JPH1121837A - Guard fence wooden cover and guard fence - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily form a guard fence which is easy to maintain, can reduce the impact received by a person or vehicle in a collision, and is harmonious with the circumferential environment such as scene at low cost by providing a wooden plate for covering one surface side of the beam of the guard fence. SOLUTION: This guard fence wooden cover 1 is formed of a wooden plate 2 for covering at least one surface side of the beam 11 of a guard fence 10. The wooden plate 2 is lengthily made with a width according to the width of the beam 11 of the guard fence 10 subjected to mounting, and it has a bolt through-hole 3 in a position corresponding to the bolt insert hole of the beam in the mounting on the beam 11. The beam 11 of the guard fence 10 has upper and lower vertical protruding parts, and the wooden plate 2 is brought into contact with the vertical protruding parts so as not to be protruded above and under the vertical protruding parts, whereby the wooden plate 2 can be mounted on the beam 11 in stable state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wooden fence suitable for use as a roadside fence, a separation fence fence, a sidewalk fence, a bridge fence, or a fence for parks and the like. About protective fence.

[0002]

2. Description of the Related Art Conventionally, for example, as a roadside protective fence,
A so-called guardrail as shown in FIG. 11 is frequently used. Guardrails of this type include a support 51 and a support 5
1 and a bracket 53 for connecting the column 51 and the beam 52, and is usually made of metal such as steel or cast iron.

[0003] In recent years, in order to mitigate the impact received by a passenger at the time of collision of a vehicle or the like, to protect the protective fence itself against the impact at the time of collision, and to harmonize with the surrounding environment such as landscape. Various protective fences using wood have been proposed. For example, Japanese Patent Application Laid-Open No. Hei 8-
No. 326023.

[0004]

However, road-side fences are already installed where required by law, and a huge number of these fences must be removed and replaced with new ones. Are extremely difficult and require enormous effort and money. Therefore, a first problem of the present invention is the advantage of using wood (the impact received by a person or a vehicle at the time of a collision can be reduced. The protective fence itself is protected from the impact to reduce the damage. ) Can be formed easily and inexpensively, maintenance is easy, and a wooden cover for a protective fence that can be used for an existing protective fence is provided.

[0005] Further, the protective fence using wood has some problems in the strength of the wood part, and is broken by an impact such as a collision, so that the wood is exposed in a sharp shape, and in some cases, fragments are scattered. Dangerous. Therefore, the second aspect of the present invention
It is an object of the present invention to provide a wooden fence for a fence and a fence that can strengthen the wood part and further reduce the danger in case the wood part is destroyed.

A third object of the present invention is to provide a protective fence which can be formed easily and inexpensively, is easy to maintain, and has the advantage of using wood.

Further, a fourth object of the present invention is to provide a protective device which can be formed easily and inexpensively, is easy to maintain, has the advantage of using wood, and can further reduce the danger when the wood portion is broken. Is to provide fences.

[0008]

According to a first aspect of the present invention, there is provided a wooden cover for a protective fence, comprising a wooden plate covering at least one surface of a beam of the protective fence. It is. The wooden plate-like body, the beam,
Along with the connection between the beam and the beam attached adjacently,
Alternatively, it is preferable that the beam can be attached to the protection fence together with the support of the support fence and the beam. It is preferable that the wooden plate has a bolt through hole at a position corresponding to a bolt insertion hole of the beam when the wooden plate is attached to the beam.

Another object of the present invention is to provide a wooden plate which covers at least one side of a beam of a protective fence, and the wooden plate is provided on a side surface of a column of the protective fence. It is a wooden cover for a protective fence, which is provided with a reinforcing material. The reinforcing material is preferably melamine impregnated paper.

In order to solve the second problem of the present invention, the present invention comprises a plurality of wooden pillars and a wooden beam attached between the wooden pillars, and the wooden beam is provided with a reinforcing material on a side surface of the pillar. It is a protective fence characterized by being stuck. It is preferable that the wooden support has a reinforcing material provided therein so as to extend in a direction substantially perpendicular to a direction in which the wooden beam is attached. The reinforcing material is preferably melamine impregnated paper.

