JPS6229678A - Freely extensible floor structure - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a retractable floor structure.

[Conventional technology]

In recent years, in order to use the interior of gymnasiums for multiple purposes, it has become common to install a retractable floor structure A as shown in FIG. 7 on a part of the floor near the wall. This floor structure A is constructed by interconnecting each movable floor platform 5 from the first movable floor platform 5, + to the last movable floor platform 5, 6 in a plurality of stages that increase in height. , is formed so that it can be moved by expansion and contraction in the front and rear directions. And this floor structure A
When in use, the movable floor table 5.1 is pulled out sequentially from the lowest and foremost movable bed table 5.1, and the entire structure is extended into a pedestal shape. It can be used as a bleacher seating area for spectators. Furthermore, when the above-mentioned connected chairs (not shown) are folded in an inverted manner, each movable platform 5 is individually flattened, and the above-mentioned movable platform 5 is used for exhibitions, sculpture exhibitions, etc. It can be used for multiple purposes as a display stand for product exhibitions, sales events, fashion shows, etc. Furthermore, when the floor structure as described above is not used, the connected chairs (not shown) of each stage are folded, and each movable floor base 5 is moved to the front stage movable base 5. Starting from +, the last stage of the movable platform 5. By moving it backwards so as to return it to below G, the entire structure is reduced to a vertical shelf under the last movable platform 5.6, and is thereby stored in a storage recess (not shown) provided on the wall side of the building. It was designed so that it could be stored.

[One problem to be solved by the invention] Due to the above-mentioned configuration, the conventional expandable floor structure has the following problems.

(1) When used in a floor structure, the movable floor platform 5 at each stage
Since the amount of drawers is constant, when the above-mentioned floor structure A is used as the above-mentioned exhibition stand, there is little change in each stage, making it difficult to display a variety of exhibits.

(2) Furthermore, even if an attempt was made to use the above-mentioned floor structure A for purposes other than the above-mentioned viewing seats and exhibition stands by taking advantage of its elasticity, this could not be realized due to the limited amount of drawers.

[Means for solving problems]

This invention solves the above-mentioned problems of the prior art, and allows the amount of pull-out of each movable platform to be set individually for each stage, thereby changing the amount of pull-out of each movable platform depending on the purpose. The purpose of the present invention is to provide a retractable floor structure that can hold various exhibitions and be used for purposes other than viewing seats and exhibition stands.

The feature of this invention is that a plurality of movable floor platforms assembled by having rollers at the bottom and supporting columns at the top and connecting a pair of left and right bases by a horizontal beam can be used in this invention. According to the above, in a floor structure in which the interval between the bases and the height of the pillars are different for each movable floor platform, the whole can be extended like a dais when used in combination to enable sequential nested storage. An expansion/contraction amount conversion device whose one end changes the position from the rear part of this column to the front part of each column adjacent to the outside of each position is placed at the rear part of the column corresponding to each adjacent inner position, and each movable platform according to the above is The reason is that the depth dimension can be adjusted.

[Effect]

When the floor structure having the above structure is used as a normal spectator seat using chairs, the entire structure can be extended into a 1/2-mm shape by sequentially pulling out the movable platform at the lowest and foremost stage. Although not shown, by raising the connected folding chairs on each tier in conjunction with the above-mentioned drawers, each chair can be seated by a large number of spectators, and can be used as a uniform viewing seat. It is something. In addition, when using the above floor structure as an exhibition stand, first pull out each of the above movable floor stands, which are stored in a flat state by folding the connected chairs (not shown) upside down and making them flat individually. When the expansion/contraction conversion device for each base is activated by setting the withdrawal amount for each step as planned in advance, one end of the expansion/contraction conversion device placed between each adjacent column will move from the rear of the inner column. Since each position protrudes to the front of the adjacent outer support, by retracting each of the above movable platforms at this point,
Each movable platform is regulated by the expansion/contraction amount converting device immediately below, so that each movable platform stops with a preset individual depth dimension remaining. Therefore, it is possible to realize a variety of exhibitions by changing each of the above-mentioned movable floor stands into display stands with an optimal pull-out amount according to the purpose. Furthermore, after using the above-mentioned floor structure, with the connected chairs (not shown) in each tier folded, the main parts of the expansion/contraction amount converting device between each column are returned to their original state, and then the By moving backwards from the first stage of the movable base to the bottom of the last stage of the movable base, the entire structure is reduced to a vertical shelf under the last stage of the movable base, so that the whole is attached to the wall of the building. It can be stored in a storage recess (not shown) provided on the side.

