, 10C, 10D...; 10'A, 10'B, 10'C, 10'D... Are inclined parallel to the central longitudinal axis O in a slanting parallel to the central longitudinal axis O. A plurality of small recess portions formed by further subdividing the recess portion 12 by providing a large number of crossed oblique ribs 11A... 11′A.

  In this way, the rib outer body 10A, 10B, 10C, 10D...; 10'A, 10'B, 10'C, 10'D. , 10B, 10C, 10D...; 10'A, 10'B, 10'C, 10'D... By forming a large number of oblique ribs 11A... 11′A. This is because, by providing all the small recess portions 13 in the above, a subdivided air layer is formed to enhance the heat retention and to grow the seedling roots uniformly and soundly.

  14 is the side edges 2a, 2a; 2b, 2b between the inner periphery of the side edges 2a, 2a; 2b, 2b and the outer periphery of the legs 4a, 4a; 4b, 4b. It is a plurality of height positioning ribs that are laid across the inner peripheral surface and the outer peripheral surfaces of the feet 4a, 4a; 4b, 4b. The height positioning rib 14 extends from the upper end to the lower end 14a. When the empty seedling box main body 1 is stacked, the height of the upper seedling box main body 1 is increased when the length of the legs 4a, 4a; 4b, 4b is formed shorter than the lower end 14a. The lower end portion 14a of the positioning rib 14 is placed on the upper surface on the inner peripheral side of the side edge portions 2a, 2a; 2b, 2b of the lower seedling box main body 1 so that the side around the upper seedling box main body 1 is placed. Between the lower ends of the edge portions 2a, 2a; 2b, 2b and the upper surfaces of the side edge portions 2a, 2a; 2b, 2b around the lower seedling box body 1 In order to make the upper nursery box body 1 easy to carry by inserting a fingertip into the gap so that a slight gap is left in the gap.

  Embodiment 1 of the present invention has the above-described configuration, and the rear surface of the seedling box body 1 has an inner area surrounded by feet 4a, 4a; 4b, 4b, as shown in FIGS. A plurality of horizontal ribs 8, 8... Parallel to the long legs 4 a, 4 a arranged in the longitudinal direction 1, and the seedling box body crossing the horizontal ribs 8, 8. .. Are symmetrical with respect to the central longitudinal axis O of the seedling box main body 1 by means of a plurality of vertical ribs 9, 9.. A plurality of rib outer bodies 10A, 10B, 10C, 10D...; 10'A, 10'B, 10'C, 10'D .. are formed, and the ribs 10A, 10B, 10C, 10D...; 10'A, 10'B, 10'C, 10'D. Since a plurality of oblique ribs 11A,..., 11′A,... Are arranged obliquely parallel to the left and right with respect to the central longitudinal axis O, rib outer bodies 10A, 10B,. 10C, 10D ...; 10'A, 10'B, 10'C, 10'D ... and slanted ribs 11A ...; 11'A ... cooperate to demonstrate rigidity and tensile force However, the reinforcement as the rib structure is sufficiently exerted against the external force from any of the front, rear, left, and right directions, and the structure becomes robust.

  Therefore, for example, due to the physical properties of synthetic resins such as polypropylene resin, polycarbonate resin, and vinyl chloride resin as thermoplastic resins, it is shrunk after thermoforming, or the thin nursery box body 1 in the raised bottom form is deformed to a medium to high height And warpage and distortion can be reliably prevented. And since the leveling of the seedling box main body 1 is guaranteed, the water content of the floor soil accommodated in the seedling box main body 1 and the irrigation water permeating into the floor soil is made uniform more than one piece. The seedlings that sprouted without root rot are grown with the roots spread in all directions, so that the seedlings can be planted in paddy fields, and then the healthy seedlings can be cultivated smoothly.

  The graph shown in FIG. 10 shows a conventional synthetic resin as a comparative example having a depth of about 3 cm from the upper edge to the bottom plate of the synthetic resin seedling box of the first embodiment and the surrounding side edge not shown in the figure. This is a summary of observed water retention over time with the nursery box. For observations, select a total of 3 days with 2 sunny days in the second half of April and one cloudy day in the morning, and after sufficient irrigation on the morning of the first sunny day, water per box over time The decrease in weight is observed. Then, when the seedlings grown in the seedling box began to crawl, it was determined that the water retention amount became zero. In addition, non-fertilized red soil was used for the floor soil (culture soil), and the irrigation method, the number of irrigation times, and the irrigation time were the same for the nursery box of the first embodiment and the synthetic resin nursery box of the comparative example.

