JP2007222104A - Method for supporting and planting tree, and tool for fixing root ball usable therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for supporting and planting tree by which hitting-in operation of a member to be hit in by a hammer or the like is not blocked by the presence of an adjuster, and the hitting-in operation can be carried out easily; and to provide a tool for fixing a root ball usable for the method. <P>SOLUTION: The adjuster is constituted so as to be tilted in the direction crossed to the moving direction of a moving member based on a fixing member in the method for supporting and planting the tree by putting the root ball on a carrying body for the root ball constituted of a fixing member becoming the carrying part of the root ball, and the moving member constituted so as to be movable to the fixing member, and supporting and planting the tree by fixing the root ball by bringing a supporter for the side face of the root ball connected to the fixing member through the adjuster into contact with the side face of the root ball while adjusting the position by the adjuster movably attached to the fixing member so as to be adjusted to the size of the root ball. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention is a tree support construction method and a root pot fixing tool used for the support construction method, more specifically, a tree support construction method for embedding a tree root pot in soil and supporting the tree. The present invention relates to a root pot fixing tool used in such a tree support construction method.

  Conventionally, as a method for supporting and constructing this kind of tree, for example, there is an invention described in Patent Document 1 below. That is, in this support construction method, a root pot is placed on a root pot mounting body that is freely expandable and contractable, and then a string material is laid around the root pot, and the end of the string material is attached to the root pot. It is a method of supporting and supporting the root part of a tree by attaching to a mounting body. Then, by using a root pot mounting body that can be expanded and contracted, the size of the root pot mounting body can be freely adjusted according to the size of the root pot.

By the way, when attaching the end portion of the string material to such a root pot mounting body, it is not particularly specified in Patent Document 1, but actually, depending on the size of the root pot called an adjuster. The root pot mounting body and the string member were connected via a tool capable of adjusting the attachment position. Furthermore, the mounting body for the root pot has a slide rod that can slide freely, and a driving member is attached to the tip side of the slide rod,
The root pot mounting body was fixed by driving the driving member into the side wall surface of the planting hole with a hammer or the like.

  However, since the adjuster as described above is bridged between the root pot mounting body and the string material, the adjuster is positioned on the root pot mounting body arranged in the direction in which the slide rod slides. For this reason, there is a problem in that the adjuster becomes an obstacle, and it is difficult to perform the driving operation of the driving member with the hammer as described above.

JP 7-87854 A

  The present invention was made to solve all of these problems, and while using the adjuster as described above, the presence of the adjuster causes trouble in the driving operation of the driving member with a hammer or the like. Therefore, it is an object of the present invention to provide a method for supporting and supporting a tree that can be easily driven and a root pot fixing tool used in the method for supporting and mounting the tree.

  In order to solve such a problem, the present invention was made as a support construction method for trees and a root pot fixing tool used in the support construction method. The invention mounts a root pot on a root pot mounting body 1 constituted by a fixing member 5 serving as a mounting portion of the root pot and a moving member 6 configured to be movable with respect to the fixing member 5. For the side face of the root pot connected to the fixing member 5 through the adjuster 3 while adjusting the position by the adjuster 3 movably attached to the fixing member 5 according to the size of the root pot. In the tree support construction method in which the support body 2 is brought into contact with the side surface of the root pot and the root pot is fixed to support the tree, the adjuster 3 moves the moving member 6 relative to the fixing member 5. It can be tilted in the direction that intersects the direction. Characterized in that it is

  The invention according to claim 2 is the method for supporting and supporting a tree according to claim 1, wherein the adjuster shaft portion 13 is formed in a cylindrical shape having a size such that the adjuster 3 can be fitted onto the fixing member 5, and It is characterized by comprising an adjuster frame 14 fixed to the adjuster shaft portion 13. Furthermore, the invention according to claim 3 is the method for supporting and constructing a tree according to claim 1 or 2, wherein the bent portion 12 is formed on the support 2 for the root pot side surface, and the support head through the bent portion 12. It is divided into a part 2a and a support body part 2b, and the support head part 2a is formed so as to be foldable with respect to the support body part 2b via the folding line part 12. To do.

