JP2012147756A - Plant holding tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a plant holding tool allowing to stably implant plants of various diameters by dropping them from an aircraft on a denuded land in a mountainous area making a person and a machine hardly go in, and to improve a regenerative greening ratio of the denuded land.SOLUTION: The plant holding tool is obtained by installing each a first insertion hole 11a and a second insertion hole 21a for tightening/holding a plant, on the top board of a body part 10 and the top wall of an upper cover part 20 in an eccentric condition from each center of the body part and the upper cover part, and installing a plurality of body part side ratchet nails 11b on the outer peripheral part of the top board upper surface of the body part 10, and a plurality of upper cover part side ratchet nails 21b on the outer peripheral part of the top wall lower surface of the upper cover part 20 so as to form a ratchet mechanism thereby. Furthermore, a weight part 40 with a tapered shape edge, which has an inner space 40a for holding soil promoting plant growth in the inside, is attached to the body part 10 and fixed with a fixation ring 30.

Description

  The present invention makes it possible to drop a plant of various diameters from an aircraft on an inclined surface or a collapsed area of a mountain area where humans or machines are difficult to enter, and to stably plant the plant, and the revegetation rate of the collapsed area It is related with the plant holder which can improve suitably.

The so-called aerial revegetation method, in which green seedlings or seeds are dropped or sprayed from aircraft on mountainous areas where people and machines are difficult to enter, due to landslides, etc. It has been known.
As an aerial planting container for dropping seedlings from an aircraft, an inverted cone made of iron mesh or a plant or plastic or other material formed into a cage or mesh shape, with the tip (vertex) pointing vertically downward An aerial planting container having a weight at the tip is known (see Patent Document 1).
In addition, as a container for aerial greening, a seedling pot body having a conical cylinder shape or a polygonal pyramid cylinder shape is formed from corrugated cardboard, and a seedling pot is formed by interiorizing the seedling pot body with a water retaining body and a fertilizer body. An aerial drop seedling pot in which a spiral blade is formed on the outer peripheral surface of the seedling pot is known (see Patent Document 2).
In addition, as another aerial planting container, a cylinder containing seedlings and soil is formed in an inverted conical shape with paper or tinplate, and a number of small holes are drilled on the outer peripheral surface of the cylinder, and the upper end opening of the cylinder is further opened. In addition, a tree planting cylinder is known that is formed by fitting a split lid having a circular hole in the center (see Patent Document 3).

JP 49-18615 A Japanese Patent No. 2553419 Japanese Patent Laid-Open No. 51-122901

The container for aerial greening in the above-mentioned document 1 does not include a holding means for pressing the root part of the seedling. Therefore, when dropped from an aircraft, there is a risk that the seedlings may fall out of the container or the soil due to air resistance (wind pressure) during the fall. Therefore, there is a problem that the revegetation rate of the collapsed land and the like does not improve so much with respect to the number of seedlings dropped.
Moreover, since the container for aerial greening of the said literature 2 is not provided with the holding means which hold | suppresses the root part of a seedling, there exists a possibility that a seedling may slip out of soil or a container by wind pressure in the middle of dropping. Furthermore, since the container body is made of corrugated cardboard, after the container collides with the soil, the container is deformed and cannot enter deep into the soil, and as a result, the seedlings may not be able to settle down stably in the soil. As with the aerial planting container of the above-mentioned document 1, there is a problem that the replanting rate of the collapsed land and the like is not improved so much.
As described above, the aerial planting containers of the above-mentioned literature 1 and literature 2 are all easily affected by the wind pressure during the fall and the impact at the time of landing, and the revegetation rate of the collapsed land etc. with respect to the number of seedlings dropped is high. There is a problem that it is not necessarily expensive.
On the other hand, in the case of the tree planting cylinder of the above-mentioned document 3, it is considered that the seedlings are less likely to escape from the cylinder or the soil due to air resistance during the fall because the split lid is provided to hold the root of the seedling.
However, in the case of the above-mentioned tree planting cylinder, the hole diameter of the split-type lid is constant. Therefore, when the diameter of the seedling is larger than the hole diameter of the lid, the split-type lid cannot be attached to the cylinder containing the seedling. That is, in the case of the above-mentioned tree planting cylinder, since a seedling larger than the hole diameter of the lid cannot be accommodated in the cylinder, there is a problem that it cannot be dropped from the aircraft. As a result, there is a problem that seedlings of various diameters cannot be planted in the collapsed land.
Therefore, the present invention has been devised in view of the above-mentioned conventional problems, and its purpose is to drop seedlings of various diameters from aircraft on slopes and collapsed areas in mountains where humans and machines are difficult to enter. It is intended to provide a plant holder that can be stably planted and can suitably improve the regeneration greening rate of a collapsed area.