  Then, from the graph shown in FIG. 10, the depth from the upper edge of the surrounding side edge portions 2a, 2a; 2b, 2b to the bottom plate 3 is as deep as about 3 cm, and the amount of floor soil is large as a comparative example. In the conventional synthetic resin nursery box and the synthetic resin nursery box of the first embodiment, which has a lower floor soil capacity than this synthetic resin nursery box, the time point at which the grown seedling begins to sway and the water retention amount becomes 0 is almost the same. It's time. Therefore, it was found that the nursery box of the first embodiment has a sufficient water retention amount and is suitable for raising seedlings although the amount of floor soil contained is smaller than that of the synthetic resin nursery box of the comparative example.

  Further, as shown in FIG. 4 and FIG. 5, rib outer bodies 10A, 10B, 10C, 10D...; , 10′B, 10′C, 10′D... Are formed in the inner region, so that the adjacent recesses 12 provided on the front, rear, left and right are formed by the vertical ribs 9 and the horizontal ribs 8. And the rib outer bodies 10A, 10B, 10C, 10D...; 10'A, 10'B, 10'C, 10'D. A plurality of oblique ribs 11A..., 11'A... Are arranged so as to be obliquely parallel to the left and right with respect to the central longitudinal axis O. The longitudinal ribs 9 and the transverse ribs 8 are crossed. The first oblique rib R1 having a medium height h3 which is lower than the bottom and is disposed at a desired interval, and is appropriately disposed between the first oblique rib R1. By using a combination of the second slanted rib R2 having the lowest height h4, the recessed portion 12 is further subdivided to form a small recessed portion 13 which is communicated. Therefore, an air layer is formed in the recess portion 12 and the inside of the small recess portion 13 can be communicated with each other, so that air circulation in the recess portion 12 is improved and heat retention is efficiently exhibited. Therefore, the seedling roots are cultivated uniformly and healthy.

  The graph shown in FIG. 11 is a comparative example in which the depth W from the upper edge of the synthetic resin nursery box of the first embodiment and the peripheral side edges 2a, 2a; 2b, 2b to the bottom plate 3 is about 3 cm. It is a result of measuring and comparing a change in ground temperature over time between a conventional synthetic resin nursery box and outside air temperature using a thermometer.

  From the graph shown in FIG. 11, the depth from the upper edge to the bottom plate of the surrounding side edge is as deep as about 3 cm, and a conventional nursery box as a comparative example with a large amount of floor soil, and this nursery box Although the amount of floor soil is small, rib outer bodies 10A, 10B, 10C, 10D... 10′A, 10′B, which are composed of vertical ribs 9 and horizontal ribs 8 on the back surface of the seedling box main body 1; A large number of recesses 12 are formed in the inner region of 10'C, 10'D ..., and rib outer bodies 10A, 10B, 10C, 10D ...; 10'A, 10'B , 10'C, 10'D ..., the inclined direction is arranged obliquely in parallel to the left and right of the central longitudinal axis O, and obliquely parallel to the central longitudinal axis O. ′ A... Is lower than the vertical ribs 9 and the horizontal ribs 8 and has a first slanted rib having a middle height h3 arranged at a desired bottom surface interval. The recess 12 is further subdivided by using a combination of the two types of the rib R1 and the second diagonal rib R3 having the lowest height h4 disposed between the first diagonal ribs R1. By forming a large number of small recess portions 13 communicated with each other, an air layer is formed in the recess portion 12 and the inside of all the small recess portions 13 can communicate with each other. With the seedling box of the present embodiment 1 in which the air circulation in the inside is good, the heat retention of the seedling box of the present embodiment 1 is good despite the small amount of floor soil accommodated, and is suitable for raising seedlings. I understood it.

  Furthermore, as described above, on the back surface of the seedling box body 1, the long foot part in which the inner region surrounded by the foot parts 4 a, 4 a; 4 b, 4 b is arranged in the longitudinal direction X of the seedling box body 1. A plurality of horizontal ribs 8, 8... Parallel to 4a, 4a, and provided in parallel to the short legs 4b, 4b of the seedling box body 1 across the horizontal ribs 8, 8. The vertical ribs 9, 9... Are symmetrical to the left and right lines with respect to the central vertical axis O of the seedling box main body 1 and have a substantially rectangular bottom surface symmetrical to the vertical lines with respect to the central horizontal axis P. A plurality of formed rib outer bodies 10A, 10B, 10C, 10D ...; 10'A, 10'B, 10'C, 10'D ... are formed, and the rib outer bodies 10A, 10B, 10C, 10D...; 10'A, 10'B, 10'C, 10'D ... in the inner region, the inclination direction is diagonally symmetrical with respect to the central longitudinal axis O. Since a large number of oblique ribs 11A..., 11'A... Arranged in parallel are provided, the thin seedling box main body 1 is reduced in size due to the physical characteristics of the synthetic resin or in the raised bottom form. It is possible to reliably prevent deformation and warping and distortion. Moreover, since the leveling of the seedling box main body 1 is guaranteed, it can be reliably transferred and transported to and from the automatic seeder.

