JPH0790804A - Elastic road surface decking - Google Patents

Abstract

PURPOSE:To obtain braking force more than that on an asphalt road surface at the time not only when a road surface is in a frozen state but also when in a dry state by providing protruding strips, each having a triangular section and a slant face, in a sawteeth way on a mat. CONSTITUTION:An elastic rubber mat 1, wherein slant faces 2 are provided on protruding strips 3 while being opposed to the advancing direction of an automobile, is laid on a road surface. This imparts speed reduction action due to gravity as in the case of traveling an up-grade road to a wheel, on a flat road. In downward traveling on a slope, braking action due to gravity as in the case of traveling an up-grade road is imparted to a wheel so as to provide physical speed reduction action. Particularly, car weight partial to front wheels when braking is applied is decreased by the slant faces 2 to secure braking force of rear wheels. Accordingly, braking force more than that on an asphalt road surface can be obtained even when a road surface is in a dry state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elastic road surface laying plate having an inclined pattern surface to be laid on a road in order to prevent vehicle accidents due to freezing of the road in winter.

[0002]

2. Description of the Related Art Conventionally, a method of preventing a vehicle accident due to freezing on a normal road (asphalt, concrete) in winter has been generally solved by using a tire with spikes, but in recent years, spikes have been used. Dust pollution by tires has become a problem, and it has become obligatory to switch to studless tires. Especially in the snowy areas of Tohoku and Hokkaido, frozen ice burn accidents frequently occur, which is a serious problem. As a means to solve this, by laying on the road an elastic road surface laying plate in which a slip-resistant pattern is formed on the surface rubber layer of a mat made of natural rubber or synthetic rubber, the frozen ice burner is destroyed when passing through the vehicle. It scatters and has a considerable effect on preventing vehicle slip.

This kind of conventional elastic road surface laying plate is shown in FIGS. 11 and 1 as various anti-slip patterns provided on the surface rubber layer.
As shown in Fig. 2, a large number of grooves (c) are provided at a predetermined interval on the upper surface of the surface rubber layer (b) of the soft underlayer buffer layer (b), and these grooves (c) are perpendicular to the traveling direction of the road. An elastic rubber mat 1B is provided which is laid as shown in FIG.
3 and FIG. 14, a soft underlayer buffer layer (a)
An elastic rubber mat 2B in which a large number of dot-shaped studs (d) are arranged in a lattice pattern or a zigzag pattern on the upper surface of the surface rubber layer (b) is disclosed in Japanese Patent Laid-Open No. 164505/55.

[0004]

Both the elastic rubber mats 1B and 2B having the anti-slip patterns described in the prior art, when the vehicle passes by, are bent by the weight of the vehicle to be bent so that the frozen ice burner is prevented. It is very effective in preventing slipping by destroying and scattering this, and the vehicle gliding on the ice burner. However, in both anti-slip patterns, since the pattern surface is formed into a flat surface, the tire easily slips on the surface of the elastic rubber mat, and the rubber hardness of the surface rubber layer is set to about HsA55. hand,
Increase the amount of deformation when receiving the weight of the vehicle
It was revealed by the skid resistance test that since the effect of destroying the tire is enhanced, the pattern is less likely to be caught on the tire and the braking force of the tire is inferior.

The elastic rubber mat is used when the vehicle is braked before the intersection where the vehicle stops most often or when the vehicle is downhill.
Since the tire is laid so as to stop without slipping and constitutes the road surface of the road, the mat surface is not in an ice burn state, for example, it is in a dry state or the surface is wet. Even under normal road conditions such as conditions or water film formation, braking force equivalent to or higher than that of asphalt or concrete road surfaces must be obtained. However, in the skid resistance test (detailed description was given in the section of the description of examples below, showing a table of skid numerical values), the conventional elastic rubber mat 1
Patterns B and 2B have a skid value that is considerably lower than that on an asphalt road in a dry condition, a condition in which the surface is wet, and a condition in which a water film has formed. It was shown to be slippery. This means that both the elastic rubber mats 1B and 2B have the effect of destroying the ice burner and preventing the gliding surface from gliding, but they also receive the heat generated by the deformation of the underlayer buffer layer to melt and melt the snow. Even if there is an ice effect, there is a problem that it is slippery under normal road conditions other than so-called ice burn such as a dry state, a surface is wet, a long braking distance of the tire, and lack of safety. .