In order to achieve the above object, the plant holder according to claim 1 includes a weight part having an internal space for accommodating soil and fertilizer necessary for plant growth, and a main body part attached to an upper part of the weight part. And a plant holder provided with an upper lid part rotatably attached to the upper part of the main body part,
The main body portion is composed of a top plate portion and a cylindrical side wall portion depending from the periphery of the top plate portion, and the lower end side thereof is opened,
The upper lid part is composed of a top wall part and a cylindrical wall part depending from the periphery of the top wall part,
The top plate portion of the main body portion and the top wall portion of the upper lid portion have a first insertion hole and a second insertion hole for holding plants that are eccentric with respect to the centers of the main body portion and the upper lid portion, respectively. It is provided in a state.
Since the plant holder has an internal space for storing soil and fertilizers necessary for plant growth, even if the plant still does not have enough roots to take up nutrients, You will be able to get the nutrients you need to grow. As a result, the plant grows to some extent inside the container, and then descends and propagates in the dropped area. This contributes to an improvement in the revegetation rate in the dropped area, and the plant has an eccentric first insertion. It is tightened and held in the overlapping opening portion of the hole and the second insertion hole. On the other hand, since the upper lid is rotatably fitted to the main body portion, it is possible to expand or narrow the overlapping opening portion by rotating the upper lid and accommodate plants of various diameters. It becomes like this.

In the plant holder according to claim 2, a plurality of main body side ratchet claws are formed on the outer peripheral portion of the upper surface of the top plate portion of the main body portion, and on the outer peripheral portion of the lower surface of the top wall portion of the upper lid. A plurality of upper lid portion side ratchet claws that engage with the main body portion side ratchet pawl are formed, and the upper lid portion side ratchet pawl and the main body portion side ratchet pawl constitute a ratchet mechanism.
In the above plant holder, since the ratchet mechanism is configured by the main body side ratchet pawl and the upper lid side ratchet pawl, after the plant is once fastened to the overlapping opening portion of the first insertion hole and the second insertion hole, the tightening is performed. The state is suitably maintained. Therefore, the eccentric first and second insertion holes and the ratchet mechanism can stably clamp and hold plants of various diameters in the overlapping opening portion.

In the plant holder according to claim 3, one of the plurality of main body side ratchet claws or the plurality of upper lid side ratchet claws is disposed at equal intervals in the circumferential direction, and the other is unequal intervals. It was decided that it was arranged.
In the plant holder, by arranging one of the main body side ratchet pawl or the upper lid side ratchet pawl at equal intervals in the circumferential direction and the other at unequal intervals, for example, each upper lid Each distance to the main body side ratchet claw nearest to the main part side ratchet claw is preferably distributed within the interval of the main body side ratchet claw, and the smallest value among these distances when the upper lid returns. Any one of the upper lid side ratchet claws corresponding to (minimum value) always comes into contact (impacts) first, and the return amount of the upper lid (nail) is suitably reduced. As a result, the plant can be stably clamped and held in the overlapping opening portion of the first insertion hole and the second insertion hole.

The plant holder according to claim 4, wherein the inner wall surface of the top plate portion of the main body portion defining the first insertion hole or the inner wall surface of the top wall portion of the upper lid portion defining the second insertion hole. Saw teeth are formed on at least one of the inner wall surfaces.
In the plant holder, a saw tooth is formed on the inner wall surface of at least one of the insertion holes, so that the plant can be stably clamped and held in the overlapping opening portion.

In the plant holder according to claim 5, the weight part is made of iron or an alloy thereof, and the bottom part of the weight part has a tapered shape.
In the said plant holder, since the weight part is made from iron or its alloy, specific gravity is large and rigidity and intensity | strength become high compared with the plant holder which consists of a steel net or a corrugated cardboard. Therefore, when the plant holder is dropped from an aircraft, the plant holder is less susceptible to the wind pressure during the fall and the impact when landing, so that it can penetrate deeply into the drop area and the plant is stable. You will be able to take roots in the ground. As a result, the revegetation rate of the landslides in mountainous areas is preferably improved. Moreover, in the said plant holder, since the weight part has a thin shape, when the plant holder is dropped from an aircraft, it will be able to penetrate deeply into the ground of the dropped area, and the plant will be stable. You will be able to take roots in the ground.