  At this time, the lateral ribs 8 are arranged in parallel to the foot portion 2a in the longitudinal direction X of the seedling box main body 1 and two or more in parallel to the foot portion 2a, and the central lateral axis P Since at least one of them is arranged substantially in agreement, the contact area with the rollers, belts, etc. of the conveyor is increased, and the seedling box body 1 can be transferred and transported quickly and reliably without slipping. Therefore, when performing automatic sowing with an automatic sowing machine, it is convenient to transfer and carry the seedling box body 1 or to transfer and carry the seedling box body 1 after raising seedlings in the house.

  Further, as described above, on the back surface of the bottom plate 3 of the seedling box main body 1, a plurality of horizontal ribs 8, 8... A plurality of rib outlines that are symmetrical with respect to the longitudinal axis O of the book and that are symmetric with respect to the left and right lines with respect to the central longitudinal axis O and that are symmetrical with respect to the vertical line with respect to the central lateral axis P. 10A, 10B, 10C, 10D ...; 10'A, 10'B, 10'C, 10'D ... are formed, and this rib outer body 10A, 10B, 10C, 10D ...; 10 ' In the inner area of A, 10'B, 10'C, 10'D, ..., a number of oblique ribs intersecting with the inclination direction arranged obliquely in parallel with the central longitudinal axis O in the left-right direction. Since 11A ...; 11'A ... is provided, the leveling of the seedling box main body 1 is guaranteed, so that the rice planting machine after the seedling is raised Can be properly set a set position of the box, it has been made to ensure that seedling grasping by crank pawl relative rotational locus of the crank nail rice transplanter, it is possible to improve the work efficiency during rice transplanting.

  12 and 13 show a second embodiment of the synthetic resin nursery box of the present invention. In the second embodiment, for example, a bowl-shaped ridge 6 and a large number of recesses 7 ′ are formed on the surface of the bottom plate 3 of the seedling box body 1. The recess 7 'has a large installation area in the center of the seedling box main body 1 in order to increase water retention at the side edges 2a, 2a; 2b, 2b around the seedling box main body 1 that are easily dried during seedling raising. As the rib structure provided on the back surface side of the bottom plate 3 of the seedling box main body 1 is relatively high with respect to the front / rear, left / right, top / bottom external forces. The seedling box body 1 is guaranteed to be horizontal, and the floor soil accommodated in the seedling box body 1 and the irrigation permeated into the floor soil are surely prevented. The water-retaining ability of water is made uniform, and there is no root rot due to excessive water content. Rib outer bodies 10A, 10B, each comprising a vertical rib 9 and a horizontal rib 8. 10C, 10D ...; 10'A, 10'B, 10'C, 10'D ... are formed with a large number of recesses 12 ..., and the rib outer bodies 10A, 10B are formed. , 10C, 10D ...; 10'A, 10'B, 10'C, 10'D ... in combination with two types of first oblique rib R1 and second oblique rib R2 The small recess portion 13 is formed by further subdividing the recess portion 12 by using it, and an air layer is formed in the recess portion 12 so that the heat retention of the seedling box is small in the amount of floor soil contained. However, the configuration, operation, and effects are the same as those of the first embodiment, such as being favorable.

  In addition, in the synthetic resin nursery box of Embodiment 1 shown in FIG. 1 thru | or FIG. 11, the protruding item | line part 6 which has the drainage hole 5 of the seedling box main body 1 is arranged in parallel with the pattern on the surface of the baseplate 3, suitably in the illustration. However, the present invention is not limited to this, and although not shown in the drawing, the drainage holes 5 may be provided in the convex portions arranged in parallel on the surface of the bottom plate 3 instead of the convex strip portions 6.