〔Example〕

Embodiments of the present invention will be described below with reference to the accompanying drawings.

1 to 3 show a first embodiment of the present invention. First, to explain the configuration, when in use, the entire floor structure A is moved from a storage recess (not shown) on the rear wall side to the floor surface in front C, and when not in use, it is moved from this floor surface to the rear N.
A roller 2 is provided at the bottom so that it can be moved into a storage recess (not shown), and a support 3.1 is installed at the top of each stage, for example, in the case of the movable platform 5.1 in the front stage I, Floor stand 5. On the movable platform 5.2 of the next stage ■ adjacent to the Base 1.1
In the movable platform 5.2 of the next stage ■ adjacent to the outside edge of the base 1.2), the horizontal beam 4.1 (of the next stage ■ adjacent to the outside edge of the base 1.1) In the movable floor platform 5.2, a similar base is omitted due to graphical reasons.
The above movable bed platform 5. +, base 1 in 5.2. +
, 1.2 spacing and struts 3. +, 3.2
are formed to have different heights, and each adjacent base 1
, +, 1.2... At the front end of the base 1.2... corresponding to each outer position in 1.2..., this outer base 1.2...
・From the base 1.1 adjacent to the inside E for each position...
When in use, the movable floor stand 5.1 in the frontmost stage is assembled so that it can be expanded and contracted by protruding the locking tool 6 of the band-shaped plate toward the front of the support column 3.1. By sequentially pulling it out from r, as shown in Fig. 2, the ■ side locking tool 6 protrudes and locks onto the front part of the ■ side column 3.1, and from this point on, the next step ■ is moved. The floor stand 5.2 also moves forward in a cooperative manner, so that the entire body extends one after another into a pedestal shape, and when not in use, contrary to the above, the movable floor stand 5. 5. Moving platform from + to the last stage ■.
6. Move it back down to the adjacent column 3. +, 3.2
... between which the beam 4.1 connected to the inner E column 3.1 is connected to this column 3.1. Post 3 adjacent to the outside edge of +
．． 2, the entire floor structure A is concentrated and retreated one after another in the same way as in the past, and finally the entire structure is brought together under a vertical shelf-like reduction body, and the entire floor structure A in this state is then In the floor structure that can be stored in the original storage recess (not shown) on the other side, the adjacent support column 3. +, 3.2, . . . , the following expansion/contraction amount converting device B is provided on the base 1.1, which corresponds to the inner E position in FIG. 2.

The expansion/contraction amount conversion device B described above is configured as follows.

That is, base 1, which corresponds to the inside E position in the above. At the top, the motor 7 is mounted horizontally facing backwards at the rear of the support column 3.1 at this position. The output shaft of this motor 7 is
It is loosely inserted into a bearing-shaped support plate 9 fixed behind it. On the output shaft of the motor 7 located immediately in front of the support plate 9, a locking body 8 in the form of a rectangular cube is fitted with a lower hole (not shown) and locked with a key, so that the output shaft of the motor 7 can be fixed when the motor 7 is driven in the forward or reverse direction. The upper part of one end of the pillar 3.2 is integrally fitted with a shaft so that the position of the upper part of the pillar 3.2 can be changed by raising and lowering the pillar 3.2. Expansion/contraction amount conversion device B according to this aspect
When the floor structure A is used as an exhibition stand, the locking bodies 8 are set so that their installation positions are different depending on the depth dimension of the movable floor stand 5 in the drawer-remaining state at each position planned in advance. ing.

