JP2005180937A - Light-weight boundary stake and lightweight stake - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To develop a resinous boundary stake or another resinous stake, with their weight reduced about by one half, without damaging the shapes, displaying function, or strength of the stakes, as to a resinous boundary stake or another resinous stake. <P>SOLUTION: As to the light-weight boundary stake or the lightweight stake, a light-weight boundary stake or a light-weight stake is provided wherein the head part of the boundary stake is given a prismatic or columnar appearance and a cavity therewithin. The upper end of a body, made by integrally laminating one or more longitudinal plate-like materials, is integrally and firmly fixed to the bottom surface of a top plate on the head part. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

    The present invention relates to a synthetic resin lightweight boundary pile and a lightweight pile, and more specifically, in a synthetic resin boundary pile that displays information on the top plate of the head, the head of the boundary pile has an external appearance. A prismatic or cylindrical shape with a hollow inside, and a body in which one or more vertically long plate-like bodies are integrally assembled, and the upper end of the body is integrally fixed to the bottom surface of the top plate of the head. A lightweight boundary pile characterized in that the lower end of the pile is configured to have an acute angle, and a synthetic resin pile capable of displaying information on the head, the head of the pile has a prismatic or columnar appearance The inside is hollow, and the body is formed by assembling one or more vertically long plate-like bodies integrally, the upper end of the body is integrally fixed to the bottom surface of the top plate of the head, and the lower end of the body is acute-angled Lightweight pile characterized by being constructed It relates.

  Conventionally, synthetic resin rod-like piles have been widely used to display land boundaries, tree names, point names, cultural property names, and facility names. In the past, wooden and concrete piles were often used, but wooden piles were vulnerable to corrosion, or concrete piles were heavy and difficult to transport to the construction site. Especially in mountainous areas, wooden piles are severely damaged due to humidity, insect damage, etc. Also, in places where there is no roadway, it is heavy labor to carry concrete piles manually. A rod-like stake is often used.

Patent Document 1 discloses an example of a synthetic resin rod-shaped pile that has been frequently used in the past under the name “indicator”, and its external appearance is as shown in FIG. 8a. In FIG. 8a, RA is an indicator, R1 is a main body, R2 is a head, R3 is an indication cap on which information is indicated, and R4 is a head cover. As shown in the cross-sectional view of FIG. 8b, the indicator RA is entirely made of synthetic resin, and no cavity is provided therein.
JP 2003-322525 A

Since the “indicator” of Patent Document 1 is entirely made of synthetic resin, it is more resistant to corrosion than wood and lighter than concrete. However, since the synthetic resin is filled to the inside, there is a certain amount of weight even though it is lightweight, and the boundary pile is about 45 cm in length with a standard length of about 350 to 400 g. As mentioned above, there are many places where cars cannot enter in mountainous areas, and when installed in such places, it must be transported by human power, so the appearance is almost the same, and the weight per car is further reduced There was a problem that I wanted to do. In this case, a condition that the strength should not be lowered is naturally attached.

  Furthermore, not only boundary piles but also various fields where piles are used, for example, pile-type name indicators that display the names of trees, flowers, etc., fixed point marking piles that indicate points and places, places and facilities, etc. In the case of a pile-type direction indicator that indicates the direction of the stake, there has been a demand for a lightweight and durable pile that is also shaped like a pile.

The present invention has been made to solve the above problems, and provides the following means for solving the problems.
<Solution 1>
In a synthetic resin boundary pile that displays information on the top plate of the head, the head of the boundary pile is a prismatic or columnar appearance with a hollow inside, and a body with one or more vertically long plates A lightweight boundary pile characterized by being assembled as a single body, wherein the upper end of the body is integrally fixed to the bottom surface of the top plate of the head, and the lower end of the body is formed in an acute angle shape.

<Solution 2>
In a synthetic resin pile that can display information on the head, the head of the pile is a prismatic or columnar appearance, the inside is a hollow, and the body is an integral assembly of one or more vertically long plates A lightweight pile characterized in that the upper end of the body is integrally fixed to the bottom surface of the top plate of the head, and the lower end of the body is formed in an acute angle shape.

  According to the invention of Solution 1 of the present invention, in the synthetic resin boundary pile displaying information on the top plate of the head, the head of the boundary pile is configured to have a prismatic or columnar appearance and a hollow inside As a result, the overall weight could be reduced to less than half of the conventional boundary pile. For example, the “marker” described in Patent Document 1 has a standard length of 45 cm as a boundary pile and is approximately 350 to 400 g, but the lightweight boundary pile of Example 1 of the present invention is Similarly, it is 45 cm long and has a weight of about 150 to 170 g, which is less than half. In simple terms, this means that a single person can carry about twice as many lightweight boundary piles, which is an epoch-making improvement in work efficiency.

