JPH0555665B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <<Industrial Application Field>> The present invention relates to a dome-shaped roof structure, and more particularly to a dome-shaped roof structure that can be partially opened and closed depending on the weather.

<<Prior Art and Problems>> As is well known, structures for athletic events such as baseball stadiums and track and field stadiums do not have roofs.

This is intended to allow athletic competitions to be held in as natural a environment as possible, but if it rains or it rains during a competition, the competition must be suspended or canceled.

Therefore, all-weather stadiums have recently been proposed, and for example, air membrane structures are attracting attention.

However, the air membrane structure has the following problems.

In other words, an air membrane structure consists of a roof made of a membrane material made of synthetic resin, etc., and pressurized air that is slightly higher than atmospheric pressure is sealed inside. In order to prevent leakage, the entrance/exit structure becomes complicated.

In addition, not only will it be difficult to provide lighting and ventilation inside the venue, but the purpose of the competition will be lost if the competition is held or watched in a natural environment.

This invention was made in view of the above-mentioned conventional problems, and allows athletics to be held in a natural environment by partially opening and closing the roof depending on the weather, allowing natural lighting and ventilation on sunny days. To provide a dome-shaped roof structure which can be opened and closed even in rainy weather and can be opened and closed easily.

<<Means for Solving the Problems>> In order to achieve the above object, the present invention provides a dome-shaped fixed roof 16 whose peripheral edge is fixed to an upright outer wall 10, and a substantially central portion of the fixed roof 16. an opening 18 formed in the opening 18; and a plurality of beam members 22 extending radially from the center of the opening 18 and installed within the opening 18.
and an arc-shaped guide member 26 installed between the fixed roof 16 and the beam 22 with the central axis 24 at the point where the beam 22 reaches the opening 18; It consists of a substantially triangular movable roof 28 rotatably attached at one vertex, and the movable roof 28
are movable roofs 2 that are rotatably moved along the guide member 26 to freely open and close the opening 18, and are adjacent to each other and have mutually overlapping trajectories during opening and closing operations.
8, a bent portion 28a is formed at least at the tip of one of the movable roofs 28, and is bent upward at a different height so as to be higher than the height position of the other movable roof 28. It is characterized by

<<Operation>> The rotatably pivoted movable roof moves to the center of the opening, completes the dome shape together with the fixed roof, and closes off the inside of the structure.

On the other hand, during good weather, the movable roof can be moved onto the fixed roof to open the opening and allow natural lighting.

When opening and closing an opening, the rotation trajectories of adjacent movable roofs will partially overlap, but since there is a bend at the tip of each movable roof, mutual interference will be avoided. Even if all the movable roofs are driven at the same time, no problem will occur.

<<Example>> Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 to 4 show an embodiment of the retractable dome roof according to the present invention.

The retractable dome roof shown in the figure is an example of a case where it is applied to an athletic field such as a baseball field, and a stand 12 for accommodating spectators is provided inside a cylindrical outer wall 10 with an open top end. The center part serves as a field 14 for competition.

A peripheral edge of a fixed roof 16 whose plane is donut-shaped and curved in an arc is fixed to the upper end of the outer wall 10, and a field 14 is fixed at the center O of the fixed roof 16.
A circular opening 18 is provided so as to correspond to the .

An annular beam 20 is located at the center O of the opening 18, and a plurality of beam members 2 extend radially into the opening 18 from the annular beam 20 toward the fixed roof 16.
2 and 22 are installed to divide the opening 18 into eight approximately triangular shapes.

A truss structure is used for each of the beams 22 and the fixed roof 16, and two arcuate guide members 26 are arranged between them with the central axis 24 at the point where the beams 22 reach the periphery of the opening 18. Each has been handed over.

Approximately half of each guide member 26 is laid on the fixed roof 16, and the inner guide member 26a is composed only of a guide rail that engages with a roller attached to the lower surface of the movable roof, which will be described later. The outer guide rail 26b likewise includes a guide rail that engages with the rollers and a rack that engages with a rotationally driven gear mounted on the movable roof.

