JPH01187268A - Foldable power stage device - Google Patents

Abstract

PURPOSE:To save energy for expansion operation by fixing base end sections of slidable oscillating arm mechanisms on output shafts of geared motors, having tip sections supported by another stages respectively and housing the motors and the arm mechanisms in the folded section of the stage. CONSTITUTION:A pair of two bodies of movable stage bodies S1 and S2 are coupled with coupling links 11 and 11A so that they are unfoldable in vertical and horizontal level, and forward and reverse rotatable geared motors M1 and M2 for moving stage bodies S1 and S2 are mounted to the stage bodies S1 and S2 respectively. Base end sections of slidable oscillating arm mechanisms Y1 and Y2 are fixed on output shafts 12 and 12A of geared motors to have their tip sections support by another stage bodies S1 and S2 so that the motors M1 and M2 and the arm mechanisms Y1 and Y2 can be housed between two folded bodies of the stage bodes S1 and S2. Accordingly, a stage device having adequate depth can be easily constituted.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a foldable electric stage device,
Relatively low ceiling heights, for example, ceiling heights of about 3 to 4 meters, such as classrooms, play rooms, and assembly rooms in kindergartens, nursery schools, etc., or assembly rooms, conference rooms, and large halls in hotels, inns, etc. Even if the space is small, you can easily construct a stage device with sufficient depth without being restricted by it, and when not in use, it can be folded vertically and used in this type of room. The auditorium has a sufficient ceiling height so that it can be stored neatly in a folded state near a wall or in a dedicated hangar where it won't get in the way.
Even in places such as gymnasiums, martial arts halls, etc., or outdoors, the foldable stage can be freely deployed anywhere indoors or outdoors without being restricted by special guide supports, and can be used as an indoor stage or outdoor stage. It is suitable to have it as a facility.

(Own Prior Art I) Previously, the present inventor established and fixed a guide post against a wall in a room, in Japanese Utility Model Publication No. 60-25482 and Japanese Utility Model Application Publication No. 61-16200, etc. The rear part of the stage body is supported by a weight balance mechanism so that it can be raised and lowered along the front part of the stage body, and transfer wheels that move on the indoor floor are rotatably supported at the front part of the stage body. High floor type that can be folded freely,
We have put into practical use two types of relatively simple stage devices of a low-floor type that use simply fixed stage legs, and with these, we can store and support the horizontal stage main body in an upright position near a wall, and also store and support it in an upright position. The main body of the stage is folded down and deployed onto the indoor floor, thereby contributing to the effective use of the indoor floor.

(Problem 1 with respect to the prior art that the invention seeks to solve) However, in the case of these stage devices, guide supports are always required when the stage body is unfolded or retracted. Therefore, there are restrictions on the location of the stage,
Therefore, it has not been possible to easily configure an indoor stage or an outdoor stage anywhere indoors or outdoors.

Furthermore, the length of the stage floor in the front and rear directions is limited by the height of the guide support, so in indoor spaces with relatively low ceiling heights, such as classrooms and play rooms in schools, kindergartens, nursery schools, etc. In the case of places where the ceiling height is only around 3 to 4 meters, such as meeting rooms, meeting rooms, conference rooms, large halls, etc. in hotels, inns, etc., the ceiling height is also limited by this. We couldn't create a stage with more depth.

(Other people's prior art 2) To achieve this, if multiple sets of "foldable stage structures" as described in Japanese Patent Publication No. 45-30907 are arranged vertically and horizontally, it can be installed in any location and in any size. Assuming that the stage floor can be configured, or that the stage structure can be artificially folded and unfolded vertically, the maximum stage floor is approximately twice the ceiling height of the installation location. It should be possible to obtain a limit.

(Problem 2 with respect to the prior art 2 of others that the invention seeks to solve) However, in the case of this stage structure, it is a link structure that is folded and expanded artificially, and However, it is recognized that the size and weight of the front and rear stage sets can only be handled if they are light and small enough to be moved manually. They have to be artificially unfolded in the vertical and horizontal directions and lined up, and conversely, each set has to be folded again and transported or stored, resulting in a lack of work efficiency.

However, in the case of this stage structure, since it is configured to be folded in half with the foldable stage legs on the outside, it is necessary to adopt a method in which multiple sets of stages are successively arranged in a chain in the longitudinal direction. It's something you can't get.

