JP2500056B2 - Flat floor mobile bleachers - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat floor type moving bleacher which is installed and used in a general physical education and culture center.

[0002]

2. Description of the Related Art Recently, the construction of multi-purpose halls that can be used not only for sports but also for lectures, concerts, etc. has become popular. As a viewing facility installed in this kind of multi-purpose hall, for example, a flat floor type moving bleacher is installed in the first half area near the stage, and a floor-standing type moving bleacher is installed in the latter half area to be used as a gymnasium. In such a case, move the flat floor of the flat-floor moving bleachers to the space below the stage for storage, and shrink the tiers of the multi-tiered moving bleachers in a telescopic manner to make them compact by the wall of the hall. Various types of storage devices have been developed.

By the way, in this kind of conventional flat floor type moving bleacher, as shown in, for example, FIGS. 4 to 5, a flat floor 101 having a large number of viewing chairs (not shown) is mounted on a fixed floor F. It is arranged so that it can be moved back and forth via 102, and when not in use, this flat floor 101 can be moved to and stored in the lower space 111 of the stage 110.
(Shown in phantom in FIG. 1). Then, in order to prevent the posture of the flat floor 101 from being disturbed when it is stored or pulled out, two parallel fixed rails 103 are provided on the fixed floor surface F in the lower space 111 of the stage 110, and the flat floor 10 is provided.
Adjacent to the inside of both fixed rails 103 on the lower surface of 1
A movable rail 104 of a book is fixedly installed, and each movable rail 1
The guide roller 105 axially attached to the end of 04 is brought into rolling contact with the corresponding fixed rail 103, and each fixed rail 1
The guide roller 106 axially attached to the end portion of 03 is brought into rolling contact with the corresponding movable rail 104.

[0004]

However, in such a conventional one, since it is necessary to lay the fixed rail 103 in the lower space 111 of the narrow stage 110 and fix it to the fixed floor surface F, it is troublesome and time-consuming for the construction. There is a problem that requires. Further, since it is not possible to expect high horizontal accuracy on the fixed floor surface F which is a part of the building, the long fixed rail 103 is likely to have an undulating portion or an inclined portion.
Therefore, in order to guide the flat floor 101 smoothly by rolling the guide rollers 105 and 106 in an optimum state at all times, it is necessary to partially correct the posture of the fixed rail 103 after installation. A great deal of work may be required.

As another method, a plurality of guide rollers are axially mounted on a fixed floor surface in a row, and a channel material opening downward is fixedly provided on the lower surface of a flat floor, and the inner wall of the channel material is fixed to the fixed wall surface. There is also a guide roller that can guide the flat bed to make a linear motion.
This one has guide rollers mounted not only below the stage but also on the fixed floor in front of the stage. Therefore, in such a method, not only work in the space below the stage is required at the time of construction, but also whenever the flat floor is stored under the stage, the operation of removing the guide roller left in front of the stage from the fixed floor surface It will be indispensable and will require a great deal of trouble for facility managers.

An object of the present invention is to solve such a problem.

[0007]

In order to achieve the above object, the present invention takes the following measures. That is, in the flat floor type mobile bleacher according to the present invention, a flat floor for viewing is arranged on a fixed floor surface so as to be movable back and forth,
At least two parallel guide rails extending in the advancing / retreating direction are fixedly attached to the lower surface of the flat floor in the moving floor with a flat floor so that the flat floor can be moved to and stored in the space below the stage when not in use. At least two guide rollers for guiding the guide rails are pivotally attached to each of the guide rails in the vicinity of the front edge of the stage on the fixed floor in the lower space.

In order to improve the stability of the flat floor during movement, guide rails are provided in the vicinity of the left and right side edges of the flat floor, and two guide rollers can be brought into rolling contact with the inner side surface of each of the guide rails. Is desirable. Further, in consideration of the case where the flat floor is completely pulled out from the front edge of the stage, it is preferable to incline the end portions of both guide rails on the stage side in directions away from each other.

[0009]

With this structure, the guide roller is pivotally mounted on the fixed floor surface near the front edge of the stage in the space below the stage. Therefore, the pivoting operation at that time is on the front side of the stage. This can be done while using the space of the fixed floor surface portion for installing the flat floor. Normally, the lower space of the stage is not high enough for the worker to stand up and is forced to bend over, but the position where the guide roller is attached is the lower space near the front edge of the stage. It is possible to work from the outside of the flat floor installation place in front of the stage, that is, the lower space, in a relatively comfortable posture with the arms extended slightly.

