JPH0350851B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention relates to a round staircase that is used when assembling a round staircase using a plurality of round stair units or a round stair unit and a straight stair unit. Regarding stair units.

(Prior art) A circular staircase unit is, for example,
It is known as described in Japanese Patent No. 37649.
In this example, the round staircase unit is square shaped.

(Problems to be Solved by the Invention) However, the conventional round staircase units do not take into account the presence of walls, and further improvements are required to apply them to actual round stairs. The details will be explained below.

Houses are designed using predetermined standard dimensions (modules) as units in order to facilitate design and standardize each component. For example, the length from wall to wall in a room is an integral multiple of the module. Normally, a staircase is surrounded by a wall or an imaginary extension of this wall, so the above-mentioned staircase unit must be housed within this wall, but the above-mentioned round staircase unit is not designed to do this. I wasn't there.

(Means for Solving the Problems) The present invention has been made to solve the above-mentioned problems, and its gist is that a plurality of round stair units or a round stair unit and a straight stair unit are combined. Therefore, in a round staircase unit used when assembling a round staircase, the planar shape is a rectangle, and the standard length between two opposing sides (however, this standard length does not include the overlap between adjacent stair units). (hereinafter the same shall apply) is approximately an integral multiple of the module in the house design, and the reference length between the other two opposing sides is the length obtained by subtracting the wall thickness from an integral multiple of the above module. This is a round staircase unit that is characterized by being almost the same as the above.

(Function) A circular staircase is assembled by combining a plurality of circular staircase units, or by combining a circular staircase unit and a straight staircase unit and installing them so that they fit within a wall.

(Example) An example of the present invention will be described below with reference to FIG. Figure 1 shows a winding staircase ascending in a counterclockwise direction. This circular staircase is composed of two circular staircase units 1, 1 and two straight staircase units 3, 4, and is designed to change direction by 180 degrees when going up and down.

The round staircase is surrounded by a wall or a virtual extension of a wall (hereinafter simply referred to as wall). The distance D between the centers of the left and right walls 101, 102 and the center wall 103 is an integral multiple of the module, for example, three times. Further, the distance D between the center of the wall 104 connecting the left and right walls 101 and 102 and the center of the pillar 200 arranged at the end of the central wall 103 is also three times the module. The module is, for example, 30 cm.

The left and right circular staircase units 1, 1 are designed to change direction by 90 degrees when going up and down, respectively.
They have the same shape, have a rectangular planar shape, and 3
It is formed in steps. The reference length La between the two opposing sides of these circular staircase units 1 is approximately three times the length of the module, and approximately equal to the distance D between the wall centers. In addition, the reference length Lb between the other two opposing sides is
Wall thickness T from 3 times the module (distance D between wall centers)
It is almost equal to the length after subtracting . However, the above reference length means the length excluding the overlap between adjacent stair units. The details will be described later.

The above-mentioned straight staircase unit 3 is installed at the top of the round staircase, and consists of, for example, six steps.The standard length Lc between two opposing sides is approximately four times that of the module, and other The reference length Ld between the two opposing sides is approximately equal to the length obtained by subtracting the wall thickness T from the distance D between the wall centers.

In addition, the straight staircase unit 4 is placed at the entrance of the round staircase, and is used for height adjustment when the ceiling height is higher than usual. The reference length Lf between the two opposing sides is approximately equal to the distance D between the wall centers minus the wall thickness T.

The installation of the stair units 1, 1, 3, and 4 will be described in detail. The two round staircase units 1, 1 are installed with their directions changed by 90° from each other. As a result, the total length La+Lb of both stair units 1, 1 becomes the length obtained by subtracting the wall thickness T from twice the distance D between the wall centers, so that they can be accommodated between the left and right walls 101, 102. In addition, since the standard length Lb between the two opposing sides of the left circular staircase unit 1 is the length obtained by subtracting the wall thickness T from the distance D between the wall centers, it is necessary to fit it between the wall 104 and the pillar 200. I can do it.
In addition, since the standard length Lb between the two opposing sides of the right circular staircase unit 1 is the length obtained by subtracting the wall thickness T from the distance D between the wall centers, the wall 102 and the column 2
It can be placed between 0 and 0. Moreover, since the ends of one side of each circular staircase unit 1 face different side surfaces of the pillar 200, connection to the pillar 200 is possible.

