JP2574429Y2 - Portable stage holding device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable stage holding device in a multipurpose hall.

[0002]

2. Description of the Related Art In a multipurpose hall, when a stage is not required and a stage is used properly,
It is necessary to prepare a portable stage. When the stage is unnecessary, this portable stage is housed in a storage room provided in a part of the hall, and is pulled out when necessary and used as a stage.

[0003]

The above-mentioned portable stage is quite large, and is heavy. Therefore, there is a problem that a lot of labor is required for taking in and out, and a storage space is required. The problem of the present invention is to solve the above-mentioned problems of the conventional portable stage by lowering it into an opening provided on the floor when not in use, so that the upper surface of the portable stage and the floor are flush with each other. It is an object of the present invention to provide a portable stage holding device that can be stored at a predetermined height, lifted when necessary, and held at a fixed height by a stopper post.

[0004]

In order to solve the above-mentioned problems, the present invention provides an opening in a part of a floor, a detachable portable stage having a shape conforming to the opening, and the lower part of the opening. At a plurality of locations near the periphery of the portable stage, a locking pin that engages with a plurality of engagement holes at the periphery of the lower surface of the portable stage fitted in the opening is provided at the upper end. A fixed stopper post having a stopper for holding the same on the same surface is provided. In the vicinity of each fixed stopper post, when the portable stand is raised, the fixed stopper post engages with an engagement hole different from the engagement hole on the lower surface of the portable stage. And a stopper pin having a stopper for holding the portable stage at a position higher than the floor is provided.

[0005]

When the portable stage is unnecessary, each of the movable stopper posts is tilted down, and each pin of each fixed stopper post is fitted into a plurality of engagement holes around the lower surface of the portable stage. When supported by the stopper, the portable stage is stored in an opening provided on the floor, and the upper surface of the portable stage becomes a part of the floor.

When a portable stage is required, first, hooks at the lower ends of a plurality of lifting ropes suspended from a hoisting machine provided on the ceiling of the hall are engaged with engaging portions at the lower portion of the portable stage. Then, the portable stage is lifted to a predetermined height. In this state, the respective tiltable stopper posts are erected manually.

After that, the lifting stage is loosened to lower the portable stage, and the engaging pins of the upright stopper posts are engaged with the plurality of engaging holes around the lower surface thereof.
After the lower peripheral portion of the portable stage is supported by the stopper of the movable stopper post, each lifting rope is removed from the portable stage and wound up.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the embodiment shown in FIGS. 2 and 3, reference numeral 1 denotes a base surface, and a floor 2 of a hall is provided at a fixed height from the base surface. Reference numeral 3 denotes an opening provided at a predetermined position on the floor 2,
Reference numeral 4 denotes a portable stage that fits the opening. The plane shape of the portable stage 4 is usually rectangular as shown in FIG.

The portable stage 4 comprises a frame member 5 such as an angle or a channel, which is assembled vertically and horizontally to form a grid, and a floor plate 6 is stretched. A steel plate 7 is stretched to a lower surface near four corners of the stage 4. It is.

As shown in FIG. 1 and FIG. 5, each of the steel plates 7 has an engagement hole 1 on the outer side in the longitudinal direction of the portable stage 4.
0 and inner engaging holes 11 are provided, and a reinforcing ring plate is fixed around lower surfaces of these engaging holes.

A small window 12 is provided in the floor plate 6 on the inner side of each of the steel plates 7, and a detachable lid 13 is fitted to the window 12, and four sides thereof are formed on the upper surface of the frame member 5 as shown in FIG. So that the upper surface of the lid 13 and the upper surface of the floor plate 6 are flush with each other. Then, a suspension ring 14 is provided on the steel plate 7 below each window 12.

Reference numeral 15 in FIG. 2 and the like designates a holding frame made of a channel material fixed in parallel on the base surface 1 so as to be located below and inward of the longitudinal side of the portable stage 4. A fixed stopper post 16 made of a steel pipe or the like is vertically fixed on both ends of each holding frame 15.

The stopper post 16 is, as shown in FIG.
A bolt 19 is screwed into a screw hole at the upper end thereof and fixed with a lock nut 17. A locking pin 20 is provided at the upper end of the bolt 19 to be engaged with and disengaged from the engaging hole 10 outside the portable stage 4.
Are provided integrally.

A stopper 21 is mounted on the bolt 19. The stopper 21 is made up of a washer 22 and a stopper rubber 23 thereon. The stopper 21 is screwed into the screw hole at the center of the washer 22 and is connected to the stopper rubber 23.
The height can be adjusted by inserting it into the center hole of.

A bearing plate 24 is fixed to each of the outer sides of the holding frame 15 slightly inward of each of the posts 16. 25
Is a collapsible stopper post whose lower end is rotatably mounted between bearing plates 24 by means of a shaft 26.

As shown in FIGS. 2 and 3, the bearing plate 24 is lower on the right side and higher on the left side, as in FIGS. Then, the stopper post 25 is longer on the right side and shorter on the left side so that the stopper post 25 has the same height when it is erected vertically.

A locking pin 20 and a stopper 21 similar to the fixed stopper post 16 are also provided at the upper end of each post 25.
However, since the structure of this portion is the same as that of the post 16, the same reference numerals are given and the detailed description is omitted.

Also, as shown in FIGS. 4, 7, and 8, support pieces 29 are provided on a part of the opposing side of each of the foldable stopper posts 25 belonging to the same holding frame 15, and An upper end of the stay 30 is rotatably connected to the piece 29 by a shaft 31. A boss 32 is fixed to the lower end of each of the stays 30, and each boss 32 is movably fitted into the holding frame 15.