Further, what solves the third problem of the present invention is a protective fence comprising a metal support and a metal beam attached to the metal support, wherein the protective fence comprises: A protection fence comprising a protection fence wooden cover that covers at least one side of the metal beam. The guard fence wooden cover, the metal beam,
It is preferable that the metal beam is attached to the protective fence together with the connection between the metal beam and the metal beam attached adjacent thereto or together with the fixing of the metal support and the metal beam of the protective fence. It is preferable that the protective fence wooden cover has a bolt through hole at a position corresponding to a bolt insertion hole of the beam when attached to the beam.

Further, what solves the fourth object of the present invention is a protective fence comprising a metal support and a metal beam attached to the metal support, wherein the protective fence comprises: The metal beam is provided with a protective fence wooden cover that covers at least one side of the metal beam, and the protective fence wooden cover is characterized in that a reinforcing material is attached to a side surface of the metal post of the protective fence. It is a protective fence. The reinforcing material is preferably melamine impregnated paper.

[0013]

The wooden cover for the fence of the present invention comprises a wooden plate that covers at least one side of the beam of the fence.
It can be easily and inexpensively attached to the beam of the fence, and the advantage of using wood can be provided for the existing fence. Further, even when the wood part is partially damaged, maintenance is extremely easy since only the damaged wooden plate-like body needs to be replaced. Further, since the reinforcing material is stuck to the wooden plate-like body, the danger in the case where the wooden part is broken is reduced.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION
A description will be given using one embodiment shown in FIGS. FIG. 1 is a front view of one embodiment of a wooden cover for a protective fence of the present invention, FIG. 2 is a sectional view taken along line AA of FIG.
FIG. 4 is a front view for explaining a method of attaching the protective fence wooden cover shown in FIG. 1, and FIG. 4 shows a state in which the protective fence wooden cover shown in FIG. FIG. 5 is a sectional view taken along line BB of FIG. 3, and FIG. 6 is a plan view of the vicinity of a column shown in the center of FIG.

As shown in FIGS. 1 to 3, a wooden cover 1 for a protective fence of this embodiment is made of a wooden plate-like body 2 covering at least one surface of a beam 11 of a protective fence 10.

The wooden plate-like body 2 is formed in a long shape and has a width corresponding to the width of the beam of the protective fence to be attached. Specifically, the wooden plate-shaped body of this embodiment is attached to the roadside protective fence 10 shown in FIG.
It is formed at 0 mm. As described above, since the wooden plate 2 covers the beam, the wooden plate 2 is formed to have substantially the same width as the width of the beam.

The length of the wooden plate 2 is 4000 mm, and the thickness thereof is 20 mm. However, the size of the wooden plate is not limited to the above size, but can be appropriately changed according to the beam to be attached. In addition, the shape is not limited to a long shape, and any object that elaborates in design is also included in the scope of the present invention as long as the beam partially covers the beam. Further, a chamfer may be applied to an edge of the wooden plate-shaped body of this embodiment.

The reason why the wooden plate-like body 2 of this embodiment is formed to be 300 mm slightly smaller than the width of the beam is as follows.
As shown in FIG. 5, the beam 11 of the protective fence 10 to be attached (the most frequently used general roadside protective fence) has upper and lower elevations 11a and 11b, respectively, and the dimensions from the upper end to the lower end thereof. Is 300 mm, which is the same as the size. With this width dimension, the wooden plate-like body 2 can be formed by the upright projection 11a and the upright projection 11a.
b, and does not protrude above the elevational protrusion 11a and below the elevational protrusion 11b, so that it can be attached to the beam 11 in a more stable state.

The length of the wooden plate 2 is 4000 mm.
The length of each beam 11 of the protective fence 10 to be attached is 4300 mm, and the distance between adjacent beams 11 is 3
0 mm is superimposed and attached.
The beams 11 are attached at intervals of 0 mm, which corresponds to this. With such a length, it is possible to fix one beam to the protective fence while fixing the beam to the beam, which is adjacent to and partially overlapped with the beam.

The wooden plate 2 is provided with a bolt through hole 3 at a position corresponding to the bolt insertion hole 13 of the beam 11 when the beam is attached to the beam 11. Specifically, as shown in FIG. 1, the wooden plate 2 has bolt through holes 3a, 3b, 3c, and 3d near four corners, respectively. When the wooden plate 2 is attached to the beam 11, it is shown in FIG. As described above, the bolt insertion holes 13a, 13b formed in the vertical projections 11a, 11b of the beam 11 correspond to the bolt through holes 3a, 3b, respectively.

