JP2000356017A - Staircase tread fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fixture with which fixing work of a staircase tread can be carried out not only from the staircase inside but also from the outside. SOLUTION: A bracket 10 is fastened on a staircase tread 20 by making a first receiver surface 11 of the bracket 10 contact with a left end surface or a right end surface of the staircase tread 20 and passing a machine screw 21 through a through hole 14 of the first receiver surface 11 in case of constructing from the outside of a stairway. Thereafter, the staircase tread 20 is placed on a stairway stringer board 22, a connecting surface 13 of the bracket 10 is made contact with an upper end surface of the stringer board 22, and a second receiver surface 12 of the bracket 10 is made contact with an upper end back surface of the stringer board 22. Thereafter, a nail 2 is inserted from an upper end part opening 15a of a tapered groove 15 and driven. Consequently, the nail 23 intrudes along the tapered groove 15 and driven on an upper end surface of the stringer board through a through hole 16 of the connecting surface 13. Accordingly, the staircase tread 20 is fixed on the stringer board.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stair tread attachment for fixing a stair tread to a stair girder.

[0002]

2. Description of the Related Art As one type of a mounting tool of this type, as shown in FIG. 6, a first receiving surface b which comes into contact with a back surface of a left end portion or a back surface of a right end portion of a stair tread plate a, and an upper end portion of a stair girder c. There is known a metal fitting e having an L-shaped cross section and including a second receiving surface d abutting on the back surface. Using this metal fitting e, the stair treads a to the stair girder c
In order to fix the stair girder c, the stair tread a is placed on the stair girder c, and the second receiving surface d is fixed to the back of the upper end portion of the stair girder c with the screw f from the inside of the stairs. Is fixed to the left back surface and the right back surface of the staircase tread a with screws f.

[0003]

When the above-mentioned conventional L-shaped bracket e is used, a screw f must be driven from the inside of a narrow staircase, and the work is troublesome, and the construction is troublesome. The present invention has been made in view of the above problems, and an object of the present invention is to provide a mounting tool that facilitates a mounting operation of a stair tread.

[0004]

According to a first aspect of the present invention, there is provided a stair stepping plate mounting tool which comes into contact with a first receiving surface contacting a left end surface or a right end surface of a stair stepping plate and a back surface of an upper end portion of a staircase girder plate. There is a connecting surface connecting the lower end of the second receiving surface and the first receiving surface to the upper end of the second receiving surface, and the first receiving surface, the second receiving surface and the connecting surface communicate with each other inside and outside. Forming a hole,
The first receiving surface is formed with a tapered groove for guiding a nail from the outside of the upper end to the through hole of the connecting surface.

[0005]

In order to fix the stair tread to the stair girder using the fixture according to the present invention, the first receiving surface is brought into contact with the left end surface or the right end surface of the stair tread, and screws are applied to the first receiving surface. And the first receiving surface is fixed to the stair tread. When the work can be performed from the inside of the stairs, the second receiving surface is fixed to the back surface of the upper end portion of the stair girder plate by passing screws through the through holes of the second receiving surface.
If work cannot be performed from the inside of the stairs, drive the nail through the tapered groove. Then, the nail is embedded along the tapered groove and is driven into the upper end surface of the stair girder through the through hole in the connecting surface, whereby the stair tread is fixed to the stair girder. As described above, according to the stair step board mounting tool according to the present invention, the mounting tool can be fixed to the stair girder not only from the inside of the stairs but also from the outside, so that the work of mounting the stair step boards is facilitated.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described with reference to the drawings. FIG. 1 shows a stair treadboard mounting bracket 10 according to an embodiment of the present invention. The mounting bracket 10 is formed integrally with a first receiving surface 11 and a second receiving surface 12 and a connecting surface 13 that connects a lower end of the first receiving surface 11 and an upper end of the second receiving surface 12 by press-forming an iron plate. Have been.

[0007] The first receiving surface 11 is formed with a through hole 14 for communicating the inside and outside thereof and a tapered groove 15 having a U-shaped cross section.
A U-shaped through hole 16 is formed in a connecting portion of the connecting surface 13 with the first receiving surface 11. The second receiving surface 12 is formed with a through hole 17 communicating the inside and the outside thereof.

The upper end opening 15a of the tapered groove 15 is first.
A required taper is provided from the upper end portion to the middle portion of the first receiving surface 11 so that the nail inserted from the upper end opening 15a is guided to the U-shaped through hole 16 of the connecting surface 13 and is disposed outside the receiving surface 11. Have been.

The structure of the staircase mounting bracket 10 according to the present embodiment is as described above, and a method of using the same will now be described. When the construction is performed from outside the stairs, as shown in FIGS.
Abuts on the left end surface or the right end surface of the
Then, the mounting bracket 10 is fixed to the stair tread 20 through screws 21. Next, the stair tread 20 is placed on the stair girder 22,
The connecting surface 13 of the mounting member 10 is in contact with the upper end surface of the girder plate 22, and the second receiving surface 12 of the mounting member 10 is in contact with the back surface of the upper end portion of the girder plate 22. Then, the nail 23 is inserted from the upper end opening 15a of the tapered groove 15 and driven. Then, the nail 23 advances along the tapered groove 15 and is driven into the upper end surface of the spar 22 through the through hole 16 of the connecting surface 13. As a result, the stair tread 20 is fixed to the girder 22.

When the work is to be carried out from the inside of the stairs, as shown in FIGS. 4 and 5, the first receiving surface 11 of the mounting bracket 10 is fixed to the left end surface or the right end surface of the stair tread plate 20 with screws 21. The tread plate 20 is placed on the stair girder 22, and a screw 24 is inserted into the through hole 17 of the second receiving surface 12 from the inside of the stairs to attach the mounting bracket 1.
0 is fixed to the beam plate 22.

As described above, according to the staircase mounting plate 10 according to the present embodiment, the mounting bracket 10 can be fixed to the stair girder plate 22 not only from the inside of the stairs but also from the outside.
The work of mounting the stair treads 20 is facilitated.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a stair tread mounting bracket according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a method of constructing the staircase mounting plate from outside the stairs.

FIG. 3 is a partial side view showing a method of constructing the stair tread mounting bracket from outside the stairs.

FIG. 4 is a perspective view showing a method of constructing the staircase mounting plate from inside the stairs.

FIG. 5 is a partial side view showing a construction method of the stair tread mounting metal fitting from the inside of the stairs.

FIG. 6 is a partial side view showing a construction method of a conventional stair treadboard mounting bracket.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Stair tread mounting bracket, 11 ... 1st receiving surface, 12 ... 2nd receiving surface, 13 ... Connecting surface, 14, 16, 17 ... Through-hole, 1
5 ... Tapered groove.

Claims (1)

[Claims] 1. A first receiving surface in contact with a left end surface or a right end surface of a stair tread, a second receiving surface in contact with a back surface of an upper end portion of the stair girder, a lower end of the first receiving surface, and an upper end of a second receiving surface. A connection surface for connecting the first and second portions, a first receiving surface, a second receiving surface, and a connection hole communicating with the inside and outside of each of the connecting surfaces; A stair stepping plate attachment, wherein a tapered groove for guiding a nail to a through hole is formed.