JPH10110511A - Spiral stair way - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the generation of vibration by disposing a cabane between the outer end of the corner part most separated from a newel post in a tread of a spiral stair way and a steel beam of an upper floor. SOLUTION: In a tread 8 of a spiral stair way part 3, a cabane 12 is disposed between the outer end of the corner part most separated from a newel 2 and a steel beam H of an upper floor F to form a a spiral stair way 1. That is, a flange 121 is provided on the lower end part of the cabane 12, further a flange 71 is provided on the side surface of a support frame 7 disposed on the back of a tread 8, and thee flanges 121, 71 are connected to each other. Accordingly, even if the load is applied to the vicinity of the corner part most separated from the newel 2 of the tread 8 of the spiral stair way, a part of the load can be supported by the steel beam H through the cabane 12, so that bending moment applied to the newel 2 of the spiral stair way 1 is relatively reduced. Accordingly, vibration of the spiral stair way can be prevented surely.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a turning staircase.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG.
A parent pillar 2 standing between the lower floor F ₁ and the upper floor F ₂
And a turning staircase 3 connected to the approximate center of the main pillar 2
When, with the upper end is connected to a steel beam H of the upper floor F _2, the upper stair portion 4 on the lower end is connected to an upper end of the stepped portion 3 around the straight line, the lower end is connected to the lower floor F ₁ And a lower staircase 5 on a straight line whose upper end is connected to the lower end of the staircase 3. The upper staircase 4 and the lower staircase 5 are parallel to each other and one of the left and right sides of the main pillar 2. It is arranged so that an edge may follow. And the rotating staircase 3
One end of a horizontal frame 6 is radially fixed to the main pillar 2 at intervals in the height direction, and the other end of the horizontal frame 6 is connected by a continuous support frame 7 and is substantially perpendicular to the horizontal frame 6 or the support frame 7. One side of the isosceles triangular tread 8 is fixed and formed. The upper and lower steps 4 and 5 are formed by fixing a tread plate 10 to a pair of girders 9.

The upper end of the main pillar 2 is connected to the connection frame 11.
It is connected to the steel beam H of the upper floor F ₂ through. Although not shown in detail, the outer periphery of the rotating staircase 1 is partitioned by an inner wall board such as a gypsum board.

In order to mount the turning staircase 1, each horizontal frame 6 of the turning staircase 2 is fixed to a predetermined position of the main pillar 2, and the main pillar 2 and the turning staircase 3 are integrated in advance. Then, after connecting one end of the connection frame 11 to the upper end of the main pillar 2 in which the turning staircase 3 is integrated, the lower end of the main pillar 2 is connected to the lower floor F
With installing the _1, connecting the other end of the connection frame 11 to the steel beam H of the upper floor F _2. Then, while connecting the upper end of the upper stepped portion 4 to the steel beam H of the upper floor F _2, for connecting the lower end to the upper end around stepped portion 3. Similarly, while connecting the lower end of the lower stepped portion 5 on the lower floor F _1, it is intended for connecting the upper end to the lower end around stepped portion 3.

[0005]

However, in the above-mentioned turning staircase 1, one end of the horizontal frame 6 of the turning staircase portion 3 is connected to the main pillar 2, and the upper end and the lower end of the turning staircase 3 are respectively upward. Since it is connected to the lower end of the staircase 4 and the upper end of the lower staircase 5, the load is applied to the vicinity of the corner farthest away from the main pole 2 (see the hatched portion in FIG. 3) on the tread plate 8 of the turning staircase 3. When 作用 acts, the bending stairs 1 may swing due to the bending moment caused by the load, and as a result, there is a problem that a sense of anxiety is caused.

SUMMARY OF THE INVENTION The present invention has been made in view of such a problem, and provides a method of forming a rotating staircase which does not cause shaking even when a load is applied in the vicinity of a corner of a tread of a rotating staircase. To provide.

