JPH07103218A - Fixture for sheetlike object - Google Patents

Abstract

PURPOSE:To provide a sheetlike object fixture giving powerful holding force at the time of driving it into the ground. CONSTITUTION:A pointed part 3 is formed at one end of a bar body 2, and a sheetlike object hold-down part 5 is formed at the other end. A pin hole 10 is bored from the hold-down part 5 side of a body 2 toward the pointed part 3 side. A pin body 11 movable in the axial direction of the body 2 is inserted through the pin hole 10. The lower end parts of a pair of slip-off preventing blades 13 are pivotally supported on the body 2, and the slip-off preventing blades 13 are partially protruded into the pin hole 10. When the pin body 11 is moved toward the pointed part 3, the slip-off preventing blades 13 are pushed open.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixing tool which is driven into the ground for fixing a sheet-like material to the ground, and more particularly to a fixing tool which is suitable for fixing a weed-proof mat.

[0002]

2. Description of the Related Art An example of a sheet-like material fixed to the ground is a weed-proof mat. A weed-proof mat is a water-permeable mat that is laid to prevent weeds from growing on medians or shoulders of roads (especially highways). It is entwined in a felt-like shape with a high rate.

When laying this weed-proof mat on a median strip or the like, it is necessary to fix it on the ground so that the weed-proof mat does not fly up or roll up due to wind pressure caused by the running of large vehicles such as trucks and buses. . Therefore, conventionally, for example, as shown in FIG. 6, a wire 23 having sharp ends 21 is bent in a U-shape, and a disc-shaped mat pressing member 22 is inserted into the bent portion to lay it on the ground. It was fixed by driving from above the weed-proof mat.

[0004]

However, the fixture 23 shown in FIG. 6 has the following problems. That is, when the fixing tool 23 is driven into the ground, a hole is formed in the ground. However, unlike the case of wood, the hole does not elastically act in the tightening direction of the fixing tool 23 and is horizontal to the fixing tool 23. When a directional force is applied, the diameter of the hole expands, weakening the holding force and making it extremely easy to pull out the fixture 23.

Further, there is a drawback that if the fixing tool 23 gets out of the ground and rolls on the road, there is a high risk of causing a flat tire of the vehicle. Furthermore, since the metal fixture 23 decays much slower than the weed-proof mat, when laying a new weed-proof mat on the decayed weed-proof mat, the old fixture 23 must be pulled out from the ground. However, there is also a drawback that it requires labor for that.

In view of the above drawbacks, it is an object of the present invention to provide a sheet-like object fixing device which can obtain a strong holding force when driven into the ground. Further, it is an object of the present invention to provide a fixture for a sheet-like material that is less likely to cause a flat tire of a vehicle tire even if it gets out of the ground and rolls on the road, and that decays to some extent in the ground. I am trying.

[0007]

In order to achieve the above-mentioned object, a sheet-like object fixing device according to the present invention is provided with a pointed head at one end of a rod-shaped body and a pressing portion for the sheet-like object at the other end. ,
A pin hole is drilled from the pressing part side of the main body to the pointed head side, and a pin body that is movable in the axial direction of the main body is inserted into this pin hole, and a plurality of retaining blades are attached at its lower end part. The retaining blade is pivotally supported on the main body, and a part of the retaining blade is projected into the pin hole so that the retaining blade can be expanded by the pin body moving toward the pointed portion. Is.

Although the material for the sheet-like fixture is not particularly limited, it is desirable that at least the main body and the pin body are made of wood when used for fixing the weed-proof mat.

[0009]

According to the sheet-like object fixing device of the present invention, when the sheet-like object fixing device is driven from above the sheet-like object laid on the ground with the pointed head down, A hole is bored in the ground, most of the main body is buried in the ground, and the sheet is pressed against the ground by the pressing portion. When the pin body is driven into the pin hole from this state, the retaining blade is spread by the pin body in an inclined shape with the upper part widened.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A sheet-like object fixing device according to an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a front view of a fixture for a sheet-like object, FIG. 2 is a side view of FIG. 1, and FIG. 3 is A- of FIG.
A sectional view taken along the line A and FIG. 4 are plan views of the pressing member. In these drawings, a conical pointed head 3 is formed at one end of a main body 2 having a circular rod-shaped cross section, and a truncated cone-shaped expanded portion 4 is formed at the other end of a sheet-shaped fixture 1. . Further, as shown in FIG. 4, a countersink 6 having a tapered peripheral wall is bored in the center of the disc-shaped pressing ring 5a, and when the main body 2 is inserted, a retainer which will be described later is provided. A notch 7 is formed for letting the blade escape. Then, when the main body 2 is inserted into the countersunk hole 6 of the pressing ring 5a from the side of the pointed portion 3, the enlarged diameter portion 4 and the countersink 6 are engaged with each other to hold the pressing ring 5a.
Is locked to the other end side of the main body 2, whereby the pressing portion 5 of the sheet-like material is configured.

The main body 2 is provided with a pin hole 10 extending from the pressing portion 5 side to the pointed head 3 side, and the main body 2 is provided in the pin hole 10.
The pin body 11 that is movable in the axial direction is inserted. Further, blade insertion holes 12 reaching the pin holes 10 from both side surfaces of the body 2 are formed near the pointed portion 3 of the body 2. A pair of left and right retaining blades 13 inserted into the blade insertion hole 12 are pivotally supported on the main body 2 by blade pivot pins 14 at their lower ends. In this state, as shown in FIG.
It protrudes inward, and part of it protrudes out of the main body 2. At the lower end of the blade insertion hole 12, an inclined surface 1 for preventing the retaining blade 13 from swinging beyond a predetermined angle.
2a is formed. Further, an inclined surface 13 a facing the axial center of the main body 2 is formed at the upper end of the retaining blade 13.

