JP7500138B2 - Fixture - Google Patents

Description

The present invention relates to a fastener for fixing a corrosion protection sheet that is wrapped around the outer surface of a water pipe or the like that is buried underground.

In the past, there was a problem in that the outer surface of water pipes (or gas pipes, etc.) buried underground could be corroded by bacteria and moisture present in the ground. For this reason, a measure has been taken to wrap the water pipe in a sheet to prevent erosion (hereinafter referred to as an "anti-corrosion sheet") before burying the water pipe underground (see Patent Document 1 below).

There are many different sizes of anti-corrosion sheets already in use to accommodate the various pipe diameters. Therefore, users wrapping anti-corrosion sheets around water pipes must first check the size of the water pipe to be covered, then select an appropriate anti-corrosion sheet of the appropriate size and wrap it around the pipe.

Then, in order to fit the anti-corrosion sheet to the surface of the water pipe, the user manually wraps the anti-corrosion sheet around the surface of the water pipe while preventing the sheet from sagging. After that, the user fixes the position of the anti-corrosion sheet using a string-like fixing band or the like.

JP 2015-87011 A

When using a fixing band like the one described above, the user must hold the fastener and the folded part of the rubber band in one hand and pull them together to fasten them, which places a burden on the user. Furthermore, because tension is generated in the rubber band while fastening it, there is a risk that the hand may get caught when fastening it, or that if the rubber band comes off the hand, the repulsive force may cause the fastener to move wildly, creating a danger.

In view of these issues, the present invention aims to provide a fastener that can improve convenience.

The fastener according to a first aspect of the present invention comprises:
A fixing device for fixing a sheet for protecting a tubular buried object buried underground to the buried object,
The fixture includes:
A string-like portion formed long in a certain direction;
One end of the string-like portion is fixed,
a fixing piece portion capable of fixing an opposite end side of the string-shaped portion when the string-shaped portion has gone around the buried object and the sheet at least once,
The fixed piece portion is
The cord-like portion has a first through hole capable of fixing the opposite end of the cord-like portion.

The fixture according to a second aspect of the present invention comprises:
A fixing device for fixing a sheet for protecting a tubular buried object buried underground to the buried object,
The fixture includes:
A string-like portion formed long in a certain direction;
Both ends of the string-like portion are fixed,
a fixing piece portion capable of fixing a central portion side of the string-shaped portion in a state where the string-shaped portion has wrapped around the buried object and the sheet at least once,
The fixed piece portion is
The cord-shaped portion is characterized by having a first through-hole portion capable of fixing a central portion of the cord-shaped portion.

More preferably,
The first through hole portion has a cover portion that guides the string-like portion, which is inserted into the fixing piece portion, in the circumferential direction of a tubular buried object.

More preferably,
The fixing piece has a first through groove portion that is continuous with the hole of the first through hole portion and extends to the outside of the fixing piece portion.

More preferably,
The string-like portion is stretchable, and the first through groove portion is formed to be narrower than the first through hole portion or the string-like portion in its natural state.

More preferably,
The string-like portion has elasticity, and the fixing piece portion has a second through hole portion capable of fixing an opposite end side or a central portion side of the string-like portion,
a second through groove portion that is continuous with the hole of the second through hole portion and extends to an outside of the fixing piece portion;
The second through groove portion is formed to have a narrower width than the second through hole portion or the string-shaped portion.

More preferably,
At least one of the through holes is formed with a barb for preventing the string-like portion inserted into the through hole from slipping out.

More preferably,
At least one of the through grooves is formed so that its width narrows toward the adjacent through hole.

The fastener according to the present invention can improve the workability when wrapping anticorrosion sheet around water pipes.