Both pillars adjacent to each other due to the above 3. + , each column with the same combination of arrangement as in 3.2 (i.e., each stage ■ and n, which will be adjacent in the front and rear positions when the floor structure A is extended)
n and m, m and IV, TV and V, V and The above-mentioned expansion/contraction amount converting devices B are provided in a similar arrangement on the bases (bases 1, 1 in FIG. 2) corresponding to the inner E positions of both pillars (not shown).

Therefore, when using the floor structure A as an exhibition stand, for example, after the floor structure A is pulled out, each of the above-mentioned locking bodies 8 is driven by each motor 7 for each stage.
By tilting down the base toward the adjacent outer side, each stage r, n is lowered when retreating to the floor structure.

The configuration is such that the depth dimensions depending on the pulled-out state of the movable bed 5 in m, rv, v, and vr can be individually set as described above.

In this case, by keeping the total expansion/contraction amount converting device B (7) motor 17 installed at each stage in a non-driving state, all the movable floor platforms S (sanat) in the floor structure A can be moved. +,
5.2...5.6), when the beams are retracted, the beams connected to the adjacent inner E pillars contact the outer pillars at each position (in Fig. 2, the I side pillars 3 (while the + beam 4.+ is in contact with the ■ side column 3.2), the beam 4. It is constructed so that it can be stored. In addition, the above I side cutaneous column 3.1
When the beam 4.1 of 1 is retracted with the lateral column 3.2, the beam 4, + connected to the column 3.1 of I and the column 3.2 of Since the height position is different from that of a similar beam (not shown), it continues to move backward to the final position while being positioned on the same perpendicular line due to the vertical arrangement without overlapping. It is constructed so that it can be stored in the form of a vertical shelf under the movable platform 5.6 in the last stage (3).

5. Movable platform for each stage above. +, 5.2...
5.6 each base 1.1. 1.2... (the base of 5, is not shown) is the movable platform 5. for each position. +,
5.2...5.6 are arranged gradually in the outward direction in proportion to the height of the step. Therefore, as partially shown in FIG. 2, the base 1.2 of the next stage ■ is arranged on the outside of the base 1.1 of the front stage I, and in this order the base (not shown) of the last stage ■ The platform is placed in the maximum outward direction.

When the floor structure A according to the first embodiment is used as a spectator seat using chairs (not shown), a separate cooperative transmission device etc. ( By sequentially drawing out the driving force of (not shown),
All stages I to ■ movable floor stand 5, +, 5.2...5.
6 can be extended into a pedestal shape. At that time, although not shown in the drawings, the connected folding chairs (not shown in the drawings) on each stage are erected in conjunction with the drawers of each movable platform 5 as described above, so that each audience member can sit on each chair. This allows the entire area to be used as a single viewing seat. At this time, all the movable platforms 5 are pulled out to a uniform maximum depth dimension Gn.

In addition, if the above-mentioned floor structure A is used as an exhibition stand without using the above-mentioned chairs, each of the above-mentioned structures is stored by folding the connected chairs (not shown) inverted toward the rear and flattening them individually. The movable floor structure 5 is once pulled out one after another using the driving force of a separate cooperative transmission device (not shown), and the floor structure A is extended into eight platforms, and then installed at each stage. Drive each motor 7 of the expansion/contraction amount converting device B, and tilt the locking body 8 at each position to the base side adjacent to each outer side (the base 1.2 side in Fig. 2). Te(to)
Once pulled out, each movable bed 5 is connected to the above-mentioned transmission device, etc. (
When the floor structure A is moved backward using the reverse driving force of the ) The respective locking bodies 8 of the expansion/contraction amount converting device B disposed at positions 1 and 2 make it impossible to retreat beyond this position. Therefore, the movable floor platform 5. + is to ensure a depth dimension equivalent to the remaining amount in the pulled out state, which is the distance between this ■ side skin pillar 3.1 and the ■ side skin pillar 3.2 at this point when the above-mentioned locking body 8 comes into contact. I can do it. In this way, the depth dimension of each of the movable floor platforms 5 of all stages I to ■ is changed to the optimum amount of drawer for each stage according to the purpose, and the entire structure is shown in Fig. 6. For example, the display table can be shaped into a variety of display stands that vary depending on the depth dimension Go when the remaining amount is 0, the depth dimension Gl when the remaining amount is a little, the depth dimension G when the entire amount is the remaining amount, etc. This display stand can be widely and effectively used for exhibitions, sculpture exhibitions, product exhibitions, spot sales, fashion shows, etc.

