JPS6049742B2 - Anti-slip structure for stairs - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an anti-slip structure constructed on the upper surface of the front edge of a concrete staircase.

A non-slip pad is attached to the top of the front edge of each step to prevent the stairs from slipping down when going up or down.

As a non-slip material, a material made of rubber or a synthetic resin with the same effect is placed inside the groove provided in the metal base fitting.
Those that are fitted so as to protrude from the top surface are often used. Conventional methods for constructing such anti-slip features on concrete stairs include locking the base metal fittings to anchor metal fittings buried at the same time as concrete pouring, as described in Utility Model Publication No. 36-1567; Kosho 40
As described in Publication No. 30131, after concrete is poured, a hole is formed in the concrete base material corresponding to the screw position of the base metal fitting, a nut is embedded, and the base metal fitting is attached using this nut and screw. It is.

However, in both cases, it is necessary to embed the anchor fitting and nut, and it is difficult to align the anchor fitting or nut with the screw hole of the base fitting, resulting in extremely poor workability.

The present invention has focused on the fact that screws that can be screwed directly into concrete have been invented in recent years, and an object of the present invention is to provide an anti-slip structure that solves the above problems using this screw.

In order to achieve this object, in the anti-slip structure of the present invention, a base metal fitting is provided on the upper surface of the front edge of the concrete staircase over the entire horizontal length thereof, and a base metal fitting is provided on the upper surface of this metal fitting in the length direction. A groove is formed, this groove is filled with an anti-slip material, a through hole communicating with the concrete base material of the front edge of the step stool is formed in the base metal fitting in the groove, and the concrete base material corresponding to the through hole is formed. A pilot hole is formed inside, and a concrete screw inserted through the hole is screwed into the pilot hole to fix the base metal fitting to the concrete base material.

With this configuration, there is no need to bury metal fittings during concrete pouring and afterwards, and by drilling a pilot hole in the concrete base material through the through hole of the base metal fitting, and screwing a concrete screw into this pilot hole. The base metal fittings can be fixed to the concrete base material, making it very easy to work with.

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

As shown in the figure, the anti-slip 1 is formed of a base metal fitting 2 and a non-slip material 4 filled in a longitudinal groove 3 formed on the upper surface of the base metal fitting 2.

Although an example is shown in which two grooves 3 are provided in parallel, the number of grooves 3 and their cross-sectional shape are not limited to those shown in the drawings.

The anti-slip material 4 is made of a material with an anti-slip effect, such as rubber or a synthetic resin having the same effect, and is filled in the groove 3.
For example, the cross-sectional shape shown in the figure should have sufficient strength to prevent it from coming off.

When the anti-slip material 4 is filled into the groove 3, the upper surface protrudes from the surface of the base metal fitting 2 to an appropriate height, a rough surface 5 for anti-slip is provided on the upper surface, and a rough surface 5 for anti-slip is provided on the lower surface. An arcuate groove 6 may be provided along the longitudinal direction to facilitate filling. If the anti-slip material 4 cannot be filled into the groove 3 unless it is heated and made pliable, it is preferably filled into the groove at a factory. Anti-slip material 4
When the anti-slip material 4 is attached to the base metal fitting 2, the concrete screw 7 should be inserted at the desired position on the upper surface of the edge of the step BtCJ of the stairs A. Section 8 is provided.

In the case of the example shown in FIGS. 1 and 2, this insertion portion 8 is formed by a vertical hole penetrating vertically.

After construction, the insertion portion 8 may be closed with a plug 9 made of the same material as the anti-slip material 4 or various fillers, and an adhesive may be used in combination. In the examples shown in FIGS. 3 and 4, the insertion portion 8
, and the stopper 9 is adapted to fit into this notch.

In the example shown in FIGS. 5 and 6, the insertion portion 8 is formed by a notch made from the upper surface in the width direction of the anti-slip material A, and the non-slip material 4 is left at the bottom of this notch. A stopper 9 that fits into this notch is separately prepared.

Note that a through hole 10 into which the concrete screw 7 is inserted is provided in the base metal fitting 2 at a position facing the insertion portion 8 by processing at a factory or on site. In the embodiment shown in FIG. 6, a hole 11 for providing a through hole 10 in the base metal fitting 2 is formed by a groove 6. Next, the construction method of the above embodiment will be explained.

First, the base metal fitting 2 is filled with the non-slip material 4 and the insertion portion 8 is formed, and the base metal fitting 2 and the non-slip material 4 constitute the non-slip 1. After installing this anti-slip 1 on the upper surface of the front edge of the step B of the stairs A over the entire length in the lateral direction, it is inserted into the concrete base material with a drill through the through hole 10 provided in the base metal fitting 2 so as to communicate with the insertion part 8. Drill the pilot hole 12.

Next, the concrete screw 7 inserted into the through hole 10 from the insertion portion 8 is screwed into the prepared hole 12.

The concrete screw 7 advances while cutting a screw into the pilot hole 12, and fixes the base metal fitting 2 to the concrete base material of the staircase A. Thereafter, by inserting a separately prepared plug 9 into the insertion portion 8, the attachment of the anti-slip 1 is completed as shown in FIGS. 2, 4, and 6.

That is, the anti-slip structure of the present invention is constructed. Note that the base metal fittings 2 to be stacked on the step B of the stairs A may be fixed using adhesive or mortar.

[Brief explanation of the drawing]

1, 3, and 5 are perspective views of embodiments of the anti-slip structure according to the present invention, and FIGS. 2, 4, and 6 are sectional views of the embodiments. 2...Base metal fitting, 3...Groove, 4...
...Anti-slip material, 7...Concrete screw,
10... Through hole, 12...... Pilot hole.

Claims (1)

[Claims] 1. A base metal fitting is provided on the upper surface of the front edge of a concrete staircase over its entire horizontal length, and a groove is formed in the length direction on the upper surface of this metal fitting, and this groove is filled with an anti-slip material. A through hole communicating with the concrete base material of the front edge of the step stool is formed in the groove base metal fitting, and a pilot hole corresponding to the through hole is formed in the concrete base material, and the through hole is inserted through the hole. A non-slip structure for stairs characterized in that a concrete screw is screwed into the pilot hole to fix a base metal fitting to a concrete base material.