FIG. 11 is a schematic diagram showing a state in which a fixing device according to the first (2) embodiment of the present invention is attached. FIG. 2 is a schematic diagram illustrating the fixing device (in normal operation) according to the first embodiment of the present invention. FIG. 2 is a schematic diagram illustrating the fastener (when installed) according to the first embodiment of the present invention. FIG. 11 is a schematic diagram illustrating a fixing device (in a normal state) according to a second embodiment of the present invention. FIG. 11 is a schematic diagram illustrating a fastener (when attached) according to a second embodiment of the present invention. 1 is a schematic diagram illustrating a fixing device (modification) according to the first embodiment of the present invention. FIG. FIG. 11 is a schematic diagram illustrating a fixing device (modification) according to Example 2 of the present invention. FIG. 11 is a cross-sectional view of a third through hole portion in the first (2) embodiment of the present invention.

The following describes the fastener according to the present invention in the form of an embodiment, with reference to the drawings. Note that in the following embodiment, the anticorrosive sheet is wrapped around a water pipe, but the present invention is not limited to this, and is generally applicable to the case where a sheet for protecting a tubular object buried underground is fixed to the object.

[Example 1]
As shown in FIG. 1 , the fixing device 1 of this embodiment is wrapped around the surface of the corrosion protection sheet 4 that is wrapped around the surface of the water pipe 3, thereby fixing the corrosion protection sheet 4 to the water pipe 3, and mainly comprises a string-shaped portion 11 and a fixing piece portion 12.

The string-like portion 11 is a string-like member formed long in a certain direction, and is made of a stretchable material such as rubber. Hereinafter, the end of the string-like portion 11 in one direction will be referred to as the one-direction end 11a, and the end in the opposite direction will be referred to as the opposite-direction end 11b.

2 and 3, the fixing piece 12 is substantially flat, with one end 11a of the string-shaped portion 11 fixed (by a third through hole 12j and a fourth through hole 12k described below) and capable of fixing the opposite end 11b side when the string-shaped portion 11 goes around the water pipe 3 and the anticorrosive sheet 4 once or more. However, the string-shaped portion 11 with the one end 11a fixed extends outward from the rear surface 12h side of the fixing piece 12.
The shape of the fixed piece 12 will be described in detail below.

The fixed piece portion 12 has a first through hole portion 12a that penetrates the thickness of the fixed piece portion 12 at a position spaced apart in the longitudinal direction of the fixed piece portion 12 from the one-way end portion 11a fixed to the string-like portion 11, and can be fixed by inserting the opposite-way end portion 11b of the string-like portion 11 into it.

Furthermore, the fixed piece portion 12 has a first through groove portion 12b that is formed penetrating the thickness direction of the fixed piece portion 12 so as to be continuous (communicating) with the hole of the first through hole portion 12a and extends to the outside of the fixed piece portion 12 (communicating to one edge of the fixed piece portion 12 in the width direction).

The first through groove portion 12b is formed to be narrower than the first through hole portion 12a and the string-like portion 11 in its natural state (it may also be formed to be narrower than the first through hole portion 12a or the string-like portion 11 in its natural state).

Furthermore, the fixing piece portion 12 has a cover portion 12c that guides the opposite end portion 11b of the string-shaped portion 11 when inserted into the first through-hole portion 12a in the circumferential direction of the water pipe 3.

The cover portion 12c is a spherical shape formed on the edge of the first through hole portion 12a on the front surface 12i of the fixed piece portion 12 so as to cover the first through hole portion 12a, and is open on the side of the first through groove portion 12b and on the side opposite the one end portion 11a in the longitudinal direction of the fixed piece portion 12 (spaced away from the edge of the first through hole portion 12a).

The open portion is narrower than the diameter of the string-like portion 11 in its natural state and wider than the diameter of the string-like portion 11 in its tensioned state, so that the string-like portion 11 in its tensioned state can pass through the cover portion 12c from the first through-hole portion 12a and be inserted into the second through-hole portion 12d described below. However, this open portion does not necessarily have to be narrower than the diameter of the string-like portion 11 in its natural state.

The fixing piece portion 12 has a second through hole portion 12d that penetrates the fixing piece portion 12 in the thickness direction at a position spaced from the first through hole portion 12a on the opposite side of the both end portions 12a in the longitudinal direction of the fixing piece portion 12, and can be fixed by inserting the opposite end portion 11b of the string-shaped portion 11.