Since the long guide rail is fixed to the lower surface of the flat floor with respect to the guide roller thus axially mounted, it is not necessary to fix it on the construction site of the flat floor, and it can be installed in the factory. It is possible, and in that case there is no dimensional deviation between the guide rails, and it is possible to ensure that the guide rails are fixed in the correct position. By attaching at least two guide rails near the left and right side edges, swinging to the left and right during movement of the flat floor, that is, disturbance of the posture during movement, can be minimized, and the stability of forward and backward movement is improved. . Furthermore, if the stage side end of the guide rail is inclined in a direction away from each other, even when the flat rail pulled out to the front of the stage is put away, even if the end of the guide rail is separated from the guide roller, Guide the guide roller with the inclined part,
The guide roller is quickly rolled on the guide rail to enable stable movement of the flat floor.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

In the flat floor type moving bleeding table MS shown in FIG. 1, a flat floor 1 for viewing is arranged on a fixed floor surface F so as to be able to move back and forth, and when not in use, the flat floor 1 is a lower space under a stage 2. It is configured so that it can be moved to S for storage. This flat floor type moving spectator MS has a flat floor 1, two guide rails 3 fixed to the lower surface 1a of the flat floor 1 in parallel with each other, extending in the advancing / retracting direction D, and a flat floor 1 outside the guide rails 3. 4 mounted on the lower surface 1a of the wheel 4 and rotatable in the forward / backward direction D of the flat floor 1
A driving device 5 attached to the rear end of the flat floor 1 to generate a moving force; and a retractable viewing chair 6 fixed to the upper surface of the flat floor 1.

The guide rails 3 are made of, for example, an angle member, and are fixed one by one near the left and right side edges 1b, 1c of the lower surface of the flat floor 1, and the stage side end portions 3b are inclined in a direction away from each other. One inner side surface 3 of the guide rail 3 facing each other
The surface distance from a to the other inner surface 3a corresponds to the distance between the outer peripheral surfaces of the guide rollers 7 which will be described later. The distance between the stage side end portions 3b is set to be longer than the surface distance by, for example, the diameter of the guide roller 7. A plurality of wheels 4 are mounted on the straight line of the advancing / retreating direction D between the guide rail 3 and the skirt 1d depending on the side surface of the flat floor 1. The drive device 5 is
For example, a pair of two driving wheels connected by a roller chain with rubber and a geared motor with a brake that rotationally drives the driving wheels are provided, and are configured to move the flat floor 1 forward and backward at a constant speed. There is. The viewing chair 6 includes a chair body 6a and a chair body 6 that is folded when stored.
A standing device 6b for standing up a when used.
As the drive device 5 and the standing device 6b, those widely used in the relevant field may be applied as they are.

With respect to the flat floor 1 as described above, a guide for guiding two guide rails 3 fixed to the lower surface 1a of the flat floor 1 is provided in the lower space S near the stage front edge 21 of the fixed floor surface F. The roller 7 is 2 for one guide rail 3.
Each of them is axially mounted at a predetermined distance in the advancing / retreating direction D. Each of the guide rollers 7 includes a base 7b on which a rotating shaft 7a is erected, and a roller body 7c rotatably attached to the rotating shaft 7a, and the outer circumferences of the roller bodies 7c on opposite sides of each other. The base 7b is fixed to the fixed floor surface F at a position where the surface rolls on the inner side surface 3a of each guide rail 3.

When such a flat floor type moving bleacher MS is installed in, for example, a gymnasium, the guide roller 7 is installed on the fixed floor F in accordance with the installation position. When the placement of the flat floor type moving bleachers MS with respect to the stage 2 is determined, the guide rollers 7 are installed on the fixed floor surface F in the width direction of the stage 2 based on the surface distance of the guide rails 3 of the flat floor 1. decide. Next, the installation position in the depth direction of the stage 2 is a position slightly entering the lower space S below the stage 2 from the front edge 21 of the stage, particularly with the body extended as much as possible in front of the stage 2 with the worker's arms extended during work. Set it to the position where it appears as if it were in space. Also, the distance between the two guide rollers 7 is set such that when the front guide roller 7 is set slightly behind the front edge 21 of the stage, the guide roller 7 on the back side of the stage 2 is set to the stage 2.
Set it so that you can work from the front space and that you are as far away as possible. That is, when the respective guide rollers 7 are attached to the fixed floor surface F, it is preferable that the respective guide rollers 7 are installed apart from each other without being extremely close to each other. The guide roller 7 corresponding to one guide rail 3 is arranged on a straight line in the advancing / retreating direction D and has its base 7b.
Must be fixed.

In such a flat floor type moving bleacher MS, when it is stored in the lower space S (shown by phantom lines in FIGS. 1 and 2), all the viewing chairs on the upper surface of the flat floor 1 are folded. Therefore, even if the lower space S has a low height, it can be sufficiently stored. When the drive device 5 is operated to move from the lower space S toward the installation location, the flat floor 1 moves from the lower space S to the front of the stage 2. This time,
Each of the guide rails 3 has a pair of two guide rollers 7.
They are in contact with each other and guide the movement of the flat floor 1 and regulate the direction. That is, in the flat floor 1, the guide rails 3 are fixed in parallel and the guide rollers 7 are in rolling contact with the inner side surface 3 a of the guide rail 3, so that the flat floor 1 does not move completely in the width direction. Further, since the two guide rollers 7 are configured as a set, the predetermined length of the guide rail 3 determined by the distance between the guide rollers 7 is always constrained from the inside by the pair of guide rollers 7. Therefore, the front edge or the rear edge of the flat bed 1 is laterally moved in a direction perpendicular to the direction of movement, that is, the edge is oscillated to the left and right to prevent the posture from being disturbed. Then, when the flat floor 1 moves to a predetermined position, the standing device 6b is operated to stand up the viewing chair 6, and the placement of the flat floor moving viewing seat MS is completed.