[0007]

According to the present invention, there is provided a main pillar standing between an upper floor and a lower floor, and a horizontal frame having one end radially fixed to the main pillar at an interval in a height direction. The other end is connected by a continuous support frame, and a rotating staircase part in which one side of a substantially triangular tread is fixed to the horizontal frame or the support frame, and the tread is fixed to a pair of girders and the upper end is a steel frame on the upper floor. A straight upper staircase with a lower end connected to the upper end of the staircase, and a treadboard fixed to a pair of girders, with the lower end on the lower floor and the upper end turned on the lower end of the staircase A linear lower staircase connected respectively to
And a suspension pole is disposed between the outer end of the corner of the tread of the turning staircase that is farthest from the main pole and the steel beam on the upper floor.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

The same members as those of the conventional example shown in FIG. 2 are denoted by the same reference numerals, and detailed description thereof is omitted because they are duplicated.

FIGS. 1 and 2 show a turning staircase 1 of the present invention.
Has been shown, this rotation staircase 1, in step board 8 around stepped portion 3, and the corner outer end to farthest from the parent column 2, the Tsuhashira 12 between the steel beam H of the upper floor F ₂ It is arranged and configured. That is, a flange 121 is provided at the lower end of the suspension pole 12, and a flange 71 is also provided on the side surface of the support frame 7 disposed on the back surface of the tread plate 8, and these flanges 121 and 71 are connected to each other. . For this reason, the suspension pillar 12 can be arranged on the back surface side of the inner wall board B that partitions the outer periphery of the rotating staircase 1.

Therefore, even when a load acts on the tread plate 8 of the turning staircase 3 near the corner most distant from the master pillar 2, a part of the load is transmitted through the suspension pillar 12 to the steel beam. H, and as a result, the rotating stairs 1
Since the bending moment acting on the main pillar 2 becomes relatively small, the swinging phenomenon of the rotating staircase 1 can be surely suppressed.

In the embodiment described above, the tread plate 8 of the turning staircase 3 is formed into a substantially right-angled isosceles triangular shape.
Although illustrated with stages, more stages may be employed to reduce lifting. In this case, a rectangular shape formed by the lower end portion of the upper staircase portion 4 and the upper end portion of the lower staircase portion 5 as viewed from above is used instead of the substantially right-angled isosceles triangular tread plate 8 with the main pillar 2 as the center. A substantially triangular tread, including a right triangle formed by dividing the number of treads, may be employed.

[0013]

As described above, according to the present invention, the main pillar erected between the upper floor and the lower floor, and the horizontal pillar having one end radially fixed to the main pillar with an interval in the height direction. The other end of the frame is connected by a continuous support frame, and a rotating staircase in which one side of a substantially triangular tread is fixed to the horizontal frame or the support frame, and the tread is fixed to a pair of girders and the upper end is the upper floor. A straight upper staircase whose lower end is connected to the upper end of the staircase, a treadboard is fixed to a pair of girders, the lower end is on the lower floor, and the upper end is A linear lower staircase connected to the lower end, and a suspension pole is arranged between the outermost corner of the tread of the turning staircase, which is farthest from the main pillar, and the steel beam on the upper floor. In this case, a load is applied near the corner of the tread of the turning staircase. It can partially load becomes possible to support the steel beam via the Tsuhashira and to reliably prevent the shaking around stairs.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a turning staircase according to the present invention.

FIG. 2 is a view taken in the direction of arrow A in FIG. 1;

FIG. 3 is an exploded perspective view of a conventional rotating staircase.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS ₁ Turning stairs 2 Main pillar 3 Turning stairs 4 Upper stairs 5 Lower stairs 6 Horizontal frame 7 Support frame 8 Treads 9 Digits 10 Treads 12 Suspension pole H Steel beam F ₁ Lower floor F ₂ Upper floor

Claims (1)

[Claims] 1. A main pillar erected between an upper floor and a lower floor,
The other end of the horizontal frame, one end of which is radially fixed to this master pillar at intervals in the height direction, is connected with a continuous support frame, and one side of a substantially triangular tread is fixed to the horizontal frame or the support frame. A pair of girders and a straight upper staircase with the upper end fixed to a steel beam on the upper floor and the lower end connected to the upper end of the rotating staircase, respectively. And the lower end is on the lower floor, and the upper end is a linear lower staircase connected to the lower end of the turning staircase, respectively. A turning staircase characterized in that a suspension pole is disposed between an outer end of a corner to be formed and a steel beam on an upper floor.