In addition, the fixed piece portion 12 has a second through groove portion 12e that is formed through the thickness of the fixed piece portion 12 so as to be continuous (communicating) with the hole of the second through hole portion 12d and extends to the outside of the fixed piece portion 12 (communicating to the other edge of the fixed piece portion 12 in the width direction).

The second through groove portion 12e is formed to be narrower than the second through hole portion 12d and the string-like portion 11 in its natural state (it may be formed to be narrower than the second through hole portion 12d or the string-like portion 11 in its natural state).

The fixing piece 12 has a first return portion 12f in the first through hole portion 12a and a second return portion 12g in the second through hole portion 12d. The return portions 12f and 12g are corners that function to prevent the string-like portion 11 inserted into the through holes 12a and 12d from slipping out. The first return portion 12f is formed at the boundary between the first through hole portion 12a and the first through groove portion 12b, and the second return portion 12g is formed at the boundary between the second through hole portion 12d and the second through groove portion 12e.

The fixing piece 12 is provided with a third through hole 12j and a fourth through hole 12k for fixing the one-way end 11a of the string-like portion 11. The third through hole 12j and the fourth through hole 12k are formed in line in the longitudinal direction of the fixing piece 12, and the fourth through hole 12k is provided closer to the first through hole 12a than the third through hole 12j. As shown in FIG. 8, the third through hole 12j has a third return portion 12l formed on its inner circumferential surface to prevent the string-like portion 11 inserted into the third through hole 12j from slipping out. This third return portion 12l may also be formed in the fourth through hole 12k.

The opposite end 11b of the string-shaped portion 11 is inserted into the fourth through hole portion 12k from the back surface 12h side, and then inserted into the third through hole portion 12j from the front surface 12i side and pulled, so that only the one-side end 11a side of the string-shaped portion 11 remains without being inserted into the third through hole portion 12j, and as a result, the one-side end 11a side is fixed to the fixing piece portion 12.

The above is a description of the configuration of the fixing device 1 according to this embodiment.
The following describes the procedure by which a user fastens the anticorrosive sheet 4 wrapped around the surface of a water pipe 3 using the fastener 1 according to this embodiment.

First, the anticorrosion sheet 4 is wrapped around the surface of the water pipe 3. Next, the fixing device 1 is attached. At this time, the string-shaped portion 11 is wrapped around the circumferential surface of the anticorrosion sheet 4 one or more times, with the front surface 12i of the fixing piece portion 12 facing radially outward (of the water pipe 3). The wrapping direction of the string-shaped portion 11 is the opposite direction to the first through hole portion 12a from the position where the opposite end portion 11a is fixed.

Furthermore, with the string-shaped portion 11 pulled, the opposite end 11b is fitted through the first through-hole portion 12a via the first through-groove portion 12b (the first through-groove portion 12b will not fit through the diameter of the string-shaped portion 11 in its natural state, but it can fit through the string-shaped portion 11 that has been pulled and reduced in diameter). This results in the opposite end 11b being inserted into the first through-hole portion 12a.

However, at this time, the opposite end 11b of the string-shaped portion 11 must be inserted into the first through-hole portion 12a from the back surface 12h of the fixed piece portion 12 toward the front surface 12i.

Then, while the string-like portion 11 is being pulled, the opposite end portion 11b inserted into the first through hole portion 12a is passed through the cover portion 12c and then through the second through groove portion 12e. The string-like portion 11 that has been passed through the cover portion 12c is folded back at an acute angle, which generates large friction and prevents loosening.

The string-like portion 11 is passed through the second through groove portion 12e, and then fitted into the second through hole portion 12d (the second through groove portion 12e cannot pass through the string-like portion 11 in its natural diameter, but can pass through the string-like portion 11 that has been pulled and reduced in diameter). This results in the opposite end portion 11b being inserted into the second through hole portion 12d.

At this time, the opposite end 11b is inserted into the second through hole portion 12d from the front surface 12i side toward the back surface 12h side.

