JP2000083491A - Tree-protecting plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make the pattern of openings bored on the protecting plate compact so that a sufficient amount of water may be fed to the ground, even when the area of individual openings is made smaller. SOLUTION: A tree-protecting plate covers the whole or a partial circumferential area surrounding a tree standing up from the ground and comprises a monolithic or connected frame 7, the openings 10 formed in the frame 7 and the covering plates 2 that cover the openings and are individually fixed thereto. The frame body 7 is constituted with tubular materials 8, 9 all of which communicate one another where the tubular materials are bored holes 9a for injecting fluid to the ground and is equipped with a joint that is connectable to the liquid- feeding source from the outside.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tree protection plate for protecting the roots of, for example, street trees against various loads from the ground.

[0002]

2. Description of the Related Art The roots of street trees, garden trees, and the like are required to be protected from being hindered by a person stepping on or riding a vehicle. Tree protection boards have been used in the past.

[0003] An example of this tree protection plate is described in Japanese Utility Model Application Laid-Open No. 63-80958. For example, four cover-like protection plates, including those described in this publication, are installed on the ground around a tree, these protection plates are connected to each other, and the load on the root is cut off by covering the ground. That is the basic structure of a tree protection board.
Each of the protection plates is also required to have a structure in which a gap or an opening is provided to allow water and air to flow, so that root rot or the like does not occur.

[0004] In recent years, pavement materials having various designs have been used for pavement on sidewalks in urban areas, instead of simply arranging tiled pavement plates. For this reason, a tree protection plate provided around a tree installed on a sidewalk also tends to attach importance to the design of a pattern formed by, for example, openings and gaps for water and air circulation in order to achieve harmony with the surrounding road surface.

[0005]

A conventional tree protection plate is:
As described in the above-mentioned publication, four protective plates are laid on the ground around a tree, and are fastened with bolts and nuts. For this reason, by securely fastening the bolts and nuts, the four protection plates are constructed so as to be substantially on the same plane, thereby ensuring the safety of pedestrians. However, since the protective plate is plate-shaped, it is difficult to secure a sufficient scaffolding around the tree.

[0006] Once installed, the work of disassembling them and replacing them with another protection plate involves a considerable burden.
For this reason, the installed tree protection plate is likely to be used for a relatively long period of time, and there is no action to replace the tree protection plate to match a tree whose atmosphere changes depending on the season, for example.

[0007] Further, if the pattern of the opening or the like to be opened in the protective plate is made dense from the viewpoint of the emphasis on design, the area of each opening becomes small. For this reason, although there is not much hindrance to the air circulation, it has an effect on sufficiently sending water to the ground, and water easily accumulates on the surface of the protection plate,
Moreover, the scattered water accumulates on the sidewalk and does not match the scenery.

The problem to be solved in the present invention is to make a pattern of an opening or the like to be opened in a protective plate dense so that water can be sufficiently sent to the ground even if the area of each opening is small.

[0009]

The tree protection plate of the present invention comprises:
A tree protection plate that covers the entire circumference or a part of the ground around a tree that rises from the ground surface, and is integrally or connected to a frame laid on the ground, an opening formed in the frame, and fixed over the opening. The frame body is constituted by tubular members all communicating with each other, and holes are formed in these tubular members for discharging fluid toward the ground, and connected to an external fluid supply source. A possible joint is provided.

In this configuration, at least one of the frame and the cover plate is provided with a fixture that is elastically deformable and engages the frame body and the cover plate with each other, and the cover plate is attached via the fixture. It can be made detachable with respect to the frame body, or a plurality of the openings can be formed, and the whole pattern of a different aspect can be created by changing the arrangement posture of the cover plate over the openings. Can also.

[0011]

[Function] Since a hole is formed as a tubular member to discharge water, etc., toward the ground, water can be sent into the ground around trees by supplying water to the tubular member, and fertilizer mixed with fertilizer, etc. Liquid can also be supplied.

When the frame is placed around a tree, the frame has an opening, so that when the frame is placed on the ground, the opening can be used as a scaffold. .

[0013] Further, by using the elastically deformable fixing tool, fastening and separation work with bolts, nuts and the like are not required at all, and the cover plate can be easily replaced.

Furthermore, if a plurality of openings are formed, the cover plate covering the openings can be incorporated into the frame as a posture obtained by rotating the cover from the same posture array, and utilizing such a change in posture. By changing the direction of the surface pattern, it is possible to obtain various aspects of the overall pattern of the tree protection plate.