The present invention has been made in view of the above points, and it is an object of the present invention to provide a pattern having an inclined surface with a certain slope or more on the surface of an elastic rubber mat to provide a flat road. Deceleration by gravity when operating on an uphill road, and when descending a slope, the acceleration of gravity applied on the downhill is controlled by the gravity due to gravity when operating on an uphill road. By giving a physical action, a physical deceleration action is given, and in particular, when braking is applied, the vehicle weight that is biased to the front wheels is reduced and the braking force of the rear wheels is secured as much as possible, so that it is equivalent to the asphalt road surface or It is an object of the present invention to provide an elastic road surface siding plate having a novel anti-slip pattern that can provide more braking force.

[0007]

In order to achieve the above object, an elastic road surface laying plate having an inclined pattern surface according to the present invention is an elastic rubber mat having an upper surface of an elastic rubber mat, and an inclined surface having a desired slope to be a tread surface of a tire. Is provided in the shape of a saw blade on the whole.

On the upper surface of the elastic rubber mat, a ridge having a triangular cross section having an inclined surface having a desired slope which becomes a tread surface of the tire,
It is preferable that the entire surface is intermittently provided in a saw-tooth shape through flat valleys, and a large number of studs are arranged to project on the inclined surface.

It is preferable that the elastic rubber mat is laid on a road with an inclined surface serving as a tread surface of a tire facing the traveling direction of the vehicle.

The hardness of the surface rubber layer is preferably HsA80.

The slope α of the inclined surface of the ridge is preferably α> 5 °.

The elastic rubber mat has a rubber hardness of HsA.
Although the rubber layer of 40 to HsA90 exerts a sufficient effect, an elastic road surface laying plate is obtained by laminating an anti-hard rubber layer of rubber hardness HsA60 to 90 on a soft base buffer layer having a rubber hardness of HsA40 to HsA60. Can also be formed.

[0013]

With the elastic rubber mat, the slanted surface provided on the ridge is laid facing the traveling direction of the automobile, so that the sloping surface provided on the ridge has a certain slope or more and runs on an uphill road on a flat road. When decelerating due to gravity, the gravitational acceleration applied on the downhill is applied to the wheels by giving a braking effect due to gravity when traveling on an uphill road. It gives a physical deceleration action, especially by reducing the vehicle weight biased to the front wheels when applying a brake and ensuring the braking force of the rear wheels as much as possible, in a dry state, a state where the surface is wet, In the state where the water film is formed, a braking force equal to or higher than that of the asphalt road surface can be applied. Further, the ridge having a surface hardness of HsA80 is hard to be crushed even when the wheel rides on the inclined surface, and a proper contact area and a gap serving as a drainage groove can be surely secured at the contact portion between the wheel and the inclined surface. The bite is also improved and good grip performance is obtained, and a large slip prevention effect is obtained by the synergistic effect of the freezing ice burner effect of the elastic rubber mat and the braking effect on the vehicle due to the inclined surface pattern. To be

As an example, when an elastic rubber mat having a hardness of HsA80 is laminated on the upper surface of a base cushioning layer having a hardness of HsA40, a pattern of a saw blade-shaped ridge is formed when a wheel of an automobile or the like has a heavy weight. Efficiently deforms and destroys the frozen ice burner or the surface of the pressed snow, and the base cushioning layer is further distorted to generate a large amount of heat of the rubber, and this large heat is transmitted to the upper rubber layer and is transferred to the upper surface of the rubber layer. Ice and pressure snow are melted, and the snow melt is discharged to the outside of the rubber mat through a groove formed by an inclined surface provided on the ridge. As a result, a large slip accident can be prevented by the synergistic effect of the freezing ice burner scattering effect of the elastic rubber mat and the braking effect of the inclined surface pattern on the vehicle.