The fixture 1 thus installed fixes the anticorrosive sheet 4 wrapped around the surface of the water pipe 3 in the state shown in FIG.
The above is an explanation of the procedure by which the user fastens the anticorrosive sheet 4 wrapped around the surface of the water pipe 3 using the fastener 1 according to this embodiment.

In this embodiment, since the first through hole portion 12a is provided, the opposite end portion 11b of the string-shaped portion 11 that is wrapped around the peripheral surface of the corrosion protection sheet 4 one or more times can be fixed to the first through hole portion 12a, thereby fixing the corrosion protection sheet 4 that is wrapped around the surface of the water pipe 3.

According to this embodiment, the cover portion 12c guides the opposite end 11b of the string-like portion 11 inserted into the fixing piece portion 12 in the circumferential direction of the water pipe 3. By pulling (squeezing) the string-like portion 11 through this cover portion 12c, the corrosion protection sheet 4 can be fixed more securely and the opposite end 11b of the string-like portion 11 can be easily guided to the second through hole portion 12d. Furthermore, once the string-like portion 11 is pulled along the cover portion 12c, the inner peripheral surface of the cover portion 12c and the string-like portion 11 come into sliding contact, so the fixation of the string-like portion 11 in the first through hole portion 12a is less likely to loosen.

In this embodiment, the first through groove portion 12b is described as being included, but the present invention is not limited to this. In other words, the string-like portion 11 can be inserted directly (in the thickness direction) into the first through hole portion 12a without providing the first through groove portion 12b. However, as described in this embodiment, the first through groove portion 12b makes it easier to insert the string-like portion 11 into the first through hole portion 12a by passing the string-like portion 11 through the first through groove portion 12b and then inserting it into the first through hole portion 12a (sliding it in from the side).

If the first through groove portion 12b is not provided, the opening portion of the cover portion 12c is only on the side opposite the one end portion 11a in the longitudinal direction of the fixed piece portion 12.

In addition, in this embodiment, the second through hole portion 12d and the second through groove portion 12e are described as being included, but the present invention is not limited to this, and the shape may be, for example, as shown in FIG. 6. In other words, the string-shaped portion 11 can fix the corrosion prevention sheet 4 wrapped around the surface of the water pipe 3 as long as it is inserted into the first through hole portion 12a.

Also, as shown in Fig. 6, the first through groove portion 12b may be formed so that its width narrows toward the adjacent first through hole portion 12a. In this way, when the string-like portion 11 is slid from the first through groove portion 12b to the first through hole 12a, if it is pulled in the opposite direction (as shown) to both end portions 12a in the longitudinal direction of the fixing piece portion 12, the string-like portion 11 will fit into the first through hole portion 12a without wobbling.

The same is true for the second through-hole groove 12e in FIG. 2. In other words, it is preferable that at least one of the through-hole grooves 12a, 12e is formed so that its width narrows toward the adjacent through-hole 12a, 12d.

[Example 2]
In this embodiment, some of the parts overlapping with the first embodiment will be omitted.
As shown in FIGS. 4 and 5, the fastener 2 according to this embodiment mainly comprises a string-like portion 13 and a fastening piece portion 14. As shown in FIG.

The string-like portion 13 is a string-like member formed long in a certain direction, and is made of a stretchable material such as rubber. Hereinafter, both ends of the string-like portion 13 will be referred to as both end portions 13a, and the central portion in the extension direction will be referred to as central portion 13b.

The fixing piece 14 is substantially flat, and both end portions 13a of the string-shaped portion 13 are fixed (by a third through hole 14j and a fourth through hole 14k described later), and can fix the central portion 13b side when the string-shaped portion 13 goes around the water pipe 3 and the anticorrosive sheet 4 once or more. However, the string-shaped portion 13 with both end portions 13a fixed extends outward from the back surface 14h side of the fixing piece 14.
The shape of the fixed piece 14 will be described in detail below.