Furthermore, when storing the above-mentioned floor structure A after use, the locking body 8 of the expansion/contraction amount converting device B in each stage is erected with the connected chairs (not shown) in each stage folded. After this release of the previous locking state, the floor structure A is sequentially moved from the movable floor platform 5.1 in the front stage I to the movable floor platform 5.
For example, if the second
As shown in the figure, the beam 4.1, which is connected horizontally to the column 3.1 of the front stage I, is also connected to the column 3.1 of the front stage I. + Retired in unison with both pillars 3. When the beams 4.+ and 3.2 are adjacent in parallel, the beam 4. + will come into contact with the pillar 3.2 on the ■ side. Therefore, from this point on, the movable platform 5.2 of the next stage ■ also moves to the movable platform 5.2 directly below it. It is possible to leave work as one unit while in the above position. In this way, all of the movable floor platforms 5 are reduced to a vertical shelf shape under the movable floor platforms 5 and e of the last stage (2), so that the entire floor structure A is installed on the wall side of the building (not shown). It can be stored smoothly and easily and reliably in the storage recess.

Although not shown, the above-mentioned floor structure A includes each movable floor platform 5.
Since the depth dimension with the remaining amount of drawers can be set arbitrarily depending on the installation position of the locking body 8, for example, this floor structure A
When the width is formed into a staircase shape with a narrow width, only the movable floor base 5 at the mid-height position is set to the maximum depth dimension, and the other movable floor bases 5 are set to the optimal depth dimension for the stairs. Then, a ramp is formed with the above-mentioned midway point as a landing,
This has the advantage that the floor structure A can be used as a ramp for getting on and off a ship or aircraft.

FIG. 4 shows a second embodiment of the invention. In this second embodiment, in the floor structure A under exactly the same preconditions as shown in the first embodiment (i.e., component conditions other than the expansion/contraction amount conversion device B shown in the first embodiment), adjacent Each rear part of a column (e.g. column 3.3 shown in Figure 4)
, 3.4 each rear part), and in this figure 4 the column 3.3
, 3.4, an expansion/contraction amount converting device B shown below is provided on the base 1.3 at the inside E position. This expansion/contraction amount conversion device B is configured as follows. That is, on the base 1.3 corresponding to the inside E position mentioned above, bearing plates 11°1 are attached to the upper and lower parts of the rear longitudinal surface of the column 3.3 at this position.
2 are installed facing each other. In addition, a rectangular base plate 1 is attached to the rear vertical surface of the support column 3.3, which is located directly below the upper part.
3 is fixed in a horizontal position facing backward. A vertical shaft 15 is rotatably inserted from the upper bearing plate 11 to the lower end beyond the base plate 13 and the lower bearing plate 12. The above base plate 13 has a bevel gear 1 on the output shaft.
A motor 14 with a motor 6 fitted on the shaft is mounted in a horizontal position facing forward. In this case, a similar bevel gear 17 is fitted onto the vertical shaft 15 near the bevel gear 16, and the meshing of both bevel gears 16 and 17 causes the vertical shaft 15 to rotate in conjunction when the motor 14 is driven. ing. At the lower end of the vertical shaft 15, a curved piece 19 is provided at the tip of the square timber shape and protrudes toward the front of the adjacent support column 3.4 erected on the base 1.4 on the outside. The arm 18 is pivotally fitted so as to be able to pivot integrally toward the rear N side from a horizontal position with the arm 18 facing inward E. When the floor structure A is used as an exhibition stand, the arm 18 of the expansion/contraction amount converting device B according to this embodiment has a depth dimension determined by the drawer amount F corresponding to the remaining drawer of the movable floor stand 5 at each position planned in advance. They are formed to have different lengths. In this case, the above-mentioned withdrawal amount F is set smaller than the depth dimension Gn corresponding to the total amount of withdrawal of each movable bed 5. In other words, the relationship is F x Gn. Note that both adjacent pillars 3.3, 3
．． 4 is attached at one end to both stages 111.4 shown in FIG. A floor plate 10 on each side belongs to each mobile platform 5.3, 5.4 (see FIG. 1) of the IV.