Then, the wooden cover 1 for the protective fence is attached to the protective fence 1
0, as shown in FIG.
The wooden plate 2 is moved to the beam 11 in a state where the beam 11 and the beam 11 disposed adjacently are partially overlapped.
On one side (road side) and fixed with bolts 14. Thereby, the wooden cover 1 for protection fence can be attached to the protection fence 10 together with the connection of the beams 11 that are stuck adjacent to each other.

For the existing protective fence, after removing the bolts fixing the beams to be adhered adjacent to each other, the wooden cover 1 for the protective fence is attached to one side of the beam (road side).
, And fixed in place of long bolts.

As described above, the wooden cover 1 for the fence of the present invention can be easily attached to the beam of the fence.
The protection fence can be attached to an existing protection fence very easily, and the advantage of using wood can be provided to the protection fence. Further, even when the wood part is partially damaged, maintenance is extremely easy since only the damaged wooden plate-like body needs to be replaced.

The material constituting the wooden plate 2 may be any material as long as it is wood, but may be pine, cypress, cedar, toga,
Conifers such as fir can be suitably used. In this embodiment, a large amount of trees are planted for utility poles after the war in order to make effective use of tree resources. At present, the use of the poles is extremely small.

After the wooden plate 2 is sawn into a required shape, it is preferable to dry it naturally or artificially and to remove the dust. Further, the wooden plate-like body 2 is preferably subjected to an antiseptic / anterior treatment, and this antiseptic / antibiotic treatment is preferably performed by vacuum pressure injection. This allows the chemical solution to penetrate deeply into the wood, reacting with the components in the wood and fixing it. The vacuum pressure injection is a method in which the wooden plate-like material 2 is inserted into a large liquid injection can, the inside of the can is placed under a vacuum atmosphere, and pressure is applied to penetrate the chemical into the wooden plate-like material.

Further, the wooden plate 2 is subjected to a surface treatment in order to enhance the antiseptic property, the antifungal property, the antifouling property, the weather resistance, the waterproofness and the alkali resistance, or the cracking and warping of the wood. Preferably.

As a paint used for the surface treatment, it is preferable to apply a waterproof coating agent or a hydrophobic coating agent containing silicone or ethanol as a main component. It is preferable to apply a nylon resin or the like having excellent alkali resistance or toughness.

As shown in FIG. 2, the wooden plate 2 has a reinforcing material 4 attached to one side (the side of the support 12 of the protective fence 10 to be attached). The reinforcing material 4 of this embodiment uses melamine-impregnated paper, which can improve the strength of the wooden plate-like body, and strengthens the wooden plate-like body even if the wooden plate-like body is broken by an impact such as a collision. Since the cracks are attached to the material, it is possible to prevent the material from being exposed in a sharp shape and from scattering fragments.

As an adhesive for joining the wooden plate 2 and the reinforcing material 4, epoxy resin, acrylic resin, EVA
Resin-based, vinyl acetate resin-based, silicone resin-based, polyurethane-based, phenolic resin-based, and inorganic adhesives can be suitably used.

Although the reinforcing material 4 of this embodiment is adhered to the entire back surface of the wooden plate 2, a partially adhered material is also included in the scope of the present invention. However, it is preferable that it is stuck on the entire surface. As the reinforcing material 4 of this embodiment, melamine-impregnated paper is used, but carbon fiber or glass fiber formed into a sheet (for example, carbon fiber cloth or glass fiber cloth),
Thin sheets of reinforced wood (wood board material impregnated with synthetic resin such as phenolic resin), reinforced plastic (glass fiber or cotton cloth as a reinforcing material and impregnated with synthetic resin, such as FRP) May be used.

As shown in FIG. 3, it is preferable that a light emitting tape 5 or a reflection sheet that emits light at night or the like is adhered to the front surface side (road side) of the wooden plate-like body 2.
Further, in order to reinforce the bolt through-hole 3, it is preferable that a cylindrical metal link (not shown) is embedded in the bolt through-hole 3.