The fixed piece portion 14 has a first through hole portion 14a formed at a position spaced apart in the longitudinal direction of the fixed piece portion 14 from both end portions 13a fixed to the string-like portion 13, penetrating the fixed piece portion 14 in the thickness direction, and into which the central portion 13b of the string-like portion 13 can be inserted for fixing (the string-like portion 13 is folded back at the central portion 13b, so that essentially two pieces are inserted).

Furthermore, the fixed piece portion 14 has a first through groove portion 14b that is formed penetrating the thickness direction of the fixed piece portion 14 so as to be continuous (communicating) with the hole of the first through hole portion 14a and extends to the outside of the fixed piece portion 14 (communicating to one edge of the fixed piece portion 14 in the width direction).

The first through groove portion 14b is formed to be narrower than the first through hole portion 14a and the string-like portion 13 in its natural state (it may also be formed to be narrower than the first through hole portion 14a or the string-like portion 13 in its natural state).

Furthermore, the fixing piece portion 14 has a cover portion 14c that guides the central portion 13b of the string-shaped portion 13 in the circumferential direction of the water pipe 3 when it is inserted into the first through-hole portion 14a.

The cover portion 14c is a spherical shape formed on the edge of the first through hole portion 14a on the front surface 14i of the fixed piece portion 14 so as to cover the first through hole portion 14a, and is open on the side of the first through groove portion 14b and on the side opposite both end portions 13a in the longitudinal direction of the fixed piece portion 14 (away from the edge of the first through hole portion 14a).

The open portion is narrower than the diameter of the string-like portion 13 in its natural state and wider than the diameter of the string-like portion 13 in its tensioned state, so that the string-like portion 13 in its tensioned state can pass through the cover portion 14c from the first through-hole portion 14a and be inserted into the second through-hole portion 14d described below. However, this open portion does not necessarily have to be narrower than the diameter of the string-like portion 13 in its natural state.

The fixing piece portion 14 has a second through hole portion 14d that penetrates the thickness of the fixing piece portion 14 at a position spaced from the first through hole portion 14a on the opposite side of both end portions 13a in the longitudinal direction of the fixing piece portion 14, and can be fixed by inserting the central portion 13b of the string-shaped portion 13.

In addition, the fixed piece portion 14 has a second through groove portion 14e that is formed through the thickness of the fixed piece portion 14 so as to be continuous (communicating) with the hole of the second through hole portion 14d and extends to the outside of the fixed piece portion 14 (communicating to the other edge of the fixed piece portion 12 in the width direction).

The second through groove portion 14e is formed to be narrower than the second through hole portion 14d and the string-like portion 13 in its natural state (it may be formed to be narrower than the second through hole portion 14d or the string-like portion 13 in its natural state).

The fixing piece portion 14 has a first return portion 14f in the first through hole portion 14a and a second return portion 14g in the second through hole portion 14d. The return portions 14f and 14g are corners that function to prevent the string-like portion 11 inserted into the through holes 14a and 14d from slipping out. The first return portion 14f is formed at the boundary between the first through hole portion 14a and the first through groove portion 14b, and the second return portion 14g is formed at the boundary between the second through hole portion 14d and the second through groove portion 14e.

In addition, the fixed piece portion 14 is provided with two third through holes 14j and two fourth through holes 14k for fixing the one-way end portion 13a of the string-like portion 13. The third through holes 12j and the fourth through hole portion 12k are formed side by side in the width direction of the fixed piece portion 14, and the third through hole portion 14j and the fourth through hole portion 14k are formed side by side in the longitudinal direction of the fixed piece portion 14, and the fourth through hole portion 14k is provided at a position closer to the first through hole portion 14a than the third through hole portion 14j. As shown in FIG. 8, the third through hole portion 14j has a third return portion 14l formed on its inner circumferential surface to prevent the string-like portion 13 inserted into the third through hole portion 14j from slipping out. This third return portion 14l may also be formed in the fourth through hole portion 14k.

