JPH055961U - Indoor stair treads - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a tread for indoor stairs in which the stairs can be manufactured and finished easily and quickly by filling the tread with concrete before assembling the tread to the sasara girder. . [Composition] A tread plate which is discontinuously assembled to a girder to form an indoor staircase, and the tread plate is welded to the metal box body 1 at the riser 6 and both sides of the girder girder side of the box body are joined. An indoor stair tread in which at least two nuts 8 are fixed to the inner sides of the plates 4 and 5, respectively, and the concrete is filled in the box body.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

  The present invention relates to an indoor stair tread that is discontinuously assembled to a sasara girder. is there.

[0002]

[Prior art]

  Conventionally, as a staircase for indoor use, a continuous tread is supported on a sasara girder with long bolts. Assembled type or continuous welding type in which the tread, the sasara girder, and the mutual treads are welded The thing was used normally.

[0003]

[Problems to be solved by the device]

  However, both the continuous assembling type and the continuous welding type are not Due to the structure and welding points, the tread surface must be assembled after the tread plate is assembled to the sasara girder. The concrete cannot be filled, and the concrete can be placed after field installation. Without it I couldn't do it. Therefore, when it is excessive to finish the production of the stairs It took time and the work was troublesome.

[0004]   The present invention has been made in view of these problems of the conventional technology. , Its purpose is to make sure that the tread is concrete before assembling the tread to the sasara girder. Indoor stairs that can be completed easily and quickly by filling with stairs It is intended to provide a footboard.

[0005]

[Means for Solving the Problems]

  In order to achieve the above-mentioned object, the tread for indoor stairs according to the present invention includes Weld the rising part of the riser to the metal box and insert it inside the side plates of the girder on the side of the girder. With at least two nuts fixed, fill the box with concrete It is characterized by being present.

[0006]   Further, in claim 2, a curved surface is formed between the nosing and the box bottom plate. It is the one.

[0007]

[Action]

  A nut is embedded in the box body where the riser riser is welded, Since the tread filled with the feet to form the tread is manufactured in advance in a factory or the like, It became possible to make and stock a large number of treads, and it was formed into a sasara girder. Passing bolts through the bolt insertion holes and tightening the nuts makes it easy to create indoor stairs ， Easily completed.

[0008]

【Example】

  An embodiment of the present invention will be described with reference to FIGS.   In the figure, reference numeral 1 is a metal box body, and the box body 1 has a nose 2 formed on the top thereof. The front plate 3 and the side plates 4, 5 facing the sasara girder (not shown) and the lower part of the riser rising part 6 It is constituted by the rear plate 7.

[0009]   Then, the riser rising portion 6 uses a rectangular pipe to connect the rear plate 7 and the side plates 4, 5 to each other. It is formed by welding.

[0010]   In the box body 1, in the vicinity of the side plates 4 and 5, long nuts 8 are attached to the side plates 4 and 5, respectively. Two of them are welded to the bottom plate 9 toward 5.

[0011]   Maintaining this box 1 in a horizontal state, liquid concrete (self-leveling) 1 When 0 is filled up to the level of nosing 2 and it is dried, the concrete 10 A tread 11 is formed by the upper surface. In this way, treads are often used in factories. Can be produced in quantity.

[0012]   And when manufacturing indoor stairs, place sasara girders on both sides. Pass the bolt through the bolt insertion hole formed in the girder and insert the bolt into the nut inside the box body 1. All you have to do is to tighten.

[0013]   In the embodiment shown in FIG. 3, the rear plate of the box body 1 is omitted and the square pipe is welded to the bottom plate 9. The riser 6 is formed by the above, and FIG. The rising portion 6 is formed in a dome shape, and FIG. 5 is formed in a C shape. .

[0014]   In addition, in the embodiment of FIG. 6, a semi-circular curved plate is added to the front surface of the front plate 3 to form the nosing 2 A curved surface 12 is formed between the box bottom plate 9 and the box bottom plate 9, and FIG. A member is added to form a curved surface 13 between the nose 2 and the box bottom plate 9. Reference numeral 8 denotes the front plate 3 itself having a curved surface 14.

[0015]   In addition, the shape of the riser rising portion 6 and the nose 2 and the box bottom plate 9 in this tread plate The curved surface between is not limited to the above-exemplified one, and the combination thereof is not limited to the above. It is a reason.

[0016]

[Effect of device]

  The tread for indoor stairs according to the present invention is constructed such that the tread is kicked into a metal box body and the rising portion is melted. And fasten at least two nuts to the inside of both side plates of the girder side of the box. Since the inside of the box is filled with concrete in a fixed state, it is suitable for making stairs. Therefore, it is only necessary to fix the tread plate to the sasah girder with bolts. The production of is simple, easy and quick. In addition, the tread should be concrete in advance. Since it can be manufactured in a factory after being placed, it is suitable for mass production and stocked. It can be done at low cost.

[0017]   Also, when forming a curved surface between the nose and the bottom plate of the box, do not hook as a staircase. It is light and safe and can be used as a decoration.

[Brief description of drawings]

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

FIG. 2 is a perspective view of the tread plate before the concrete is stretched.

FIG. 3 is a sectional view of a tread for indoor stairs according to another embodiment of the present invention.

FIG. 4 is a cross-sectional view of a tread for indoor stairs according to another embodiment of the present invention.

FIG. 5 is a cross-sectional view of a tread for indoor stairs according to another embodiment of the present invention.

FIG. 6 is a cross-sectional view of a tread for indoor stairs according to still another embodiment of the present invention.

FIG. 7 is a sectional view of a tread for indoor stairs according to another embodiment of the present invention.

FIG. 8 is a sectional view of a tread for indoor stairs according to another embodiment of the present invention.

[Explanation of symbols]

1 metal box Two noses 4,5 side plate 6 kicking rising part 8 nuts 9 Bottom plate 10 concrete

Claims (2)

[Scope of utility model registration request] 1. A tread plate which is discontinuously assembled to a sasara girder to form an indoor staircase. The tread plate is welded to a metal box body at a riser portion, and the inside of the both side plates on the sasara girder side of the box body is welded. An indoor stair tread, characterized in that at least two nuts are fixed to each side, and the inside of the box is filled with concrete. 2. The tread for indoor stairs according to claim 1, wherein a curved surface is formed between the nosing and the box bottom plate.