(Example) From the pine laminated wood, a melamine-impregnated paper (thickness: 0.2 mm) was adhered to one surface of the pine glued wooden cover (1000 m in length, 145 in width, and 15 in thickness).
6 mm) were manufactured as Examples 1 to 4.

(Comparative Example) From pine laminated wood (length 1000)
m × width 145 × thickness 15.4 mm) were prepared and Comparative Examples 1 and 2 were prepared without sticking melamine-impregnated paper (thickness 0.2 mm).

(Test) Using a material testing machine TCM-5000, the span conditions shown in FIG.
Below, the wooden plate-shaped body 60 is supported at two points indicated by upward arrows at intervals of 90 cm, and L is set to 3 from above.
The two points indicated by the divided downward arrows are the crosshead speed:
By pressing at 10 mm / min, the breaking load and the displacement with respect to the load were measured. Then, the bending strength is calculated from the breaking load, the bending Young's modulus is calculated from the displacement with respect to the load, and the following is calculated.

The test results shown in Table 1 were obtained.

(Test results)

[Table 1]

From the above test results, the breaking load, bending strength,
Both the bending Young's modulus and the numerical value of the example were larger than those of the comparative example. In the above test, none of the examples resulted in destruction, and the test was completed with a displacement of about 9 cm. From these test results, it was confirmed that the strength and elasticity of the wooden plate were improved by sticking the melamine-impregnated paper.

Next, the guard fence of the present invention will be described with reference to one embodiment shown in FIGS. The protective fence 10 of this embodiment is a road-side protective fence, and as shown in FIG. 3, includes a metal column 12 and a metal beam 11 affixed to the metal column 12 in a horizontal direction. Fence 10
A protective fence wooden cover 1 covering at least one side of the metal beam 12 is provided. Hereinafter, each component will be described sequentially, but the wooden cover 1 for the protective fence is as described above, and the detailed description is omitted.

The metal posts 12 are for holding a metal beam 11 described later at a required height, and are erected at predetermined intervals (in this embodiment, at intervals of 2 m). In addition, the erecting of the metal pillar 12 is performed by casting concrete and fixing the base end.

The metal beam 11 is a portion that constitutes a beam and functions as a fence. As shown in FIG. 4, the metal beam 11 is formed in a curved shape following the curve of a road.

The metal beam 11 of this embodiment is:
As shown in FIG. 5, it is formed in a substantially W-shaped cross section, and its three bent portions are provided with flat portions extending in the vertical direction. In other words, these three flat portions form the upright convex portions 11a and 11b protruding toward the road and the upright concave portion 11c provided at an intermediate portion between them.

Then, the two metal beams 11 adjacent to each other are fixed together with the wooden cover 1 for protective fence by bolts 14 in the state where the two adjacent metal beams 11 are overlapped at the raised convex portions 11a and 11b. That is, the wooden cover 1 for the guard fence is fixed together with the connection of the two adjacent metal beams. As shown in FIGS. 5 and 6, the metal beam 11 and the metal column 12 are fixed via the bracket 15 at the vertical recess 11c.

As shown in FIG. 4, the protective fence wooden cover 1 is continuously adhered to the road 70 side of the metal beam 11 by the above-described fixing method, and the metal beam 11 bends. Also at the site, the wooden cover 1 for the protective fence is curved and adhered following the curve.

The protective fence wooden cover has a sufficient bending strength as shown in the above-mentioned test results, and even if the metal beam 11 is relatively curved as shown in FIG. It bends following the curve. In addition to fixing the metal beam 11 and the wooden cover 1 for the guard fence together with the connection between the two adjacent metal beams described above, as shown in FIG. It is preferable to use this method. In this case, the metal beam 1
It is necessary to form a bolt insertion hole (not shown) and a bolt through hole (not shown) in predetermined portions of the wooden cover 1 and the protective fence wooden cover 1. Further, it is preferable that the bolts, nuts, fastening means, and the like are plated with rust-preventive zinc. Further, the protective fence 10 of this embodiment has the protective fence wooden cover 1 attached only to the road 70 side of the metal beam 11, but the protective fence wooden cover is also attached to the support side of the metal beam. It may be worn.