The opposite end 13b of the string-shaped portion 13 is inserted into the fourth through hole portion 14k from the back surface 14h side, and then inserted into the third through hole portion 14j from the front surface 14i side and pulled, so that only the one-side end 13a side of the string-shaped portion 13 remains without being inserted into the third through hole portion 14j, and as a result, the one-side end 13a side is fixed to the fixing piece portion 14.

The above is a description of the configuration of the fixing device 2 according to this embodiment.
The following describes the procedure by which a user fastens the anticorrosive sheet 4 wrapped around the surface of a water pipe 3 using the fastener 2 according to this embodiment.

First, the anticorrosion sheet 4 is wrapped around the surface of the water pipe 3. Next, the fixing device 2 is attached. At this time, the string-like portion 13 (effectively two pieces) is wrapped around the periphery of the anticorrosion sheet 4 one or more times, with the front surface 14i of the fixing piece portion 14 facing radially outward (of the water pipe 3). The wrapping direction of the string-like portion 13 is the opposite direction to the first through hole portion 14a from the position where both end portions 13a are fixed.

Furthermore, with the string-like portion 13 pulled, the central portion 13b is fitted into the first through hole portion 14a through the first through groove portion 14b (the first through groove portion 14b will not fit through the diameter of the string-like portion 13 in its natural state, but if the string-like portion 13 has been pulled and reduced in diameter, it can be passed through by inserting two pieces in sequence), so that the central portion 13b is inserted into the first through hole portion 14a.

However, at this time, the central portion 13b of the string-shaped portion 13 must be inserted into the first through-hole portion 14a from the back surface 14h of the fixed piece portion 14 toward the front surface 14i.

Then, while the string-like portion 13 is pulled, the center portion 13b inserted into the first through hole portion 13a is passed through the cover portion 14c and then through the second through groove portion 14e. The string-like portion 13 that has been passed through the cover portion 14c is folded back at an acute angle, which generates large friction and prevents loosening.

The string-like portion 13 is passed through the second through groove portion 14e and then fitted into the second through hole portion 14d (the second through groove portion 14e is not able to pass through the string-like portion 13 with its natural diameter, but if the string-like portion 13 has been pulled and reduced in diameter, it can be passed through by inserting two pieces in sequence), so that the center portion 13b is inserted into the second through hole portion 14d.

At this time, the central portion 13b is inserted into the second through-hole portion 14d from the front surface 14i side toward the back surface 14h side.

The fixture 2 thus installed fixes the anticorrosive sheet 4 wrapped around the surface of the water pipe 3 in the state shown in FIG.
The above is an explanation of the procedure by which the user fastens the anticorrosive sheet 4 wrapped around the surface of the water pipe 3 using the fastener 2 according to this embodiment.

In this embodiment, since it has the first through hole portion 14a, the central portion 13b side of the string-like portion 13 wrapped around the peripheral surface of the corrosion protection sheet 4 one or more times can be fixed to the first through hole portion 14a, thereby fixing the corrosion protection sheet 4 wrapped around the surface of the water pipe 3.

According to this embodiment, the cover portion 14c guides the central portion 13b of the string-like portion 13 inserted into the fixing piece portion 14 in the circumferential direction of the water pipe 3, so that the anticorrosive sheet 4 can be fixed more securely by pulling (squeezing) the string-like portion 13 through this cover portion 14c, and the central portion 13b of the string-like portion 13 can be easily guided to the second through hole portion 14d. Furthermore, once the string-like portion 13 is pulled along the cover portion 14c, the inner peripheral surface of the cover portion 14c and the string-like portion 13 come into sliding contact, so the fixation of the string-like portion 13 in the first through hole portion 14a is less likely to loosen.

In this embodiment, the first through groove portion 14b is described as being included, but the present invention is not limited to this. In other words, the string-like portion 13 can be inserted directly (in the thickness direction) into the first through hole portion 14a without providing the first through groove portion 14b. However, as described in this embodiment, the first through groove portion 14b makes it easier to insert the string-like portion 13 into the first through hole portion 14a by passing the string-like portion 13 through the first through groove portion 14b and then inserting it into the first through hole portion 14a (sliding it in from the side).