In this second embodiment as well, when the expansion/contraction amount converting device B is operated, the depth dimension of the movable platform 5.3 in stage (1) can be left in the same amount as the above-mentioned withdrawal amount F, and the above-mentioned device B
When not in operation, the movable platform 5.3 is configured to have a depth that does not have any remaining amount.

When the floor structure A according to the second embodiment is used as a spectator seat using chairs (not shown), as in the first embodiment, a separate By sequentially pulling out the driving force of a cooperative transmission device etc. (not shown), all stages I to ■ of the movable platform 5.1,
5.2...5.6 can be extended into a pedestal shape.

(See FIG. 1) If the above-mentioned floor structure A is used as an exhibition stand without the above-mentioned chairs, each movable floor stand 5 in the retracted state is are sequentially pulled out using the driving force of a separate cooperative transmission device (not shown) to extend the floor structure A into a dais-like shape, and then the expansion/contraction amount converting device B installed at each stage is used.
Once each motor 14 is driven and the arm 18 at each position is changed by swinging to the base side adjacent to each outer side (the base 1.4 side in FIG. 4), When the floor structure A is retracted by the reverse driving force of the above-mentioned transmission device (not shown), each of the movable floor platforms 5 that have been pulled out is moved from the adjacent base. The arms 18 of the expansion/contraction conversion device B located at the rear of each of the upper pillars (at the rear of 3.33.4 in Figure 4) make it impossible to retreat beyond this position. 5, the depth dimension of the remaining drawer can be secured by the drawer amount F for each position.

In this way, the depth dimension of each movable floor platform 5 of all stages I to ■ is changed according to the optimal pullout amount F for each stage according to the purpose, and the entire floor structure A is constructed as shown in FIG. It can be effectively used as a variety of display stands with a wide variety as shown.

Furthermore, the case where the above-described floor structure A is stored after use is the same as in the above-described first embodiment.

That is, after returning the arm 1B of the expansion/contraction amount converting device B at each stage to its original state and releasing the previous locking state, the floor structure A is moved to the movable floor platform 5 of the foremost stage I, contrary to the above-mentioned pulling out. .Sequentially from 1 to the last stage ■, the movable platform 5. By moving all the movable platforms 5 backward in the downward direction, all the movable platforms 5 are moved to the last movable platform 5. It can be smoothly and reliably stored in a storage recess (not shown) in a state in which it is reduced to a vertical shelf shape under θ.

Although not shown in the drawings, in the second embodiment as well, the depth dimension defined by the remaining amount of drawers of each movable bed 5 can be arbitrarily set depending on the length of each arm 18. When only the movable floor platform 5 is set to the maximum waist depth dimension, and the other movable floor platforms 5 are set to the optimal depth dimension for the stairs, a ramp is formed with the above-mentioned midway part as a landing, and the floor There are advantages such as the ability to use the structure A as a ramp for getting on and off a ship or aircraft.

FIG. 5 shows a third embodiment of the invention. In this third embodiment, in the floor structure A under exactly the same preconditions as shown in each of the above-mentioned embodiments (i.e., component conditions other than the expansion/contraction amount conversion device B shown in both embodiments), adjacent Each rear part of a column (e.g. column 3.s shown in FIG.
, 3.4) is equipped with the following expansion/contraction amount conversion device B.

The expansion/contraction amount converting device B in this third embodiment is most suitable for the floor structure A in which the motor serving as the driving body cannot be placed in the vicinity of each of the above-mentioned columns.

