JPH0552384B2 - - 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 roof structure whose periphery is fixed to an upright external wall, the roof having a circular opening in the center. and a pair of semi-circular movable roofs that divide the opening into two, the radius of curvature of the movable roof being smaller than the radius of curvature of the fixed roof. It is characterized in that the openings are opened and closed close to or apart from each other along a plurality of guide members provided.

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

FIGS. 1 and 2 show an embodiment of the retractable dome roof according to the present invention.

The dome roof shown in the figure includes a cylindrical outer wall 10 that is erected on the ground and has an open upper end, and a circular concentric opening 1 that is fixed at the periphery on the outer wall 10.
2, a donut-shaped fixed roof 14 having an opening 1;
2, and a pair of movable roofs 16, 16 that open and close.

The fixed roof 14 has a dome shape with a spherical surface with a radius of curvature r1 cut out by the opening 12, while the movable roof 16 has a semicircular planar shape with the opening 12 divided into two parts, and a pair of movable roofs 16 , 16 are brought into contact with each other, a dome with a radius of curvature r1 is formed, and the radius of curvature r1 of the movable roof 16 is smaller than the radius of curvature r2 of the fixed roof 14.
The plane radius of the fixed roof 14 and the width W of the fixed roof 14 are set to be approximately the same length.

Note that both the fixed roof 14 and the movable roof 16 are formed by extending a translucent membrane material over a frame made of steel or the like.

The moving mechanism of each movable roof 16, 16 includes a space adjustment member 18 for adjusting the height above the fixed roof 14.
A guide member 20 consisting of a guide rail and a rack laid along the curvature of the movable roof 16, and a gear that is attached to the movable roof 16 and meshes with the roller and rack that roll along the guide rail. The guided member 22
When the gear of the movable roof 1 is driven to rotate by an electric motor, compressed air, hydraulic pressure, etc., the movable roof 1 is rotated along the guide member 20.
6 close to each other to close the opening 12, and when rotated in the opposite direction, separate from each other to open the opening 12.

FIG. 2 is a perspective view showing the opening and closing states of the opening 12 described above.

Note that the guide member 20 is connected to each movable roof 16, 16.
A plurality of guided members 22 are provided at three locations on the central axis and at both ends, and a differential device is attached to the rotationally driven gear.

When the movable roof 16 becomes so heavy that it becomes difficult to move it with a single drive source, the differential device prevents the mutual movement of the guide members because it is difficult to synchronize multiple drive sources. This is to absorb errors and prevent damage to any of the drive sources due to excessive load being applied to them.

Therefore, in the retractable dome roof configured as described above, in rainy weather or in summer, by bringing the movable roofs 16 close to each other and closing the openings 12, it is possible to block the intrusion of rainwater and sunlight. It will be possible to hold athletic events and events even in the rain or under the scorching sun.

On the other hand, in the middle of the season or when the weather is clear, the movable roofs 16 are separated from each other and the openings 12 are opened, allowing athletics to be held under the sky.

Furthermore, when the opening 12 is closed by the movable roof 16 at night, etc., the radius of curvature r1 of the movable roof 16 is smaller than the radius of curvature r2 of the fixed roof 14, so that the interior illumination light is By reflecting, the illumination effect can be particularly enhanced in the central portion directly below the movable roof 16.

Furthermore, since the movable roof 16 is curved with a radius of curvature r1 smaller than the radius of curvature r2 of the fixed roof 14, the movable roof 16 is curved with a radius of curvature approximately equal to the radius of curvature r2 of the fixed roof. The rigidity can be increased geometrically by the section modulus or the like without using a reinforcing frame, and the stability of the movable roof 16 can be increased when opening and closing the opening 12. Furthermore, in addition to the above-mentioned improvement in rigidity, by making the movable roof 16 curve more greatly than the fixed roof 14, the membrane material of the movable roof 14 can be easily stretched.

Furthermore, the radius of the movable roof 16 can be changed to the fixed roof 1
4, the movable roof 16 is on the fixed roof 14 when the opening 12 is opened and does not protrude from the fixed roof to the outside, which is convenient in terms of appearance.

<<Effects of the Invention>> As described above in detail in the examples, the retractable dome roof of the present invention exhibits the following excellent effects.

(1) By placing the movable roofs close to each other and closing the openings during rainy weather or in the summer, it is possible to block the intrusion of rainwater and sunlight, making it possible to hold athletic events and events even in rainy weather or under the scorching sun. do.

(2) On the other hand, in the middle of the season or on sunny days, the movable roofs are moved apart from each other and the openings are opened, allowing athletics to be held under the sky.

(3) Also, since the radius of curvature of the movable roof is smaller than that of the fixed roof, when the opening is closed with the movable roof at night, the internal illumination light will be reflected by the movable roof, especially directly below it. The lighting effect of the central part of the can be enhanced.

(4) Furthermore, by making the radius of curvature of the movable roof smaller than that of the fixed roof, the rigidity of the movable roof can be increased geometrically, and the stability of the movable roof can be improved even when the opening of the movable roof is closed. You can increase your sexuality.

[Brief explanation of the drawing]

1 and 2 show one embodiment of the present invention, FIG. 1A is an overall view, FIG. 1B is a plan view of the same, and FIG. 2A is a perspective view with the opening closed. , second
Figure B is a perspective view with the opening opened. 10... Exterior wall, 12... Opening, 14... Fixed roof, 16... Movable roof, 18... Spacing adjustment material, 2
0... Guide member, 22... Guided member.

Claims (1)

[Claims] 1 In a dome-shaped roof structure whose peripheral edge is fixed to an upright external wall, the roof consists of a fixed roof with a circular opening in the center and a pair of semicircular movable roofs that divide the opening into two. The movable roof has a radius of curvature smaller than that of the fixed roof, and the openings are arranged close to or apart from each other along a plurality of guide members provided on the fixed roof. A retractable dome roof characterized by opening and closing.