If the first through groove portion 14b is not provided, the opening portion of the cover portion 14c will only be on the side opposite both end portions 13a in the longitudinal direction of the fixed piece portion 14.

In addition, in this embodiment, the second through hole portion 14d and the second through groove portion 14e are described as being included, but the present invention is not limited to this, and the shape may be, for example, as shown in FIG. 7. In other words, the string-shaped portion 13 can fix the corrosion prevention sheet 4 wrapped around the surface of the water pipe 3 as long as it is inserted into the first through hole portion 14a.

Also, as shown in Fig. 7, the first through groove portion 14b may be formed so that its width narrows toward the adjacent first through hole portion 14a. In this way, when the string-like portion 13 is slid from the first through groove portion 14b to the first through hole 14a, if it is pulled in the opposite direction (as shown) to both end portions 13a in the longitudinal direction of the fixing piece portion 14, the string-like portion 13 fits into the first through hole portion 14a without shaking.

The same is true for the second through-hole groove 14e in FIG. 4. In other words, it is preferable that at least one of the through-hole grooves 14a, 14e is formed so that its width narrows toward the adjacent through-hole 14a, 14d.

The present invention is suitable as a fastener for fixing anticorrosion sheets wrapped around the outer surface of water pipes and other objects buried underground.

1, 2 Fixing device 11, 13 String-like portion 11a One-direction end portion 11b Opposite-direction end portion 13a Both end portions 13b Central portion 12, 14 Fixing piece portion 12a, 14a First through hole portion 12b, 14b First through groove portion 12c, 14c Cover portion 12d, 14d Second through hole portion 12e, 14e Second through groove portion 12f, 14f First folded portion 12g, 14g Second folded portion 12h, 14h Back surface 12i, 14i Front surface 12j, 14j Third through hole portion 12k, 14k Fourth through hole portion 12l, 14l Third folded portion

Claims (7)

A fixing device for fixing a sheet for protecting a tubular buried object buried underground to the buried object,
The fixture includes:
A string-like portion formed long in a certain direction;
One end of the string-like portion is fixed,
a fixing piece portion capable of fixing an opposite end side of the string-shaped portion when the string-shaped portion has gone around the buried object and the sheet at least once,
The fixed piece portion is
A first through hole portion capable of fixing the opposite side of the string-like portion ,
The first through hole portion has a cover portion that guides the string-like portion inserted into the fixing piece portion in the circumferential direction of the tubular buried object.
A fixture characterized by: A fixing device for fixing a sheet for protecting a tubular buried object buried underground to the buried object,
The fixture includes:
A string-like portion formed long in a certain direction;
Both ends of the string-like portion are fixed,
a fixing piece portion capable of fixing a central portion side of the string-shaped portion in a state where the string-shaped portion has wrapped around the buried object and the sheet at least once,
The fixed piece portion is
A first through hole portion capable of fixing a central portion of the string-like portion ,
The first through hole portion has a cover portion that guides the string-like portion inserted into the fixing piece portion in the circumferential direction of the tubular buried object.
A fixture characterized by: The fixture according to claim 1 or 2, further comprising: a first through groove portion that is continuous with the hole of the first through hole portion and extends to an outside of the fixing piece portion. The fixing device according to claim 3 , wherein the string-like portion is stretchable, and the first through groove portion is formed to be narrower than the first through hole portion or the string-like portion in its natural state. The string-like portion has elasticity, and the fixing piece portion has a second through hole portion capable of fixing an opposite end side or a central portion side of the string-like portion,
a second through groove portion that is continuous with the hole of the second through hole portion and extends to an outside of the fixing piece portion;
The fixture according to claim 3 or 4 , wherein the second through groove portion is formed to have a narrower width than the second through hole portion or the string-shaped portion. The fastener according to any one of claims 1 to 5 , characterized in that at least one of the through holes is formed with a barb to prevent the string-like portion inserted into the through hole from slipping out. The fixture according to any one of claims 3 to 5 , wherein at least one of the through grooves is formed so that its width narrows toward an adjacent through hole.

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