JP2002339535A - Treadboard for staircase - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate a step formed between a treadboard and a ceiling cornice attached to a rear surface of the treadboard of a box-type staircase, to prevent a toenail of a person from being caught on the step when he climbs up the staircase, and especially to protect a handicapped person or an elderly person from being wounded at his toenail caused by the step. SOLUTION: There is provided a new treadboard for the staircase, according to which a stair-nosing of the treadboard is curved, and subjected to curving finish so that it is continuously connected to a portion corresponding to the curved edge, whereby the treadboard and the curved edge are formed in one body. Thus, no step is formed between the treadboard and the curved edge, which contributes to prevention of injury at the toenail.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a box-type wooden stair tread used in a house or the like.

[0002]

2. Description of the Related Art Residential stairs include a box type and an open type, and a mixed type of the box type and an open type.
The box type has at least one of the left and right sides or both left and right sides surrounded by a wall. On the other hand, in the open type, there is no wall on one or both sides, and instead, a handrail is hung on a column attached to the tread plate, thereby ensuring safety. In the box type, the lower part of the stairs is a space surrounded by a wall, and is usually used as a storage box. Therefore, a vertical riser is attached between the treads so as to hide the lower space so that the lower space cannot be seen while going up and down the stairs.

[0003]

Since the soles of pedestrians are in direct contact with the footboards of stairs used in homes, they absorb moisture when the room is humid as well as flooring, and are over-dried. Sometimes wood materials that release moisture are preferred. Materials such as synthetic resins that condense on the surface in humid conditions are dangerous because pedestrians may slip, and their feet are inferior to wood materials. In addition, the step board with moderate elasticity, by walking while walking up and down, moderately curved by the weight of the pedestrian,
It absorbs the impact of applying weight when walking and improves walking feeling. In this regard, wooden treads made of wood or plywood manufactured from timber are most suitable as stairs for houses, and most of the stairs for houses currently used are woody at present. . In addition, woody wood is preferred to have a natural wood grain design, and thus a woody base material such as a glued laminated lumber made of natural wood or a plywood laminated with a natural wood veneer is often used.

By the way, in the case of high-grade stairs, as shown in FIG. 2, the nose of the tread plate has a curved surface, and a peripheral edge 1 having a concave curved surface is attached to a corner where the back surface of the tread plate and the riser plate intersect. Some have improved designs. Also,
This peripheral edge can also be expected to prevent kicking. However, as for these peripheral edges, first, a step plate is attached to the side plate of the stairs, subsequently, a riser plate is attached, and finally, the peripheral edge is attached. This step does not cause much problem in design, but the upper step may cause injuries such as toenails being easily caught on the step when the nose is about to trip and the nails being peeled off. There is a danger of becoming.

[0005] Since the box-shaped stairs are surrounded by the wall as described above, their feet are generally dark. For this reason, lighting is provided, but since the proof device is usually attached to the wall or ceiling, the illuminating light is blocked by the pedestrian's own shadow, and the foot is often not effectively illuminated. For this reason, accidents such as stumbling or stepping out are not stopped. In the case of a box-type tread, in order to improve the design, as shown in FIG. 2, in order to smooth the corner where the back of the tread and the riser intersect,
As mentioned earlier, the peripheral edge 1 may be attached,
Although the peripheral edge 1 has a secondary effect of preventing stumbling besides the purpose of the design, as described above, a step is generated, which is not sufficient as a safety measure. It is not impossible to extend the peripheral edge to the dotted line part in FIG. 2 and smoothly connect with the nosing part of the tread plate. There is. In particular, since the sharp tip portion is easily changed in shape, even if the dotted line portion in FIG. 2 is in close contact with the nostril immediately after the construction, the sharp tip portion may be turned up later, which is dangerous.

[0006]

SUMMARY OF THE INVENTION The present invention solves the above problems. The present invention will be described with reference to the drawings. FIG. 1 is a perspective explanatory view illustrating the shape of an example of a tread plate according to the present invention, and the upper diagram of FIG. 3 is a cross-sectional view particularly illustrating the shape near a step. The lower diagram of FIG. 3 is a cross-sectional view illustrating another shape of the tread according to the present invention.

The stepping plate for a staircase of the present invention is a stepping plate of a box-shaped wooden staircase having a peripheral edge on a back surface, and a stepped nose portion is a convex curved surface. The curved surface is formed smoothly and continuously, and the step plate and the peripheral edge are formed as an integral structure. In FIGS. 1 and 3, a is a nose, b is a portion corresponding to the periphery of a conventional staircase, and a and b are:
It has an integrated structure cut out of the same material together with other treads. Note that d is a groove into which the riser is inserted, and may be engraved before mounting the tread plate or may be engraved at the time of installation. c is a convex portion which is inserted into a groove formed in the side plate at the time of stair mounting, and is processed so that the convex portion fits into the side plate at the construction site according to the interval between the left and right side plates. Is done.

A second aspect of the present invention is a box-type wooden stair tread, wherein the tread is made of a wood laminated timber. If an example of the manufacturing method is shown, first, FIG.
In the above, a laminated wood having a shape shown by a solid line is manufactured, and a wood glue or other woodworking machine is used to cut out a shape shown by a dotted line.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION In order to attach a stair step board of the present invention to a house, first, as in the case of ordinary wooden stairs, a groove for inserting a step board is cut into a side plate as shown in FIG. I do. The groove depth is about half the thickness of the side plate, and is usually about 15 mm. Next, the side panels are attached to the structural members of the house. Subsequently, as shown in FIG. 6, a tread is inserted into the groove of the side plate from the back side of the stairs, a riser is attached, and finally, a wedge is inserted so that the tread does not loosen.

[0010]

EFFECTS OF THE INVENTION The step board of the box-type staircase of the present invention has a curved surface formed on a nose portion where a toe hits and is likely to be injured when a pedestrian goes up and down, so that the impact when hitting is reduced. I do. In addition, the part corresponding to the peripheral edge is formed of a continuous smooth curved surface, and this part is a part that is easy to hit the tip of the toe when climbing the stairs, and injuries such as peeling off the nail of the toe This is the part that causes The step board of the present invention has a smooth curved surface,
Since there are no steps at all, it greatly contributes to the protection of elderly people whose motor skills and sense of body balance have deteriorated.

[Brief description of the drawings]

FIG. 1 is a perspective view illustrating the shape of a tread according to the present invention.

FIG. 2 is a cross-sectional view illustrating the shape of a known step board and a peripheral edge.

FIG. 3 is a cross-sectional view illustrating the shape of a tread according to the present invention.

FIG. 4 is a cross-sectional view for explaining an example of the method for manufacturing a tread according to the invention of claim 2;

FIG. 5 is an explanatory view of groove processing of a side plate.

FIG. 6 is an explanatory view of a mounting state of a tread according to the present invention.

[Explanation of symbols]

 a Nose b Part corresponding to the peripheral edge c Projecting part inserted into the side plate d Groove into which the riser is inserted e Wedge 1 Peripheral edge 2 Raise plate

Claims (2)

[Claims] 1. A tread of a box-shaped wooden staircase having a peripheral edge on a back surface, wherein a stepped nose is a convex curved surface, and a convex curved surface of the stepped nose and a concave curved surface of a peripheral edge are smoothly continuous on the rear surface of the stepped plate. A step board of a box-shaped wooden staircase, wherein the step board is formed integrally with the step board and the peripheral edge. 2. The tread of a box-type wooden staircase according to claim 1, wherein the tread is made of wood glued timber.