  Thus, although the lightweight boundary pile according to the invention of Solution 1 is approximately half the weight of the conventional boundary pile, the appearance of the head exposed on the ground is the same as that of the conventional boundary pile. Since there is no change at all, even for information display, the visibility when viewed from a distance is not inferior to conventional boundary piles. Also, in terms of strength, the body is made up of one or more vertically long plates that are integrated into one body, so it is strong against both vertical and lateral pressure. Since it becomes thinner compared to the above, it is easy to drive into the ground, and once embedded, the one or more vertically long plate-like bodies grab the soil in the soil and thus have a great effect of being difficult to come off.

  Moreover, since the light weight pile by invention of the solution 2 can use various fields, the weight per piece cannot be specified, but the form where the head is the same shape and the length is equal and the inside is filled with resin. Compared to other stakes, it is no doubt that it is much lighter. In the light-weight pile according to the invention of Solution 2, since it is the head that is exposed to the ground, the appearance is no different from a pile filled with resin up to the inside. It can be used in exactly the same way as piles. Also, in terms of strength, the body is made up of one or more vertically long plates that are integrated into one body, so it is strong against both vertical and lateral pressure, and the body itself is compared to conventional piles. It is easy to drive into the ground because it is thin, and once buried, it has the same effect as the lightweight boundary pile, in that it has the great effect that the one or more vertically long plate-shaped bodies are difficult to pull out because they grab the soil in the soil. is there.

  The best mode for carrying out the invention will be described below in detail with reference to the drawings. The following Example 1 is an example of the best mode of the invention of the solving means 1, and Examples 2, 3 and 4 are the best mode of the invention of the solving means 2. This is an example.

<Configuration of Example 1>
1a to 4e show a lightweight boundary pile K1 according to the first embodiment of the present invention. As shown in FIG. 1a, the lightweight boundary pile K1 is composed of a body 2 composed of four plate-like bodies made of resin in the same manner as the substantially square-shaped head portion 1 made of synthetic resin (2 of the plate-like bodies). The sheet is not visible in FIG. 1a). The head 1 has an information display function, and the body 2 is buried in the ground and has a role of fixing and holding the head 1 at a fixed point. In addition, the synthetic resin which is a material of the head 1 and the body 2 does not contain any harmful substances and uses polypropylene or polyethylene having a low load on the environment. Of course, it is also conceivable to reuse waste plastic as a material.

  As shown in FIGS. 1b, 2a, 3a, 3b, and 4a, the head 1 includes a square top plate 11 and rectangular side plates 12a, 12b, 12c, and 12d that have inverted triangular shapes at the lower ends. It is configured as a unit. A circular recess 11e is formed in the center of the top plate 11, and a metal circular plate P displaying information J is fitted into the recess 11e (the plate P is fitted without the recess 11e. Of course, there are some types that do not.) The plate P is formed by inserting a nail N into a circular hole h1 (see FIG. 4a) drilled in the center and a circular hole h2 (see FIGS. 4a and 1b) drilled in the center of the top plate 11. The top plate 11 is fixed. In addition, grooves 11a, 11b, 11c, and 11d are radially engraved on the four circumferences of the circular hole 11e. As shown in FIG. 4a, a line L1, a groove 11b, and a groove 11d that connect the grooves 11a and 11c are formed. The intersection of the connecting lines L2 is configured to come to the center point of the nail N. Further, information J is displayed on the side plate 12b as shown in FIG. 1b.

  As shown in FIGS. 2 a, 2 b, 3 a, 3 b, and 4 b to 4 e, the body 2 has four vertically long plate-like bodies 21, 22, 23, and 24 that are integrated on one side in the longitudinal direction. As shown in FIGS. 4b to 4e, the cross section is substantially cross-shaped. (The body 2 may be composed of a single plate-like body.) The upper ends of the plate-like bodies 21, 22, 23, 24 are integrally fixed to the back surface of the top plate 11 of the head 1, The portion located inside the portion 1 has a width that is approximately one half of the length of one side of the top plate 11 of the head 1, and one side in the longitudinal direction of the plate-like body 21 is the head 1. On the back side of the side plate 12a, one side in the longitudinal direction of the plate-like body 22 is on the back side of the side plate 12b on the head 1, and one side in the longitudinal direction of the plate-like body 23 is on the back side of the side plate 12c on the head 1. One side in the longitudinal direction of the body 24 is fixed integrally to the back surface of the side plate 12d of the head 1 (see FIG. 4c), but in the portion below the lower end of the head 1, the plate 21 , 22, 23, 24 are smoothly reduced with diagonal lines 21 a, 22 a, 23 a, 24 a (see FIGS. 2 a, 2 b), and the top of the head 1 11 a 1 little of the width of about a quarter of the length of one side of the. As it goes further downward, the widths of the plate-like bodies 21, 22, 23, 24 are reduced with a slight taper. Shape.