  The present invention has a central vertical direction in the inner area of a plurality of rib outer bodies formed into a substantially rectangular bottom by a plurality of horizontal ribs on the back side of the seedling box body and vertical ribs intersecting the horizontal ribs. By providing a large number of diagonal ribs arranged diagonally parallel to the left and right axis symmetrically with respect to the axis, the rib structure is sufficiently reinforced, and the physical properties of the synthetic resin are reduced, and the bottom type is thin This prevents the seedling box body from being deformed to mid-high, warps or warps, and guarantees levelness, and keeps the floor soil contained in the seedling box body and the irrigation permeated into the floor soil. The hydraulic power is more uniform than one piece, the roots grow uniformly and soundly, and there is no root rot due to excessive moisture, so that healthy seedlings can be nurtured, and the position of the seedling box set relative to the rice planting machine after raising seedlings Can be set properly, Suitable for use and functions thereby improving the work efficiency of time.

FIG. 1 is a plan view showing Embodiment 1 of the synthetic resin nursery box of the present invention. FIG. 2 is a perspective view of the synthetic resin nursery box. FIG. 3 is a perspective view of the synthetic resin nursery box as seen from the back side. FIG. 4 is a rear view of the synthetic resin nursery box. FIG. 5 is an explanatory back view of the synthetic resin nursery box. FIG. 6 is a front view of the synthetic resin nursery box. FIG. 7 is a side view of the synthetic resin nursery box. FIG. 8 is a cross-sectional view taken along the line AA in FIG. FIG. 9 is a cross-sectional view taken along the line BB in FIG. FIG. 10 is a graph obtained by observing the amount of water retained over time of the seedling box of Embodiment 1 and the conventional synthetic resin seedling box having a deep depth. FIG. 11 is a graph in which the change in the ground temperature over time between the outside temperature of the synthetic resin nursery box of this embodiment and the conventional synthetic resin nursery box is measured with a thermometer. FIG. 12 is a partially cutaway plan view showing Embodiment 2 of the synthetic resin nursery box of the present invention. FIG. 13 is an enlarged sectional view of the same.

Explanation of symbols

1 Nursery box body
2a outer edge 2b outer edge
3 Bottom plate
4a Foot
4b Foot 5 Drainage hole 6 Convex section 7 Concave section 8 Horizontal rib 9 Vertical rib 10A Rib outer body 10B Rib outer body 10C Rib outer body 10D Rib outer body 11A Inclined rib 11B Inclined rib 11C Inclined rib 12 Recessed section 13 Small recess portion R1 First diagonal rib R2 Second diagonal rib W1 width W2 width W3 width X longitudinal direction

Claims (3)

(A) A substantially box shape having side edge portions arranged around the front, rear, left and right, a bottom plate provided on a lower surface surrounded by the side edge portions, and feet placed around the front, rear, left and right below the bottom plate A raised seedling box body formed in a raised bottom, and (b) a convex portion having a number of drainage holes arranged in a pattern as appropriate on the surface of the bottom plate, and a convexity portion having one or more drainage holes. A concave portion provided between the convex portions, or a concave portion provided between the convex portions, and (c) an inner region surrounded by the foot portion on the back side of the bottom plate of the seedling box body A plurality of horizontal ribs parallel to the long legs disposed in the longitudinal direction, and a plurality of vertical ribs provided in parallel to the short legs of the seedling box body crossing the horizontal ribs , The right and left lines are symmetrical with respect to the central vertical axis of the seedling box body, and the vertical lines are symmetrical with respect to the central horizontal axis. A plurality of rib outer bodies formed in a substantially rectangular shape on the bottom surface, and the rib outer bodies are between the leg portions and the vertical ribs that are shorter as they approach the central longitudinal axis. Or, in the synthetic resin nursery box in which the width between the vertical ribs is narrowed,
Synthetic resin characterized in that a large number of oblique ribs are arranged obliquely in parallel with the horizontal axis with respect to the central longitudinal axis, and are arranged in a crossing manner in the inner region of each rib outer body. Nursery box.   The diagonal ribs are lower than the vertical ribs and the horizontal ribs, and are arranged at a desired interval on the bottom surface, and the first diagonal ribs are lower in height than the first diagonal ribs. The synthetic resin nursery box according to claim 1, wherein the synthetic resin nursery box is composed of two kinds of combinations of a second oblique rib disposed between the two.   The horizontal ribs are arranged in parallel with two or more parallel legs in the longitudinal direction of the seedling box body, and at least one is arranged substantially in line with the central horizontal axis. The synthetic resin nursery box according to claim 1 or 2, wherein

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