(Means for Solving the Problems) Therefore, in order to solve the various problems mentioned above, the inventors of the present invention set up a set of high-floor stage or low-floor stage consisting of the front and rear stages in the vertical direction. In addition to being configured to be able to be folded into two or unfolded in the horizontal direction, the stage is further automated to fold vertically and unfold on the floor by electrifying the raising and lowering operation of the bifolding stage. In order to save labor, a pair of stage bodies S1 and S2, which are movable on the floor F, are connected by connecting links 11.11A and 2, which can be folded in half vertically or unfolded horizontally.
3. In the foldable stage device connected by 24, geared motors M1, M, which can freely rotate in forward and reverse directions, are attached to one of the stage bodies S, , S, to move the other stage body 511S, and the geared A swinging arm mechanism Y1, Y that is slidable on the output shaft 12.12A of the motor M1, M.

The proximal end of the stage body S is fixed, and the distal end thereof is attached to the other stage main body S.
1, S, and these geared motors M1, M,
They invented a foldable electric stage device in which a swing arm mechanism YISY2 is housed between two stage bodies s1 and S that are folded in half.

(Example) Below, several examples of the foldable electric stage device according to the present invention will be described. A low-floor type with short legs (or a low stage stand) will be explained separately.

(Regarding the raised floor type stage device) First, in FIGS. 1 and 2 illustrating the first example of the raised floor type, S,...
S is a set of two stage bodies, which are pushed up in the vertical direction so that they can be folded into two, and are butted against each other in the horizontal direction and are arranged facing each other so that they can be expanded freely. If the left and right direction in Fig. 1 is the front and back depth direction of the stage device, one set consists of the first stage S (or acid stage) on the left and the second stage SZ (or rear stage) on the right. It is configured as

In the side view of FIG. 1, a part of the third stage s3 constituting the next set of stage bodies is further shown in a state where it is connected to the right side of the second stage S2.

Reference numeral 1 denotes a stage floor whose upper surface in the stage body S, S3 is formed into a planar rectangular shape, and whose back surface, outer circumferential portion, etc. are fixedly supported by a stage crosspiece 2 constituted by a frame.

Reference numeral 3 denotes a bracket that functions as a fixed leg of a raised type fixed to the stage crosspiece 1, and is directed downward at the intersection of four rows per stage in the left-right width direction and five rows in the front-rear depth direction on the back side of the stage floor-2. It is fixed in a protruding manner.

At this time, the stage crosspiece 2 itself can also function as a fixed leg.

Reference numeral 4 denotes a foldable stage leg, the upper end of which is pivoted to the bracket 3 by means of a connecting pin 5.

6 is a rotatable caster wheel, and stage leg 4
This allows the stage bodies 81 to S3 to move freely in any direction on the floor F of the stage facility.

Reference numeral 7 denotes a connecting rod that extends across the lower ends of the stage legs 4, and extends in the front-rear and depth direction between the lower ends of the front row stage legs 4F and the rear row stage legs 4R, and is connected to the lower ends of the individual stage legs 4. The stage leg 4 is pivotally mounted on a connecting shaft 8 extending perpendicularly to the left and right width direction of the stage leg 4, and the stage leg 4, which is pivoted on the bracket 3, can be freely folded by being moved in parallel while standing vertically. ing.

In the above case, caster wheels 6 are attached to the lower ends of all the stage legs 4, thereby ensuring the ability to turn in any direction on the floor F. , caster wheels 6F' and SR are attached only to the front stage leg 4F and the rearmost stage leg 4R of each stage main body 5l-9s, and the stage leg 4 located between them is equipped with caster wheels 6F' and SR as shown in the second example below. The stage body S1, S may be constructed by attaching appropriate auxiliary legs 9 that are height adjustable, or a set of two stage bodies S1, S facing each other may be constructed.
, the caster wheels 6F may be attached only to the stage legs 4F in the front row, and the other stage legs 4 may be provided with height-adjustable auxiliary legs 9.

Reference numeral 10 denotes a leg reinforcing plate fixed to the stage legs 4 as necessary, and of these, the leg reinforcing plate 10F in the front row is located under the floor of the stage main body 81 to S3 when viewed from the front and rear directions of the stage apparatus. It functions to cover the area.