  As a result of the configuration of the head 1 and the body 2 as described above, the upper end of the body 2 is inserted and fixed in the cavity inside the head 1. As seen in 4c, four hollow portions 13a, 13b, 13c, 13d are formed. In addition, since one side of the upper ends of the plate-like bodies 21, 22, 23, 24 is integrally fixed to the back surface of the side plates 12a, 12b, 12c, 12d of the head 1, the hollow portions 13a, 13b, 13c, Even if 13d is formed, the strength of the entire head 1 is as strong as or better than when the inside of the head 1 is filled with synthetic resin. The body 2 also has a structure that is strong against both vertical and lateral pressure because the plate-like bodies 21, 22, 23, and 24 are integrally formed in a substantially cross shape. As shown in FIG. 2 b, a circular hole h <b> 2 for inserting the nail N is formed in the center of the top plate 11 of the head 1 and the center of the upper end portion of the body 2.

<Operation of Example 1>
As described above, since the cavity portions 13a, 13b, 13c, and 13d are formed inside the head 1, the lightweight boundary pile K1 according to the first embodiment is light in weight and has the same shape and dimensions. Compared with a conventional boundary pile (marker) RA (see FIG. 8a) filled with synthetic resin, its weight is less than half. That is, while the conventional boundary pile RA is 45 cm in length and one side of the top plate is 4.5 cm as a standard one and is about 350 to 400 g, the lightweight boundary pile K1 of Example 1 is the same. The length is 45 cm, and one side of the top plate is 4.5 cm, and each piece is about 150 to 170 g. Therefore, especially when lightly bounded piles K1 are buried in mountainous areas where vehicles cannot enter, etc., one person can carry about twice the number of conventional bounded piles (markers) RA in the calculation. become. The lightweight boundary pile K1 is embedded in the ground in a state where an appropriate portion (portion displaying information) of the head 1 is exposed to the ground, like the conventional boundary pile (indicator) RA.

  Thus, although it is lightweight, when embedded in the ground, the shape of the head 1 is not different from the head R1 of the conventional boundary pile (indicator) RA, and thus the appearance In the same manner as the conventional boundary pile (indicator) RA, it functions as a pile. In addition, the information display function is not inferior to that of the conventional boundary pile RA. Furthermore, when the lightweight boundary pile K1 is buried in the ground, pressure from the vertical direction or the horizontal direction acts on the lightweight boundary pile K1, but as described in the above configuration, the lightweight boundary pile K1 is It has sufficient strength for both pressure and lateral pressure. Furthermore, the body 2 is slim compared to the conventional boundary pile (indicator) RA, and the width of the plate-like bodies 21, 22, 23, 24 is tapered so as to be slightly reduced toward the lower side. , It is extremely easy to drive.

  In addition, although the head 1 was comprised in the prismatic shape in the lightweight boundary pile K1 of Example 1, this can also be comprised in a column shape. The body 2 is composed of four plate-like bodies 21, 22, 23, 24, but the number of plate-like bodies is one, two, three, five, six or more. Of course it is also possible. In either case, of course, a hollow portion must be formed inside the head.

<Configuration of Example 2>
FIG. 5a and FIG. 5b show a lightweight pile K2 according to the second embodiment of the present invention, which is used as a cultural property marking pile. As shown in FIG. 5a, the lightweight pile K2 includes a substantially quadrangular columnar head 3 made of resin and having a hollow inside, and a body 4 including four plate-like bodies 41, 42, 43, and 44 that are also made of synthetic resin. It is configured. The head 3 has an information display function, and the body 4 is buried in the ground and has a role of fixing and holding the head 3 at a fixed point. The synthetic resin that is the material of the head 3 and the body 4 is made of polypropylene or polyethylene that does not contain harmful substances at all and has a low environmental impact as in the first embodiment. Of course, it is also conceivable to do.