According to the plant holder of the present invention, the insertion hole is provided in each of the top plate portion of the main body portion and the top wall portion of the upper lid portion in a state of being eccentric from each center, and further, the opposing top wall portion and the top plate portion A plurality of upper lid portion side ratchet claws and a plurality of main body portion side ratchet claws are provided to constitute a ratchet mechanism. Therefore, after the upper lid is rotated and the plant is once tightened to the overlapping opening portion of both eccentric holes, the tightened state is suitably maintained. In other words, according to the present plant holder, plants of various diameters can be stably clamped and held, and even when dropped from an aircraft, the plant can be detached from the holder due to impact during dropping and landing. There is no.
On the other hand, according to the plant holder of the present invention, the weight part is made of metal such as iron and has a tapered tip, and has an internal space for accommodating soil and fertilizer. For this reason, when a plant is dropped from an aircraft with the plant clamped and held, the plant holder is not easily affected by the wind pressure during the fall and the impact at the time of landing, and can enter deeply into the dropping area such as a collapsed land. As a result, the plant can stably root the soil.
Thus, according to the plant holder of the present invention, when applied to an aerial planting container, plants of various diameters can be stably planted on the collapsed land, etc. It becomes possible to improve a rate suitably.

It is principal part explanatory drawing which shows the main-body part, upper cover part, and fixing ring of the plant holder of this invention. It is explanatory drawing which shows the main-body part which concerns on this invention. It is AA sectional drawing of Fig.2 (a). It is explanatory drawing which shows the upper cover part which concerns on this invention. It is explanatory drawing which shows the clamping | tightening and holding | maintenance state of the plant by the plant holder of this invention. It is explanatory drawing which shows the fixing ring which concerns on this invention. It is half-section explanatory drawing which shows the plant holder of this invention. It is whole section explanatory drawing which shows the plant holder of the state holding the plant. It is an expanded view which shows each arrangement | sequence of the upper cover part side ratchet nail | claw and main body part side ratchet nail | claw which concerns on this invention. FIG. 10 is a development view showing each arrangement of the upper lid side ratchet pawl and the main body side ratchet pawl when the upper lid part moves in the tightening direction by 9 ° from the state of FIG. 9. It is explanatory drawing which shows the correlation with the distance (Y) which reaches | attains the main-body part side ratchet nail | claw which becomes nearest to each upper cover part side ratchet nail | claw with respect to the moving amount | distance to the fastening direction (X) of an upper cover part.

  Hereinafter, the present invention will be described in more detail with reference to embodiments shown in the drawings. Note that the present invention is not limited thereby.

FIG. 1 is an explanatory view showing a main body part, an upper lid part, and a fixing ring of a plant holder of the present invention. In addition, as a plant hold | maintained here, it is set as a tree, bamboo, etc., for example.
The plant holder 100 is attached to a body portion 10 (FIG. 7), which will be described later, and is coaxially attached to the body portion 10 so as to be rotatable, and clamps and holds plants in cooperation with the body portion 10. The upper cover 20 is configured to include a fixing ring 30 that fixes the main body 10 and the weight 40.

  Although details will be described later with reference to FIGS. 2 and 4, the plant is passed through the first insertion hole opened for passing the plant through the top plate of the main body 10 and the top plate of the upper lid portion 20. The second insertion holes that are opened for this purpose are both opened in an eccentric manner with respect to the centers of the main body 10 and the upper lid 20. Therefore, the plant to be held is held at the overlapping opening portion of the first insertion hole and the second insertion hole.

  Moreover, since the upper cover part 20 is rotatably attached to the main body part 10, by rotating the upper cover part 20 in a direction in which the overlapping opening part is narrowed (smaller) or widened (larger), various kinds are obtained. It becomes possible to hold the plant of a diameter in an overlap opening part.

  Further, the main body 10 and the top cover 20 are opposed to each other with a main body side ratchet claw and a plurality of upper lid side ratchet claws engaged therewith, which form a ratchet mechanism. Yes. Therefore, after the upper lid portion 20 is rotated in the tightening direction and the plant is once tightened to the overlapping opening portion of the first insertion hole and the second insertion hole, it can be held so that the tightened state does not loosen. Hereinafter, each configuration will be described.

