JP2568060B2 - Anti-slip material - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-slip material for preventing slippage on stairs or the like installed outdoors.

[0002]

2. Description of the Related Art In cold regions such as Hokkaido and the Tohoku region where the road surface freezes for a long period of time in winter, stairs to platforms on stations and slopes of various public facilities,
It is dangerous because the road surface and stairs will freeze and slip easily when passing over it.

In general, stairs and the like are provided with an anti-slip plate having a large number of lateral grooves formed at the edge of each step as a measure against slippage.

[0004]

However, in the above-mentioned conventional anti-slip plate, the function of the anti-slip plate is often impaired because snow or the like is frozen to form an ice surface of a considerable thickness on the anti-slip plate. . For this reason, water or hot water is sprayed so as to break the ice surface, or snow melting materials, antifreezing materials, etc. are sprayed.

However, such processing requires a lot of manpower and wastes unnecessary energy and materials. If the ice surface can be broken, it can be removed relatively easily, but it is not easy to break the surface, and some auxiliary means has been desired.

In the present invention, attention is paid to the problem of ice surface removal associated with the slip prevention material in such conventional stairs, and
When the ice layer surface is not formed at a temperature of ℃ or more, it acts as a slip prevention plate on stairs and road surfaces, and when the ice layer surface is laminated at 0 ° C or less, the ice layer surface is attached to the ice layer surface due to the weight of passersby. It is an object of the present invention to provide an anti-slip material that can easily crack and remove the ice layer surface.

[0007]

As a means for solving the above problems, the present invention provides a flat rubber base material with grooves in a predetermined pattern on the surface thereof, and the base material spaces partitioned by the grooves are provided. Is a structure of an anti-slip member in which a protruding portion of a low temperature hard rubber material is embedded, and the back surface of each space is formed in a concave shape from the back surface of a flat base material.

[0008]

The anti-slip material of the present invention having the above-mentioned structure acts as a normal anti-slip material when an ice layer surface is not formed thereon at a temperature of 0 ° C. or higher. This is because the projections and grooves of each base material space function as friction portions.

However, when the ice layer surface is formed on the slip prevention material at 0 ° C. or lower, the function of the slip prevention material is hindered. In this case, the anti-slip material acts to promote cracking of the ice layer surface.

When an ice layer surface is formed on the anti-slip material, the surface easily slips, but if the rider puts weight on the surface with care, the weight is transmitted to the base material space through the protrusion. . This is because when the projection temperature is 0 ° C. or less, the elasticity is lost and it acts as hard rubber.

When the base material space is depressed, a slight gap is created at the edge portion of the boundary with the base material space, and stress due to the load concentrates and acts there, so that the ice layer surface is easily cracked. For this reason, the ice layer surface that was in close contact with the anti-slip material is peeled off and easily removed.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an external perspective view of the slip prevention material of the first embodiment, FIG. 2 is an external perspective view as seen from the back surface, and FIG. 3 is a sectional view as seen from the arrow III-III in FIG. The slip prevention material 1A of this embodiment comprises a horizontal portion 1 and an inclined portion 1 '. The horizontal portion 1 is made of a flat base material 2 made of soft rubber, and a groove 3 having a predetermined depth is formed on the surface thereof in a predetermined pattern shape. In this embodiment, the base material 2 has a thickness of about 5 m.
m, and the groove depth is about 3 mm. Of course, it goes without saying that the size is not limited to this.

The predetermined pattern shape is provided in a cross shape so that the space 4 partitioned by the groove 3 becomes a rhombus in this embodiment. Near the center of the space 4, a protrusion 5 made of a low temperature hard rubber material is provided.

The recessed portion 6 shown in FIG. 2 is formed on the back surface of the substrate 2, and is provided corresponding to the protruding portion 5 of the space 4, as can be seen from the cross section of FIG.

The slanted portion 1'is similar to a normal slip preventing material, and as shown in FIG. 3, V-shaped grooves 3'are provided in parallel on a plurality of slanted surfaces. The spacing between the grooves 3'is an appropriate pitch.

