JP5224214B2 - Lawn protective material with lower and upper frames engaged - Google Patents

Description

The present invention belongs to a lawn protection material engagement technique in which a plurality of frames are engaged and used.

There are golf courses, playgrounds, parks, gardens, factory roadsides, and various site spaces as open spaces where grass and other plants have been nurtured. there were. Recently, a lawn protective material as shown in FIG. 7a comprising a treading pressure part and a through-hole part to protect the plant from the treading pressure of a person entering the lawn or the car (JP-A-2-145137, JP-A-4-75541) Have been proposed and used.
Furthermore, in order to relieve human treading pressure when these lawn protective materials are used, a flat upper frame is installed on the lawn protective material to increase the area of contact between the human foot and the upper frame, Japanese Patent Laid-Open No. 5-56724 discloses a lawn protective material as shown in FIG.
Furthermore, Japanese Patent Application Laid-Open No. 2008-35856 proposes further reducing the stepping pressure by combining a three-layer frame.
The method of engaging the plant protection material composed of the lower frame and the upper frame is based on the lattice-shaped intersection shown in FIG. The lower frame is provided with a cap piece at the upper end of the erected rod, and is engaged by the cap piece opened on the edge piece when engaged. However, there is a need for a method of re-engaging with a person's stepping pressure once the engagement is disengaged.

JP-A-2-145137 JP 4-75541 JP 5-56724 JP2008-35856

The present invention is a proposal of an engagement means that re-engages with a stepping pressure when the engagement is released by a lawn protective material composed of an upper frame and a lower frame.

The present invention is a lawn protective material comprising a lower frame laid on a base and an upper frame engaged on the lower frame, and both the lower frame and the upper frame are meshed and are engaged with each other vertically. At the intersection of the lower frame is provided with a bar protruding upward, a cap piece is provided at the upper end, and the intersection of the upper frame is a ring, around the ring Is provided with a cylindrical portion that rises upward, an edge piece is provided from the middle of the cylindrical portion toward the center of the cylinder from the middle of the cylinder portion, the cap piece is inserted into the ring, and spreads on the edge piece, thereby lower frame and upper frame Is a lawn protective material engaged.
In order to re-engage with the stepping pressure when the engaging part of the upper and lower frames is disengaged, the cylinder part provided with the edge piece is further extended upward so that the edge piece is lowered downward by the stepping pressure on the upper part of the engaging part.

In the present invention, (1) when the edge piece provided on the upper frame forming the engaging portion of the upper frame and the lower frame and the cap piece provided on the lower frame are in the engaged state, Since the upper part of the cylinder part is stepped on, the edge piece provided at the intermediate part of the cylinder part is lowered downward, and the detached cap piece comes again above the edge piece to reproduce the engagement.

Hereinafter, the present invention will be described in detail with reference to the drawings.
FIG. 1 is a conceptual view showing a plane and a cross section showing an example of an upper frame constituting the lawn protective material. 1A is a plan view, and FIG. 1B is a cross-sectional view taken along the line AA ′.

The center of the lattice of the upper frame becomes a ring, and a cylindrical portion protruding upward is provided so as to surround the ring. An edge piece that protrudes from the wall surface toward the center of the cylinder part is provided at the inner surface intermediate part of the cylinder part.

FIG. 2 is a conceptual diagram showing a plane and a cross section showing an example of a lower frame constituting the lawn protective material. 2A is a plan view, and FIG. 2B is a cross-sectional view taken along the line AA ′.
The lower frame is provided with a bar protruding upward at the center of the lattice, and a cap piece is provided at the upper end thereof.
In FIG. 1 and FIG. 2, the upper frame and the lower frame are shown in a lattice shape, but may be a mesh shape, as long as the intersection of the upper frame and the lower frame and the mesh overlap.