[0015]

[Embodiment 1] Referring to the drawings, Embodiment 1 will be described. As shown in FIGS.
A ridge 3 having an inclined surface 2 with a predetermined slope is provided on the upper surface so as to have a saw-tooth shape as a whole, and this elastic rubber mat 1 has a structure in which the inclined surface 2 serves as a tread surface of a vehicle tire. Lay facing the direction of travel.

When the elastic rubber mat 1 is laid on a flat surface of a road, it is preferable that the ridge 3 is formed in a right-angled triangle having a bottom side a, a hypotenuse b and a perpendicular line c as shown in FIG. In order to effectively provide a physical deceleration action due to the gravity of the vehicle when the slope b, that is, the slope 2 travels on an uphill road, the slope angle α between the base a and the slope b is α> 5. It is preferably °.

In addition, when the elastic rubber mat 1 is laid toward the downhill of a road as shown in FIG. 5, a physical blur due to the gravity of the vehicle, such as when traveling uphill, is used.
In order to exert the action and effectively reduce the gravitational acceleration of the vehicle applied on the downhill, the inclination angle α of the hypotenuse b is preferably larger than the road gradient β, that is, α-β> 0 °. .

[0018]

[Embodiment 2] In Embodiment 2, an elastic rubber mat 1A
As shown in FIGS. 6 and 7, the upper surface of the saw blade 3a is a right angled triangular cross section having an inclined surface 2a with a predetermined slope, and the valleys 4 are formed at predetermined intervals to intermittently cover the entire saw blade. It is formed so as to have a shape.

[0019]

Third Embodiment In the third embodiment, as shown in FIGS. 8 and 9, the elastic rubber mat 2A is provided with the ridges 3b via the valleys 4b similarly to the elastic rubber mat 1A shown in the second embodiment. The surface of the inclined surface 2b of 3b is divided into a large number of blocks through the groove 5, and a large number of stats 6 are projected on the surface of the inclined surface 2b for each block in a lattice or staggered manner.

The elastic rubber mat 1 of Example 1 is formed as an abrasion resistant rubber plate having an elastic composition of rubber, urethane and a thermoplastic elastomer or a composite thereof, and is shown in FIG. So that the hardness is H
It is preferable that a soft rubber plate of about sA40 is laminated on the upper surface of the base buffer layer 7 to form a surface rubber layer. Further, the elastic compositions and the rubber hardness of each layer shown above are the same in Examples 2 and 3.

[0021]

[Table 1]

Table 1 above shows the numerical values obtained by the skid resistance test. The vehicle weight of the test vehicle is 1080 kg and the front axle load is 67.
At 0 kg and rear axle load of 410 kg, on a normal road surface, that is, on asphalt, the dry skid value is 97, the wet skid value is 72, and the water film is 81. is there. On the other hand, in the conventional example 1 shown in FIG. 11, in the conventional elastic rubber mat 1B having the surface hardness HsA55, the dry skid value is 82, and the wet skid value is 4 on the surface.
8, the skid numerical value 43 in the state where the water film is generated is. Further, in the conventional example 2 shown in FIG. 13, in the conventional elastic rubber mat 2B having the surface hardness HsA55, the dry skid value is 82, the surface wet value is 66, and the water film is formed. Had a skid value of 46.

In the above test results, the dry state,
The skid values for the condition where the surface is wet and the condition where a water film is formed are much lower than the asphalt road for both conventional elastic rubber mats 1B and 2B, and they are very slippery compared to the asphalt road surface. There was found. This means that both the elastic rubber mats 1B and 2B have the effect of destroying the ice burns and preventing the gliding surface from gliding, but in normal road conditions, so-called dry conditions and wet surface conditions. Since it is slippery, it is shown that the braking distance of the tire is long when there is no icing, which is unsafe.

In the elastic rubber mat 1 of Example 1 in Table 1 above, the dry skid value is 112, the wet skid value is 75, and the water film is 72. is there.

In the elastic rubber mat 1A of Example 2, the dry skid value was 112, the wet skid value was 75, and the water film was 67. .