  The configuration of the second embodiment is substantially the same as the configuration of the first embodiment, but no information is displayed on the top plate 31 of the head 3. One side of the upper end portion of the plate-like body 41 of the body 4 is integrally fixed to the back surface of the side surface 32 a of the head 3, and one side of the upper end portion of the plate-like body 42 is integrally fixed to the back surface of the side surface 32 b of the head 3. One side of the upper end portion of the plate-like body 43 is integrally fixed to the back surface of the side surface 32c of the head 3, and one side of the upper end portion of the plate-like body 44 is integrally fixed to the back surface of the side surface 32d of the head portion 3. Cavity portions 33a, 33b, 33c, and 33d are formed inside the portion 3. The body 4 is abruptly tapered from the bottom to the bottom of the head 3 and is slightly tapered toward the lower side. The lowermost end has an acute angle. Information J is displayed on the side surface 32 b of the head 3.

<Operation of Example 2>
As described above, since the hollow portions 33a, 33b, 33c, and 33d are formed in the head 1, the light weight pile K2 of the second embodiment is light in weight, and has the same shape and the same size. Compared to a pile (not shown) filled with resin, its weight is less than half, and it is convenient for transportation and burial work as well as the lightweight boundary pile K1 of the first embodiment. The light weight pile K2 is embedded in the ground in a state where an appropriate portion (a portion on which information is displayed) of the head 3 is exposed to the ground, like a conventional same-shaped pile (not shown).

  As described above, when it is buried in the ground despite being lightweight, the shape of the head 3 is not different from the head of a conventional same-shaped pile (not shown), and thus the appearance is the same. In the same manner, it functions as a pile just like the conventional same-shaped pile. In addition, the information display function is not inferior to the conventional same-shaped pile. Furthermore, when the light weight pile K2 is buried in the ground, pressure from the vertical direction or the horizontal direction acts on the light weight pile K2. However, as is clear from the above configuration, the light weight pile K2 is also resistant to the pressure in the vertical direction. It has sufficient strength for lateral pressure. Further, the body 4 is slim compared to the conventional same-shaped pile, and the width of the plate-like bodies 41, 42, 43, 44 is tapered so as to slightly decrease as it goes downward. In addition, the lightweight boundary pile K1 of Example 1 is also very easy to drive.

  In addition, although the head 3 is comprised in prismatic light-weight pile K2 of Example 2, this can also be comprised in a column shape. The body 4 is composed of four plate-like bodies 41, 42, 43, 44, but the number of plate-like bodies is one, two, three, five, six or more. Of course it is also possible. In either case, of course, a hollow portion must be formed inside the head.

<Configuration of Example 3>
6a and 6b show a lightweight pile K3 according to the third embodiment of the present invention, which is used as a tree name display pile. As shown in FIG. 6a, the lightweight pile K3 is made up of a cylindrical head portion 5 made of synthetic resin and having a hollow inside, and a body 6 composed of three plate-like bodies 61, 62, 63 made of synthetic resin. ing. The head 5 has an information display function, and the body 6 is buried in the ground and has a role of fixing and holding the head 5 at a fixed point. The synthetic resin that is the material of the head 5 and the body 6 is made of polypropylene or polyethylene that does not contain any harmful substances and has a low environmental impact as in the case of the first and second embodiments. Naturally, it is conceivable to reuse plastic.

  The configuration of the third embodiment is substantially the same as the configuration of the second embodiment except that the head 5 has a columnar shape and the body 6 includes three plate-like bodies 61, 62, and 63. One side of the upper end portion of the plate-like body 61 of the body 6 is integrally fixed to the back surface of the side surface 52 of the head 5, and one side of the upper end portion of the plate-like body 62 is integrally fixed to the back surface of the side surface 52 of the head 5. One side of the upper end portion of the plate-like body 63 is integrally fixed to the back surface of the side surface 52 of the head 5, and hollow portions 53 a, 53 b, 53 c are formed inside the head 5. The body 6 is sharply tapered from the bottom to the bottom of the head 5 and is slightly tapered toward the lower side. The lowermost end has an acute angle. Information J is displayed on the side surface 52 of the head 5.