FIG. 2-3 is an explanatory diagram showing the main body 10 according to the present invention. 2A is a top view thereof, and FIG. 2B is a front view thereof. FIG. 3 is a cross-sectional view taken along the line AA in FIG.
The main body portion 10 is composed of a top plate portion 11 and a cylindrical main body side wall portion 12 extending downward from the periphery of the top plate portion 11, and the lower end side of the main body side wall portion 12 is open. The main body top plate portion 11 has a ratchet mechanism in cooperation with a first insertion hole 11a for holding a plant and a plurality of upper lid portion side ratchet claws 21b hanging from the lower surface of the top wall portion 21 of the upper lid portion 20 described later. A plurality of main body side ratchet claws 11b formed on the top surface of the top plate 11 are provided. Details of the ratchet mechanism will be described later with reference to FIGS.

  The first insertion hole 11a is provided in an eccentric state with respect to the center of the main body top plate portion 11 in order to prevent the plant from tilting. In addition, after the plant is once tightened, the inner wall surface of the top plate portion 11 defining the first insertion hole 11a is axially arranged so that the plant is stably held in the first insertion hole 11a and is difficult to come out of the hole. A plurality of extending saw teeth 11c are formed in the circumferential direction.

  The main body side ratchet claw 11b is provided on the outer peripheral edge side of the top plate part 11 at an equal interval of, for example, 10 °, and the length of the ratchet claw is, for example, 5 ° in terms of the central angle. Therefore, the total number of main body side ratchet claws 11b in the present embodiment is 36 (= 360 ° / 10 °). Moreover, it is preferable that the shape of the main body side ratchet pawl 11b is a substantially trapezoidal shape including an inclined surface inclined in a certain direction, an upright surface extending in the vertical direction, and a horizontal upper surface continuously connecting them.

  As shown in FIG. 2 (b), on the upper outer surface of the side wall portion 12 of the main body, a main body upper groove portion 12a that fits with the upper lid protrusion portion 22a (FIG. 4 (b)) of the upper lid portion 20 is provided in the circumferential direction. A main body lower groove portion 12 c that fits with a circumferential protrusion 31 (FIG. 5) of the fixing ring 30 to be described later is provided on the lower outer surface of the main body side wall portion 12 in the circumferential direction. A plurality of slits 12b functioning as vents or drains for taking in plant roots or carbon dioxide and oxygen are provided on the side surface of the main body side wall portion upward from the lower end of the main body side wall portion 12. It extends in the axial direction.

  As shown in FIG. 3, reinforcing ribs 12 d are provided on the upper inner peripheral surface of the main body side wall portion 12 in a form orthogonal to the inner peripheral surface along the circumferential direction. The strength and rigidity of the upper portion of the main body side wall portion 12 are secured by the reinforcing rib 12d, and when the upper lid portion 20 is rotated in the tightening direction, the main body portion side ratchet claw 11b receives the upper lid portion side ratchet claw 21b, and the plant is stabilized. It can be tightened and held.

  FIG. 4 is an explanatory view showing the upper lid portion 20 according to the present invention. 4A is a top view thereof, FIG. 4B is a half sectional view thereof, and FIG. 4C is a bottom view thereof.

  The upper lid portion 20 includes a top wall portion 21 and an upper lid cylinder wall portion 22 that extends downward from the periphery of the ceiling wall portion 21, and the lower end side of the side wall portion is in an open state. As shown in FIG. 4A, the second insertion hole 21a is eccentric to the center of the top wall 21 so that plants of various diameters can be stably clamped in the top wall 21. Is provided. In addition, after the plant is once tightened, the inner wall surface of the top wall portion 21 defining the second insertion hole 21a is also axially arranged so that the plant is stably held in the second insertion hole 21a and is difficult to come out of the hole. A plurality of saw teeth 21c extending in the circumferential direction are formed. Further, an upper lid protrusion 22 a that fits into the main body upper groove 12 a is formed in the circumferential direction on the lower inner surface of the upper lid cylinder wall portion 22.

  The second insertion hole 21a is provided in an eccentric state in the same manner as the first insertion hole 11a on the opposite main body 10 side. Therefore, in a state where the upper lid portion 20 is fitted to the main body portion 10, the plant is tightened and held in the overlapping opening portion of the first insertion hole 11a and the second insertion hole 21a as shown in FIG. 5 (b). It will be. In addition, although the eccentricity degree of both holes is equal in a present Example, you may differ.