On each of the central axes 24, there are eight movable panels that are shaped like the eight triangles divided by the beams 22, placed on the guide member 26, and curved with the same curvature as the fixed roof 16. The roofs 28, 28 are rotatably pivotally connected.

Attached to the lower surface of each movable roof 28 are rollers 30, 30 that engage with the inner and outer guide members 26a, 26b, respectively, and a gear that meshes with the outer guide roller 26b.

Furthermore, when the opening is closed, each movable roof 28 has its tip end located at the center O bent upward to form a bent portion 28a.

The retractable dome roof configured as described above has gears attached to each movable roof 28, such as electric motors,
When the movable roofs 28 are rotationally driven by compressed air, hydraulic pressure, etc. and rotated toward the center O side of the opening 18 along the guide member 26, the apexes of each movable roof 28 come into contact with each other to close the opening 18 and fix it. A dome-shaped roof is completed together with the roof 16 to close off the inside of the stadium.

On the other hand, when each movable roof 28 is rotated outward from the closed state, the movable roof 28 is guided by the guide member 26 and positioned on the fixed roof 16, opening the opening 18.

When opening and closing the opening 18, the rotation loci (,) of adjacent movable roofs 28 partially overlap as shown in FIG.
Since a bent part 28a is provided at the tip of each movable roof 28, mutual interference is prevented, and all movable roofs 28
There is no problem in driving 8 at the same time.

The means for preventing interference between the movable roofs 28 is not limited to this, and for example, the heights of adjacent movable roofs 28 may be varied in a stepped manner.

In the above embodiment, the bottom of each movable roof 28 is shown as a straight line, but this is shown as a circular opening 1.
It is preferable to use an arc having the same curvature as 8.

Further, the shape of the opening 18 is not limited to a circular shape, but may be polygonal, and the number of movable roofs 28 is not limited to the above embodiment, and various numbers can be adopted.

<<Effects of the Invention>> As described above in detail in the embodiments, in the retractable dome roof according to the present invention, by rotating the movable roof toward the center and closing the opening, the inside of the structure can be closed. It can block the intrusion of rainwater and sunlight, making it possible to hold athletic events and events even in the rain or under the scorching sun.

On the other hand, during the mid-season or on sunny days, the movable roof is rotated over the fixed roof and the opening is opened, making it possible to hold athletic events under the sky.

In addition, if the opening is covered with a movable roof at night, the lighting inside will be reflected, increasing the lighting effect.

Furthermore, interference between adjacent movable roofs can be prevented by providing the bent portions, and all movable roofs can be rotated at the same time to speed up the opening and closing of the opening.

[Brief explanation of the drawing]

Figures 1 to 4 show an embodiment of the present invention. Figure 1 is a sectional view when the opening is closed, Figure 2 is a plan view when the opening is opened, and Figure 3 is a movable An explanatory diagram of the rotation locus of the roof, FIG. 4 is a sectional view of the movable roof. 10...Outer wall, 12...Stand, 14...Field, 16...Fixed roof, 18...Opening, 2
0... Annular beam, 22... Beam material, 24... Central axis,
26...Guide member (a...inside, b...outside),
28...Movable roof, 30...Roller.

Claims (1)

[Claims] 1. A dome-shaped fixed roof 16 whose peripheral edge is fixed to an upright outer wall 10, and an opening 1 formed approximately at the center of the fixed roof 16.
8, extending radially from the center of the opening 18;
A plurality of beams 22 are installed in the center, and the point where the beams 22 reach the opening 18 is defined as the central axis 2.
4, an arcuate guide member 26 installed between the fixed roof 16 and the beam 22; and a substantially triangular movable roof rotatably pivoted at one vertex on the central axis 24. 28, the movable roof 28 is rotatably moved along the guide member 26 to freely open and close the opening 18,
Among the movable roofs 28 that are adjacent to each other and whose trajectories during opening and closing operations overlap with each other, one of the movable roofs 28
At least the tip portion of the other movable roof 28
A retractable dome roof characterized in that a bent part 28a is formed at a different height and bent upward so as to be above the height position.