<Operation of Example 3>
As described above, since the hollow portions 53a, 53b, and 53c are formed in the head 5 as described above, the light weight pile K3 of the third embodiment is light in weight, has the same shape and dimensions, and the inside is made of synthetic resin. Compared to a filled pile (not shown), its weight is less than half, and it is the same as the lightweight boundary pile K1 of Example 1 that it is convenient for transportation and burial work. The light weight pile K3 is buried in the ground in a state where an appropriate portion (a portion on which information is displayed) of the head 5 is exposed to the ground, like a conventional same-shaped pile (not shown).

  As described above, when it is buried in the ground despite being lightweight, the shape of the head 5 is not different from the head of a conventional same-shaped pile (not shown), and thus the appearance is the same. In the same manner, it functions as a pile just like the conventional same-shaped pile. In addition, the information display function is not inferior to the conventional same-shaped pile. Furthermore, when the light weight pile K3 is embedded in the ground, pressure from the vertical direction or the horizontal direction acts on the light weight pile K3. As is clear from the above configuration, the light weight pile K3 is also resistant to the pressure in the vertical direction. It has sufficient strength for lateral pressure. Furthermore, the body 6 is slim compared to the conventional same-shaped pile, and the width of the plate-like bodies 61, 62, 63 is tapered so as to be slightly reduced downward. The point which is very easy to drive is the same as that of the lightweight boundary pile K1 of the first embodiment.

  In addition, although the head 5 is comprised in the column shape in the lightweight pile K3 of Example 3, this can also be comprised in prismatic shape. The body 6 is composed of three plate-like bodies 61, 62, and 63. However, the number of plate-like bodies may be one, two, four, five, six, or more. Of course it is possible. In either case, of course, a hollow portion must be formed inside the head.

<Configuration of Example 4>
FIG. 7a and FIG. 7b show a lightweight pile K4 according to the fourth embodiment of the present invention, which is used as a part of a gardening fence. As shown in FIG. 7a, the lightweight pile K4 is made of a synthetic resin and has a substantially rectangular columnar head 7 with a hollow inside, and a body 8 comprising four plate-like bodies 81, 82, 83, 84, also made of synthetic resin. It is composed of The head 7 has no information display function, and the body 8 is buried in the ground and has a role of fixing and holding the head 7. Further, h3 and h4 are screw holes for screwing a horizontal plate (not shown). The synthetic resin that is the material of the head 7 and the body 8 is made of polypropylene or polyethylene that does not contain any harmful substances and has a low load on the environment as in the first embodiment. Of course, it is also conceivable to do.

  The configuration of the fourth embodiment is substantially the same as the configuration of the first embodiment, but information is displayed on the rectangular top plate 71 and the side plates 72a, 72b, 72c, 72d of the head 7 as shown in FIG. 7b. Absent. One side of the upper end portion of the plate-like body 81 of the body 8 is integrally fixed to the back surface of the side surface 72 a of the head 7, and one side of the upper end portion of the plate-like body 82 is integrally fixed to the back surface of the side surface 72 b of the head 7. One side of the upper end portion of the plate-like body 83 is integrally fixed to the back surface of the side surface 72c of the head portion 7, and one side of the upper end portion of the plate-like body 84 is integrally fixed to the back surface of the side surface 72d of the head portion 7. Cavity portions 73a, 73b, 73c, and 73d are formed inside the portion 7. The body 8 is sharply tapered from the lower part of the head 7 and slightly tapered toward the lower side, and the lowermost end has an acute angle.

<Operation of Example 4>
As described above, since the hollow portions 73a, 73b, 73c, and 73d are formed in the head 7 as described above, the light weight pile K4 of the fourth embodiment is light in weight and has the same shape and the same size. Compared to a pile (not shown) filled with resin, its weight is less than half, and it is convenient for transportation and burial work as well as the lightweight boundary pile K1 of the first embodiment. The light weight pile K4 is embedded in the ground in a state where an appropriate portion of the head 7 is exposed to the ground in the same manner as a conventional same-shaped pile (not shown), via the screw holes h3 and h4. A horizontal plate (not shown) is screwed.

  In this way, when it is buried in the ground despite being lightweight, the shape of the head 7 is not different from the head of a conventional same-shaped pile (not shown), and therefore, the appearance In the same manner, it functions as a pile just like the conventional same-shaped pile. Furthermore, when the light weight pile K4 is buried in the ground, pressure from the vertical direction or the horizontal direction acts on the light weight pile K4. It has sufficient strength for lateral pressure. Furthermore, the body 8 is slim compared to the conventional same-shaped pile, and the width of the plate-like bodies 81, 82, 83, 84 is tapered so as to be slightly reduced as it goes downward, so when driving Also, it is the same as the lightweight boundary pile K1 of the first embodiment in that it is very easy to drive.