  As shown in FIG. 4B, the inner peripheral portion of the top wall portion 21 has a plurality of ratchet mechanisms in cooperation with a plurality of main body side ratchet claws 11b formed on the main body top plate portion 11. An upper lid side ratchet claw 21b is provided. By this ratchet mechanism, the upper lid part 20 can only rotate in one direction, and after the plant is temporarily clamped to the overlapping opening part by rotating the upper lid part 20, the tightened state is preferably maintained. It is configured. The upper lid side ratchet claws 21b are arranged at unequal intervals (non-uniform intervals) as shown in FIG. 4 (c). In this embodiment, for example, eight counterclockwise are provided at unequal intervals of 42 °, 45 °, 48 °, 45 °, 48 °, 45 °, 42 °, and 45 °. In addition, the circumferential length of the upper lid side ratchet pawl 21b is preferably about 30 ° in terms of the central angle.

FIG. 5 is an explanatory view showing a tightening / holding state of the plant 50 by the plant holder 100 of the present invention. 5A shows a state before the plant 50 is tightened and held (when the first insertion hole 11a and the second insertion hole 21a are concentric), and FIG. The holding state (when the first insertion hole 11a and the second insertion hole 21a are eccentric to each other) is shown.
As shown in FIG. 5 (a), the diameter of the overlapping opening portion of the first insertion hole 11a and the second insertion hole 21a is a maximum of φD, which is considerably larger than the diameter φd of the plant 50. In this state, the plant 50 is not tightly fitted in each insertion hole, and therefore, when wind pressure or the like acts on the cutting 50, the plant 50 may fall down or come out of the insertion hole.
However, as shown in FIG. 5 (b), by rotating the upper lid 20 in the tightening direction and narrowing the overlapping opening, the plant 50 can be tightened and held in the overlapping opening of both holes. become. Thus, the diameter φd of the plant 50 held by the plant holder 100 of the present invention is 0 <φd <φD, and the plant holder 100 can tighten and hold plants 50 of various diameters. become.

FIG. 6 is a cross-sectional explanatory view showing the fixing ring 30 according to the present invention.
The fixing ring 30 is used for fixing the main body portion 10 to the weight portion 40. Therefore, the inner peripheral surface is provided with a circumferential protrusion 31 that fits into the main body lower groove portion 12c of the main body side wall portion 12.

FIG. 7 is an explanatory view showing a plant holder of the present invention.
The plant holder 100 is a combination of the main body 10, the upper lid 20, and the fixing ring 30 combined with a weight 40 used in an aerial greening method.
The weight portion 40 is made of iron and has a tapered shape (conical shape) so that it can penetrate deeply into the soil when dropped from an aircraft, and further promotes the growth of cuttings in the inside thereof. It has an internal space 40a in which soil can be stored.

FIG. 8 is a cross-sectional explanatory view showing the plant holder 100 in a state where the plant 50 is clamped and held.
The weight portion 40 is filled with soil 60 that promotes the growth of the plant 50. The plant 50 is embedded in the soil 60, and the plant 50 is passed through the first insertion hole 11a and the second insertion hole 21a. As shown in FIG. 5 (b), the first insertion hole 11a and the second insertion hole 21a are tightened and held in the overlapping opening portion.

  The main body 10, the upper lid 20 and the fixing ring 30 are preferably made from a biodegradable resin. Therefore, after the plant holder 100 is dropped from the aircraft and penetrates deeply into the soil, the main body 10, the upper lid 20 and the fixing ring 30 are decomposed by soil microorganisms to become water and carbon dioxide. Assimilate, the shape disappears. As described above, the plant holder 100 has a characteristic of not inhibiting the growth of the plant 50 because most of the plant holder 100 disappears soon after being dropped from the aircraft and entering deeply into the soil.

FIG. 9 is a developed view showing each arrangement of the upper lid portion side ratchet pawl 21b and the main body portion side ratchet pawl 11b according to the present invention, and the first insertion hole 11a and the main body portion of the upper lid portion 20 shown in FIG. The arrangement of the ratchet claws when the ten second insertion holes 21a are concentric is shown. Here, each central angle (°) corresponding to each ratchet claw interval and ratchet claw length is displayed as each ratchet claw length and ratchet claw interval.
First, 36 main body side ratchet claws 11b on the main body 10 side are provided at equal intervals of 10 ° (period) and circumferential length of 5 ° in this embodiment. For convenience of explanation, the numbers a1, a2,..., A36 will be given again to each ratchet claw 11b.