The expansion/contraction amount converting device B in this third embodiment is configured as follows. That is, first, at each rear part of the pillar (rear parts of 3.3 and 3.- in FIG. 5), a horizontal member 27 with a length extending between the left and right pillars is installed as a base for each position (1 in FIG. 5).
．． 3. 1.4) are connected by some height arrangement close to 1.4). Each horizontal member 27 as described above is equipped with an expansion/contraction amount converting device B shown below at each adjacent support column 3.
It is installed between 3 and 3.4. That is, the motor 20 is connected to the cross member 27, which is connected to the cross member 27, for example at a distance from the support post 3.3.
It is installed horizontally with the output shaft facing toward the side. Further, a speed reducer 23 is directly connected to the pillar 3.3<II adjacent to the motor 20 so as to be able to reduce the speed in a cooperative manner using the cross member 27 as a support. Next, near the end of the crosspiece 27 in this embodiment located outside of the column 3.3, there is an arm 22 having a length extending from the crosspiece 27 to the adjacent rear column 3.4 at its proximal end. The bifurcated portions are connected to each other so as to be swingable in the inner E direction by inserting the support shaft 26 into the cross member 27.

A curved piece 24 is attached to the tip of this arm 22 so that it can come into contact with the rear strut 3.4 described above. The tip of a link mechanism 21 whose base end side is swingably connected to the speed reducer 23 via a driving shaft 25 is inserted into this arm 22 with a pin or the like, so that when the link is expanded and contracted by the link operation, The arm 22 is arranged so as to be able to change its position by swinging from a state where it is housed in parallel on the side of the cross member 27 about the support shaft 26 to the side of the adjacent base 1.4.

In this third embodiment as well, when the expansion/contraction amount converting device B is operated, the depth dimension of the movable platform 5.3 in the stage (3) can be set to the same amount as the above-mentioned withdrawal amount F, and the above-mentioned device B
When not in operation, the movable platform 5.3 is configured to have a depth that does not have any remaining amount.

When the floor structure A according to the third embodiment is used as a spectator seat using chairs (not shown), separate cooperation is required from the movable floor platform 5 of the front stage I, as in each of the embodiments described above. All stages 1 to 5 of the movable platform 5. +,
5.2...5.6 can be extended into a pedestal shape.

In addition, when the above-mentioned floor structure A is used as an exhibition stand without using the above-mentioned chairs, similarly to each of the above-mentioned embodiments, each movable floor stand 5 in the retracted state can be moved by a separate cooperative system. After the floor structure A is extended into a dais by sequentially pulling it out using the driving force of a transmission device (not shown), each motor 20 of the expansion/contraction amount converting device B installed at each stage is moved.
When the motor 20 drives the reducer 23, the drive force of the motor 20 rotates the reducer 23 in one direction.
1 expands from the contracted state shown by the solid line in the outward direction shown by the imaginary line using the driving shaft 25 as a fulcrum.

Therefore, the arm 22 connected to the distal end side of the link mechanism 21 is moved to the support shaft 22 by the extension operation of the link mechanism 21.
The position will be oscillatingly changed on the adjacent base 1.4 with .

Due to the above, Itf! 22 is moved to the adjacent base side for each position, each movable floor base 5 is pulled out once,
When the floor structure A is moved backward by the reverse driving force of the above-mentioned transmission device (not shown), the movable floor platform 5 of each stage I to ■ expands and contracts at each stage that protrudes above the adjacent base. It becomes impossible for each arm 22 of the amount converting device B to retreat beyond this position, and as a result, each movable platform 5 can be pulled out by the amount F for each step.
The depth dimension of the remaining drawer can be secured. In this way, each of the movable floor tables 5 of all stages ■ to ■
By changing the depth dimension according to the optimal drawer amount F for each stage according to the purpose, the entire floor structure A can be effectively used as a versatile display stand with a variety of variations as shown in Figure 6. be able to.

