JPH0334996Y2

JPH0334996Y2 -

Info

Publication number: JPH0334996Y2
Application number: JP5454485U
Authority: JP
Priority date: 1985-04-12
Filing date: 1985-04-12
Publication date: 1991-07-24
Also published as: JPS61170643U

Description

【考案の詳細な説明】（産業上の利用分野）この考案は工場生産された踏板をささら桁に固
定する装置に関するものであつて、プレキヤスト
コンクリートの階段部材を製造する分野及び建築
の分野で利用されるものである。[Detailed description of the invention] (Field of industrial application) This invention relates to a device for fixing factory-produced treads to stringers, and is useful in the field of manufacturing precast concrete stair members and in the field of architecture. It is something that is used.

（従来の技術）従来工場生産された踏板ささら桁に固定する場
合、縦方向に取付けられたボルトを介して締付固
定していた。(Prior Art) Conventionally, when fixing a tread plate to a factory-produced stringer, it was tightened and fixed via bolts installed in the vertical direction.

（考案が解決すべき問題点）前記従来の技術によれば、ボルトによる締付力
にも限度があり、また横方向の力に対する規制は
全くなし得なかつた。(Problems to be Solved by the Invention) According to the above-mentioned conventional technology, there is a limit to the tightening force of the bolt, and it is impossible to regulate the lateral force at all.

（問題点を解決する為の手段）この考案の階段の踏板固定装置は、ささら桁１
の側壁所定位置に長ナツト２を埋設し、踏板３の
両側下部に状の連結板４を固定し、該連結板４
を貫通させたボルト５を前記長ナツト２に螺合さ
せ、連結板４をささら桁１に締付固定して構成し
てある。(Means for solving the problem) The stair tread fixing device of this invention has a stringer girder 1.
A long nut 2 is embedded in a predetermined position on the side wall of the tread plate 3, and a shaped connecting plate 4 is fixed to the bottom of both sides of the tread plate 3.
A bolt 5 passed through is screwed into the long nut 2, and the connecting plate 4 is tightened and fixed to the stringer 1.

前記ささら桁の側面には受板６を添設固着して
おけば強度の向上を図ることができる。また前記
連結板を踏板に固定する構造としては、実施例に
示す構造の他、連結板に複数の脚を設けておき、
該脚を踏板へ埋設固着することもできる。 If a receiving plate 6 is attached and fixed to the side surface of the stringer, the strength can be improved. Further, as a structure for fixing the connecting plate to the treadle, in addition to the structure shown in the embodiment, a plurality of legs are provided on the connecting plate,
The legs can also be embedded and fixed to the footboard.

（考案の作用）この考案において踏板は横向に取付けられたボ
ルトを介してささら桁に固定されているので、こ
の装置によれば横方向の力に対しても大きな耐性
が得られる。また連結板は踏板固定時における位
置合わせの案内としての働きも有する。(Function of the invention) In this invention, the treadle is fixed to the stringer via bolts installed laterally, so this device provides great resistance to lateral forces. The connecting plate also functions as a guide for positioning when the treadle is fixed.

以下この考案の実施例を図面に基いて説明す
る。 Examples of this invention will be described below with reference to the drawings.

（実施例） RC構造のささら桁１の両側に金属製の受板６
が埋設してあり、該受板の内面にその透孔７に対
応させて長ナツト２が埋設してあり、該長ナツト
２の一端は前記受板６に溶着してあると共に、前
記長ナツト２の他端には補強板８が溶着してあ
り、該補強板８の周縁部８ａは長ナツト２の外側
へ鍔状に突出している。(Example) Metal receiving plates 6 on both sides of stringer 1 with RC structure
is buried therein, and a long nut 2 is buried in the inner surface of the receiving plate in correspondence with the through hole 7, one end of the long nut 2 is welded to the receiving plate 6, and the long nut 2 is A reinforcing plate 8 is welded to the other end of the long nut 2, and a peripheral edge 8a of the reinforcing plate 8 protrudes outward from the long nut 2 in the shape of a brim.