  On the other hand, the upper lid side ratchet pawl 21b that moves relative to a1, a2,..., A36 of the main body side ratchet pawl 11b is 42 °, 45 °, 48 °, 45 °, 48 °, 45 °, 42 Eight are provided at unequal intervals of 45 °. As will be described later, the upper lid side ratchet pawls 21b are not randomly spaced apart, but the distances to the main body side ratchet pawls 11b closest to the upper lid side ratchet pawls 21b are as follows. The main body side ratchet claws 11b are provided at unequal intervals so as to be appropriately dispersed in the range of 0 ° to 10 ° which is the ratchet claw interval of the ratchet claws 11b. Here, similarly to the main body side ratchet claw 11b, numbers b1, b2,..., B8 are newly assigned for the upper lid side ratchet claw 21b as well as the main body side ratchet claw 11b.

  By the way, the intervals of a1, a2,..., A36 of the stationary main body side ratchet pawl 11b are constant at 10 °. Accordingly, when the upper lid portion 20 is rotating (when the upper lid portion 20 is moving in the tightening direction), the geometric relationship (relative positional relationship) between the upper lid portion side ratchet pawl 21b and the main body portion side ratchet pawl 11b. Will be repeated periodically every 10 °. Accordingly, in the following description, the movement range of the upper lid portion 20 will be described by limiting it to 0 ° to 10 °.

  In particular, when the interval when the upper lid side ratchet pawls 21b are arranged at equal intervals is defined as "reference interval" and the deviation angle from the reference interval is defined as "deviation", b1, b2,..., b8 are set to b1, b2,..., b8 of the eight upper lid side ratchet claws 21b with a reference interval of 45 ° (= 360 ° ÷ 8) and a deviation of ± 3 °. In contrast, the deviations are assigned individually. In the present embodiment, -3 °, 0 °, + 3 °, 0 °, + 3 °, 0 °, -3 °, 0 with respect to b1, b2,..., B8 of the upper lid side ratchet pawl 21b. ° is assigned individually. As a result, the actual intervals (actual intervals) of the ratchet claws b1, b2,..., B8 are 42 °, 45 °, 48 °, 45 °, 48 °, 45 °, 42 °, as described above. It is an unequal interval of 45 °.

  Here, for each ratchet claw b1, b2,..., B8 of the upper lid side ratchet claw 21b, each ratchet claw a1, a5, a10, a15, a19, a24 of the main body side ratchet claw 11b closest to the return direction. , a28, a33, it is 2 °, 7 °, 5 °, 0 °, 8 °, 3 °, 5 °, 0 °. When these are rearranged in ascending order, they become 0 °, 2 °, 3 °, 5 °, 7 °, and 8 °, which is 0, which is the movement range of the upper lid portion 20 (or the ratchet claw interval of the main body side ratchet claw 11b). It can be seen that the particles are moderately dispersed in the range of 10 ° to 10 °. As will be described later, by dispersing in this way, the return amount of each ratchet pawl b1, b2,..., B8 of the upper lid ratchet pawl 21b does not exceed 2 ° at the maximum. That is, with respect to the deviation and the allocation thereof, if the distances to the main body side ratchet claws 11b closest to the upper lid side ratchet claws 21b are determined to be appropriately dispersed in the range of 0 ° to 10 °. The return amount (loosening amount) of the upper lid side ratchet pawl 21b can be reduced.

The graph of FIG. 11 shows the correlation with the distance (Y) to the main body side ratchet pawl 11b that is closest to each upper lid side ratchet pawl 21b with respect to the movement amount of the upper lid portion 20 in the tightening direction (X). Show.
Each solid line in the graph indicates a return distance to each main body side ratchet claw 11b closest to each upper lid side ratchet claw 21b. Each vertical dotted line in the graph indicates that the main body side ratchet claw 11b that is closest to each upper lid part side ratchet claw 21b is switched at each vertical dotted line. For example, looking at b1 of the upper lid side ratchet claw 21b, when the movement amount of the upper lid part 20 in the tightening direction is 0 ° to 8 °, a1 of the main body side ratchet claw 11b becomes the latest ratchet claw, and the upper lid It increases with a one-to-one proportional relationship (Y = X, that is, an inclination of 45 °) starting from 2 ° with respect to the movement amount of the portion 20. On the other hand, if the amount of movement of the upper lid 20 exceeds 8 °, a2 of the main body side ratchet pawl 11b becomes the latest ratchet pawl, the starting point is reset to 0 °, and then increases again in a one-to-one proportional relationship. Is shown.
Therefore, the actual return amount of the upper lid portion 20 is governed by the smallest value among the distances to the main body portion side ratchet claws 11b closest to the upper lid portion side ratchet claws 21b. This is because the upper lid portion side ratchet pawl 21b corresponding to the smallest value (minimum value) always comes into contact with (or hits) any one of the main body portion side ratchet claws 11b.

