US20090211169A1

US20090211169A1 - Movable spectator's stand with auxiliary spectator's stage

Info

Publication number: US20090211169A1
Application number: US11/574,479
Authority: US
Inventors: Shin-Sang Ham
Original assignee: UNITECH SYSTEM CO Ltd
Current assignee: UNITECH SYSTEM CO Ltd
Priority date: 2004-08-31
Filing date: 2004-11-17
Publication date: 2009-08-27
Also published as: KR20060020341A; KR100751386B1; WO2006025630A1

Abstract

A movable spectator's stand with an auxiliary spectator's stage, wherein the auxiliary spectator's stage is foldably connected to the front part of the lowermost spectator's stage of multistage spectator's stages, thereby, when the movable spectator's stand is in use, increasing spectator capacity in proportion to the dimensions of the auxiliary spectator's stage, and, when the auxiliary spectator's stage is folded and covers the front surface of the movable spectator's stand after the movable spectator's stand is retracted, defining a smooth and clean external appearance and preventing safety accidents generated due to the approach of children thereto.

Description

TECHNICAL FIELD

The present invention relates to a movable spectator's stand with an auxiliary spectator's stage, and more particularly, to a movable spectator's stand with an auxiliary spectator's stage, which accommodates spectators having a capacity much more than the maximum occupant load given by a limited installation space, defines a smooth and clean external appearance when the movable spectator's stand is retracted, and prevents safety accidents generated due to the approach of children thereto.

BACKGROUND ART

Korean Utility Model Registration No. 20-0284971 and Korean Patent Laid-open Publication No. 10-2004-0084070 disclose conventional movable spectator's stands. The above conventional movable spectator's stands are configured such that multistage spectator's stages including a plurality of foldable chairs installed thereon are protracted and retracted, and more effectively use a space, such as a gymnasium, an assembly hall, an indoor chamber, or an exhibition center, thus being increasingly demanded.
The maximum height of each of the above movable spectator's stands is limited based on the safety of spectators, the viewing angle of spectators seated on the uppermost spectator's stage, and the height of the installation space, and the length between front and rear ends of each of the spectator's stages is limited in order to obtain a sufficient space when each of the above movable spectator's stands is folded. Thereby, the above movable spectator's stands cannot accommodate spectators having a large capacity, and thus, when the spectator capacity exceeds the occupant load, handy chairs must be placed in front of the protruded spectator's stages in order to accommodate all of the spectators, thereby requiring an additional space for storing the handy chairs as well as incurring costs for purchasing the handy chairs. Further, whenever the handy chairs are used, it takes a great deal of manpower and time to place and remove the handy chairs.
Since it is difficult to install a cover at the front end of the protracted movable spectator's stand, the multistage spectator's stages and the foldable chairs installed on the multistage spectator's stages are exposed to the outside, thereby detracting from the external appearance of the movable spectator's stand. Further, when the movable spectator's stand is not in use, people easily collide therewith, or children, who have little attentiveness, play on the movable spectator's stand as a playing tool, thereby frequently encountering safety accidents when going up and down the exposed multistage spectator's stages. Accordingly, methods for preventing the above problems are required without delay.

DISCLOSURE OF INVENTION

Technical Problem

Therefore, the present invention has been made in view of the above problems, and it is an object of the present invention to provide a movable spectator's stand with an auxiliary spectator's stage, which accommodates spectators having a large capacity while not interfering with the height and the length thereof given by a limited installation space, and covers multistage spectator's stages and foldable chairs installed thereon and serves as a wall member, when the movable spectator's stand is retracted.
It is another object of the present invention to provide a structure of a movable spectator's stand with an auxiliary spectator's stage, which is applied to all of conventional movable spectator's stands.

Technical Solution

In accordance with an aspect of the present invention, the above and other objects can be accomplished by the provision of a movable spectator's stand with an auxiliary spectator's stage, wherein the auxiliary spectator's stage is foldably connected to the front part of the lowermost spectator's stage of multistage spectator's stages.
The auxiliary spectator's stage has dimensions sufficient to cover the front surface of the retracted movable spectator's stand when the auxiliary spectator's stage is folded. Preferably, the auxiliary spectator's stage may include foldable chairs installed thereon. On the other hand, the auxiliary spectator's stage may include handy chairs installed thereon.