The straight staircase unit 3 is installed between the walls 101 and 103. At this time, since the standard length Ld of the straight staircase unit 3 is the length obtained by subtracting the wall thickness T from the distance D between the centers of the walls 101 and 103, it can be accommodated between these walls 101 and 103. Also, the end of one side of this straight staircase unit 3 is
It can be connected along the side surface of the pillar 200. Furthermore, since the reference length Lc between the two sides of the straight staircase unit 3 is an integral multiple of the module, a supporting member (not shown) arranged according to the module at the exit of the round staircase is attached to the straight staircase unit 3. One side of the stair unit 3 can be connected.

The straight staircase unit 4 is placed below and supports the right-hand circular staircase unit 1, and is connected to the staircase unit 4 by a portion protruding from the circular staircase unit 1.
Configure the steps. In this straight staircase unit 4, the reference length Lf between the two opposing sides is the length obtained by subtracting the wall thickness T from the distance D between the wall centers.
It can be placed between 2,103.

Next, other aspects of the present invention will be explained with reference to FIGS. 2 to 4. In the following embodiments, the stair units corresponding to those in FIG. 1 are designated by the same numbers in the figures, and their explanations will be omitted. In addition, the reference numeral 100 is attached to all walls.

The round staircase in Figure 2 is designed to change direction by 90 degrees when going up or down. In this case, one round staircase unit and two straight staircase units 3,
5 is used. Note that the straight staircase unit 5 serves as an entrance, and the length Lg between its two opposing sides is not affected by the wall 100;
For example, it is configured in four stages, which is not an integral multiple of modules. Further, the length Lh between the other two sides is influenced by the wall 100, and therefore is approximately equal to an integral multiple of the module, that is, the length obtained by subtracting the wall thickness T from the distance D between the wall centers.

The round staircase in Fig. 3, like the one in Fig. 1, is designed to change direction by 180 degrees when going up and down, and there is a straight staircase unit 3 between two round staircase units 1.
is installed.

The round staircase shown in Fig. 4 is designed to change direction by 360 degrees when going up or down, and is constructed by installing four round staircase units 1 with their directions changed by 90 degrees.

Furthermore, by combining an arbitrary number of circular staircase units 1 and straight staircase units, a wide variety of circular staircases can be assembled.

In addition, although all of the above-mentioned embodiments have shown winding stairs that ascend in a counterclockwise direction, the present invention can also be applied to winding stairs that ascend and ascend in a clockwise direction. The round stair unit used in this case is formed symmetrically with the round stair unit 1 described above.

Although a wide variety of round stairs can be assembled as described above, there are only two types of round staircase units, one for left-turning and one for clockwise-turning, and the manufacturing cost can be significantly reduced. Further, the number of types of straight staircase units can be reduced.

Next, the structure of the round staircase shown in FIG. 1 will be explained more specifically and in detail with reference to FIGS. 5 to 12.

The round staircase unit 1 has a base 10 made of iron plate as shown in FIG. This base 10 has an open rear surface and a lower surface, and has three vertical portions 11, 12, 13 with different angles, and three horizontal portions 1 connecting these vertical portions 11, 12, 13.
4, 15, 16, and two side plate parts 17, 18. Connecting piece portions 11a, 12a, 13a are provided at the inner ends of each vertical portion 11, 12, 13, respectively.
is formed. Each connecting piece 11a, 12a,
13a is a vertical angle member 2 having an L-shaped cross section.
Welded to 0. In addition, as shown in FIGS. 8 and 10, a bent portion 11b that is directly bent and extends horizontally is provided at the lower end of the vertical portion 11 of the base.
is formed.

As shown in FIGS. 8 and 10, the base 10
There are risers 2 in front of the vertical parts 11, 12, 13 of the
1 is attached, horizontal parts 14, 15, 1
6, a footboard 22 is attached. The footboard 22 has an extending portion 22a extending from the front surface of the riser board 21.

The straight staircase units 3 and 4 are also constructed by attaching risers 31 and 41 and treads 32 and 42 to iron plate bases 30 and 40, respectively, as shown in FIG.

The angle material 20 is used as a pillar 2 having a U-shaped cross section.
00, and one piece 20a is connected to one side of the column 200 with bolts 25 and nuts 26, thereby fixing the round staircase unit 1 to the column 200. As shown in FIG.
It is fixed to the adjacent side of 00.

The connection between the two circular staircase units 1 is the first
This is done as shown in Figure 0. Horizontal part 1 of the circular staircase unit 1 installed on the right side, that is, on the lower side
6 and the bent portion 11b formed in the vertical portion 11 of the left, ie, upper, circular staircase unit 1 are overlapped and connected by means such as spot welding or bolting.