  Furthermore, the invention according to claim 4 relating to a root pot fixing tool is a root composed of a fixing member 5 serving as a mounting portion of the root pot and a moving member 6 configured to be movable with respect to the fixing member 5. The pot mounting body 1, the root pot side support 2 for contacting the side face of the root pot and supporting the side face of the root pot, and the fixing member 5 according to the size of the root pot A root pot fixing tool comprising an adjuster 3 spanned between the root pot mounting body 1 and the root pot side surface support 2 so as to be movable with respect to the root pot, wherein the adjuster 3 is fixed. The member 5 is configured to be tiltable in a direction crossing the moving direction of the moving member 6.

  Further, the invention according to claim 5 is the root pot fixing tool according to claim 4, wherein the adjuster 3 is formed in a cylindrical shape having a size such that the adjuster 3 can be externally fitted to the fixing member 5, and It is characterized by comprising an adjuster frame 14 fixed to the adjuster shaft portion 13. Further, the invention described in claim 6 is the root pot fixing tool according to claim 4 or 5, wherein the bent portion 12 is formed on the root pot side support 2, and the support head is interposed via the bent portion 12. It is divided into a part 2a and a support body part 2b, and the support head part 2a is formed so as to be foldable with respect to the support body part 2b via the folding line part 12. To do.

As described above, the present invention provides a root pot mounting body composed of a fixing member that is a mounting portion of a root pot and a moving member configured to be movable with respect to the fixing member, and the root pot. A root pot side support for contacting the side face of the root pot to support the side face of the root pot, and mounting for the root pot so as to be movable relative to the fixing member according to the size of the root pot A fixing device for a root pot comprising an adjuster spanned between the body 1 and a support for the side surface of the root pot, wherein the adjuster can tilt with respect to the fixing member in a direction crossing the moving direction of the moving member. Therefore, the adjuster 3 is obstructed when an operation of placing the moving member with a hammer or the like is performed by tilting the adjuster in a direction crossing the moving direction of the moving member. There is no, and the installation work is done easily Door can be.
For this reason, when the driving member provided on the distal end side of the moving member is driven into, for example, the side wall surface of the planting hole, the driving operation can be easily performed.

  Further, since the adjuster can be tilted with respect to the fixed member in a direction crossing the moving direction of the moving member, the placement work can be easily performed even when the root pot is placed on the fixed member. it can.

  Furthermore, in the case where the adjuster is composed of an adjuster shaft portion formed in a cylindrical shape that can be fitted onto the fixing member, and an adjuster frame fixed to the adjuster shaft portion, the adjuster shaft The adjuster is tilted in the direction intersecting with the moving direction of the moving member as described above by fitting the portion to the fixing member and rotating the adjuster frame laterally with respect to the fixing member around the adjuster shaft portion. Such a structure can be realized with a very simple structure, and the adjuster can be tilted simply by rotating the adjuster frame around the adjuster shaft, so that the tilting work can be easily performed. it can.

  In addition, since the cylindrical adjuster shaft portion is externally fitted to the fixing member, there is an effect that the fixing member can be moved in a stable state. In addition, since the adjuster shaft portion is formed in a cylindrical shape, the installation area with the ground is small, and the resistance when the adjuster shaft portion is slid with respect to the fixed member is small, and the work when moving the adjuster is reduced. It becomes easy.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. First, the structure of the root pot fixing tool in the support construction of the tree as one embodiment will be described.
As shown in FIGS. 1 to 9, the root pot fixing tool of the present embodiment is in contact with the root pot mounting body 1 for mounting the root pot and the side face of the root pot. Four root pot side supports 2 for supporting the side face, four adjusters 3 spanned between the root pot mounting body 1 and the root pot side support 2, and the root pot It comprises a support belt 4 that is wound around the upper portion of the side support 2 and supports the root pot.

  As shown in FIG. 1 and FIG. 2, the root pot mounting body 1 includes a fixing member 5 that is a direct mounting portion of the root pot, and a moving member configured to be movable with respect to the fixing member 5. 6. As shown in FIGS. 1 to 3, the fixing member 5 is formed by intersecting two frame rods 7 and 7 formed in an elongated rectangular tube shape having a quadrangular cross section in a plane substantially cross shape.

