KR200215817Y1 - Rubber tile for visually disabled person - Google Patents

Abstract

The present invention provides a rubber blind (1) having a convex portion (3 ') (3 ″) embossed on the surface (2) to guide the position and direction of the sole or cane when the visually impaired person walking. Regarding, by adding an appropriate amount of polyvinyl chloride resin powder in addition to the NBR synthetic rubber of the base material, the rubber tile for the visually impaired (1) of the present invention due to poor chemical resistance and aging resistance when made of conventional rubber only It can prevent cracks, stain resistance and easy to wash.

Description

Rubber Tiles for the Visually Impaired {RUBBER TILE FOR VISUALLY DISABLED PERSON}

The present invention relates to a rubber tile for the visually impaired. More specifically, the rubber for the visually impaired is installed on the floor of the building and embossed on the surface to guide the current position and direction to the visually impaired by the touch of the sole or the cane while walking. It's about tiles.

Public offices, major public facilities, and sidewalks are provided with induction tiles that provide separate directions and current locations for the safety and convenience of the visually impaired. These induction tiles have been manufactured mainly from general synthetic or natural rubber.

Pedestrian directions and locations for the visually impaired in virtually every place around us, such as pedestrian crossings, subway ticket gates, bus stops, building stairs, entrances in front of elevators, and toilet entrances of public institutions. It is preferable that induction rubber tiles should be installed to guide them, but because they are weak and have to be replaced frequently, they cannot satisfy the wishes because they cannot be satisfied in terms of cost and construction, and they are installed only in very specific places. It is present.

Moreover, these rubber tiles have been relatively short in life due to low chemical resistance and aging resistance, and most of all, they are easily contaminated by oil, soil, dust, etc., and are not easy to remove. There was a seemingly fatal problem that quickly became dirty.

Therefore, the present inventors can increase the chemical resistance, aging resistance and contamination resistance of the existing rubber tile, and in order to develop a rubber tile which is easy to remove the contamination even when contaminated with soil, oil, etc., and does not change color and shrinkage. As a result of research and experimentation, it has been found that the above problems can be solved simply by modifying the material.

That is, in the present invention, a visually impaired person who can take advantage of both materials by incorporating a specific plastic resin into rubber so as to compensate for aging, discoloration, contamination, and shrinkage, which are disadvantages of existing rubber products. It is intended to provide rubber tiles for use.

1 is a perspective view of one embodiment of a rubber tile for the blind according to the present invention,

2 is a cross-sectional view taken along line A-A of FIG.

Figure 3 is a perspective view showing a state in which the rubber tile for the visually impaired of Figure 1 installed with the indoor flooring,

Figure 4 is a perspective view of another embodiment of the rubber tile for the blind according to the present invention,

5 is a perspective view of an application example when the rubber tile for the visually impaired according to the present invention is applied to an outdoor buried type.

※ Explanation of symbols for main parts of drawing

1: Rubber Tile 2: Surface

3 ′, 3 ″: Convex portion 4: Flooring

5: support layer 6: back side

According to the present invention, in a rubber tile for the visually impaired, comprising a surface having a convex portion such as a circle or a bar, and a back surface bonded to a flooring material, polyvinyl chloride is used as a synthetic rubber of butadiene acrylonitrile rubber (NBR) as a main component. ) Powder is added by a ratio of 1/5 to 1/3 of the total weight of the synthetic rubber, characterized in that formed by integrally molding each other.

Synthetic rubber used as a main component in the rubber tile of the present invention is butadiene acrylonitrile rubber (NBR) having excellent compatibility with polyvinyl chloride, and various copolymers of butadiene and acrylonitrile in various mole ratios can be applied. have.

In addition, the polyvinyl chloride resin (PVC) mixed in the rubber is a vinyl chloride homopolymer or a copolymer of vinyl chloride and vinyl acetate, vinyl chloride and higher vinyl ether copolymer, vinyl chloride and vinyl acetate and maleic acid derivative. Various copolymers such as copolymers can be applied, and they can be applied differently depending on the installation place.

If polyvinyl chloride powder is added at less than 1/5 of the total weight of the synthetic rubber, desired aging and chemical resistance may not be obtained, and if the amount is more than 1/3 of the total weight of the synthetic rubber, the surface is slippery. Pedestrians are likely to fall and should be added within this range.

This rubber tile is generally formed with the largest yellow color among the colored colors for the visual effect that can be easily recognized even by low-sighted people. However, the rubber tile may be formed in the same color as the flooring material or other colors for harmony with indoor and outdoor flooring.

Hereinafter, described in detail with reference to the accompanying drawings to facilitate understanding of the features of the rubber tile for the blind according to the present invention.

1 to 3 are diagrams illustrating a round braille guide tile for position indication indicating the current position of a pedestrian as an aspect of the rubber blind 1 for the visually impaired.

That is, the rubber tiles 1 for the visually impaired people in these drawings are mainly used for indicating the location of the branching point, the waiting point, the starting point, the destination point, and the danger zone, etc. In order to grasp the current position, a plurality of round-shaped display protrusions 3 'are formed of a surface 2 which is embossed at regular intervals and a back surface 6 which is bonded to the flooring 4 of the building.