The fixing tool 1 for the sheet-like object of this embodiment
Is made of wood except for the blade pivot pin 14. Further, in order to fix the weed-proof mat, the size of the main body 2 is, for example, about 25 mm in diameter and about 20 in length.
It is preferably 0 mm.

Next, the operation of the fixing device 1 for a sheet-like object constructed as described above will be described with reference to FIG. When the sheet-like fixture 1 with the pressing ring 5a fitted on the grass-proof mat C (an example of a sheet-like substance) laid on the ground B is driven with a sharp mallet or the like with its sharp head 3 facing down. , A hole is formed in the weed-proof mat C and the ground B by the pointed head 3, most of the main body 2 is buried in the ground, and the pressing portion 5
As a result, the weed-proof mat C is pressed against the ground B.

From this state, using a mallet and an elongated tool such as a chisel, the pin body 11 is driven until its tip comes into contact with the bottom wall of the pin hole 10. As it is rocked and pushed out in an inclined shape with its upper part widened, a strong holding force is obtained. Further, when the fixing tool 1 of the sheet-shaped object is about to be pulled out in the state where the retaining blade 13 is expanded in this way, an inclined surface 13a is formed at the upper end of the retaining blade 13, The retainer blade 13 is further swung, and the lower end portion of the outer side surface thereof has an inclined surface 12 of the blade insertion hole 12.
It spreads to the state of being in contact with a (shown by the chain double-dashed line in FIG. 5) and stops. As a result, when the sheet-shaped fixture 1 is pulled out, the holding force thereof is further strengthened, so that the sheet-shaped fixture 1 does not come off due to the wind pressure accompanying the traveling of the large vehicle. The weed-proof mat C can be prevented from flying or rolling up.

In this embodiment, the inclined surface 13 of the retaining blade 13 is also in a state before the pin body 11 is driven in.
Since a part including a is projected to the outside of the main body 2 (see FIG.
If the sheet body fixing tool 1 is about to be pulled out after the main body 2 is driven and the pin body 11 is forgotten, the retaining blades 13 are automatically expanded. As a result, it is possible to prevent the fixture 1 of the sheet-like object from coming off the ground.

Further, since the wood forming all the constituent elements except the blade pivot pin 14 is relatively soft, even if the fixture 1 of the sheet-like object slips off the ground and rolls on the road, Low risk of flat tires. In addition, since wood decays at almost the same speed as the weed-proof mat C, when the weed-proof mat C decays and a new mat is laid on it, it is necessary to pull out the fixture 1 of the old sheet-like object from the ground. And there is less effort to do so.
The main body 2 that occupies the main part of the fixture 1 for the sheet-like object
If the pin body 11 is made of wood, almost the same effect as if the whole body is made of wood can be obtained.

Of course, the sheet-like material fixed to the ground with the sheet-like material fixing device according to the present invention is not limited to the grass-proof mat, and when fixing the sheet-like material to be laid semipermanently, the sheet The entire fixture for the object may be made of a material such as plastic or metal. Further, the embodiment of the sheet-like object fixing tool according to the present invention is not limited to the above-mentioned embodiment, and for example, the number of retaining blades is three.
Alternatively, the main body may have a rod shape with a polygonal cross section. Further, the shape and provision of the pressing portion are arbitrary, and may be formed integrally with the main body. Furthermore, in the embodiment, the pin body is moved by being driven, but it is also conceivable that the pin hole and the pin body are screwed together to move the pin body in the axial direction by the action of the screw.

[0018]

As described above, when the fixture of the sheet-like object according to the present invention is driven into the ground with its pointed tip facing down, a hole is bored in the ground by the pointed portion, and the main body has a large size. The part is buried in the ground, and the pressing member presses the sheet-like object against the ground. When the pin body is driven into the pin hole from this state, the retaining blade is spread by the pin body in an inclined shape with the upper part widened. Therefore, a strong holding force is obtained, the fixture does not come off the ground, and the sheet-like material can be strongly fixed to the ground.

If the main body and the pin body are formed of wood, the risk of causing a flat tire of the vehicle tire is low even if the body and the pin body fall off the ground and roll on the road.
Moreover, since it decays to some extent in the ground, it is not necessary to pull out the old fixture, and the sheet-like fixture is particularly suitable for fixing the weed-proof mat.

[Brief description of drawings]

FIG. 1 is a front view of a sheet-like object fixture according to an embodiment of the present invention.

FIG. 2 is a side view of FIG.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is a plan view of a pressing ring.

5 is a cross-sectional view taken along the line AA of FIG. 2 in a fixed state of the sheet-shaped material.

FIG. 6 is a front view of a conventional fixture for a sheet-shaped material.

[Explanation of reference numerals] 1 sheet-like fixture 2 main body 3 pointed portion 5 pressing portion 10 pin hole 11 pin body 13 retaining blade

Claims (2)

[Claims] 1. A rod-shaped main body is provided with a pointed portion at one end and a sheet-like object holding portion at the other end, and a pin hole is formed from the holding portion side of the body toward the pointed portion side. A pin body that is movable in the axial direction of the main body is inserted into the hole, and a plurality of retaining blades are pivotally supported on the main body at their lower ends, and
A fixing tool for a sheet-like object, wherein a part of the retaining blade is projected into the pin hole so that the retaining blade is expanded by a pin body moving toward the pointed portion. 2. The fixture for a sheet-like object according to claim 1, wherein the main body and the pin body are made of wood.