Next, another embodiment of the protective fence of the present invention shown in FIG. 8 will be described. Protective fence 30 of this embodiment
Is a protective fence for a separation zone. The basic difference from the road-side protective fence 1 is that metal beams 32 and 33 are attached to both sides of a metal column 31, respectively. The point is that the above-mentioned wooden cover 1 for protective fence is attached to the outside of each of 32 and 33. As described above, the wooden cover 1 for a protective fence may be used as a protective fence for a separation zone, and such a protective fence is also included in the scope of the present invention.

The spacing member 34 is for fixing the metal beam 32 and the metal beam 33 at both ends thereof to maintain the spacing. The metal beam 32 and the metal beam 32 have a horizontal length. 33 is set.

Further, another embodiment of the protective fence of the present invention shown in FIGS. 9 and 10 will be described. The protective fence 40 of this embodiment is suitable for use as a fence in a park or the like, and includes a plurality of wooden columns 41 and a wooden beam 42 attached between the wooden columns 41.
2 has a reinforcing material 44 attached to the side surface of the support 41. Hereinafter, each configuration will be sequentially described.

The wooden column 41 of this embodiment has a substantially columnar shape, is divided vertically into two parts, and is joined by arranging a reinforcing member 43 inside as shown in FIG. ing. The reinforcing member 43 is used for the wooden beam 4 described later.
2 is provided to extend in a direction substantially perpendicular to the attaching direction. With such a structure, it is possible to more firmly support the impact from the wooden beams 42 attached to both sides.

Wooden beam 4 attached between wooden columns 41
As shown in FIG. 10, reinforcing material 4
4 is stuck. As a result, the strength of the wooden beam can be improved, and even if the wooden beam is broken by an impact such as a collision, the reinforcing material has a breached portion, so that the reinforcing material is exposed in a sharp shape or a piece of wood is removed. Spattering can be prevented.

In this embodiment, the wooden beams 42 are attached to both sides of the wooden column 41, but may be attached to only one side. Also, the protective fence 40 of this embodiment is
One wooden beam on one side is attached in the horizontal direction,
One in which a plurality of wooden beams are attached in the vertical direction is also included in the scope of the present invention. Then, the wooden beam 42 is attached to the wooden column 41 by a stainless steel bolt 45 as shown in FIG.

The diameter of the wooden column 41 in this embodiment is
It is preferably about 100 mm to 120 mm.
2 has a width of about 250 mm to 350 mm and a thickness of 20 m
It is preferably about m to 40 mm. The height of the wooden column 41 may be appropriately set according to the installation location, and the wooden beam 42 may be used.
Is also appropriately set according to the standing interval of the wooden columns 41.

In this embodiment, melamine-impregnated paper is used as the reinforcing materials 43 and 44. The reinforcing materials 43 and 44 are formed by forming carbon fiber or glass fiber into a sheet (for example, carbon fiber cloth or glass fiber cloth). Wood (wood board material impregnated with synthetic resin such as phenolic resin)
Thin plate, reinforced plastic (glass fiber or cotton cloth as a reinforcing material, impregnated with synthetic resin, such as FR
A thin plate of P) may be used.

The material forming the wooden pillar 41 and the wooden beam 42 may be any material as long as it is wood.
Conifers such as larch, cypress, cedar, toga, and fir can be suitably used. In this embodiment, a larch pine glue is used.

After the wooden pillar 41 and the wooden beam 42 are sawn into a required shape, they are dried naturally or artificially.
It is preferable to remove the dents. Further, it is preferable that the wooden pillar 41 and the wooden beam 42 have been subjected to an antiseptic and ant-preventive treatment.

Further, the wooden pillar 41 and the wooden beam 4
2 is antiseptic, antifungal, antifouling, weatherproof, waterproof,
The surface treatment is preferably performed to increase the alkali resistance or to prevent cracking or warping of the wood. As the paint used for the surface treatment, those described above can be suitably used.