If this leg reinforcing plate 10 is required, the stage leg 4
It is optional to extend the connecting shaft 8 in the left and right width direction,
On the other hand, if it is essential that the connecting shaft 8 of the stage leg 4 be extended in the left and right width direction, the leg reinforcing plate 10 is optional, and these elements may be combined as appropriate to cope with the situation.

11, IIA is an upper and lower stage 2 that connects the first stage S1 and the second stage S so that they can be folded in half or unfolded in the vertical direction.
It is a connecting link of the body, and is passed between the upper and lower ends of the last row of stage legs 4R in the adjacent first stage S1 and second stage S, and connects the connecting pin 5 and the connecting rod 7 of the stage leg 4R. It is pivoted by a connecting shaft 8.

Incidentally, among the above-mentioned connecting links 11 and IIA, the lower connecting link IIA is arbitrary.

M1 and M are geared motors that can freely rotate in forward and reverse directions, and one of them, M, is for driving the opposing second stage S, and the stage of the second stage S. At a position near the rear of the back of floor-1,
The other geared motor M is fixed to both sides of the stage floor 1 in the left and right width direction, and the other geared motor M is for driving the opposing first stage S, and the stage of the first stage S1. It is fixed at a position near the rear of the back surface of the floor 1 and at both sides of the stage floor 1 in the left and right width direction.

12.12A is the output shaft of the geared motor M1, M, and the output shaft 12.12A is equipped with a torque limiter.
(not shown) is biased and supported.

13.13A is the second stage S, the back side and the first stage S
Bracket 14.14A is a flat (or simply cylindrical) outer duplex with two parallel cylindrical parts, and its base end is connected to the output shaft. 12.It is fitted and fixed to 12A.

15.15A are two parallel inner rods,
The outer tube 14.14A is slidably fitted into and supported by a parallel cylindrical portion, and its tip portion is pivoted to the bracket 13.13A by a connecting pin 16.16A.

This outer tube 14.14A and inner rod 1
5.15A, the second stage S, and the first stage Sl
A swinging arm mechanism Y1, Y is configured to be able to freely slide against the shaft.

17 is a connecting hinge that folds the second stage S and the third stage S3 into two.

In the above case, the swinging arm mechanism YY, which pulls the first stage S and the second stage S together and pushes them up, or pushes them apart and pulls them down, is used as a set of two stage bodies S1 and S. , are arranged symmetrically on both sides of the left and right width direction, but it is also arranged symmetrically at the center position in the left and right width direction,
Alternatively, a swing arm mechanism Y for driving the second stage S,
It is also possible to combine them by disposing a swing arm mechanism Yt for driving the first stage S1 on either one of the stage bodies S1, S, in the left and right width directions, and on the other side.

(Storing action of the stage device) First, two of the stage bodies 81 to S in a horizontal state, which are arranged in a chain and deployed on a flat floor-F, are
In order to vertically push up a set of stage bodies S1, S and fold them into two, a geared motor M1 for driving the second stage S, a geared motor M for driving the first stage S, are simultaneously started in opposite directions, and their output shafts of 12.12A are operated at ultra-low speed, 1/24,000 in a practical machine.
Rotate at a speed reduction ratio of

Then, the output shafts 12.1 of geared motors M1 and M2
The second stage S of the opposing party with 2A as the fulcrum
, a force acts to push down the bracket 13.13A portion of the first stage SI via the slidable swing arm mechanisms Y8 and Y2.

However, since the lower part of that part is grounded on the floor F by the caster wheels 6 via the stage legs 4, the force trying to push it down uses the connecting pins 1B and 16A of the bracket 13.13A as the fulcrum. On the contrary, it acts as a force that pushes up the output shaft 12.12A side of the geared motor M1, M, vertically upward.

As a result, the geared motors M1 and M2 sides of the two stage bodies S+ and St are pushed up, their abutting state is released, and as the abutting portion begins to move up, the bracket 13.13A
A force acts that draws the parts inward toward each other.

Then, the front row caster wheels 6F of the stage main bodies S1, S move relatively backward on the floor -F, and the geared motor M1 of the stage main bodies S1, S moves while reducing the distance between the front row caster wheels 6F. , pushes the M2 side further upward.