In the above connected state, the lower circular staircase unit 1
The rear end edge of the tread 22 attached to the horizontal part 16 of
It hits the front of the riser board 21 attached to the.
Therefore, the rear end portion 16b of the horizontal portion 16 located on the rear side of the front surface of the riser board 21 becomes the overlap margin Wb. Further, the extension portion 22 of the tread 22 attached to the horizontal portion 14 of the upper circular staircase unit 1
a is the horizontal part 16 of the lower circular staircase unit 1;
Since it protrudes from the rear end edge of the footboard 22 attached to the tread plate 22, it becomes an overlapping allowance Wa when viewed from above. Note that the rear end portion 16b of the horizontal portion 16 of the upper circular staircase unit 1 is connected to the straight staircase unit 3 in the same manner as in FIG. 10, and forms an overlapping margin Wb. Further, the extension portion 22a of the tread 22 attached to the horizontal part 14 of the lower circular staircase unit 1 is connected to the tread 42 attached to the straight staircase unit 4.
Since it protrudes from the rear end edge, it becomes an overlap allowance Wa.

As shown in FIGS. 8 and 10, the standard length La of the above-mentioned circular staircase unit 1 is
It is the length obtained by subtracting the above-mentioned overlap allowance Wa from the actual length between the sides, and similarly, the reference length Lb is the length obtained by subtracting the above-mentioned overlap allowance Wb from the actual length between the other two opposing sides. It is. In other words, the standard length La is the length from the front side of the riser 21 to the side 1a on the wall side, and the standard length Lb is the length from the rear edge of the footboard 22 to the other side 1b on the wall side. It becomes the length.

Similarly, the standard length Lc of the straight staircase units 3 and 4 is determined. In FIG. 7, Wc and Wc' are overlap margins.

As shown in FIG. 11, the pillar 200 has a wall 103.
The ends of are connected. The wall 103 is composed of a frame member 105 having a U-shaped cross section and assembled into a rectangular shape, and wall members 106 attached to both sides of the frame member 105. The distance between the outer surfaces of both wall materials 106 is the wall thickness T.

Stair units 1, 1, 3, 4 as described above.
After the installation of the wall 103 is completed, the fifth
Finishing is performed as shown in FIGS. That is, although gaps are formed between each stair unit 1, 1, 3, 4 and the pillar 200,
This gap is closed by three covering materials 51, 52, 53. In addition, walls 101, 102, 10
The gaps between the stair units 1, 1, 3, and 4 are closed by baseboards 55.

In addition, the standard length of each stair unit 1, 3, 4
Lb, Ld, and Lf are not strictly equal to the length obtained by subtracting the wall thickness T from the distance D between wall centers, but are the lengths obtained by further subtracting the above-mentioned gap from this length. However, in this specification, this gap difference is ignored, and the reference lengths Lb, Ld, and Lf are assumed to be approximately equal to the length obtained by subtracting the wall thickness T from the distance D between the wall thicknesses.

(Effects of the Invention) As explained above, the reference length between two opposing sides of the round staircase unit is approximately an integral multiple of the module, and the reference length between the other two opposing sides is an integral multiple of the module. Since it is approximately equal to the length obtained by subtracting the wall thickness, it fits well between the walls.
Furthermore, many different types of round staircases can be assembled by using a small number of types of round staircase units or a combination of these and straight staircase units.

[Brief explanation of drawings]

Figures 1 to 4 are schematic plan views showing round stairs incorporating the round staircase unit of the present invention, and Figures 5 to 12 show the specific structure of the round stairs corresponding to Figure 1. Figure 5 is a side view of the round staircase, Figure 6 is a plan view of the round staircase, Figure 7 is an exploded plan view of each staircase unit, and Figure 8 is an enlarged plan view of the round staircase unit. Figure 9 is a perspective view of the base of the round staircase unit, and Figure 10 is a perspective view of the base of the round staircase unit.
Fig. 11 is a vertical cross-sectional view showing an enlarged connection part of the stairway unit for roundabouts;
The figure is a cross-sectional view showing the state after final finishing. 1... Round staircase unit, 3, 4, 5... Straight staircase unit, 100-104... Wall, D...
...Distance between wall centers, La, Lb...Reference length, T...
Wall thickness, Wa, Wb...overlapping allowance.

Claims (1)

[Claims] 1. In a round stair unit used when assembling a round stair by multiple round stair units or by a round stair unit and a straight stair unit, the planar shape is a quadrilateral and the space between two opposing sides is The standard length (however, this standard length refers to the length excluding the overlap between adjacent stair units; the same shall apply hereinafter) is approximately an integral multiple of the module in the house design, and other A round staircase unit characterized in that the standard length between two sides is approximately equal to the length obtained by subtracting the wall thickness from an integral multiple of the module.