  That is, when the movement amount of the upper lid portion 20 is 0 ° to 2 °, the movement of the upper lid portion 20 is governed by the distance between b4 and b8 of the upper lid portion side ratchet pawl 21b and a15 and a33 of the main body portion side ratchet pawl 11b. When the amount is 2 ° to 3 °, it is controlled by the distance between b5 of the upper lid side ratchet claw 21b and a20 of the main body side ratchet claw 11b, and when the movement amount of the upper lid portion 20 is 3 ° to 5 °, When the amount of movement of the upper lid 20 is 5 ° to 7 °, the distance b3 of the upper lid ratchet claw 21b and the distance a6 of the main body side ratchet claw 11b, b3 and b7 of the upper lid side ratchet claw 21b When the amount of movement of the upper lid 20 is 7 ° to 8 °, the distance between a11 and a29 of the main body side ratchet claw 11b is 7 ° to 8 °, and b6 of the upper lid side ratchet claw 21b and a25 of the main body side ratchet claw 11b. If the amount of movement of the upper lid portion 20 is 8 ° to 10 ° controlled by the distance, the upper lid side ratchet It will be governed by the distance a2 of b1 and the main unit-side ratchet pawl 11b of the pawl 21b. Each bold line in the graph indicates the actual return amount with respect to the movement amount of the upper lid portion 20. From this graph, it can be seen that the actual return amount of the upper lid portion 20 does not exceed 2 °. Therefore, this graph shows an example of the arrangement of the upper lid side ratchet claws 21b “the actual return amount of the upper lid part 20 does not exceed 2 °”. Further, from this graph, in order to reduce the actual return amount of the upper lid part 20, the distance to the nearest main body part side ratchet claw 11b is made to increase in a low polygonal line at an inclination of 45 °, That is, it can be seen that each distance to the main body side ratchet pawl 11b closest to each upper lid side ratchet pawl 21b may be appropriately dispersed in a range of 0 ° to 10 °. In this embodiment, it is moderately dispersed on both sides around 5 °.

  When no deviation is provided in the reference interval of the upper lid side ratchet pawl 21b, that is, when the distances to the main body side ratchet pawls 11b closest to the upper lid side ratchet pawls 21b are not dispersed, The return amount of 20 corresponds to the cases b4 and b8 of the upper lid side ratchet pawl 21b in the upper graph, and is approximately 10 ° at the maximum. However, as in the present invention, the distance to the main body side ratchet claw 11b closest to each upper lid side ratchet claw 21b is appropriately dispersed on both sides centering on 5 °, thereby returning the return amount of the upper lid part 20 Can be as small as about 2 ° at the maximum.

For reference, FIG. 10 is a developed view showing each arrangement of the upper lid side ratchet pawl 21b and the main body side ratchet pawl 11b when the upper lid portion 20 moves in the tightening direction by 9 ° from the state of FIG.
In this case, for each ratchet claw b1, b2,..., B8 of the upper lid side ratchet claw 21b, each ratchet claw a2, a6, a11, a15, a20, a25 of the main body side ratchet claw 11b closest to the return direction. , a29 and a33 are 1 °, 6 °, 4 °, 9 °, 7 °, 2 °, 4 °, and 9 °. Therefore, the return amount of the upper lid 20 in this case is the upper lid. It can be seen that the distance between b1 of the portion side ratchet pawl 21b and a2 of the main portion side ratchet pawl 11b is 1 °. This can also be read from the intersection of X = 9 ° and the bold line in the graph of FIG.