In this way, by driving the geared motors M1 and M2, the abutting parts of the stage bodies S1 and S2 are pushed up, folded in half, and pushed vertically upward, and the frontmost parts of the stage bodies S1 and S are moved relatively inward. The force of the pulling force caused the caster wheels 6F in the front row to fall to the floor - F.
The function of moving the upper part relatively backward acts slowly over a relatively long period of time.

At that time, the output shafts 12.1 of geared motors M1 and M2
The distance between the connecting bin 16.16A and the connecting bin 16.16A is expanded and contracted while relatively sliding by a slidable swinging arm mechanism Y1, Y consisting of an outer tube 14.14A and an inner rod 15.15A, At the same time, the first stage sI and the second stage S.

As shown in FIG. 1, the stage legs 4 linked to the lower part of the floor of the stage are vertically erected, and gradually folded in parallel and pulled up vertically.

In this way, one set of front and rear stage bodies 5tSSt is
As shown by the imaginary line in FIG. 1, the first stage S and the second stage S are vertically folded in half to stand upright.

At this time, the output shaft 12.1 of the geared motor M,
2Ali, when the stage body S1, S, is folded in half from a horizontal state to a vertical state, the total length is about 1.
It is oscillated and rotated through a oscillation angle of about 80 degrees.

Next, if there is one or more sets of the next stage bodies S1, S4 connected to the stage bodies S1, S, in a chain, these geared motors M1-M4 can be driven at the same time. , stage body S1, S, and stage body S1
, S4's abutment part is folded in half and pushed up vertically, and the force that tries to pull the frontmost parts of the stage bodies S, , S and the stage bodies S1 and S4 relatively inward makes it possible to move the front row A function for relatively moving the caster wheels 6F backwards on the floor -F, and further,
Connecting hinge 1 connecting two sets of stage bodies 81 to S4
Centered on 7, a function works to relatively pull them toward the folding center, and they act slowly over a relatively long period of time, and as a result, the two sets of stage bodies S
, -S, are vertically folded into four to stand up (not shown).

(Deployment action of stage device) Contrary to the above, the stage main body S folded vertically
1, S, in a horizontal state on the floor -F, the geared motor M1 of the stage main body S8, s2
, M are started simultaneously in the opposite direction to the above, and their output shafts 12.12A are driven at ultra-low speed, that is, at a reduction ratio of 1/24,000, as before.

Then, with this output shaft 12.12A as a fulcrum, the opposing second stage S and the first stage SI, which are in an upright state,
The bracket 13.13A portion is swung so as to be gently pushed apart in the front-rear direction via the slidable swiveling arm mechanism Y1, Y.

Then, the caster wheels 6F at the lower ends of the stage bodies S1, S are gently moved and pushed out in the longitudinal and longitudinal directions on the floor F, and the outer tubes 14.
14A and inner rods 15.15A, the slidable swinging arm mechanisms Y1 and Y extend and contract while sliding relative to each other, thereby making the lower end portions of the stage bodies S1 and S2 relatively long. The stage legs 4, which are folded between the stage bodies S1 and S, are pushed out slowly in both the front and rear directions over time, and are then moved parallel to the vertical direction as shown by the solid line in FIG. Push it out while gradually expanding it.

In this way, as shown in the imaginary line in Figure 1, the first
The stage S and the second stage S are expanded so that they are horizontally butted against each other.

At this time as well, the output shaft 12.1 of the geared motor MSMt
2A, when the stage main bodies S, , S are developed from a vertical state to a horizontal state, they swing and rotate through a swing angle of about 180 degrees, contrary to the above, and return to their original positions.

(Second example of raised floor type) Next, in FIG. 3 showing a second example of the raised floor type, J is a connection joint at the base end of the stage main body 81 to S3, and is a joint in the front row of the first stage Sl. stage legs 4
A bracket IB protruding from F and a bracket 19 protruding from a lower wall W of a stage facility location or a lower wall W of a stage hangar etc. are configured to be removably attached by a connecting pin 20.

Alternatively, a pair of male and female fitting claws may be provided on the stage leg 4F side and the wall surface W side so that they can be fitted freely.

