JPH06240833A - Decorative structure of stair - Google Patents

Abstract

PURPOSE:To install and execute a woody decorative tread, a step-in board, etc., mounted on a stair made of steel so that a fixed screw, etc., are not viewed and the installation and execution are conducted easily by operation from the top face side of the stair. CONSTITUTION:Treads 3 made of steel at each stage have falling pieces 3a and rising pieces 3b in front and rear edges. The upper and lower ends of step-in boards 4 are fixed to the falling pieces 3a and rising pieces 3b of the upper and lower treads 3 made of steel by fixtures 6 such as tapping screws. The positions of the lower ends of the step-in boards 4 are made slightly higher than the top faces of the treads 3 made of steel at that time, and groove sections 5 are formed among the step-in boards 4 and the treads 3 made of steel. Notched grooves 15a are formed to the front edges of top faces and engaging projections 15b to the rear end faces respectively in decorative treads 15 arranged onto the treads 3 made of steel. The engaging projections 15b are engaged with the groove sections 5 under the step-in boards 4, thus preventing the floating of the rear sections of the decorative treads 15. The front sections of the decorative treads 15 are fixed to the treads 3 made of steel by the fixtures 6 mounted into the notched grooves 15a. Stair-hosing decorative materials 16 having an L-shaped cross section are fitted into the notched grooves 15a and fastened with adhesives, etc., and the fixtures 6 in the notched grooves 15a are covered while the fixtures 6 at the upper ends of the step-in boards 4 are covered.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a staircase makeup structure in which a steel staircase is provided with a wooden decorative stepboard or riser plate.

[0002]

2. Description of the Related Art Conventionally, a general stairway attached to a house having a steel frame structure is constructed as shown in FIGS. That is, a pair of left and right side girders 20 made of shaped steel,
Steel steps 21 of each step are placed between 20 and welded to obtain a stair step that is completed in terms of strength. The wooden stair step plate 22 and the riser plate 24 are attached to the steel stairs with wood screws 23 to apply makeup. The wood screw 23 is screwed in from the back side of the steel step plate 21 so that it cannot be seen from the front side of the decorative step plate 22.

[0003]

However, as described above, the work of mounting the decorative step plate 22 and the wood screw 23 of the riser plate 24 is performed from the back side of the steel stairs, so that the work is performed in an upward posture and the workability is improved. Is bad. In addition, since the work is performed from the back side in this way, after the staircase is provided under the stairs, for example, the decorative material such as the decorative step plate 22 cannot be attached. Depends on other processes. Therefore, it becomes difficult to arrange the workers of the job types required for each process of the building, which causes a wasteful waiting time, which is one of the causes of delaying the construction period.

An object of the present invention is to easily attach a decorative material such as a decorative step plate or a riser plate from the upper surface side of a steel staircase, and a fixture such as a mounting screw is not exposed on the surface. The purpose is to provide a staircase makeup structure.

[0005]

In the decorative structure for stairs of the present invention, a decorative step plate or the like is attached to each of the steel step plates in the following manner. The steel step plate shall have a falling piece and a rising piece at the front and rear edges, respectively. The lower end of the upper riser of the steel step plate is fixed to the front surface of the rising piece of the steel step plate with a fastener. In this case, the lower end of the riser plate has a height at which a groove is formed between the lower end of the riser plate and the upper surface of the steel step plate. The lower riser is fixed at its upper end to the front surface of the falling piece of the steel stage with fasteners. The decorative step plate arranged on the steel step plate has an engaging projection on the rear end surface that engages with the groove portion formed under the riser plate, and has a notch groove along the front edge of the upper surface. Shall have. The decorative step plate is fixed to the steel step plate by a fastener provided in the cutout groove. An upper surface plate portion of a nose-decoration material having an inverted L-shaped cross section is fitted into the cutout groove, and the front plate portion of the nose-decoration material covers the upper end of the lower riser plate.

[0006]

According to this structure, in the decorative step plate of each step, the engaging projection of the rear end engages with the groove portion between the riser plate and the steel step plate to prevent floating and to fix the front end. It is fixed to the steel plate by the tool. The fixing device for fixing the front end of the decorative step plate is covered with the nosing cosmetic material. The riser plate has its upper and lower ends fixed to the falling pieces and rising pieces of the upper and lower steel step plates with fasteners, but the upper end fasteners are covered with a nosing cosmetic material, and the lower end fasteners are decorative step plates. Covered with the thickness of. Therefore, each fastener has a structure invisible from the surface side of the stairs. In addition, after the mounting of the riser plate, by adopting the work procedure of attaching the lower decorative plate, the decorative plate and the riser plate can be fixed only by the work from the upper surface side of the stairs.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described with reference to FIGS. This staircase makeup structure is a steel staircase A to which each decorative material is applied. The steel stair A is configured by interposing a steel step plate 3 of each step between a pair of left and right side girders 1 and 1 made of channel steel or the like. Each steel step plate 3 is placed on an inverted U-shaped step plate support member 2 welded onto the side girder 1, and is fixed to the step plate support member 2 by welding or screws.

As the decorative material, a decorative step plate 15, a riser plate 4, and a nose decorative material 16 each made of wood are used.
The riser plate 4 of each step is fastened and fixed to the front surface of the falling piece 3a and the rising piece 3b of the upper and lower steel step plates 3 with fasteners 6 such as tapping screws. In this case, the lower end position of the riser plate 4 is slightly higher than the upper surface of the steel step plate 3, and the groove 5 is formed between the lower end of the riser plate 4 and the upper surface of the steel step plate 3.