  The present invention provides lightweight piles that are much lighter than conventional piles and have the same appearance and information display function as conventional synthetic resin piles in all fields where synthetic resin piles have been used. It can be done. The fields of use are not limited to all types of border piles, cultural property markings, horticultural piles, etc., but also as fixed point markings or point indication piles in the field of urban infrastructure development such as parks and green spaces. It can also be used as a stake for direction indication. Furthermore, in various facilities, it can be used as a pile for displaying points and as a pile for displaying directions.

(A) It is an external appearance perspective view of the lightweight boundary pile of Example 1 of this invention. (B) It is the external appearance perspective view which abbreviate | omitted a part of the lightweight boundary pile of Example 1 of this invention. (A) It is a front view of the lightweight boundary pile of Example 1 of this invention. (B) It is AA sectional drawing of FIG. 2a. (A) It is BB sectional drawing of FIG. 2a. (B) It is CC sectional drawing of FIG. 2a. (A) It is a top view of the lightweight boundary pile of Example 1 of this invention. (B) It is a bottom view of the lightweight boundary pile of Example 1 of this invention. (C) It is DD sectional drawing of FIG. 2a. (D) It is EE sectional drawing of FIG. 2a. (E) It is FF sectional drawing of FIG. 2a. (A) It is the external appearance perspective view which abbreviate | omitted a part of the lightweight pile of Example 2 of this invention. (B) It is the external appearance perspective view which abbreviate | omitted a part of the lightweight pile of Example 2 of this invention. (A) It is the external appearance perspective view which abbreviate | omitted a part of the lightweight pile of Example 3 of this invention. (B) It is the external appearance perspective view which abbreviate | omitted a part of the lightweight pile of Example 3 of this invention. (A) It is the external appearance perspective view which abbreviate | omitted a part of the lightweight pile of Example 4 of this invention. (B) It is the external appearance perspective view which abbreviate | omitted a part of the lightweight pile of Example 4 of this invention. (A) It is an external appearance perspective view of the indicator of patent document 1. FIG. (B) It is a longitudinal cross-sectional view of the head of the marking device described in Patent Document 1.

Explanation of symbols

1 Head 11 Top plate 11a Groove 11b Groove 11c Groove 11d Groove 11d Groove 11e Recess 12a Side plate 12b Side plate 12c Side plate 12d Side plate 13a Hollow portion 13b Hollow portion 13c Hollow portion 13d Hollow portion 2 Body 21 Plate 21b Diagonal 21b 22a diagonal line 22b lower end part 22c diagonal line 23 plate-like body 23a diagonal line 23b lower end part 23c diagonal line 24 plate-like body 24a diagonal line 24b lower end part 24c diagonal line 3 head 31 top plate 32a side plate 33b side plate 32c side plate 32c side plate 32c side plate 32c side plate 32c side plate 32c side plate 32c side plate 32c 33c hollow portion 33d hollow portion 4 body 41 plate-like body 42 plate-like body 43 plate-like body 44 plate-like body 5 head 51 top plate 52 side plate 53a hollow portion 53b hollow portion 53c hollow portion 6 body 61 plate-like body 62 plate-like body 63 Plate 7 Head 71 Top plate 72a Side plate 72b Side plate 72c Side plate 72d Side plate 73a Hollow part
73b Hollow part 73c Hollow part 73d Hollow part 8 Body 81 Plate body 82 Plate body 83 Plate body 84 Plate body J Information K1 Lightweight boundary pile K2 Lightweight pile K3 Lightweight pile K4 Lightweight pile L1 Line L2 Line N Nail P Plate R1 body R2 head R3 marking cap R4 head cover RA boundary pile h1 circular hole h2 circular hole h3 screw hole h4 screw hole

Claims (2)

  In a synthetic resin boundary pile that displays information on the top plate of the head, the head of the boundary pile is a prismatic or columnar appearance with a hollow inside, and the body has one or more vertically long plates. A lightweight boundary pile that is assembled as a unit, the upper end of the body is integrally fixed to the bottom surface of the top plate of the head, and the lower end of the body is formed in an acute angle shape. In a synthetic resin pile that can display information on the head, the head of the pile is a prismatic or columnar appearance, the inside is a hollow, and the body is an integral assembly of one or more vertically long plates A lightweight pile characterized in that the upper end of the body is integrally fixed to the bottom surface of the top plate of the head, and the lower end of the body is formed in an acute angle shape.

Images