By configuring the connecting joint J on the stage leg 4F side and the wall surface W side in this way, the stage body S connected in a chain,
~S3 can be stored in a predetermined location, or the stage main body S and ~S3 can be folded in the vertical direction and unfolded in the horizontal direction in a stable manner.

In the case of the second example of the high floor type, a geared motor M is attached to the rear back surface of one of the first stage S1 among the two stage bodies S2 and St, and the geared motor M is attached to the output shaft 12 of the stage main body S2, St. The proximal end of the outer tube 14 in the freely swinging arm mechanism Y is fixed, and the distal end of the inner rod 15, which is slidably fitted into the outer tube 14, is attached to the second stage S,
It is configured such that it is pivoted by a connecting pin 16 to a bracket 13 fixed to a bracket 13, and is configured at both ends of the first stage S1 in the left and right width direction, or in a case where it is configured at approximately the center position in the left and right width direction. It shows.

In the case of the first example, the caster wheels 6 are attached to the lower ends of the stage legs 4 in consideration of the turning ability of the stage body 511S on the floor F. If the main purpose is to move the stage main body S1, S in the front and back depth direction without particular need for turning ability at the top, stage legs 4F in the front row and stage legs 4F in the last row are used as shown in Fig. 3. Rotating wheels 21F and 21R that cannot be turned are attached to the lower end of the stage leg 4R, and a suitable auxiliary leg 9 is attached to the stage leg 4 located between them, so that the height can be adjusted freely.

In place of this, a non-swivelable rotary wheel 21 that is movable in the front and back depth directions uses the connecting shaft B in the left-right width direction of the front row stage leg 4F and the last row stage leg 4R as an axle.
F, 21R can be installed, or two stage bodies S1, S! It is also possible to solve this problem by attaching the rotary wheel 21F' only to the stage leg 4F in the front row, and configuring the other stage legs 4 as auxiliary legs 9 whose heights are freely adjustable.

(Regarding low floor type stage device) Next, in Fig. 4 showing a first example of a low floor type stage device, 22
is a fixed stage leg with relatively short legs, and may be a portion corresponding to the fixed leg 3 in a high-floor type stage device or the equivalent stage crosspiece 2 (stage base).

Reference numerals 23 and 24 denote a pair of connecting links that connect the stage bodies S1 and S2.
．． 24 is pivotally installed with a connecting pin 26.

Incidentally, instead of the above-mentioned connecting links 23 and 24, both ends of one connecting link (not shown) are pivoted to the last row of fixed stage legs 22H with connecting pins 25, so that the stage bodies S7, 1 , S2 can be folded in half or butted together.

Furthermore, in the above case, the caster wheels 6 are attached to the lower ends of the fixed stage legs 22, 22F and 22R as shown in FIG. This can be solved by directly attaching the caster wheels 6F, 6R to the bottom surface of the frontmost part and the bottom face of the rearmost part of S8, S, or by directly attaching the caster wheel 6F only to the bottom face of the frontmost part.

The rest of the structure and operation are the same as those of the first example of the raised floor type stage device, so the explanation thereof will be omitted.

(Second example of low floor type) Next, in the second example of the low floor type shown in FIG. , rotating wheels 21F and 211' that move on the floor-F in the front and back depth direction.
(is provided.

In this case, as in the case of the first example of the low-floor type described above, the stage main bodies S1 and S do not require special fixed stage legs 22.22F and 22R.

Fixed wheels 21F, 21 on the bottom of the frontmost part and the bottom of the rearmost part of
This can also be solved by directly attaching R or directly attaching the rotary wheel 21F to the bottom surface of the foremost part.

The rest of the structure and its functions are the same as those of the second example of the raised floor type, so the explanation thereof will be omitted.

(Application example) In addition, the stage main body S of the above-mentioned high floor type and low floor type
1. If judo tatami mats are laid out and fixed in advance on the stage floor 1 surface of ST-1S3, or a wrestling mat or gymnastics mat is laid down, the folding electric stage of the present invention can be realized. The device can be deployed on floor F to create a dedicated stage for judo, wrestling, gymnastics, etc., and can be used easily or folded and stored when not needed. , which is extremely convenient.

In addition, the first surface of the stage floor will be dedicated to Kendo.
A similar effect can be obtained when a buffer structure is configured in advance.