  Thus, when the main body side ratchet pawls 11b are provided at equal intervals θ ° (for example, 10 °), the arrangement of the upper lid side ratchet pawls 21b is the closest to the main body side ratchet pawls in the return direction. The deviation (for example, ± 3 °) is determined so that each distance reaching 11b is appropriately dispersed in a range of 0 ° to θ ° (for example, 0 ° to 10 °), and the upper lid side ratchet claw 21b The reference interval (for example, 45 °) may be assigned.

  Even when the relationship between the upper lid side ratchet claw 21b and the main body side ratchet claw 11b is reversed, the relative relationship between the upper lid side ratchet claw 21b and the main body side ratchet claw 11b remains unchanged. Therefore, the ratchet claws a1, a2,..., A36 of the main body side ratchet claw 11b are provided on the inner top plate of the upper lid part 20, while the ratchet claws b1, b1, b2, of the upper lid part side ratchet claw 21b are provided. ..., even when b8 is provided on the outer top plate of the main body 10, the above-mentioned matters apply. In addition, the above-described matters are similarly applied when the numbers of the upper lid side ratchet claws 21b and the main body side ratchet claws 11b are the same.

  Thus, the ratchet claws with a small number (in this embodiment, the upper lid side ratchet claws 21b) are arranged at regular intervals (reference intervals), and the ratchet claws with the most recent numbers (in the present embodiment, the main body side) are arranged. The distance to the ratchet claw 11b) is moderately dispersed within a large number of ratchet claw intervals (10 ° in this embodiment) (0 in each case about 5 ° which is an intermediate value of 10 ° in this embodiment). (2 °, 3 °, 5 °, 7 °, 8 °), and the deviation (± 3 ° in this embodiment) is determined and assigned to each reference interval to rotate the upper lid 20. When the plant to be held is once tightened, the return amount (slack amount) of the upper lid portion 20 (upper ratchet claw) can be reduced. The total sum of the deviations must be set to zero.

  From another perspective, the upper lid return amount can be reduced by arranging evenly spaced so that the side with the larger number of ratchet claws does not become a multiple of the side with the smaller number of ratchet claws, or by making the distance uneven even with the same number of ratchet claws. Can be small.

  The plant holder 100 of the present invention can be suitably applied to a business field in which mountainous areas such as landslides are replanted.

DESCRIPTION OF SYMBOLS 10 Main body part 11 Top plate part 11a 1st insertion hole 11b Main body part side ratchet claw 12a Main body upper groove part 12b Slit 12c Main body lower groove part 12d Reinforcement rib 20 Upper lid part 21 Top wall part 21a 2nd insertion hole 21b Upper lid part side ratchet claw 22 Upper cover cylinder wall part 22a Upper cover protrusion part 30 Fixing ring 31 Circumferential protrusion part 40 Weight part 40a Internal space 50 Plant 60 Soil 100 Plant holder

Claims (5)

A weight part having an internal space for accommodating soil and fertilizer necessary for plant growth, a main body part attached to the upper part of the weight part, and an upper lid part rotatably attached to the upper part of the main body part A plant holding tool comprising:
The main body portion is composed of a top plate portion and a cylindrical side wall portion depending from the periphery of the top plate portion, and the lower end side thereof is opened,
The upper lid part is composed of a top wall part and a cylindrical wall part depending from the periphery of the top wall part,
The top plate portion of the main body portion and the top wall portion of the upper lid portion have a first insertion hole and a second insertion hole for holding plants that are eccentric with respect to the centers of the main body portion and the upper lid portion, respectively. A plant holder characterized by being provided in a state.   A plurality of main body side ratchet claws are formed on the outer peripheral portion of the upper surface of the top plate portion of the main body portion, while the outer peripheral portion of the lower surface of the top wall portion of the upper lid is engaged with the main body side ratchet claws. The plant holder according to claim 1, wherein a plurality of upper lid portion side ratchet claws are formed, and the upper lid portion side ratchet claws and the main body portion side ratchet claws constitute a ratchet mechanism.   3. The one of the plurality of main body side ratchet pawls or the plurality of upper lid side ratchet pawls is arranged at equal intervals in the circumferential direction, and the other is arranged at unequal intervals. Plant holder.   Saw teeth are formed on at least one inner wall surface of the inner wall surface of the top plate portion of the main body portion that defines the first insertion hole or the inner wall surface of the top wall portion of the upper lid portion that defines the second insertion hole. The plant holder according to any one of claims 1 to 3.   The plant holder according to any one of claims 1 to 4, wherein the weight portion is made of iron or an alloy thereof, and a bottom portion of the weight portion has a tapered shape.

Images