  The moving member 6 includes a slide rod 8 that is slidably inserted into the frame rod 7 of the fixed member 5, and a driving member 9 that is attached to the distal end side of the slide rod 8. As shown in FIGS. 1 and 2, the driving member 9 includes two right angle portions 9a and 9a, two obtuse angle portions 9b and 9b, and one acute angle portion 9c. The distal end side is configured to be driven into the side wall surface of the planting hole in which the root pot is accommodated by the acute angle portion 9c on the distal end side.

  In addition, the driving member 9 is formed in a plate shape, and when it is placed on the bottom surface of the planting hole, it also has a function of causing resistance to the soil on the bottom surface of the planting hole. It is. Further, at a portion where the slide rod 8 and the driving member 9 are continuously provided, as shown in FIG. 4, a driving body 18 for driving with a hammer is projected upward.

As shown in FIG. 5, the root pot side surface support 2 is formed in a substantially T shape by fixing a pair of support side pieces 2 d and 2 d to the left and right sides of the upper part of the support center piece 2 c by welding. ing. Then, a folding line portion 12 is formed immediately below the portion of the support center piece 2c where the support side pieces 2d and 2d are fixed, the upper side of the folding line portion 12 is the support head 2a, and the lower side is the support body cylinder. It is formed as a part 2b. The support body 2b has a relatively narrow width, and the support head 2a is formed wider than the support body 2b.

  As shown in FIG. 6, the bent portion 12 is configured by inserting a shaft 12 b into a curved portion 12 a formed by bending a part of the steel material constituting the support center piece 2 c, thereby The support head 2a is formed so as to be bendable with respect to the support body 2b. The support center piece 2c and the support side piece 2d constituting the root pot side surface support 2 are both plate-like members, but the support center piece 2c has a plurality of (five in the present embodiment) rectangular shapes. .. Are formed in the same size, and the uppermost hole 10a is formed larger than the other holes 10b. The bent portion 12 is formed at a substantially central position of the uppermost hole 10a.

  As described above, the root pot side surface support 2 is formed to be bendable via the folding line portion 12, and can be brought into contact with the shape of the side surface of the root pot. In the root pot side support 2, the folding body 12 is positioned in the vicinity of the shoulder of the root pot, and the support body 2b is in the root pot so that the support head 2a contacts the upper part of the root pot. Used in contact.

  The adjuster 3 adjusts the position of the root pot side surface support 2 with respect to the root pot mounting body 1 to bring the root pot side surface support 2 into contact with the root pot according to the size of the root pot. It is to be able to do. As shown in FIGS. 7 and 8, the adjuster 3 includes an adjuster shaft portion 13 formed in a cylindrical shape having a size that can be fitted onto the frame rod 7 of the fixing member 5, and an adjuster shaft portion 13. It is comprised with the adjuster frame 14 to which it adhered.

  The adjuster frame 14 is formed by bending a thin steel material at a bottom portion 14 a, the bent bottom portion 14 a is fixed along the outer periphery of the shaft portion 13, and a pair of steel material portions are arranged in parallel from the shaft portion 13. It is configured as follows. A locking piece 15 formed by bending a plate-like member is formed on the upper part of the pair of steel parts of the adjuster frame 14. The bent locking piece 15 is composed of a long piece 15a and a short piece 15b having different widths, and a bolt 20 is inserted from the short piece 15b side to the long piece 15a side at the approximate center of the locking piece 15. It is fixed to.

  As shown in FIG. 9, the support belt 4 includes a flat belt body 16 made of synthetic fiber, natural fiber, synthetic resin, or the like, and stoppers 17 attached to both ends of the belt body 16. .

  Next, an embodiment of a tree support construction method for supporting a tree using the root pot fixing tool having the above-described configuration will be described. The root pot fixing tool as described above is used by being installed on the bottom wall surface of the planting hole. Then, the root pot fixing tool is assembled by the respective constituent members as described above.

  That is, when the slide rod 8 is inserted into the frame rod 7, the moving member 6 is integrated with the fixed member 5 to form the root pot placement body 1, and further, as shown in FIG. The adjuster 3 is connected to the root pot mounting body 1 by externally fitting 13 to the frame rod 7 of the fixing member 5. In this way, the four adjusters 3 are attached to the fixing member 5 as shown in FIGS. 11 and 12 and are erected on the fixing member 5.