(Effects of the Invention) The present invention provides a link link that connects a pair of stage bodies 5111 and S2, which are movable on the floor F as described above, so that they can be folded in half vertically or unfolded horizontally. 1
1, IIA, 23. In a foldable stage device connected by 24, either one of the stage bodies S
A geared motor M, which can freely rotate in forward and reverse directions to move the other stage main body S0, S, is attached to t, and a swinging arm mechanism Y1 that can freely slide on the output shaft 12.12A of the geared motor M, Mt. , fix the proximal end of Y2,
The tip part is supported by the other stage main body S, , S,
These geared motors M1, M, and swing arm mechanism Y
,,Y2 is two folded stage bodies S1 and S
Since this is a foldable motorized stage device configured to be stored between Even in places with relatively low ceiling heights, such as large halls, etc., for example, only about 3 to 4 meters, the stage equipment with sufficient depth can be used without being restricted by this. Easy to configure.

In addition, when not in use, it can be folded vertically and neatly stored in an unobtrusive wall area in this type of room, or in a dedicated hangar. Even in places such as martial arts halls or outdoors, the foldable stage can be freely expanded anywhere indoors or outdoors without being restricted by special guide supports, and can be used as an indoor or outdoor stage. It is also highly suitable for

However, after configuring a set of high-floor stage or low-floor stage with two front and rear stages that can be folded in half vertically or unfolded by abutting each other horizontally, it is possible to raise and lower the two-fold stage. By electrifying the operation, the stage can be folded in the vertical direction, automating the unfolding operation on the floor, contributing to labor savings, and other benefits.

[Brief explanation of the drawing]

Fig. 1 is a side view showing a first example of a folding motorized stage device of a raised floor type, Fig. 2 is a bottom view thereof, Fig. 3 is a side view showing a second example of a raised floor type, and Fig. 4 is a low floor view. 5 is a side view showing the first example of the type of foldable electric stage device;
The figure is a side view showing a second example of the low floor type. Code Table S1, S2, S3 Stage main body F Floor-W Wall surface M1, M2 Geared motor YY, swinging arm mechanism J Connection joint 1 Stage floor-2 Stage crosspiece 3 Fixed leg 4 Stage leg 5 Connection bin
6 Caster wheels 7 Connecting rod 8
Connection shaft 9 hli support leg 10 Leg reinforcement plate 11 Connection link 12 Output shaft

Claims (6)