FIG. 3 shows a state in which the upper frame and the lower frame are engaged. 3A shows the upper frame, FIG. 3B shows the lower frame, and FIG. 3C shows the state where the upper and lower frames are engaged.
When the bar and cap pieces provided on the lower frame engage with the upper frame, the cap pieces pass through the ring of the upper frame and the edge in the tube portion while the cap portion is shrunk, and the cap pieces are the upper part of the edge piece. Engage by spreading again.

FIG. 4 is a conceptual diagram showing a situation where the upper frame and the lower frame are recovered by the depression pressure when the engagement between the upper frame and the lower frame is released. FIG. 4a shows a state in which a part of the engagement is disengaged.
FIG. 4b shows a state in which the cylinder portion is bent by the stepping pressure, the edge portion of the cylinder portion moves outward, and the cap piece of the lower frame recovers the degree of freedom and moves above the edge piece. While repeating such a state, the cap piece moves above the edge piece and the engagement is reproduced.

Examples of use of this plant protection material are described below.
An example of use in a two-layer structure of the upper frame and the lower frame is shown in FIG.
In this usage example, the lattice portion functions as a foot pressure portion and the portion of the lattice that corresponds to the eyes functions as the water permeable portion, as in the case of a conventional plant protection material having a foot pressure portion and a water permeable portion. Therefore, plants such as turf extend from the water-permeable part, and the treading pressure applied to the shoots is supported directly by the treading pressure part, so it is not directly applied.

FIG. 6 shows an example of use when receiving a stronger pedal pressure. A conventional basic frame shown in FIG. 7a is used in which the top of the cone shape is the bottom pressure part at the lowermost layer part, the bottom part is engaged, and the place surrounded by the step pressure part is the water permeable part. In this case, an engaging tool that engages with each other under the lower frame and the top of the foot pressure portion of the base frame is used.
In any use example, it is the same that the treading pressure part receives the treading pressure of a person or a car, and the water permeable part fills the soil and grows plants such as turf and rainwater penetrates into the ground. .

As for the material of the lawn protective material, the base frame is manufactured from a concrete product or an injection moldable polyolefin. The lower and upper frames are made of injection-mouldable polyolefin to reduce human treading pressure. It is preferable that at least a part of the water permeable portions of the upper frame and the lower frame are arranged so as to communicate vertically with each other so that rainwater can penetrate into the ground. The material of the upper frame is preferably made of an elastomer containing rubber or the like because the cylindrical portion needs to be bent by a stepping pressure.

It is a conceptual diagram of the upper frame which comprises a lawn protective material. It is a conceptual diagram of the lower frame which comprises a lawn protective material. It is a conceptual diagram which shows the state which engaged the upper frame and the lower frame. It is a conceptual diagram which shows the state recovered | restored by stepping pressure, when the engagement of a lower frame and an upper frame disengages. It is a conceptual diagram which shows the usage example of this lawn protective material. It is a conceptual diagram which uses this lawn protective material in combination with a basic frame. It is a conceptual diagram which shows the example of the conventional plant protection material. It is a conceptual diagram which shows engagement with the conventional lower frame and upper frame.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Lawn protective material 2 Upper frame 3 Lower frame 4 Cylindrical part 5 Edge piece 6 Wheel 7 Rod 8 Shaft piece 9 Base frame 10 Conventional upper frame 11 Conventional lower frame

Claims (1)

A lawn protective material comprising a lower frame laid on a base and an upper frame engaged on the lower frame, wherein the lower frame and the upper frame are both mesh-shaped, and when meshed together, the mesh The crossing points of the lower frame coincide with each other, a bar protruding upward is provided at the crossing point of the lower frame, a cap piece is provided at the upper end thereof, the crossing point of the upper frame part is a ring, and rises upward around the ring A cylinder part is provided, an edge piece is provided from the middle of the cylinder part toward the cylinder center from the cylinder inner wall, the cap piece is inserted into the ring, and the lower frame and the upper frame are engaged by spreading over the edge piece. Lawn protective material.