前記ささら桁１上の踏板３の両側下部には長ナ
ツト９が一端を開口させて埋設してあり、長ナツ
ト９の他端には補強板１０がボルト１１で固定し
てあり、該補強板１０の周縁部１０ａは長ナツト
９の外側へ鍔状に突出している。前記踏板３の下
面には状の連結板４が、前記長ナツト９に螺合
するボルト１２によつて固定してある。 A long nut 9 is buried at the bottom of both sides of the footboard 3 on the stringer 1 with one end open, and a reinforcing plate 10 is fixed to the other end of the long nut 9 with a bolt 11. A peripheral edge portion 10a of the nut 10 projects outward from the long nut 9 in the shape of a flange. A shaped connecting plate 4 is fixed to the lower surface of the footboard 3 by a bolt 12 screwed into the long nut 9.

前記連結板４の垂直部には透孔１３が設けてあ
り、該透孔１３と前記受板６の透孔７とを貫通す
るボルト５を前記長ナツト２と螺合させて、前記
踏板３はささら桁１に固定してある。図中１４は
鋼材であつて、該鋼材に受板６は溶着してある。 A through hole 13 is provided in the vertical portion of the connecting plate 4, and a bolt 5 passing through the through hole 13 and the through hole 7 of the receiving plate 6 is screwed into the long nut 2, and the step plate 3 is screwed together with the long nut 2. It is fixed to stringer 1. In the figure, reference numeral 14 denotes a steel material, to which the receiving plate 6 is welded.

この実施例の装置を組み立てる場合、連結板４
は工場で取付けても、また現場で取付けてもよ
い。そしてこの実施例によれば、連結板４を踏板
３に埋設した長ナツト９にボルトによつて固定し
たので、連結板４の無い状態で踏板を運搬するこ
とができ、積み重ね可能となり、取扱い容易であ
る。また長ナツト９には補強板１０を固定したの
で、踏板３に上下方向の力がかかつた場合に補強
板１０の周縁部１０ａがコンクリートと強く掛止
し、長ナツト９が脱抜するおそれがない。尚、さ
さら桁１の長ナツト２に溶着した補強板８も横方
向の力に対して同様の作用を奏するのものである
が、溶着よりもボルト固定の方が強固である。 When assembling the device of this embodiment, the connecting plate 4
may be factory installed or field installed. According to this embodiment, the connecting plate 4 is fixed to the long nut 9 embedded in the tread plate 3 with bolts, so the tread plate can be transported without the connecting plate 4, and can be stacked, making it easy to handle. It is. In addition, since the reinforcing plate 10 is fixed to the long nut 9, when a vertical force is applied to the tread plate 3, the peripheral edge 10a of the reinforcing plate 10 will strongly engage the concrete, and there is a risk that the long nut 9 will fall out. There is no. The reinforcing plate 8 welded to the long nut 2 of the stringer 1 has a similar effect against lateral forces, but bolted fixation is stronger than welded fixation.

また前記受板６は弾性のある合成樹脂製として
受板６と連結板４との圧着を図ることもできる。 Further, the receiving plate 6 may be made of elastic synthetic resin so that the receiving plate 6 and the connecting plate 4 can be crimped together.

（考案の効果）この考案によれば、ささら桁に踏板を固定する
に際し、縦のボルトと横のボルトの双方を用いた
ので、上下・左右いずれの方向の力に対しても十
分な強度を得ることができる効果がある。(Effects of the invention) According to this invention, both vertical bolts and horizontal bolts are used when fixing the tread to the stringer, so it has sufficient strength against forces in both the vertical and horizontal directions. There are effects that can be obtained.

[Brief explanation of the drawing]

第１図はこの考案実施例の正面図、第２図は同
じく一部拡大正面図、第３図は同じく第２図のＡ
−Ａ断面図である。１……ささら桁、２……長ナツト、３……踏
板、４……連結板、５……ボルト、６……受板。 Fig. 1 is a front view of the embodiment of this invention, Fig. 2 is a partially enlarged front view, and Fig. 3 is the A of Fig. 2.
-A sectional view. 1... stringer, 2... long nut, 3... treadle, 4... connecting plate, 5... bolt, 6... receiving plate.

Claims

[Claims for Utility Model Registration] 1. A long nut is embedded in a predetermined portion of the side wall of the stringer, and connecting plates shaped like the shape are fixed to the bottom of both sides of the tread, and the connecting plates are secured by bolts screwed into the long nuts. A stair tread fixing device that is tightened and fixed to the stringer. 2. The stair tread fixing device as set forth in claim 1 of the utility model registration claim, in which the stringer has a receiving plate attached to the side surface. 3. The stair tread fixing device according to claim 1, wherein the connecting plate is fixed to the tread by tightening with a bolt that is screwed into a long nut embedded in the tread.