The soft rubber of the base material 2 described above is a general synthetic rubber having a hardness of about 50, and the elasticity does not change so much even if the temperature is 0 ° C. or lower. On the other hand, the low temperature hard rubber material of the protrusions 5 has the same elasticity as the base material 2 at 0 ° C. or higher, but the hardness increases to around 90 at 0 ° C. or lower.

As such a low-temperature hard rubber, for example, a softening agent is added to polynorbornene to adjust the second-order transition point (glass transition point) to around 0 ° C., and a crosslinking agent is added to this. Various additives containing carbon black, metal oxide, etc. as a reinforcing agent and a filler are known. Therefore, any of these low temperature hard rubbers may be used, as long as the hardness changes greatly from 60 to 70 to 90 at room temperature and 0 ° C or less.

FIG. 4 is a plan view of the slip prevention material 1B of the second embodiment, and FIG. 5 is a slip prevention material 1C of the third embodiment.
FIG. The second and third embodiments are the same as the first embodiment except that the shape of the space 4 partitioned by the groove 3 is a circle or a quadrangle (square). The same functional members are designated by the same reference numerals and the description thereof will be omitted.

Any of the above-mentioned embodiments is used, for example, as an anti-slip material for stairs. An example of such use is shown in FIG. As shown in the figure, the slip prevention materials 1A, 1B, and 1C of any one of the above-described embodiments are provided over the entire width at the edge end of the step portion.

When a person goes up and down such stairs, generally, when he goes up, his weight is concentrated around his heel when he goes down to his toes. When the weight is concentrated and the load acts on the anti-slip material in this way, even if the ice layer surface is laminated on the anti-slip material, the ice layer surface is divided by the weight of the person to easily remove the ice. can do.

Now, imagine that an ice layer surface having a constant thickness is laminated on the slip prevention material 1A shown in FIG. The ice layer surface may be thick enough to cover the projections 5 and upper layers (FIG. 7).
reference). The body weight concentrated on the toes or the heel LEG is directly or directly on the ice layer surface ICE on at least one or several protrusions 5.
Is transmitted through.

In this case, the protrusion 5 is hard even near the freezing point, but the base material of the space 4 retains the soft property.
Therefore, the load transmitted from the ice layer surface ICE to the protrusion 5 is dispersed in the space 4, but the space 4 is depressed near the center of the protrusion 5 and is compressed as a whole.

Therefore, as shown in FIG. 7, the ice layer surface ICE corresponding to the corners of the space 4 is liable to be broken from the corners due to the concentrated stress concentrated on the corners. K indicates a crack. The ice layer surface ICE can be easily separated from the anti-slip material 1 if a crack K is formed in a part thereof, and the ice layer surface ICE can be crushed to an appropriate size and easily treated.

[Brief description of drawings]

FIG. 1 is an external perspective view of a slip prevention material according to a first embodiment.

FIG. 2 is a perspective view of the same slip prevention material as seen from the back side.

FIG. 3 is a sectional view taken along the line III-III in FIG.

FIG. 4 is a plan view of an antislip material of a second embodiment.

FIG. 5 is a plan view of an antislip material of a third embodiment.

FIG. 6 is an external perspective view of the slip prevention material of the first embodiment installed on the stairs.

FIG. 7 is a diagram for explaining breakage of the ice layer surface on the slip prevention material.

[Explanation of symbols]

 1A, 1B, 1C Anti-slip material 1 Horizontal part 1'Inclined part 2 Base material 3 Groove 4 Space 5 Projection part 6 Recessed part 10 Stairs

Claims (1)

(57) [Claims] 1. A flat rubber base material is provided with grooves in a predetermined pattern on the surface thereof, and each base material space partitioned by the groove is provided with a protruding portion of a low temperature hard rubber material embedded therein to form a groove of each space. The back surface is a slip prevention material that is formed by recessing the back surface of a flat base material.