FIG. 1 shows a lower surface of a frame A made of a pipe. An outer shell is formed by a small-diameter pipe 8 in a square shape in a plan view, and a large-diameter pipe 9 disposed inside the square forms a square. Opening 10 is defined. The outer diameter of the small-diameter pipe 8 is half the outer diameter of the large-diameter pipe 9, and holes 8 a and 9 a for water supply or fertilization are provided on the bottom surfaces of these pipes 8 and 9 at an appropriate pitch. It is open.

The large-diameter pipe 9 has a cross-shaped joint 9b and a T-shaped joint 9c shown in FIGS. 2 (a) and 2 (b).
And are connected in a grid pattern to construct as shown.
The large-diameter pipe 9 and the small-diameter pipe 8 are connected by a T-shaped joint 8b shown in FIG. In addition, by using these joints 8b, 9b, 9c, FIG.
The pipes 8 and 9 can be laid so that the openings 10 are arranged in two rows inside and outside as shown in the bottom view of FIG.

FIG. 5 is a bottom view of the cover plate 11 that closes the opening 10 formed by the pipes 8 and 9.

The cover plate 11 needs an opening for ventilation, but is omitted here. The cover plate 11 closes the axis of the large-diameter pipe 9 when the opening 10 is closed. It has a square planar shape like this. And, on the bottom surface of the cover plate 11, four joining ribs 11a along the four sides are formed so as to protrude downward. The joining rib 11a has a groove 11b formed on the surface facing outward over the entire length in the width direction, and also has convex portions 11c protruding downward at both ends of the bottom surface.

As shown in FIG. 6, a fixture 12 for detachably fixing the cover plate 11 to the opening 10 formed by the pipes 8 and 9 is attached to the joining rib 11a. The fixing member 12 is made of synthetic resin, and has a fitting portion 12a having a substantially U-shaped cross section for sandwiching the joining rib 11a from the lower end thereof, and an engaging tongue piece bent substantially outward from the upper end thereof. 12b. And the fitting part 1
2a is formed with two protrusions 12c that fit into the groove 11b of the joining rib 11a, thereby ensuring that the joining rib 11a is restrained in the vertical direction. In addition, fixture 1
2 covers the lower end of the joining rib 11a and simultaneously
c, so that the cover plate 1
1 restricts movement in the direction of the side.

When the cover plate 11 is dropped into the opening 10, when the engaging tongue piece 12b having the sectional shape shown in FIG. 6A hits the peripheral surface of the pipe 9, the cover plate 11 is elastically deformed inward. When the lower surface of the edge portion of the pipe 9 is inserted until it comes into contact with the peripheral surface of the pipe 9, the engaging tongue piece 12b is deformed so as to go under the pipe 9 as shown in FIG. Thereby, the upward movement of the engaging tongue piece 12b is restricted by the pipe 9, and the cover plate 11 is stably fixed by the pipe 9.

FIG. 7 is a longitudinal sectional view of a main part showing the installation state of the two cover plates 11, and in the portion where these cover plates 11 are adjacent to each other, each edge is the center of the core of the large-diameter pipe 9. It covers the upper part. Further, the edge of the cover plate 11 facing the outer periphery is incorporated so as to cover the entire small-diameter pipe 8.

By providing the fixture 12 which is elastically deformed as described above, the pipes 8 installed on the ground around the tree are provided.
9 can be easily attached to and detached from the frame.
You can change 1 to various things and use it.

FIG. 8 is a plan view of the entire tree protection plate for showing the change in the pattern. FIG. 8A shows an example in which the cover plates 11 are arranged with the postures of adjacent ones changed from one another. This is an example in which an arc-shaped border pattern appears at a corner of a portion surrounding a tree. (B) of the figure is an example in which the cover plates 11 are arranged in the same vertical and horizontal positions in the figure, and is an example in which an arc-shaped border pattern is shown at the upper right.

As described above, even if only one type of the cover plate 11 is provided, the surface pattern of the cover plate 11 is formed so that a certain unified overall pattern can be expressed when the posture is changed. If so, the overall impression can be variously changed by the combination arrangement for the frame A.

