JPS6220347B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of assembling wooden prefabricated stairs.

Conventionally, when assembling stairs, although there are slight differences depending on the type of stairs, it is common practice to provide a notch in the climbing girder to receive the tread, or to provide a notch in both the girder and the tread so that they interlock with each other. I was assembling it.

Because of its role, the staircase is a passageway that connects the upper and lower parts of the house, so it must have a safe and comfortable structure. The Building Standards Act also takes this into consideration, stipulating that the treads of residential stairs must be at least 15 cm and the risers must be no more than 23 cm.

The distance from the first floor to the second floor of a normal house is 2m.
It's about 80cm to 3m long, so if you set the riser to 20 to 23cm, you'll have to divide it evenly into 13 to 14 steps and install treads. Moreover, if the treads are not level, the house will be dangerous.

Therefore, the constructor divides the height of the stairs evenly into 13 to 14 steps, determines the position where the treads will be received on the climbing girder, calculates the slope of the stairs from the height of the stairs and the horizontal length used for the stairs, and installs the treads. Make a notch in the climbing girder so that the receiving groove is parallel to the floor surface, and after attaching the tread to the climbing girder, make fine adjustments with a wedge, or use an L-shaped mounting bracket. When assembling it, the L-shaped metal fittings at each level were leveled and then fixed, which required immeasurable technical difficulties. From this point of view, various prefabricated stairs have been proposed, but in all of them, the receiving plates are connected to each other or to the climbing girder using dowels, bolts, mounting hardware, etc., making it difficult to assemble. It takes time and effort,
Moreover, there were problems with the stability, reliability, and long-term durability of the stairs themselves after assembly.

The purpose of the present invention is to provide a method for assembling wooden stairs that eliminates the drawbacks of the conventional stairs, does not require any special mounting members during assembly, is safe, reliable, simple, and has semi-permanent durability. It's about doing.

The present invention will be explained in detail with reference to the drawings.

In the example shown in Fig. 1, on the upper surfaces of the two parallel girders 1, 1, there is a longitudinal fitting sliding part 4 with continuous grooves having unevenness on the side surface as shown in Fig. 2. It is cut into a predetermined length with the upper and lower ends set at a predetermined angle depending on the designed length and slope of the staircase. The receiving plate 2 has a shape as shown in an enlarged view in FIG. A protruding fitting sliding portion 5 is provided, the upper surface of which constitutes a footboard receiving portion 7. The fitting sliding portion 5 of the protrusion on the lower surface of the receiving plate 2 is
The receiving plate 2 can be slid by fitting into the fitting sliding portion 4 of the groove of the climbing girder 1, and the unevenness formed on the mating side surfaces of the girder 1 acts as a locking portion, so that the receiving plate 2 can be slid from the girder 1. It is constructed in such a way that it will not fall off. A plurality of receiving plates 2 are fitted and slid from the upper end of the climbing girder 1, and are brought into contact with each other one after another to be closely connected and fixed. As a result, in order to obtain a stable tread portion without using any special means of fixing the catch plate and the girder,
can be securely fixed. The outer surface shape of the receiving plate 2 is cut and formed into a constant shape, which is convenient for keeping the tread level when the tread plate is attached to the tread plate receiving part 7, and is convenient for assembly work. In the figure, 6a is a mounting piece. Opposing receiving plate 2,
The footboard 3 is horizontally mounted on the footboard receivers 7, 7 of the second footboard, and the mounting pieces 6a, 6 of the mounting means 6 as shown in FIG.
By engaging b with each other, the step plate is horizontally fixed on the receiving plate. Figure 3 shows the receiving plate 2.
This figure shows the state in which the footboard 3 is horizontally fixed by the mounting means 6.

As shown in FIG.
In some cases, the plywood plates 1-2 and 1-3 are constructed in a sandwich-like manner, and the grooved fitting sliding portions 4 are formed on the plywood plates 1-2 and 1-3, thereby making the whole structure stronger.
Further, as shown in the figure, when the receiving plate 2 is configured in a sandwich shape using the plywood 2-1 and the particle boards 2-2 and 2-3, the receiving plate 2 has a mounting means 6 such as a pin or a dowel for connecting it to the tread plate 3 at the center. The material plywood 2-1 is preferable because it can be held firmly.

The example shown in FIG. 6 is another embodiment of the fitting and sliding part explained in FIGS. A groove fitting sliding part 5 having a cross-sectional shape corresponding to the protruding fitting sliding part 4 of the climbing girder 1 is provided along one side of the climbing girder 2. Of course, the side surface of the fitting sliding portion is similarly formed with projections and depressions for locking.

As described above, in this invention, first, a pair of climbing girders 1, 1 are installed in parallel at a predetermined interval, and a plurality of receiving plates 2 are fitted and slid onto the climbing girders 1, 1. The assembly of the stairs is completed by attaching the treads 3 in close contact with each other and placing and fixing the treads 3 on the tread receiving parts 7, 7 of the opposing receiving plates 2, 2.

According to this invention, by simply preparing the climbing girder and the receiving plate, each of which has a mating sliding portion with an uneven side surface, the trouble of determining the horizontal level each time on site is eliminated, which is required using the conventional assembly method. Since the process can be significantly reduced compared to the previous method, work efficiency can be significantly improved. Furthermore, even after assembly, since the sides of the fitting portions are fitted into each other in a state where they bite into each other, the stairs will not loosen or shift, making it possible to obtain a safe and durable staircase.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing the steps for assembling the stairs according to the present invention, FIG. 2 is a sectional view taken along the line in FIG. 1, FIG. 3 is a sectional view taken along the line in FIG. A perspective view, Fig. 5 is a side view showing the relationship between the climbing girder and the receiving plate, Fig. 6 is another example explanatory view showing the relationship between the climbing girder and the receiving plate, and Fig. 7 is the tread plate and the receiving plate. It is an explanatory view of an example of the attachment means used for connection with. 1... Climbing girder, 1-2... Particle board,
1-2, 1-3... plywood, 2... receiving plate, 2-1...
... Plywood, 2-2, 2-3 ... Particle board, 3 ... Stepboard, 4 ... Fitting sliding part of climbing girder, 5 ...
...Fitting sliding part of receiving plate, 6...Mounting means, 6a, 6
b...Mounting piece, 7...Tread plate holder.

Claims (1)

[Claims] 1. A fitting slide in which two climbing girders 1 each having a fitting sliding part 4 with unevenness formed on the side surface in the longitudinal direction of the upper surface are arranged in parallel, and the lower surface is fitted into the fitting sliding part 4 of the climbing girder 1. A plurality of receiving plates 2 having a moving part 5 and a tread plate receiving part 7 on the upper surface
After fitting and sliding the lower surfaces of the fitting and sliding parts 4 of the climbing girders 1 and sequentially abutting and fixing them in succession, the tread plate receivers 7 of the receiving plates 2 facing each other in the two climbing girders 1 are fitted and slid. A method for assembling stairs characterized by horizontally mounting a tread 3 on top.