Each stay 30 is provided on both sides of each holding frame 15.
Each guide elongated hole 33 is formed, and as shown in FIG. 9, both ends of the lateral moving shaft 34 are inserted into a rubber bush 35 which is movably inserted into each elongated hole 33, and the insertion hole of the boss 32 is inserted. A C-shaped or E-shaped retaining ring 36 for preventing the shaft 34 from moving in the axial direction is attached to the circumferential groove provided on the shaft 34.

The lower part of the outer end of each slot 33 is shown in FIGS.
As shown in FIGS. 3, 7, 8, and 9, when the post 25 is vertically erected, the moving shaft 34 at the lower end of the stay 30 is formed as shown in FIG. 3, FIG. 7, FIG. Both ends fall into the locking portion 37 to fix the stay 30, and the post 25
Will stop falling.

Further, as shown in FIG. 8, a screw hole 3 is formed in the fixed stopper post 16 on the tiltable stopper post 25 side.
8 and an adjusting bolt 39 screwed into the screw hole 38.
Is passed through the insertion hole provided on the opposite side of the screw hole 37 to project outside the post 16, and the handle 40 is fixed to the end of the post.

When the adjustment bolt 39 is rotated by the handle 40, the bolt 39 moves forward and backward. The length of the stay 30 can also be freely adjusted, so that the moving shaft 34 at the lower end of the stay 30 falls into the locking portion 37,
When the end of the bolt 39 is in contact with the stopper post 25, the post 25 is vertical and the upper end is adjusted so that the locking pin 20 fits into each of the engagement holes 11 of the portable stage 4.

Reference numeral 41 in FIGS. 2 and 3 denotes a shorter retractable post receiver, which is fixed in the holding frame 15 and protrudes above the holding frame 15. Reference numeral 42 denotes a receiving plate made of a single thin plate, which is fixed on the holding frame 15 and receives the longer stopper post 25.

In the above embodiment, as shown in FIG. 2, the longer retractable stopper post 25 is first tilted and supported by the receiving plate 42, and then the shorter retractable stopper post 25 is tilted to receive the tiltable post receiver. When supported by 41, both posts 25 are supported vertically without interfering with each other. At this time, the moving shaft 34 at the end of each stay 30 also moves in the guide elongated hole 33 toward the inner end. I have.

At this time, the locking pin 20 at the upper end of each fixed stopper post 16 is engaged with the outer engaging hole 10, and the portable stage 4 is supported by the stopper 21. And match.

When the portable stage 4 becomes necessary, the lid 13 fitted to each window 12 of the stage 4 is removed to expose the suspension ring 14. Next, the hooks at the lower ends of four hoisting ropes suspended from four hoisting machines provided on the ceiling of the hall are engaged with the hoisting rings 14, and each of the ropes is hoisted to move the portable stage 4. Lift to the specified height.

In this state, the respective retractable stopper posts 25 are raised up by hand and supported by the adjusting bolts 39, and at the same time, the moving shafts 34 at the lower ends of the respective stays 30 pulled up.
Each post 25 is held vertically by moving inside the long hole 33 and falling into the locking portion 37.

Next, each lifting rope is rewound, the portable stage 4 is gradually lowered, and the engaging pin 2 at the upper end of the retractable stopper post 25 is inserted into each engaging hole 11 on the lower side of the stage 4.
When the portable stage 4 is supported by the stoppers 21 and the portable stage 4 is supported by the stoppers 21, the portable stage 4 has a fixed height on the floor plate 2 and functions as a stage.

In the above embodiment, the four corners on the lower surface of the portable stage are supported by stopper posts. In the case of a large portable stage, not only the four corners but also the middle part is fixed and the stopper stopper is tiltable. In some cases, it is supported.

[0030]

[Effect] In the present invention, the portable stage can be stored in the opening provided on the floor immediately below the portable stage as described above. It becomes unnecessary.

In addition, during storage, the floor surface of the portable stage and the floor surface of the hall are supported by the fixed stopper post and are flush with each other, so that the portable stage serves as a lid for the opening. The stage can be lifted and lowered by a hoisting machine above the hall, and the operation can be performed by a smaller number of people as compared with the conventional portable stage, since the operator only has to raise or lower the retractable stopper post.

[Brief description of the drawings]

FIG. 1 is a plan view of an embodiment.

FIG. 2 is a longitudinal sectional view taken along the line AA of FIG. 1;

FIG. 3 is a vertical cross-sectional view of the same location when the portable stage is lifted.

FIG. 4 is a vertical sectional view taken along line BB of FIG. 3;

FIG. 5 is an enlarged vertical sectional view taken along the line CC of FIG. 1;

FIG. 6 is an enlarged vertical sectional view taken along the line DD of FIG. 1;

FIG. 7 is an enlarged side view of a stopper post.

FIG. 8 is a longitudinal sectional side view in which main parts of the above are further enlarged.

9 is an enlarged cross-sectional view taken along the line EE of FIG. 8;

[Explanation of symbols]

 2 Floor 3 Opening 4 Portable stage 10 Engagement hole 11 Engagement hole 16 Fixed stopper post 20 Locking pin 21 Stopper 25 Retractable stopper post

Claims (1)

(57) [Scope of request for utility model registration] An opening is provided in a part of a floor, and a detachable portable stage having a shape adapted to the opening is provided,
At a plurality of locations near the periphery of the lower portion of the opening, locking pins for engaging with a plurality of engagement holes at the periphery of the lower surface of the portable stage fitted in the opening are provided at the upper end. Fixed stopper posts each having a stopper for holding the floor and the floor on the same surface, and near each of the fixed stopper posts, when standing up, an engagement hole different from the engagement hole on the lower surface of the portable stage. A portable stage holding device provided with a movable stopper post having a stopper pin at an upper end for engaging with the movable stage and having a stopper for holding the portable stage at a position higher than the floor.