JPH0716821Y2 - Indoor stair treads - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an indoor stair tread that is continuously assembled to a sasara girder.

[0002]

2. Description of the Related Art A metal tread plate having a substantially L-shaped integrally formed kicking portion and tread receiving portion, which are continuously assembled to a girder to form a staircase, has a horizontal direction at an upper end portion of the rising portion. A stair tread for indoor stairs in which a checkerboard and a storage part for finishing material are formed on the lower end side of the riser, and two fixing nuts are arranged on the lower surface of the tread receiving part. Is known, for example, as shown in Japanese Utility Model Laid-Open No. 3-2124.

[0003]

By the way, in the above-mentioned prior art, there are two bolt fixing positions for one tread, and each tread has these fixing positions, so that it is necessary to make the positional relationship accurate with each other. There is a problem that the assembly is unstable due to the assembly by inserting and the apparatus becomes complicated, and noise is generated due to the use of the checker plate.

The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to mount each tread plate in the case of mounting the tread plate to the sasara girder.
It can be easily assembled by bolting at one place and welding at one place, and by using the mounting piece to place the next step plate, it is possible to connect the step plates easily and surely It is intended to provide a beautifully-looking indoor stair tread with less noise by using.

[0005]

In order to achieve the above object, an indoor stair tread according to the present invention has a hook-shaped hooking portion formed at an upper end portion of a kicking portion and a lower end side of the kicking portion. Is bulged and curved to form a welding margin / vibration damping steel plate and a storage portion for the finishing material, and further, the rear end of the tread receiving portion is inclined downward to form an inclined portion and a rising portion is formed from the end. A triangular mounting space is formed, a mounting piece is welded in the space, and a bolt from the sasara girder is fixed through the piece to attach the tread to the sasara girder. It is characterized in that it is located in the mounting space and that a damping steel plate and a finishing material are attached to the tread receiving portion.

[0006]

When the tread plate is assembled to the sasara girder, the tread plate is assembled from the upper part to the lower part. That is, when the upper step plate is stopped by bolts and welding to the sasara girder, the hooking part of the lower step plate is positioned in the upper mounting space, and then the nut fixed to the mounting piece is attached to the nut from the side of the sasara girder side. The bolt is inserted to stop the tread plate at a predetermined position, and the bulging and curved welding margin on the lower end side of the riser is welded to the sasara girder.

When the tread plate is assembled to the sasara girder in this manner, the damping steel plate and the finishing material are attached to the tread receiving portion. At this time, since the tip portions of the damping steel plate and the finishing material are accommodated in the bulging and curved welding margin and damping steel sheet and the finishing material accommodating portion on the lower end side of the riser, the welding margin portion is It does not appear on the surface.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described with reference to FIGS. In FIG. 1, reference numeral 1 denotes a riser, and the riser 1 has a hook-shaped hook 2 extending downward from the horizontal direction at the upper end thereof, and the lower end of the riser 1 is The welding margin portion 3 is formed and is bulged and curved so as to serve as a storage portion 6 for the damping steel plate 4 and the finishing material 5. The lower end of the welding margin portion 3 is continuous with the tread receiving portion 7, and the riser portion 1 and the tread receiving portion 7 are substantially L-shaped and integrated.

The rear end of the tread receiving portion 7 is inclined downward to form an inclined portion 8, and a rising portion 9 that rises upward from the end of the inclined portion 8 is formed continuously.

A mounting piece 10 is welded to a mounting space in a substantially triangular shape between the inclined portion 8 and the rising portion 9, and a nut 11 is welded to the mounting piece 10.

The tread receiving portion 7 has a damping steel plate 4
And a finishing material 5 such as a synthetic resin tile are laminated, and 12 is a non-slip material.

With the above-described structure, when the tread plate is assembled to both sasara girders (not shown) for manufacturing the stairs, the tread plate is assembled from the upper part to the lower part in order. That is, when the upper tread 13 (shown in phantom) is stopped by the bolt 14, the hook-shaped hooking portion 2 of the lower tread is placed on the upper mounting piece 15 and then fixed to the mounting piece 10. A bolt is inserted through the nut 11 from the side of the girder to stop the tread at a predetermined position. After that, the welding margin portion 3 is welded to the sasara girder.

When the tread plates are assembled to the sasara girder in this manner, the damping steel plate 4 is attached to the upper surface of the tread receiving portion 7, and the non-slip material 12 and the finishing material 5 are further attached to the upper surface thereof. At this time, the damping steel plate 4 and the finishing material 5
The leading end of the above is housed in the storage portion 6 of the bulging curved welding margin portion 3 and the damping steel plate 4 and the finishing material 5 on the lower end side of the riser portion 1. The welding margin 3 is hidden by the damping steel plate 4 and the finishing material 5 so that it does not appear on the surface, and the rising surface of the finishing material 5 is flush with the riser 1 to improve the appearance.

FIG. 2 shows another embodiment according to the present invention, which is substantially the same as the first embodiment except that a non-slip material is not used, and therefore the same reference numerals are given and the description thereof is omitted. To do. When the damping steel plate 4 is attached to the upper surface of the tread receiving portion 7 and the finishing material 5 is attached to the upper surface of the damping steel plate 4, the rear ends of the damping steel plate 4 and the finishing material 5 are connected to the next step plate. It is designed to be extended to a part of the kicking part of and stuck together.

[0015]

[Effects of the Invention] In the indoor stair tread according to the present invention, when assembling the treads to the sasara girder, each tread can be carried out by one bolting and one welding, so that the assembling is easy and accurate. it can. Further, the riser portion of the tread is supported at upper and lower two points by the upper bolting and the lower welding, and is supported at the two points by the front welding and the rear bolting of the tread receiving portion, which increases the strength in the gravity direction. To do. Further, since the mounting piece can be used for placing the tread at the next stage, connection of the tread is simple and reliable, and parts can be saved.

Further, by using the vibration damping steel plate, a staircase with very little noise can be obtained, and the welded portion can be a tread plate for indoor stairs which is concealed by the vibration damping steel plate and the finishing material and has a good appearance.

[Brief description of drawings]

FIG. 1 is a side sectional view of an indoor stair tread according to the present invention.

FIG. 2 is a side sectional view of another embodiment of the indoor stair tread according to the present invention.

[Explanation of symbols] 1 riser 2 hook 3 weld margin 4 damping steel plate 5 finish 6 storage 7 tread receiving 8 slope 9 rising 10 mounting piece

Claims (1)

[Scope of utility model registration request] 1. A metal tread having a substantially L-shaped integrally formed kicking part and tread receiving part, which are continuously assembled to a sasara girder to form a staircase, and has a hook shape at the upper end of the kicking part. the engaging portion is formed, also the lower end of the riser portion is bulged curved and the storage portion of the finish welding margin portion and vibration damping steel plate, is further inclined rear portion of the tread receiving portion downward To form a sloping part and form a rising part from its end to form a substantially triangular shape.
-Shaped mounting space is formed , a mounting piece is welded in the space, and a volatilized bolt from the sasara girder is inserted through the mounting piece.
And the tread on the sasara girder, and the hook shape of the next stage
Step board for indoor stairs the engaging portion, characterized in that laminated damping steel sheet and finish the Rutotomoni the tread receiving portion is positioned in the mounting space of.