  With the root pot fixing tool assembled in this manner installed on the bottom wall surface of the planting hole, the driving member 9 is driven into the side wall surface of the planting hole. This driving is performed by driving the driving body 18 with a hammer. In this case, in this embodiment, as shown in FIGS. 11 and 12, the adjuster 3 is erected on the frame rod 7 of the fixing member 5 of the root pot mounting body 1, and the placing body 18 is Since it is provided at the front end side of the slide rod 8 inserted into the frame rod 7, when performing the operation of placing the placing body 18 with a hammer, the root pot side surface support body 2 is erected. The presence of the adjuster 3 is hindered, and it is difficult to perform the hammering operation.

However, the adjuster 3 of the present embodiment is configured by fixing an adjuster frame 14 in which a pair of steel parts are arranged in parallel to a substantially cylindrical adjuster shaft portion 13, and the adjuster shaft Since the portion 13 is configured to be fitted on the frame rod 7 of the fixing member 5, as shown in FIG. 13, the adjuster frame 14 is placed sideways with respect to the frame rod 7 around the adjuster shaft portion 13. It can be rotated.
As a result, when performing the operation of placing the placing body 18 with a hammer, the adjuster 3 is not hindered and the placing operation of the placing body 18 can be easily performed. As a result, the driving member 9 can be easily driven into the side wall surface of the planting hole as shown in FIG.

  Next, after driving the driving member 9 into the side wall surface 22 of the planting hole 21 as described above, the adjuster frame 14 of the adjuster 3 is rotated in the reverse direction to stand on the frame rod 7 again. In the state, the root pot side surface support 2 is attached to the adjuster 3 as shown in FIG. More specifically, the root piece side surface support 2 is arranged so that the locking piece 15 attached to the upper part of the adjuster frame 14 straddles the two holes 10b, 10b in the support body 2b. The back side is locked. In the present embodiment, the locking piece 15 of the adjuster 3 is locked so as to straddle the second hole 10b and the third hole 10b from the top among the total of five holes. However, it can be arbitrarily changed whether the locking piece 15 of the adjuster 3 is locked so as to straddle the hole 10b, and depending on the position of the hole 10b for locking the locking piece 15, the side face of the root pot The height of the support body 2 will change. Therefore, the height of the root pot side support 2 can be adjusted according to the height of the root pot to be supported.

  Further, by inserting the bolt 20 into the locking piece 15, the locking piece 15 locked across the holes 10b and 10b is prohibited from being detached from the support body 2b. Thereby, as shown in FIG. 15, the root pot side surface support 2 is connected to the adjuster 3. Then, as shown in FIGS. 16 and 17, the four root pot side surface supports 2 are all attached to the adjuster frame 14 of the adjuster 3.

  Next, after attaching the root pot side surface support 2 to the adjuster 3 as described above, the root pot is placed on the root pot placement body 1. In this case, the root pot side support 2 is tilted in advance with the adjuster 3 as shown in FIG. That is, since the adjuster frame 14 can be rotated around the adjuster shaft portion 13 of the adjuster 3 as described above, the root pot side surface support 2 can be tilted together with the adjuster 3.

  In this way, by rotating the adjuster frame 14 of the adjuster 3 sideways with respect to the frame rod 7 and tilting it, the work of placing the root pot on the root pot mounting body 1 is not hindered. Become.

Next, the adjuster frame 14 is rotated in the opposite direction, and the adjuster 3 and the root pot side surface support 2 are raised again. In this case, the position of the adjuster 3 is set to be separated from the root pot 23 in advance as shown in FIG.
Then, as shown in FIG. 20, by moving the adjuster shaft portion 13 of the adjuster 3 along the frame rod 7 of the fixing member 5, the root pot side surface support 2 is brought into contact with the side surface of the root pot. In this case, the adjuster shaft portion 13 is formed in a substantially cylindrical shape and is fitted on the frame rod 7 so that it can be easily moved on the frame rod 7. Further, since the adjuster shaft portion 13 is formed in a substantially cylindrical shape, the installation area of the bottom of the planting hole 21 with the ground is small, and the resistance when the adjuster shaft portion 13 is slid with respect to the frame rod 7 is small. In this respect, the work for moving the adjuster shaft portion 13 is facilitated.
FIG. 21 shows the entire state in which all four root pot side surface supports 2 are in contact with the side surfaces of the root pot.