ADVANTAGEOUS EFFECTS

When the auxiliary spectator's stage B of the movable spectator's stand A of the present invention is not in use, the auxiliary spectator's stage B is folded to the front part of the lowermost spectator's stage in a state in which the auxiliary spectator's stage B is separated from the lowermost spectator's stage by the minimum interval. Accordingly, the movable spectator's stand A with the auxiliary spectator's stage B of the present invention accommodates spectators having a large capacity in proportion to the dimensions of the auxiliary spectator's stage B while not interfering with the height and the length thereof given by a limited installation space, and eliminates inconvenience due to the use of separate handy chairs for accommodating excess spectators.
When the auxiliary spectator's stage B is folded after the movable spectator's stand A of the present invention is retracted, the auxiliary spectator's stage B covers the multistage spectator's stages 2 a and 2 b and the foldable chairs 4 a installed thereon to define a smooth and fine external appearance, and serves as a wall member perpendicular to the surface of the earth to prevent safety accidents generated due to the approach of children thereto.
The movable spectator's stand A of the present invention is configured such that the auxiliary spectator's stage B is foldably connected to the front part of the lowermost spectator's stage 2 a, thereby being simply applied to structures of conventional movable spectator's stands.

DESCRIPTION OF DRAWINGS

The above and other objects, features and other advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:

FIG. 1 is a side view of a movable spectator's stand, in a state in which an auxiliary spectator's stage is folded, in accordance with one embodiment of the present invention;

FIG. 2 is a partial side view of the movable spectator's stand, in a state in which the auxiliary spectator's stage is unfolded, in accordance with one embodiment of the present invention;

FIG. 3 is a schematic side view of the movable spectator's stand, in a state in which the auxiliary spectator's stage is unfolded, in accordance with one embodiment of the present invention;

FIG. 4 is a schematic side view of the movable spectator's stand, in a state in which the auxiliary spectator's stage is folded, in accordance with one embodiment of the present invention;

FIG. 5 is a partial schematic plan view of the movable spectator's stand in accordance with one embodiment of the present invention;

FIG. 6 is a side view of a movable spectator's stand, in a state in which an auxiliary spectator's stage is folded, in accordance with another embodiment of the present invention;

FIG. 7 is a partial side view of the movable spectator's stand, in a state in which the auxiliary spectator's stage is unfolded, in accordance with another embodiment of the present invention;

FIG. 8 is a schematic side view of the movable spectator's stand, in a state in which the auxiliary spectator's stage is unfolded, in accordance with another embodiment of the present invention;

FIG. 9 is a schematic side view of the movable spectator's stand, in a state in which the auxiliary spectator's stage is folded, in accordance with another embodiment of the present invention; and

FIG. 10 is a partial schematic plan view of the movable spectator's stand in accordance with another embodiment of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION

FIG. 1 is a side view of a movable spectator's stand, in a state in which an auxiliary spectator's stage is folded, in accordance with one embodiment of the present invention, and FIG. 2 is a partial side view of the movable spectator's stand, in a state in which the auxiliary spectator's stage is unfolded, in accordance with one embodiment of the present invention. The movable spectator's stand A in accordance with this embodiment of the present invention comprises multistage spectator's stages 2 a and 2 b, and auxiliary spectator's stage B connected to front parts of the lowermost spectator's stage 2 a such that the auxiliary spectator's stage B is foldable.
The movable spectator's stand A has a general structure, in which the multistage spectator's stages 2 a and 2 b provided with a plurality of foldable chairs 4 a installed on the upper surfaces thereof are connected such that the multistage spectator's stages 2 a and 2 b are protracted and retracted.
Further, the auxiliary spectator's stage B has dimensions sufficient to cover the front surface of the movable spectator's stand A when the auxiliary spectator's stage B is folded. In the same manner as the multistage spectator's stages 2 a and 2 b, preferably, a plurality of foldable chairs 4 b are installed on the upper surfaces of the auxiliary spectator's stage B. However, separable handy chairs may be installed on the upper surface of the auxiliary spectator's stage B. Preferably, the auxiliary spectator's stage B, which are provided with the foldable chairs 4 b, has a height lower than that of the lowermost spectator's stage 2 a, thereby permitting spectators to obtain a good field of vision.
As the simplest connection means between the auxiliary spectator's stage B and the lowermost spectator's stage 2 a of the movable spectator's stand A such that the auxiliary spectator's stage B are folded to the lowermost spectator's stage 2 a, at least two brackets 6 are protruded from the lowermost spectator's stage 2 a, and a support rod 8 rotatably connected to the brackets 6 through bearings or bushings is installed on the auxiliary spectator's stage B. On the contrary, the brackets 6 may be protruded from the auxiliary spectator's stage B. and the support rod 8 rotatably connected to the brackets 6 may be installed on the lowermost spectator's stage 2 a, thereby causing the auxiliary spectator's stage B to be folded and unfolded.
Here, the auxiliary spectator's stage B includes a protrusion, formed on the rear end thereof, having a height higher than those of other parts, and the support rod 8 is connected to the auxiliary spectator's stage B through the protrusion, thereby causing the auxiliary spectator's stage B to have a height sufficiently lower than that of the lowermost spectator's stage 2 a.
The folding and unfolding of the auxiliary spectator's stage B is achieved by manual operation. Preferably, for convenience, the folding and unfolding of the auxiliary spectator's stage B is linked with the protraction and retraction of the movable spectator's stand A.
In case that the folding of the auxiliary spectator's stage B is performed after the retraction of the movable spectator's stand A is performed, in the same manner as the multistage spectator's stages 2 a and 2 b, the auxiliary spectator's stage B includes wheels, and the rear surface of the auxiliary spectator's stage B is coated with a sound absorbing material, which has a color harmonizing with the surrounding environment and is treated with a fire retardant, thereby serving as a wall absorbing indoor noise.
In case that the auxiliary spectator's stage B of the movable spectator's stand A, which have a comparatively high weight, is folded by worker's manual operation, at least one spring 10 is installed between the lowermost spectator's stage 2 a and the auxiliary spectator's stage B, thereby allowing the worker to fold or unfold the auxiliary spectator's stage B with minimal effort.
Further, at least one gas cylinder 12 is installed between the lowermost spectator's stage 2 a and the auxiliary spectator's stage B, thereby allowing the worker to fold or unfold the auxiliary spectator's stage B with more minimal effort.
A general speed decelerator, serving as means for folding and unfolding the auxiliary spectator's stage B by manual operation, is installed on the lowermost spectator's stage 2 a, and is connected to the support rod 8 of the auxiliary spectator's stage B, thereby allowing the auxiliary spectator's stage B to be folded and unfolded with minimal effort.
As another example of the manual operation, the uppermost stationary spectator's stage includes a winding roller, on which a wire-rope is wound. In a state in which the movable spectator's stand A is retracted, the wire-rope is connected to the front part of the auxiliary spectator's stage B, and is then wound on the winding roller, thereby folding the auxiliary spectator's stage B. Further, the wire-rope is unwound from the winding roller, thereby unfolding the auxiliary spectator's stage B. Here, the winding roller can be automated by employing an electric motor.
A space, which is formed between the surface of the earth and the auxiliary spectator's stage B folded from the lowermost spectator's stage 2 a, is intercepted by a cover 18 hinged to the front surface of the lower part of the auxiliary spectator's stage B, which is folded. In case that the cover 18 has an inclined plane formed on the lower end thereof, the auxiliary spectator's stage B is folded by the guidance of the inclined plane of the cover 18, thereby protecting it from damage.
FIGS. 6 to 10 illustrate a movable spectator's stand in accordance with another embodiment of the present invention. A shaft 16 connected to a reduction motor 14 is formed on the lowermost spectator's stage 2 a′ of the movable spectator's stand A′ in parallel with a support rod 8′ of an auxiliary spectator's stage B′, and is connected to the support rod 8′ through a belt 20, such as a chain belt or a timing belt, thereby causing the auxiliary spectator's stage B′ to be folded and unfolded by the operation of the reduction motor 14. The reduction motor 14 is controlled by a controller for controlling the movable spectator's stand A′, thereby being capable of being operated in connection with the operation of the movable spectator's stand A′.
Further, a hydraulic cylinder or an air cylinder may be installed between the lowermost spectator's stage 2 a′ and the auxiliary spectator's stage B′, and may be controlled also by the controller for controlling the movable spectator's stand A′, thereby being capable of being operated in connection with the operation of the movable spectator's stand A′.