Rubber tile for the visually impaired according to the present invention (1) is a convex portion for display by a molding machine of the type shown in Figures 1 and 3 after mixing a good amount of rubber and polyvinyl chloride resin powder in the above range 3 'is integrally formed with the surface 2 and the back surface 6; After being integrally molded, the rubber tile 1 undergoes a finishing operation to remove unnecessary parts such as a burr around, and is then dried at room temperature to be completed.

The rubber tile 1 for the visually impaired according to the present invention formed as described above is applied to the back surface 6 by applying an appropriately selected adhesive agent among ordinary synthetic resins in consideration of the properties of the flooring material 4 of the building, as illustrated in FIG. 3. Bonded to the flooring (4).

And unlike the round-shaped display projections 3 'of the surface 2 of FIG. 1, a plurality of linear, bar-shaped projections 3 " shown in FIG. It serves to guide the direction to pedestrians and is manufactured in the same manner as described above and has the same physical properties.

The rubber tile 1 for the visually impaired person of the convex part 3 ″ for guiding the bar type is installed not only indoors but also in banks, post offices, churches, hospitals, pedestrian crossings, overpasses, and the like.

In order to more clearly understand the features of the rubber blind (1) for the visually impaired according to the present invention will be described in the following embodiment. However, this embodiment is described as an example, and variations and corrections are possible without departing from the scope of the present invention and the scope of the utility model registration request.

Example 1

Butadiene acrylonitrile rubber (NBR) and a copolymer powder of vinyl chloride and vinyl acetate were added to a hopper so that the ratio was 5: 1, and a very small amount of polyurethane resin was added thereto to knead well.

After kneading, it was put into a molding machine of a desired shape and then molded, and cooled at room temperature, followed by finishing to form a rubber tile.

In addition, except that the copolymer powder of vinyl chloride and vinyl acetate was not used at all, except that it was made of butadiene acrylonitrile rubber (NBR) alone, all were processed in the same manner to form a rubber tile.

Thus formed two rubber tiles of the same shape were tested in the same manner as in Table 1 to examine the physical properties.

Table 1

Item (unit) result Test Methods Invention Control standard Hardness (shore A) 76 78 KS M 651896 Tensile Strength (㎏ / ㎠) 116 110 ASTM D 412 Elongation (%) 520 480 ˝ Ozone crack test: 50 ± 5pphm, 40 ± 2 ℃, 20% elongation, 72 hours No crack offshoot ASTM D 1149 Residual strain (%) 2.8 3.1 KS M 3802-98 Cold resistance: -40 ± 2 ℃, 20 hours No crack offshoot KS M 6522-96 Abrasion Resistance-Weight Loss (g) 0.64 0.9 ASTM C 501 UV test-ΔE 1.54 3.20 ASTM D 4329

As is clear from Table 1, the rubber tile according to the present application has excellent physical properties such as basic hardness and tensile strength, and has excellent physical properties as a sidewalk tile conforming to the Korean Industrial Standard (KSTM) and the American Industrial Standard (ASTM). It was found that cracking and residual strain due to exposure to sunlight were very low and aging resistance was higher than that of the conventional rubber-only control standard.

In addition, the rubber tile (1) according to the present invention can be applied to the support layer (5) made of waste tires or waste rubber chips, as well as the support layer of existing cement or ceramic for outdoor use, in this case Figure 5 As shown in the figure, the adhesive is applied to the back surface 6 of the rubber tile 1 and then bonded together to be integrally formed for outdoor embedding.

Therefore, according to the rubber tile for the visually impaired in the present invention, the conventional rubber tile breaks down when it is exposed to sunlight for a long time, and solves the inconvenience and uneconomical disadvantage of frequent replacement, and also minimizes discoloration, contamination and shrinkage. It is easy to wash, and the soil is easily removed by simply mopping. The gloss is beautiful and the strength is good.

In addition, it is resistant to heat, ultraviolet rays, and ozone, so that it is hardly injured by them, and its chemical resistance is also good, so that the surface is not cracked and cracked and can be used almost semi-permanently, which can provide considerable convenience to the visually impaired.

Moreover, when used for outdoor use, bonding the support layer made of waste rubber or waste tire to the lower part prevents environmental pollution by using chips or scraps of rubber products such as waste tires, which are currently pointed to cause serious environmental problems. There is also a side benefit of recycling resources.

Claims (1)

In the rubber tile for the visually impaired is formed of a surface protruding to the outside and the back surface bonded to the flooring material, the convex portion for the display of the circle or bar shape is embossed on the surface, To the synthetic rubber of butadiene acrylonitrile rubber (NBR) in which the rubber tile (1) is a main component, polyvinyl chloride powder is added in a ratio of 1/5 to 1/3 of the total weight of the synthetic rubber, A rubber tile for the visually impaired, characterized in that the convex portions (3 ') (3 ″) and the front and back surfaces (2) and (6), which are embossed on the surface, are formed in one piece.