Furthermore, the case where the above-described floor structure A is stored after use is the same as in each of the above-described embodiments. That is, after the arm 22 of the expansion/contraction amount conversion device B at each stage is returned to its original state by the contraction operation of the link mechanism 21 for each position and the previous locking state is released, the floor structure A is pulled out as described above. On the contrary, move from the movable platform 5.1 in the first stage 1 to the last stage ■
By moving the movable bases 5.6 backward in the downward direction, all the movable bases 5 are moved to the last movable base 5.6. It can be smoothly and reliably stored in a storage recess (not shown) in a state in which it is reduced to a vertical shelf shape under θ.

Although not shown in the drawings, in the third embodiment as well, the depth dimension defined by the amount of pullout F of each movable bed 5 can be arbitrarily set depending on the length of each arm 22, so that, for example, the height When only the movable floor platform 5 is set to the maximum depth dimension, and the other movable floor platforms 5 are set to the optimal depth dimension for the stairs, a ramp is formed with the above-mentioned midway part as a landing, and the floor Structure A can be used as a cod or a
It has advantages such as being able to be used as a knob.

〔Effect of the invention〕

This invention has a plurality of movable platforms each assembled by having rollers at the bottom and supporting columns at the top and connecting a pair of left and right bases with a horizontal beam. In a floor structure in which the entire base can be extended like a pedestal when used in combination to enable sequential nested storage by varying the spacing of the bases and the height of the pillars, each adjacent inner position as described above. At the rear of the column, an expansion/contraction conversion device is placed at the rear of the column and one end changes its position from the rear of the column to the front of each column adjacent to the outside at each position, making it possible to adjust the depth of each movable platform as described above. It is characterized by the following. Therefore, when the floor structure is used, the amount of pull-out of each movable bed platform at each stage can be easily and reliably adjusted by operating the expansion/contraction amount conversion device, thereby changing the amount of pull-out of each movable bed platform in accordance with the purpose. This floor structure can be used as seating for spectator seats, various exhibition stands, and even ramps for ships and aircraft, further expanding the versatility of this type of floor structure. There are effects such as being able to do it.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a telescoping floor structure according to a first embodiment of the present invention, FIG. 2 is a perspective view of the telescoping amount converting device and surrounding essential parts in the H section of FIG. 1, and FIG. M arrow view in Figure 2,
FIG. 4 is a perspective view showing the expansion/contraction amount converting device for a floor structure according to the second embodiment and its surrounding essential parts at a position corresponding to the corner of FIG. 1, and FIG. 5(a) is a third embodiment of the same. Fig. 5 (1) is a perspective view showing the extension operation and peripheral parts of the expansion/contraction amount converting device for a floor structure at a position corresponding to the corner of Fig. 1; FIG. 6 is a perspective view of the same floor structure common to each embodiment used as an exhibition stand with different drawer amounts of the movable floor for each stage, and FIG. 7(a) is a conventional example. FIG. 7(b) is a perspective view of the storage structure before it is pulled out, FIG. 7(C) is a perspective view of the storage structure when the same-floor structure is pulled out, and FIG. It is a diagram. 1, >, 1.2, 1.3, 1.4...
Base 2...Rollers 3, l, 3.2, 3.3, 3.4...
Strut 4.1... Beam 5.1. 5.2, 5.3.

Claims (4)

[Claims] (1) A plurality of movable bed platforms assembled by installing rollers at the bottom and supporting columns at the top and connecting a pair of left and right bases with a horizontal beam can be assembled into a base for each movable bed bed. In a floor structure in which the space between the stands and the height of the pillars are varied to enable sequential nested storage, the entire structure can be extended like a dais when used, and the above corresponds to each adjacent inner position. At the rear of the column, an expansion/contraction converting device is disposed, one end of which changes the position from the rear of the column to the front of each column adjacent to the outside at each position, thereby making it possible to adjust the depth dimension of each movable platform according to the above. A retractable floor structure characterized by: (2) The extensible floor structure according to claim 1, wherein the expansion/contraction amount converting device is comprised of a locking body that can be raised and collapsed. (3) The telescopic floor structure according to claim 1, wherein the telescopic amount conversion device comprises a rotatable arm. (4) The expansion/contraction amount converting device comprises an arm that can be operated by a link mechanism.
The telescopic floor structure described in Section 1.