  Next, after the root pot side surface support 2 is brought into contact with the side surface of the root pot as described above, the support upper portion 2a is bent via the folding line portion 12a of the root pot side surface support 2. Accordingly, as shown in FIG. 22, the support upper part 2a of the root pot side surface support 2 abuts along the upper part of the root pot, and the support center part 2b is in contact with the root pot as shown in FIGS. Thus, the entire root pot side surface support 2 can be brought into contact with the root pot.

  Next, as shown in FIG. 22, the support belt 4 is wound around the support upper portions 2 a of the four root pot side surface supports 2. In this case, the support belt 4 is fastened by a winch (not shown). As a result, the upper surface side of the root pot is supported by the support belt 4, and the root pot side support 2 is pressed to the root pot side by the tightening force of the support belt 4, so that the root pot side support 2 is more reliable. It will be fixed to.

  Then, the soil is buried in the planting hole and the planting hole is closed. This completes the tree support construction.

  In the above-described embodiment, the fixing member 5 of the root pot mounting body 1 is formed by intersecting the two frame rods 7 and 7 in a plane substantially cross shape, but the shape of the fixing member 5 is For example, the four frame rods 7 may be formed in a substantially rectangular plane shape, and the three frame rods 7 may be formed in a substantially triangular plane shape. It doesn't matter. Further, the cross-sectional shape of the frame rod 7 is not limited to the quadrangular shape of the embodiment.

Furthermore, in the above embodiment, the moving member 6 is configured by the slide rod 8 that is slidably inserted into the frame rod 7 of the fixed member 5 and the driving member 9 that is attached to the distal end side of the slide rod 8. However, the configuration of the moving member 6 is not limited to this.
For example, in this embodiment, the driving member 9 is formed in a substantially pentagonal plane shape, and both the function of driving the side wall surface of the planting hole and the function of the resistance plate to the bottom surface are provided. For example, the resistance plate may have only a function as a resistance plate, and a moving member may be configured by providing an elongated driving member separately from the resistance plate.

  Furthermore, in the said embodiment, although the root support side surface support body 2 was comprised by adhering the separate support body side piece 2d to the support body center piece 2c by welding, it is not restricted to this but is integrally formed. It may be. Further, in the present embodiment, the entire root pot side surface support 2 is formed in a substantially T shape, but the shape of the root pot side surface support 2 is not limited to the embodiment, and is, for example, rectangular. It may be formed in a shape or the like.

Further, in the present embodiment, a plurality of square holes 10a, 10b,... Are drilled in the root pot side surface support 2, but it is not essential for the present invention to drill such holes. . For example, the root pot side support 2 may be formed in a simple plate shape without holes as described above. However, when a plurality of holes are formed, when the locking piece 15 of the adjuster 3 is locked, it is possible to select a hole to be locked over, thereby making the side face of the root pot as described above. There is an advantage that the support 2 can be attached to the adjuster 3 while adjusting the height.
Further, although the uppermost hole 10a is formed at the position of the folding line portion 12, an advantage that the operation of bending the support head portion 2a with respect to the support copper portion 2b can be easily performed. In addition, it is not an essential condition for the present invention to make the hole 10a at the position of the folding line portion 12.

  Furthermore, in the said embodiment, since it was comprised so that the support body head 2a could be bent with respect to the support body copper part 2b via the folding line part 12, the folding line part 12 was located in the shoulder part of a root pot. It was possible to make it contact in a state straddling from the side part of the root pot to the upper surface part, and a preferable effect that the root pot could be fixed more reliably was obtained. Forming the portion 12 is not an essential condition for the present invention.

  Furthermore, in the above-described embodiment, the adjuster 3 is formed in a cylindrical shape having a size such that the adjuster 3 can be fitted onto the frame rod 7 of the fixing member 5, and the adjuster frame 14 fixed to the adjuster shaft 13. Therefore, the structure that tilts the adjuster 3 in the direction crossing the moving direction of the moving member can be realized with a very simple structure, and the adjuster frame is rotated around the adjuster shaft. Since the adjuster can be tilted simply by doing so, a preferable effect that the tilting operation can be easily performed was obtained, but the configuration of the adjuster is not limited to the embodiment. The adjuster 3 is configured to be tiltable with respect to the fixed member 5 in a direction crossing the moving direction of the moving member 6. It is good.