[Claims] (1) Connecting links 11, 11A, 23 that can freely fold two stage bodies S_1 and S_2 in the vertical direction or expand them horizontally, making them movable on the floor F.
, 24, geared motors M_1, M_2 capable of forward and reverse rotation are attached to one of the stage bodies S_1, S_2 to move the other stage body S_1, S_2, and the geared motor M_1, The base ends of the swing arm mechanisms Y_1, Y_2 which can be slid freely are fixed to the output shafts 12, 12A of M_2, and the tips thereof are supported by the other stage bodies S_1, S_2, and these geared motors M_1, M_2 A foldable electric stage apparatus characterized in that the swing arm mechanisms Y_1 and Y_2 are housed between two stage bodies S_1 and S_2 folded in half. (2) Connecting links 11, 11A, 23 that can freely fold two stage bodies S_1 and S_2 in the vertical direction or expand them horizontally, making them movable on the floor F.
, 24, geared motors M_1, M_2 capable of forward and reverse rotation are attached to one of the stage bodies S_1, S_2 to move the other stage body S_1, S_2, and the geared motor M_1, The base ends of the swing arm mechanisms Y_1, Y_2 which can be slid freely are fixed to the output shafts 12, 12A of M_2, and the tips thereof are supported by the other stage bodies S_1, S_2, and these geared motors M_1, M_2 and swing arm mechanisms Y_1 and Y_2 are configured to be housed between two stage bodies S_1 and S_2 folded in half, and a stage structure in which the two stage bodies S_1 and S_2 form one set. A foldable electric stage device characterized in that a plurality of sets of the following are connected by a connecting hinge 17. (3) Connecting links 11, 11A, 23 that can freely fold two stage bodies S_1 and S_2 in the vertical direction or expand them horizontally, making them movable on the floor F.
, 24, a geared motor M_1 capable of forward and reverse rotation is attached to the bottom surface of one of the stage bodies S_1, S_2 to pull the other stage body S_1, S_2 up, or to spread them out. Install M_2 and its geared motor M_
1. On the output shafts 12 and 12A of M_2, there are brackets 13 and 13A that support the base ends of slidable swing arm mechanisms Y_1 and Y_2, and whose tips are fixed to the bottom surfaces of the other stage bodies S_1 and S_2. The swing arm mechanisms Y_1 and Y_2 are configured to be slidable by outer tubes 14 and 14A and inner rods 15 and 15A fitted into the outer tubes 14 and 14A, and these geared motors M_1 , M_2 and swing arm mechanism Y_1, Y_
2 is configured to be stored between stage bodies S_1 and S_2 which are folded in half. (4) Connecting links 11, 11A, 23 that can freely fold two stage bodies S_1 and S_2 in the vertical direction or expand them horizontally, making them movable on the floor F.
, 24, a plurality of rows of fixed legs 3 are provided on the bottom surface of the stage bodies S_1 and S_2 in the front-rear depth direction and the left-right width direction,
A stage leg 4 is foldably pivoted to the fixed leg 3 with a connecting pin 5, and a connecting rod 7 extending in the front-back and depth direction is supported by a connecting shaft 8 extending in the left-right width direction at the lower end of the stage leg 4. Among them, caster wheels 6 or rotating wheels 21F are attached to at least the front row stage legs 4F, and either one of the stage bodies S_1, S_
2 are equipped with geared motors M_1 and M_2 that can freely rotate in forward and reverse directions to pull the other stage bodies S_1 and S_2 up, or to spread them apart.The output shafts 12 and 12A of the geared motors M_1 and M_2 are The base end portions of the movable swinging arm mechanisms Y_1 and Y_2 are supported, and the tip portions are connected to the other stage bodies S_1 and S_2.
The swing arm mechanisms Y_1 and Y_2 are supported by brackets 13 and 13A fixed to the bottom of the outer tube 14.
, 14A and inner rods 15, 15A fitted into the outer tubes 14, 14A to be slidable,
A folding device characterized in that the geared motors M_1, M_2, the swinging arm mechanisms Y_1, Y_2, and the stage legs 4, 4F are stored and folded between the bifold stage bodies S_1, S_2. electric stage device. (5) Connecting links 11, 11A, 23 that can freely fold two stage bodies S_1 and S_2, which are movable on the floor F, in two vertically or expand horizontally
, 24, fixed stage legs 22 are provided on the bottom surfaces of the stage bodies S_1 and S_2, and among the fixed stage legs 22, at least the front row stage leg 22F is equipped with caster wheels 6 or rotating wheels. Attach the wheels 21F or move the stage body S
Caster wheels 6 or rotary wheels 21F are attached to the bottoms of the frontmost parts of _1 and S_2, and the other stage main body S_1 is attached to the bottom of either one of the stage bodies S_1 and S_2.
, Attach geared motors M_1 and M_2 that can freely rotate forward and backward to pull S_2 up, push it out, and spread it out.
Output shafts 12, 1 of the geared motors M_1, M_2
2A supports the base end portions of the slidable swing arm mechanisms Y_1 and Y_2, and the tip portions are attached to the other stage main body S.
Brackets 13 and 13A fixed to the bottom of _1 and S_2
The swing arm mechanisms Y_1, Y_2 are supported by the outer tubes 14, 14A and the outer tubes 14, 1.
The geared motors M_1, M_2 and swing arm mechanisms Y_1, Y_2, etc. are housed between the folded stage bodies S_1, S_2. A foldable electric stage device characterized in that it is configured to be (6) Connecting links 11, 11A, 23 that can freely fold two stage bodies S_1 and S_2 in the vertical direction or expand them horizontally, making them movable on the floor F.
, 24, the stage bodies S_1 and S_2 are formed into a floor structure for judo, wrestling, gymnastics, kendo, etc., and one of the stage bodies S_1 and S_2 is connected to the other. Geared motors M_1 and M_2 that can freely rotate forward and backward to move the stage bodies S_1 and S_2 of fixed, and its tip supported by the other stage main body S_1, S_2,
A foldable electric stage device characterized in that the geared motors M_1, M_2 and swing arm mechanisms Y_1, Y_2 are housed between two stage bodies S_1, S_2 folded in half.