JPH0714528Y2 - Stair block - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a stair block suitable for safety and practicality, in which a stone plate different in color from the tread is attached to the top of the staircase. .

[Prior Art] The present inventors have developed a method of manufacturing a step block having a substantially lateral shape by a centrifugal molding method using a concrete raw material in which crushed granite and cement are mixed,
Furthermore, by applying this centrifugal molding method, a patent application was previously filed for a method for manufacturing a staircase block in which natural stones are adhered only to the tread surface of the staircase block or to both the tread surface and the kick surface (for example, Japanese Patent Application No. Sho 59-127754 No. 62/91752).

[Problems to be solved by the invention] However, although the staircase block produced by such a manufacturing method has a feature that it is economical and aesthetically pleasing, the tread surface and the kick surface of the staircase block have the same color, and the color tone is different. Since there is no physical contrast, when carelessly going up or down the stairs, an accident such as stepping off and injuring is often caused.

That is, in the stairs of a station building where people come and go frequently, there are many accidents resulting in injury or death due to stepping off the stairs. Is. The fact that the stairs can be easily stepped off means that it is difficult to confirm the width of the treads of the stairs when the stairs are moved up and down, and the treads of the stairs are worn and slippery.

[Means for Solving the Problems] The present invention has been made paying attention to such a situation, and as a result of the research by the present inventors, it is not only excellent in economy and aesthetics, but also as a stair block, it is safe. Succeeded in manufacturing an extremely tall stair block. That is, the purpose of the present invention is to make it easier to confirm the tread width of the constructed stairs, so that the color tone of the tread varies from the edge on the side of the top of the stairs to the entire top of the stairs. To add color.

[Example] Hereinafter, a staircase block that can achieve the above object will be specifically described. Reference numeral 1 is a staircase block manufactured according to the present embodiment. The staircase block 1 is formed by centrifugal molding into a substantially shape, and a staircase block body 2 and a natural stone plate 3 attached to a top surface 2 ′ of the staircase block body 2. It consists of The staircase block body 2 is cement,
The concrete is made by mixing crushed granite stones as a raw material and is centrifugally molded. The cement and the crushed stones are mixed at a ratio of crushed stones 7 to cement 3, for example, so that the strength of the block matrix 2 is an appropriate value. The friction coefficient of the tread can be maintained at a high level.

The natural stone plate 3 is a natural granite stone having a color tone different from the gray tone of the staircase block base body 2, and for example, a black or brown stone plate is used. Further, a plurality of concave grooves 4 are formed on the back surface of the stone plate 3 to enhance the adhesive force with the staircase block mother body 2.

In the manufacturing process of the staircase block 1, the stone plate 3 is set in a predetermined molding form (not shown) at a position to be the top surface of the staircase block 1, and then the concrete is placed in the molding formwork. After filling, the molding frame is sealed and mounted on a centrifugal molding material (not shown), and then the centrifugal molding machine is driven to integrate the natural stone plate 3 and the stair block matrix 2 made of concrete into one body. The staircase block 1 is centrifugally molded. In this embodiment, the different color stone plate 3
As the natural stone, a natural stone plate is not limited to this, and an artificial stone plate by artificial coloring may be used. Further, when the step block mother body 2 is centrifugally molded, an appropriate muscle material may be embedded in the mother body 2. In this example,
Although the natural stone plate 3 is integrally bonded during the centrifugal molding of the staircase block base body 2, it may be attached by post-processing to the preformed upper surface of the staircase block base body.

[Effects of the Invention] As described above, according to the present embodiment, on the rise surface of the stair block, the tread surface 2 ″ extends from the edge of the tread surface 2 ″ of the stair block 1 to the entire top surface of the walk surface. This is a two-tone staircase block 1 to which a natural stone plate of a color different from that of the above is attached. Therefore, by constructing a staircase as shown in FIG. 2 by using the two-tone color staircase block 1, for example, when the staircase rises, the kick surface 3 and the tread surface 2 ″ of the staircase block are markedly different due to different colors. It is possible to distinguish between them, and it is expected that the stairs will become clearer and the climbing will be easier. This makes it clear that there is less stepping down the stairs when descending, which has the effect of improving safety. Furthermore, since the tread 2 ″ is formed by mixing concrete of crushed natural stone and cement, when the tread of this stair block is stepped on for a long period of time, crushed stone particles of relatively hardness project to the surface. As it is roughened, it has the effect of maintaining stairs with high sliding friction.

[Brief description of drawings]

FIG. 1 is a sectional explanatory view showing an embodiment of a staircase block according to the present invention, and FIG. 2 is an explanatory view showing a construction state of a staircase using the block. 1 ... Stairs block, 2 ... Block matrix 3 ... Ke upper natural stone plate 4 ... Concave groove

Claims (1)

[Scope of utility model registration request] 1. A stony plate having an upper end surface matching the tread surface (2 ″) of the block mother and having a color tone different from the tread color is adhered to the kicking surface (2 ′) of the stair block mother. A staircase block.