The decorative step plate 15 has a notch groove 15a on the upper surface of the front end.
However, the engaging ridges 15b are respectively processed at the rear ends and are arranged on the steel step plate 3. In this case, the decorative step plate 15 is such that the rear end engaging projection 15b is inserted into the groove 5 formed between the riser plate 4 and the steel step plate 3, and the tapping screw is formed in the notch groove 15a at the front end. It is fixed to the steel step plate 3 with a fixture 6 such as. The groove portion 5 is a tapered groove with the lower end surface of the riser plate 4 as a tapered surface so that the engaging protrusion 15b can be easily inserted. The engagement protrusion 15b also has a tapered cross section corresponding to the groove 5.

The cut-out groove 15a of the decorative step plate 15 is fitted with the upper surface plate portion 16a of the nose-decorative decorative material 16 having an inverted L-shaped cross section and fixed with an adhesive, and the front surface plate portion 16b of the upper end portion of the riser plate 4 is used. Cover the part.

The upper end of the top riser plate 4 is engaged with the ascending frame 7 on the upper floor. That is, in the upper floor portion of the stairs, the ascending frame 7 is arranged on the pier 8 with its front part protruding from the pier 8, and is fixed to the pier 8 by a fixture 9 such as a nail. The upper end of the top riser plate 4 is engaged with the groove 7a formed on the lower surface of the front portion of the rising frame 7. Floor material 10
Engages with the cutout groove 7b of the upstile 7. Bottom riser 4
The lower end of is fixed by sandwiching it between the floor material 14 on the lower floor and the hitting material 12. The hitting material 12 is fixed to the floor base 11 with nails 13.

The procedure for applying each decorative material is as follows. That is, in each stage, the lower end of the riser plate 4 on the upper stage side is fixed by the fixing tool 6, and then the decorative stage plate 15 is placed on the steel stage plate 3. As a result, it is possible to avoid the decorative step plate 15 from becoming an obstacle when the fastener 6 at the lower end of the riser plate 4 is tightened. The fixing work of the decorative step board 15 and the riser board 4 may be performed by alternately alternating the riser board 4 and the decorative step board 15 from the upper side,
Alternatively, the decorative step plate 15 may be fixed after fixing all the riser plates 4.

According to the makeup structure of this construction, the fixing tool 6 at the lower end of the riser plate 4 is hidden by the thickness of the makeup step board 15, and the fixing tool 6 at the upper end of the riser board 4 and the fixing tool at the front end of the makeup step board 15. 6 is covered with a nosing cosmetic material 16. Therefore, each fastener 6
Will not be visible on the surface of the stairs. The fixing of the decorative step plate 15 by the fastener 6 is performed only at the front part, but at the rear end, the engaging projection 15b engages with the groove 5 under the riser plate 4, so that the rising is prevented. Further, according to this configuration, by performing the above-described construction procedure, all the work can be performed only from the upper surface side of the stairs. Therefore, the workability is good and the construction time is short. In addition, the mounting time of each decorative material is not affected by other processes. For example, the decorative material can be attached even after the construction of a storage room or the like has been performed on the lower side of the stairs. Therefore, it becomes easy to arrange various craftsmen of the building, and it is possible to reduce the dead time due to waiting for the process. Further, according to this configuration, the steel stair A can be constructed quickly after the steel frame of the building is assembled, and the steel stair A can be used as a scaffold for work.

[0014]

According to the staircase decorative structure of the present invention, the upper and lower ends of the riser plate are attached to the falling pieces and rising pieces formed at the front and rear edges of the steel step plate with fasteners, respectively, and the stairs are arranged on the steel step plate. The decorative step plate is inserted into the groove formed between the lower end of the riser plate and the steel step plate to prevent it from rising, and the front end is fixed to the steel step plate by the fastener in the notch groove. Since the nosing decorative material is fitted in the cutout groove, the structure is such that each fixing tool is not exposed on the front surface side, but mounting of each decorative material such as the decorative step plate is only performed from the upper surface side of the steel step plate. Can be done. Therefore, the workability is good, and the mounting time of the decorative material can be selected without being influenced by other processes.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a main part of a staircase that is an embodiment of the present invention.

FIG. 2 is a perspective view showing a plate mounting structure of steel steps of the stairs.

FIG. 3 is a side view showing the mounting structure of the steel step plate.

FIG. 4 is a vertical cross-sectional view showing a main part of a conventional staircase.

FIG. 5 is a plan view of the relevant part.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Side girder, 2 ... Step board support material, 3 ... Steel step board, 3a ... Falling piece, 3b ... Rising piece, 4 ... Raising board, 5 ... Groove part, 6 ... Fixing tool, 15 ... Decorative step board, 15a ... Notch groove, 15b ... Engagement ridge, 16 ... Nosing cosmetic material, 16a ... Top plate part, 16b ...
Front plate part

Claims (1)

[Claims] 1. A steel step plate of each step is provided with a falling piece and a rising piece at front and rear edges respectively, and a lower end of a riser plate on an upper side of the steel step plate is formed of the steel step plate. The fixing member is fixed to the front surface of the rising piece at a height such that a groove is formed between the upper surface and the upper surface, and the upper end of the lower riser plate is fixed to the front surface of the falling piece with a fixing member to engage with the groove portion. A decorative step plate having a mating engaging ridge on the rear end surface and having a notch groove along the front edge of the upper surface is arranged on the steel step plate, and the decorative step plate is fixed in the notch groove. Of the staircase provided with a nose-decorative material having an inverted L-shaped cross-section, which is fixed to the steel step plate with a tool, the upper surface plate part is fitted in the notch groove, and the front plate part covers the upper end of the lower riser plate. Makeup structure.