JPH10245984A - Fastener for riser form of stair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the economy by integratedly providing a fastener provided with a nailing hole on an upper surface and one side surface of a rectangular plate- shaped main body, and providing a nailing hole at appropriate parts in the front surface of the main body to increase the frequency of diversion of a fastener for a riser form of a stair part. SOLUTION: Nailing holes 11, 12 are provided in an upper surface and one side surface of bent pieces 21, 22 to integrate a rectangular fastener main body 1. A swollen part 4 is integratedly and inwardly provided from one side end part of the main body 1 to its lower surface, and a nailing hole 3 is provided at appropriate parts of the swollen part 4. Bent piece 5, 6 are continuously provided to the bent pieces 21, 22 from the other side surface of the main body 1 to the bottom surface to reinforce the whole main body. A reinforcement A is assembled on a bottom mold P1 of a stair, and each end of a riser form P2 of each stage is fixed to a side wall mold and a sash wood at the stage end. A through batter B is stretched over the rise mold P2 in the center part and fixed thereto, and then, the bent piece 22 of one side surface of the main body 1 of a stop piece is abutted on the riser form P2 , and nailed from the front surface of the main body 1 relative to the side surface of the through batter B. During the diassembly, a bar is inserted in the swollen part 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stopper for a staircase recess formwork for assembling and supporting a staircase recess formwork in a construction work.

[0002]

2. Description of the Related Art Conventionally, in assembling and constructing a recessed formwork of a staircase, after a reinforcing bar inspection and correction of stairs are completed, assembling of a recessed formwork of each step and pressing down near the center thereof. And the formwork was nailed to the formwork by means of a plate such as a cut end of the formwork.

[0003]

In the above conventional method,
When assembling the staircase formwork, prepare a plate each time, cut it to an appropriate size, fit it into the formwork angle, fit it into the formwork, and take time and effort to nail it to the flap. Sometimes it is easy to be damaged, so it is necessary to rebuild it when constructing the next floor, and it takes a lot of effort,
It was uneconomical because it was difficult to convert.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and has as its object the construction of a recessed formwork on a stair portion, in particular, the prevention of entanglement near the center during concrete casting. Providing practical staircase recess formwork stoppers that can reliably and simply and easily replace the backing plate to prevent lifting, and are also economically advantageous by significantly increasing the number of diversions. Is to do.

[0005] As a means for this, a bent piece having a nail hole is integrally provided on the upper surface and one side face of a main body forming a plate shape such as a rectangular shape or a substantially triangular shape. It is characterized by having nail holes.

[0006] With the above structure, it is possible to save the time and effort of preparing and cutting the cut end of the conventional formwork each time.
It is extremely advantageous and economical in terms of diversion, and solves the above-mentioned conventional problems and achieves the above objects.

[0007]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view of a stopper for a staircase recess formwork according to an embodiment of the present invention, and FIG. The numeral 1 shown in the figure is a main body which forms a substantially rectangular shape, and a nail hole 1 is formed on the upper surface and one side surface, respectively.
A bent piece 21.22 provided with 1.12 is integrally provided.
Reference numeral 3 denotes a nail fixing hole provided at an appropriate position in front of the main body 1. Further, reference numeral 4 denotes a bulging portion integrally formed inward from one end to the lower surface in the vicinity of the nail hole 3 provided on the front of the main body 1. 5.6 extends from the other side surface to the bottom surface of the main body 1 and the bent piece 21.2.
2 shows a bent piece provided continuously to improve the reinforcing performance of the entire main body.

A method for using the stopper for a staircase recess formwork according to an embodiment of the present invention will be described with reference to FIG. After assembling the reinforcing bars A on the bottom formwork P ₁ of the stair portion, a riser mold P ₂ of each stage, to fix the both ends桟木sidewall mold and its stage ends. After further by bridging the through butter B on the riser mold P ₂ is fixed in the vicinity of the center, Bata B through shed bent piece 2 on one side surface of the body 1 of the stopper to the riser mold P ₂ Nail holes 3 from the front of the main body 1
And fix it with nails.

[0009] riser mold P ₂ of the stair portion, the left, by construction disposed symmetrically stop alternately and in the right, left one of fasteners through the through flap B, right It can be stopped easily and reliably.

FIG. 4 shows another embodiment of a stopper for a staircase recess formwork according to the present invention, in which a bent piece 21.22 is provided integrally from the upper surface of the substantially triangular main body 1 to one side surface. On the other hand, an oblique portion formed continuously from the upper surface to one side surface is provided integrally with a bulging portion 4 having an open end. 24
Indicates a nail hole provided in the bulging portion 4. According to this embodiment, by forming it symmetrically, it can be constructed by arranging it on the left and right sides through the through-flap B and applying it to the recessed formwork, and there is an effect that one product can be shared. When the length L (see FIG. 3) of the upper surface of the main body 1 is designed to be appropriately long, it can be constructed so as to protrude from the upper surface of the through flap B and to be protruded from the upper surface of the through flap B. It is possible to use the upper surface of this main body as a step during construction.

When dismantling after concrete casting and curing, disassembling can be performed simply and easily by inserting a bar or the like into a bulging portion provided on the front side of the main body 1. Moreover, nailing hole 12 of the bent piece 22 which is provided on one side of the main body 1 in the above embodiment, the size of the riser mold P _2, particularly when a relatively large length, the riser type When reinforcing the upper and lower sides of the frame with the reinforcing pier, it is possible to easily support and fix it by nailing.

[0012]

As described above in detail, according to the staircase recess formwork stopper of the present invention, a plate is prepared and cut each time the staircase formwork is constructed as in the prior art. There is no need to do it, and there is little breakage during disassembly.Since simple work, it has the effect of securely supporting and fixing the indentation formwork, the number of diversions is greatly increased, and construction is economically advantageous It is possible to obtain a practically useful stopper for a staircase recess formwork, for example.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of a stopper for a staircase recess formwork according to the present invention.

FIG. 2 is a vertical cross-sectional view of a part of the above center.

FIG. 3 is a cross-sectional view showing an example of a use state of the stopper according to the present invention.

FIG. 4 is a perspective view showing another embodiment of the stopper according to the present invention.

[Explanation of symbols]

1 mainly 11.12 nailing hole 21.22 folding piece 3 nailing hole 4 bulging portion P ₁ stepped portion of the bottom mold P ₂ riser mold B through bata

Claims (1)

[Claims] 1. A body having a plate-like shape such as a rectangular shape or a substantially triangular shape, integrally provided with bent pieces provided with nail holes on an upper surface and one side surface thereof, and a nail in a proper position in front of the body. A stopper for a staircase recess formwork, wherein a stopper is provided.