In order to supply water from the pipes 8 and 9, a connecting portion for connecting external piping is provided. As this connecting portion, for example, as shown in FIG. 9, an elbow-shaped joint 13 raised at 90 ° to the innermost pipe 9 can be used. A water supply pipe 15 is connected to the joint 13.
Is connected, the water can be passed through the pipes 8 and 9 which are in communication with each other, and the water can be sent into the ground through the holes 8a and 9a opened respectively.

In addition to the water supply, it is of course possible to mix and feed a liquid containing fertilizer into the water supply.
It can be used not only to protect the roots of trees, but also to grow them.

In the example shown in FIG. 10, the joints 13 are provided at four places on the inner pipe 9, and a guard 14 raised around a tree can be inserted into these joints 13 to assemble them. The entrance can be closed. Therefore, in a normal case, if the guard 14 is connected, the protection of the tree itself and the inflow of earth and sand into the pipe 9 can be prevented.

When the water supply operation is performed, the guard 14 is used.
The water can be sent into the ground around the trees by removing the water supply and inserting the supply pipe 15 connected to the water distribution vehicle or the like into the joint 13 as shown in FIG. Reference numeral 7 shown in FIG. 10 is a frame member that is arranged inside the curb and supports the tree protection plate.

[0029]

According to the present invention, if the frame is constituted by a tubular member having a hole formed in the bottom surface, and a liquid containing water or fertilizer can be supplied to the ground using the tubular member, the surroundings of the tree can be reduced. Water can be reliably sent into the ground, and water does not accumulate on the cover plate and the sidewalk around it, so that it can match the landscape.

Further, when the frame body is installed around the tree, the opening can be used as a scaffold, thereby facilitating the construction.

Further, by making the cover plate detachable from the frame body by using an elastically deformable fixing tool, connection and disassembly work with bolts and nuts and the like are not required, so that the cover plate can be easily replaced or replaced on site. Or change the array. For this reason, it is possible to provide a tree protection plate that matches the season and the atmosphere of the tree by preparing a plurality of patterns having variations in the surface pattern and the like.

Furthermore, when the cover plate is fixed over a plurality of openings, the arrangement of the cover plate can be changed in various ways and the surface pattern of the cover plate is fixed as one specification. Even if it is, it is possible to make various patterns when viewed from the entire tree protection board,
The overall pattern adapted to the site can be obtained.

[Brief description of the drawings]

FIG. 1 is a bottom view of a frame body in which pipes are assembled in a lattice shape so that they can be used.

FIG. 2 is a plan view showing a joint for connecting a pipe.

FIG. 3 is a view showing a joint for connecting a small-diameter pipe and a large-diameter pipe.

FIG. 4 is a bottom view showing another example of a frame structure using pipes.

FIG. 5 is a bottom view of a cover plate mounted on a frame formed of a pipe.

6A and 6B are views showing joining to a pipe by a fixing tool, wherein FIG. 6A is a longitudinal sectional view of a main part showing an arrangement of the fixing tool with respect to a cover plate, and FIG. It is a figure showing the state where it was engaged.

FIG. 7 is a longitudinal sectional view of a main part when the cover plate is fixed.

FIG. 8 is a plan view showing two types of patterns when the arrangement of the cover plate is changed.

FIG. 9 is a perspective view of a main part showing a joint portion of the pipe.

FIG. 10 is a perspective view showing a state where a cover plate is arranged around a tree and a guard is connected to a joint of a pipe.

[Explanation of symbols]

 A Frame 7 Frame material 8 Pipe (tubular member) 9 Pipe (tubular member) 10 Opening 11 Cover plate 12 Fixture 13 Joint 14 Guard 15 Supply pipe (Fluid supply source)

Claims (3)

[Claims] 1. A tree protection plate for covering the entire circumference or a part of the ground around a tree rising from the ground surface, comprising an integrated or connected frame laid on the ground, an opening formed in the frame, A cover plate fixed over the opening, wherein the frame is constituted by tubular members all of which communicate with each other, and holes are formed in these tubular members for discharging a fluid toward the ground, and fluid is supplied from the outside. A tree protection plate provided with a joint connectable to a source. 2. At least one of the frame and the cover plate is provided with a fixture which is elastically deformable and engages the frame and the cover plate with each other, and the cover plate is attached to the frame via the fixture. The tree protection plate according to claim 1, wherein the tree protection plate is detachable from the tree. 3. The tree protection plate according to claim 1, wherein a plurality of the openings are formed, and a whole pattern of a different aspect can be created by changing an arrangement posture of a cover plate to cover the openings.