JPS588814Y2 - Tread mounting parts for stair assembly - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a part for attaching a treadboard for stair assembly, which is suitable for attaching a treadboard to a crossbeam when assembling a staircase.

Conventionally, when assembling stairs, although there are slight differences depending on the type of stairs, it is done by providing notches for the tread supports in the sill girder, or notches in both the sill girders and treads so that they interlock with each other. It was getting worse.

Stairs serve as a passageway connecting the upper and lower parts of a house, so they must be designed to be safe and comfortable.

The Building Standards Act also takes this point into account, and the treads of stairs in residential buildings are
The minimum height for risers is 5 cm and the height for risers is 23 cm or less.

The distance from the first floor to the second floor of a normal house is 2m80cm
Since there is a distance of 3 m from n, if we take risers 20 to 23 crn, we will have to divide 13 to 14 steps evenly 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 sasara 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 flat girder so that the receiving groove is horizontal to the floor surface, attach a tread to the flat girder, and then make fine adjustments using a wedge, or
When assembling the L-shaped metal fittings using metal fittings, the method used was to level out the L-shaped metal fittings at each level and then secure them in place, which required immeasurable technical difficulties.

In particular, due to the recent decline in the technical level of construction workers, there has been a desire in the industry to develop a simpler and more reliable method of assembling stairs.

The present invention aims to provide parts for attaching treads for stair assemblies that are devised so that adjustment of the attachment between the spanner girders and treads during stair assembling can be done easily and accurately.

The features of the parts for attaching treads for stair assembly according to the present invention are two U-shaped pieces 2, one short and one long, that sandwich the flat girder from above and below so that it is horizontal to the slope of the stair flat girder.
1 and this U-shaped upper and lower piece 2.2. The two pieces of the horizontal girder are mounted vertically between the legs of this U-shaped upper and lower piece 2.1 so as to fit on both sides of the horizontal girder. It consists of tread plate fixing pieces 5, 5' which are partially expanded both sides of the U-shaped lower piece 1, and the contact surface of the front inclined surface of the flat girder deep inside the U-shaped pieces 2, 1 has a rule. The tread plate mounting has angle adjustment pieces 4', 4 with angular notches 3', 3, and the flat girder mounting has nail holes 6, 8', 8' and tread fixing pieces 5, 5', respectively.
The tread mounting for stair assembly, which is shaped like a saddle and is characterized by having 6′ and 7,7′, is a part,
By attaching the parts to the tread plate for stair assembly at any position without making any cuts or notches in the sill girder, you can always attach the tread board at the same angle to the sill girder, and that angle is the same as that of the tread. Installation is done simply by cutting a certain amount of notches 3 and 3' that are regularly carved on the two short U-shaped pieces 1 and 2 at the length of the part where the part and the flat girder come into contact, and all the treads can be installed in one step. The advantage is that it can be installed quickly and with the same accuracy.

The present invention will be explained with reference to drawings which are examples. Fig. 1 shows a perspective view of parts for mounting the tread of the present invention, Fig. 2 shows a side view of the parts fixed to the tread for installing the tread on the support girder, and Fig. 3 shows a side view of the parts fixed. FIG. 2 is a perspective view showing a state in which a footboard is attached.

The two long and short U-shaped pieces 1 and 2 are fitted so as to straddle the flat girder 9 with the long piece 1 at the bottom and the short piece 2 at the top.

The U-shaped pieces 1, 2 are installed with regular notches 3, 3' in their deep inner parts, and the angle adjusting pieces 4, 4' are provided so that the angle adjusting pieces 4, 4' are in contact with the surface of the flat girder 9. As shown in the figure, the mounting angle of the footboard 10 can be determined.

For installation, it is common and easy to use if the line connecting the tips of the angle adjustment pieces 4, 4' is set at 45 degrees to the horizontal line.

If the slope of the stairs is greater than 45°, the angle adjustment piece 4' of the U-shaped piece 2 can be cut off from the 3' part.
0 installation allows the angle to be increased.

Conversely, when the slope of the stairs is smaller than 45°, the angle can be adjusted by cutting off the angle adjustment piece 4 of the U-shaped piece 1.

Since the adjusting pieces 4, 4' are provided with regular increments 3.3', the amount to be cut can always be kept constant.

Numerals 8 and 8' are used to attach the parts of the present invention to the support girder 9, and nail holes 6 and 6' are drilled in several places.

For installation, the height h of the pieces 8, 8' should match the thickness of the footboard 10.

5.5' is the tread plate fixing piece, and the tread plate 10 is attached to pieces 8 and 8'.
Insert it between them and fix it with screws or screws through the rear nail holes 7 and 7'.

Note that the footboard fixing piece 5 may be provided only on one side of the U-shaped lower piece 1.

Also, the width a of the U-shaped pieces 1 and 2 is preferably set to piece 8.
, 8' is about 2 to 3 mm wider than the thickness b of the tread plate 10 and the width plate 9.
Even if there is a gap of ~2 mm, the width a of the U-shaped pieces 1 and 2
covers the gaps and makes them invisible from the surface, resulting in a beautiful finish.

Of course, other dimensions are also possible.

Suitable materials for the parts for mounting the tread of the present invention include metals such as aluminum and stainless steel, which have excellent strength, and synthetic resins such as nylon, polycarbonate, polyethylene, and polypropylene.

In this way, when the tread assembly for stair assemblies of the present invention uses parts, to mount one tread, cut out the angle adjustment piece so that the part is level, and then all treads can be installed by adjusting the amount of cut in the parts. By simply making them the same, all tread mounting parts will be attached to the flat girder parallel to the floor surface, making it easy to determine the horizontal level of the tread, which is the most important technical point when assembling stairs.

To install the treads for stair assembly according to the present invention, after attaching the parts to the required positions on the sill girder, insert the treads from the front.
After that, you can easily install the stair treads in the correct position by simply fixing them with screws or nails.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the parts of the stair assembly tread mounting according to the present invention. Figure 2 is a side view of the tread plate installation when the parts are attached to the sasara girder. FIG. 3 is a perspective view showing a state in which the tread plate is assembled using parts for mounting the tread plate. 1...Long U-shaped piece, 2...Short U-shaped piece 3゜3'...Regular notches, 4,4'
・・・・・・Treadboard mounting is angle adjustment piece, 5,5′...
...Tread plate fixing piece, 6,6', 7.7'...Nail hole, 8°8'...Sasara girder installation is one piece.

Claims (1)

[Scope of utility model registration request] so that it is horizontal to the slope of the stairs'
The two short and long U-shaped pieces 2 and 1 sandwich the flat girder from above and below, and the U-shaped upper and lower pieces 2 and 1 are fitted between both sides of the flat girder. The two vertically mounted pieces of the sasara girder are attached to the pieces 8 and 8', and the tread plate fixing pieces 5 and 5', which are partially expanded both sides of the U-shaped lower piece 1.
The tread plate mounting has regular notches 3', 3 on the contact surface of the front inclined surface of the flattened girder deep inside the U-shaped pieces 2, 1, and has angle adjustment pieces 4', 4. , the saddle girder mounting is shaped like a saddle, characterized in that nail holes 6, 6' and 7.7' are provided in the pieces 8 and 8' and the tread plate fixing pieces 5 and 5', respectively. The tread mounting for stair assembly is a part.