In Examples 1 and 2 described above, a skid value higher than that of the asphalt road surface is shown in a dry state or a state where the road surface is coated, and is lower than that of the asphalt road surface in the state where a water film is formed. Although it is a skid value, it is acceptable as a range of braking force. In Example 3, by providing the studs on the inclined surface having the rubber hardness of HsA80 of Example 2, it was possible to increase the catching rate of the studs with respect to the tire. Therefore, the breaking of the frozen ice burner and the improvement of the braking force were achieved. It is a thing.

[0027]

Since the present invention has the above-mentioned structure,
The elastic rubber mat according to the present invention, when a wheel of a vehicle such as an automobile has a heavy weight, is deformed by a sawtooth-shaped ridge pattern to destroy a frozen ice burner or a snow-compacted surface layer, and a base material. The buffer layer is further distorted to generate a large amount of heat generated by the rubber, and this large heat is transmitted to the upper rubber layer to melt the ice and pressure snow on the upper surface of the rubber layer, and from the groove formed by the inclined surface provided on the ridge. Discharge the snow melt to the outside of the rubber mat.
And, the inclined surface with a certain gradient or more provided for the surface ridge,
On a flat road, it gives a deceleration effect due to gravity when operating on an uphill road, and when descending a slope, the gravity acceleration applied on the downhill is applied to the wheels as when driving uphill road. By providing a braking action due to the gravitational force, a physical deceleration action is given, and in particular, when the braking is applied, the vehicle weight deviated to the front wheels is reduced to secure the braking force of the rear wheels as much as possible. As a result, due to the synergistic effect of the splashing effect of the frozen ice vane of the elastic rubber mat and the braking effect of the inclined surface pattern on the vehicle, not only when the road surface is in the ice vane state, but also when the road surface is in the ice vane state. -Under normal road conditions, for example,
Even in a dry condition, a condition where the surface is wet, or a condition where a water film is formed, it is possible to apply a braking force equal to or higher than that of an asphalt road surface, and it is possible to greatly prevent slip accidents. Play.

[Brief description of drawings]

FIG. 1 is a perspective view of an elastic rubber mat of the present invention.

FIG. 2 is a plan view of an elastic rubber mat of the present invention.

FIG. 3 is a sectional view taken along line XX of FIG. 2 showing an elastic mat of the present invention.

FIG. 4 is an enlarged sectional view of an essential part showing a state when the elastic rubber mat of the present invention is laid on a flat surface of a road.

FIG. 5 is an enlarged sectional view of an essential part showing a state where the elastic rubber mat of the present invention is laid on a downhill of a slope.

FIG. 6 is a perspective view of an elastic rubber mat according to another embodiment of the present invention.

FIG. 7 is a sectional view taken along line YY of FIG. 6 showing an elastic rubber mat according to another embodiment of the present invention.

FIG. 8 is a perspective view of an elastic rubber mat according to still another embodiment of the present invention.

9 is an enlarged cross-sectional view of a main part of FIG. 8 of an elastic rubber mat according to still another embodiment of the present invention.

FIG. 10 is a perspective view showing the elastic rubber mat of the present invention laminated on a base buffer layer.

FIG. 11 is a perspective view of a conventional elastic rubber mat.

FIG. 12 is a cross-sectional view of a conventional elastic rubber mat.

FIG. 13 is a perspective view of another conventional elastic rubber mat.

FIG. 14 is a cross-sectional view of another conventional elastic rubber mat.

[Explanation of symbols]

 1 elastic rubber mat 2 inclined surface 3 ridge 4 valley 5 groove 6 stat 7 base buffer layer

Claims (2)

[Claims] 1. An inclined pattern surface, characterized in that an upper surface of an elastic rubber mat is provided with a ridge having a triangular cross-section having an inclined surface of a desired slope to be a tread surface of a tire in a saw-tooth shape as a whole. Elastic roadbed. 2. A ridge having a triangular cross section having an inclined surface of a desired slope which serves as a tread surface of a tire is provided on the upper surface of the elastic rubber mat intermittently in a saw-tooth shape over a flat valley.
An elastic road surface laying plate having an inclined pattern surface, characterized in that a large number of studs are arranged on the inclined surface in a protruding manner.