[0055]

According to the first aspect of the present invention, the advantage of using wood (the impact received by a person or a vehicle at the time of a collision can be reduced. The protective fence itself is protected from the impact and the damage is reduced. It can be easily and inexpensively formed with a protective fence equipped with the surrounding environment.) It is easy to maintain and can be used for existing protective fences. According to the second and third aspects of the present invention, in addition to the effect of the first aspect, the wooden cover for the fence can be more easily attached to the fence. According to the invention described in claim 4, the danger when the wood portion is destroyed can be further reduced. According to the invention described in claim 5, according to claim 4,
In addition to the above effects, the plate-like body can be made as a wooden composite reinforced board at a lower cost. According to the invention described in claim 6, the advantage of using wood (the impact received by a person or a vehicle at the time of a collision can be reduced. The protection fence itself is protected from the impact and the damage is reduced. ) Can be formed easily and inexpensively, and maintenance is easy. According to the invention described in claim 7, in addition to the effect of claim 6, the wooden plate-like body can be more easily attached to the protective fence. According to the invention described in claim 8, in addition to the effects of claim 6 and claim 7, the danger when the wood portion is destroyed can be further reduced. Claim 9
According to the invention described in (1), in addition to the effects of claims 6 to 8, the wooden plate-like body can be made as a wooden composite reinforced board at a lower cost. According to the tenth and eleventh aspects of the invention, it is possible to further reduce the danger when the timber portion of the protective fence is destroyed. According to the twelfth aspect, in addition to the effects of the tenth and eleventh aspects, the wooden plate-like body can be a wooden composite reinforced board at a lower cost.

[Brief description of the drawings]

FIG. 1 is a front view of an embodiment of a wooden cover for a fence according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a front view for explaining a method of attaching the protective fence wooden cover shown in FIG. 1;

FIG. 4 is a use explanatory view showing a state in which the protective fence wooden cover shown in FIG. 1 is continuously attached to a guard rail.

FIG. 5 is a sectional view taken along line BB of FIG. 3;

FIG. 6 is a plan view of the vicinity of a column shown in the center of FIG. 3;

FIG. 7 is an explanatory diagram for explaining a test method.

FIG. 8 is a partial front view of another embodiment of the protective fence of the present invention.

FIG. 9 is a front view of another embodiment of the protective fence of the present invention.

FIG. 10 is a plan view of the protective fence shown in FIG.

FIG. 11 is a front view of a conventional protective fence.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wooden cover for protective fence 2 Wooden plate body 3 Bolt through hole 4 Reinforcement material 5 Light emitting tape 10 Protective fence 11 Metal beam 12 Metal column 13 Bolt insertion hole 14 Bolt 15 Bracket 16 Fastening means

Claims (12)

[Claims] 1. A wooden cover for a protective fence, comprising a wooden plate that covers at least one surface of a beam of the protective fence. 2. The wooden plate-like body is attached to the protective fence together with the connection of the beam and a beam attached adjacent to the beam, or together with the fixing of the column and the beam of the protective fence. The wooden cover for a fence according to claim 1, which is capable of being used. 3. The wooden cover for a protective fence according to claim 1, wherein the wooden plate-shaped body has a bolt through hole at a position corresponding to a bolt insertion hole of the beam when attached to the beam. 4. A protective plate comprising a wooden plate covering at least one side of a beam of a protective fence, wherein the wooden plate is provided with a reinforcing material attached to a side surface of a column of the protective fence. Wooden cover for fence. 5. The wooden fence according to claim 4, wherein the reinforcing material is melamine-impregnated paper. 6. A protective fence comprising a metal post and a metal beam attached to the metal post, wherein the protective fence covers at least one surface of the metal beam. A protective fence having a wooden cover. 7. The protective fence wooden cover may be connected to the metal beam and a metal beam attached adjacent to the metal beam, or may be connected to the metal post of the protective fence. 7. The fence according to claim 6, wherein the fence is attached to the fence together with a metal beam. 8. The protective fence according to claim 6, wherein the wooden cover for the protective fence has a reinforcing material attached to a side surface of the metal post of the protective fence. 9. The protective fence according to claim 8, wherein the reinforcing material is melamine-impregnated paper. 10. A protective fence comprising a plurality of wooden posts and a wooden beam attached between the wooden posts, wherein the wooden beam has a reinforcing material attached to a side surface of the column. 11. The protective fence according to claim 10, wherein the wooden column includes a reinforcing member provided therein so as to extend in a direction substantially perpendicular to a direction in which the wooden beams are attached. 12. The protective fence according to claim 10, wherein the reinforcing material is melamine-impregnated paper.