  Further, in the above embodiment, the upper surface portion of the root pot is supported by wrapping one support belt 4 on the four root pot side surface supports 2, but the present invention is not limited to this. It is also possible to wind a support ring around the support ring 4 and to support the root ring side surface support 2 with the support ring wound around the part.

  Furthermore, in the above-described embodiment, a case where a so-called underground strut is constructed in which a root pot is buried in a planting hole and is blocked with soil to support a tree, but not limited thereto, for example, a tree support construction in a rooftop garden is provided. The present invention can also be applied to. In addition to general ground, the present invention can also be applied to support construction of trees on artificial ground.

The schematic plan view of the mounting body for root pots of the fixing tool for root pots as one Embodiment. The schematic plan view of the state which moved the moving member of the mounting body for root pots. The AA line enlarged end elevation of FIG. The principal part enlarged side view which shows the front end side of a moving member. The front view of the support body for root pot side surfaces. The same side view. Front view of the adjuster. The same side view. The side view of a support belt. The partial cross section front view of the state which attached the adjuster to the frame collar of the fixing member. The schematic plan view of the whole state. The schematic side view of the state of the whole. The partial cross section front view of the state which inclined the adjuster. The schematic plan view of the whole state. The partial cross section front view of the state which attached the adjuster to the support body for root pot side surfaces. The schematic plan view of the whole state. The schematic side view of the state of the whole. The partial cross section front view of the state which inclined the adjuster and the support body for root pot side surfaces. The principal part side view of the state which mounted the root pot on the fixing member. The principal part side view of the state which made the root basin side support body contact the root basin. The schematic side view which shows the state of the whole. The schematic plan view which shows the state which spanned the support belt over the support body for root basins side surfaces.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Root pot mounting body 2 ... Root pot side support 2a ... Support body head 2b ... Support body trunk | drum 3 ... Adjuster 12 ... Folding curve part 13 ... Adjuster shaft part 14 ... Adjuster frame

Claims (6)

  A root pot is placed on the root pot mounting body 1 constituted by a fixing member 5 serving as a mounting portion of the root pot and a moving member 6 configured to be movable with respect to the fixing member 5, The root support side support 2 connected to the fixing member 5 through the adjuster 3 while adjusting the position by the adjuster 3 movably attached to the fixing member 5 according to the size of the root pot. In a tree support construction method in which a tree is supported by fixing the root pot by bringing the root pot into contact with the side surface of the root pot, the adjuster 3 intersects the moving direction of the moving member 6 with respect to the fixing member 5. A method for supporting and supporting a tree, characterized in that it is configured to be tiltable in a direction to perform.   The adjuster (3) comprises an adjuster shaft portion (13) formed in a cylindrical shape that can be fitted onto the fixing member (5), and an adjuster frame (14) fixed to the adjuster shaft portion (13). Supporting construction method of trees. A bent portion 12 is formed on the root pot side support 2, and is formed by dividing the bent portion 12 into a support head 2a and a support body 2b. The tree support construction method according to claim 1 or 2, wherein the support head 2a is formed so as to be bendable with respect to the support trunk 2b.   A root pot mounting body 1 constituted by a fixing member 5 serving as a mounting portion of the root pot and a moving member 6 configured to be movable with respect to the fixing member 5, and a side surface of the root pot. The root pot side support 2 for supporting the side face of the root pot and the root pot mounting body 1 so as to be movable relative to the fixing member 5 according to the size of the root pot. A root pot fixing tool comprising an adjuster 3 spanned over a root pot side support 2, wherein the adjuster 3 is in a direction intersecting the moving direction of the moving member 6 with respect to the fixing member 5. A root pot fixing tool characterized by being tiltable.   The adjuster (3) is composed of an adjuster shaft portion (13) formed in a cylindrical shape that can be fitted onto the fixing member (5), and an adjuster frame (14) fixed to the adjuster shaft portion (13). Fixing tool for root pots. A bent portion 12 is formed on the root pot side support 2, and is formed by dividing the bent portion 12 into a support head 2a and a support body 2b. The root head fixing tool according to claim 4 or 5, wherein the support head portion 2a is formed to be bendable with respect to the support body trunk portion 2b.

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