INDUSTRIAL APPLICABILITY

As apparent from the above description, the present invention provides a movable spectator's stand A with an auxiliary spectator's stage B connected to the front part of the lowermost spectator's stage 2 a such that the auxiliary spectator's stage B is foldable, thereby causing the auxiliary spectator's stage B to be simply applied to conventional movable spectator's stands without modification of the structure.
The movable spectator's stand A is protracted or retracted in a state in which the auxiliary spectator's stage B is folded. In case that the movable spectator's stand A is protracted or retracted in a state in which the auxiliary spectator's stage B is unfolded, the auxiliary spectator's stage B, which has wheels in the same manner as spectator's stages 2 a and 2 b, is efficiently operated without interfering with the operation of the movable spectator's stand A.
When the movable spectator's stand A is in use, the multistage spectator's stages 2 a and 2 b are protracted in the same manner as the conventional movable spectator's stand. Then, the auxiliary spectator's stage B is unfolded from the lowermost spectator's stage 2 b, and is occupied by spectators, thereby increasing spectator capacity of the movable spectator's stand A.
After the movable spectator's stand A is in use, the multistage spectator's stages 2 a and 2 b of the movable spectator's stand A are retracted in a state in which the auxiliary spectator's stage B is folded to the lowermost spectator's stage 2 a and stands in an upright position. Then, the auxiliary spectator's stage B is retracted together with the lowermost spectator's stage 2 a, and covers the front surface of the movable spectator's stand A, thereby defining a smooth and fine external appearance of the movable spectator's stand while preventing the multistage spectator's stages 2 a and 2 b and foldable chairs 4 a installed thereon from being exposed to the outside, and serving as a wall perpendicular to the surface of the earth so that children cannot approach the movable spectator's stand A to prevent safety accidents.
The auxiliary spectator's stage B is provided with a rear surface coated with a sound absorbing material, which has a color harmonizing with the surrounding environment and is treated with a fire retardant, thereby maintaining a clean appearance and reducing various noise generated from an indoor space.
The auxiliary spectator's stage B may be folded to or unfolded from the lowermost spectator's stage 2 a only by worker's force without any auxiliary means. On the other hand, in case that an impact-absorbing spring 10 or a gas cylinder 12 is installed between the auxiliary spectator's stage B and the lowermost spectator's stage 2 a, the auxiliary spectator's stage B can be simply folded to or unfolded from the lowermost spectator's stage 2 a with minimal effort.
Further, in case that a reduction motor 14 or a hydraulic cylinder is installed between the auxiliary spectator's stage B′ and the lowermost spectator's stage 2 a′, the auxiliary spectator's stage B′ can be conveniently folded to or unfolded from the lowermost spectator's stage 2 a′. The reduction motor 14 or the hydraulic cylinder is controlled in connection with the movable spectator's stand A′ by a controller for controlling the protraction and retraction of the movable spectator's stand A′, thereby allowing the auxiliary spectator's stage B′ to be more conveniently folded or unfolded from the lowermost spectator's stage 2 a′.
The auxiliary spectator's stage of the present invention may be applied to any movable spectator's stand having a structure such that the auxiliary spectator's stage is foldably connected to the front part of the lowermost spectator's stage.
Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

Claims

1. A movable spectator's stand comprising multiple spectator's stages connected such that the spectator's stages are movable, each spectator's stage including a plurality of spectator's seats connected to be foldable, further comprising:

an auxiliary spectator's stage (B) rotatably connected to a front part of a lowermost spectator's stage (2 a) of the multistage spectator's stages (2 a) (2 b) by a support rod (8), the auxiliary spectator's stage (B) including a plurality of spectator's seats,

wherein the support rod (8) is connected to a shaft (16) provided at the lowermost spectator's stage (2 a), and the shaft (16) is connected to a reduction motor (14).

2.-6. (canceled)