Depending on the location, the guide rail 3 may be located further ahead of the stage 2 than the position where the guide roller 7 is attached to the shaft, and the guide rail 3 may be placed completely away from the guide roller 7. In such a case, when the flat floor 1 is moved to be stored in the lower space S, the guide roller 7 comes into contact with the stage side end portion 3b of the guide rail 3,
When further moving from that position in the direction of the stage 2, the flat floor 1 moves so that the guide roller 7 is brought into rolling contact with the inner side surface 3 a of the guide rail 3. Then, after the guide roller 7 rolls on the inner side surface 3a of the guide rail 3, the guide roller 7 guides to the lower space S while prohibiting the rolling like the movement when the flat floor 1 is arranged.

As described above, in this flat floor type moving spectator MS, the guide roller 7 for defining the moving direction in the forward and backward movement of the flat floor 1 is provided in the lower space S in the vicinity of the stage front edge 21 of the fixed floor surface F. Since it is pivotally attached, workability in construction can be improved, which saves labor and greatly shortens time. That is, the work required for the construction is only the work of pivotally attaching at least two guide rollers 7 to the fixed floor surface F with respect to one guide rail 3, and the horizontal accuracy of the fixed floor surface F should be taken into consideration. Can be done without. Further, even if the horizontal accuracy is extremely poor, the fixed floor surface F may be corrected within a narrow range such as the base 7b of the guide roller 7, so that the number of additional man-hours required for the construction is extremely small. .

Although the number of guide rollers 7 for one guide rail 3 is as small as two, the number of guide rollers 7 is two, so that the guide rail 3 is provided.
Are in point contact with each other at two points, so that they can move in a substantially straight line without rolling when the flat bed 1 moves back and forth.
Moreover, the end 3b of each guide rail 3 on the stage side
Is inclined toward the outside, so that the guide roller 7 can be easily guided to the inner side surface 3a even when the guide roller 7 rolls on the guide roller 7 from the state where the guide rail 3 is not provided beside the guide roller 7. . Then, after storing the flat floor 1, the guide roller 7 is positioned below the rear end of the flat floor 1, and the space in front of the stage 2 is restored to the original state without the work accompanying the storage of the flat floor 1. .

The present invention is not limited to the embodiment described above. For example, when the width of the flat bed 1 is wide, the number of guide rails 3 may be more than two, and the guide rollers 7 are also different from the above embodiment.
The number of guide rails 3 may be three or more for one guide rail 3. Further, the fixed position of the guide rail 3 need not be near the left and right side edges 1b, 1c of the flat floor 1, but the larger the distance between the inner side surfaces 3a of the guide rail 3 is, the easier the structure is to prevent lateral rolling. Become.

In addition, the configuration of each part is not limited to the illustrated example, and various modifications can be made without departing from the spirit of the present invention.

[0022]

As described in detail above, according to the present invention, since the guide roller rolling on the guide rail is pivotally attached to the fixed floor surface near the front edge of the stage in the lower space below the stage, it is impossible. There is no need to work in different postures,
No longer affected by low horizontal accuracy of fixed floor,
Therefore, the construction workability can be greatly improved,
As a result, the man-hours can be reduced, and since the work does not leak from the stage after use, the work for managing the facility can be reduced.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of the present invention.

FIG. 2 is a plan view showing a state in which the flat floor of the same embodiment is seen through.

FIG. 3 is a front view showing an enlarged main part of the embodiment.

FIG. 4 is a plan view of a conventional example in a state of being transmitted through a flat floor.

FIG. 5 is a front view showing an enlarged main part of a conventional example.

[Explanation of symbols]

 1 ... Flat floor 1a ... Lower surface 2 ... Stage 21 ... Stage leading edge 3 ... Guide rail 7 ... Guide roller F ... Fixed floor surface S ... Lower space

Claims (3)

(57) [Claims] 1. A flat-floor-type mobile viewing system in which a flat-bed for viewing is arranged on a fixed floor so as to be able to move forward and backward, and the flat-bed can be moved to and stored in the space below the stage when not in use. In the seat, at least two parallel guide rails extending in the advancing / retreating direction are fixedly provided on the lower surface of the flat floor, and guide rollers for guiding the guide rails are provided near the front edge of the stage on the fixed floor in the lower space. A flat-bed mobile bleacher, characterized in that at least two guide rails are attached to each guide rail. 2. A guide rail is provided in the vicinity of both left and right edges of a flat floor, and two guide rollers can be respectively brought into rolling contact with the inner side surface of each of the guide rails. Flat floor mobile bleachers. 3. The flat-bed mobile bleacher according to claim 2, wherein the end portions of both guide rails on the stage side are inclined in directions away from each other.