JPH04179780A - Traveling stage - Google Patents

Abstract

PURPOSE:To facilitate the installation of a traveling stage for a multipurpose hall, etc., by making it possible to fold two floor boards in two through a hinge, and forming a driving mechanism to the coupling section to arrange X links capable of rolling operation together with a leg member. CONSTITUTION:A stage is constituted of a floor section 1 capable of folding in two, leg section 2 having casters 20, a plurality of X links 3 and driving mechanism 4. The floor section 1 is such that two floor boards 10 are connected through a hinge 11, and the X links 3 to make the height of the floor surface variable in the case of rolling operation are provided thereunder. The driving device 4 constituted of a screw-like rod 40, driving apparatus 41, bracket 42, driving link 43 and directly linked lever 40 is placed together with the leg section 2. According to the constitution, a folding type traveling stage can use the floor boards 10 of the floor section 1 as the stage with operation of the driving mechanism 4.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a movable stage that is most suitable for use as a temporary stage in a multipurpose hall, gymnasium, or the like.

(Prior art) In recent years, multi-purpose halls, gymnasiums, etc. are replaced with conventional fixed stages and temporary stages are installed each time, and movable stages are often used for these temporary stages to make them easier to transport. It is said that

By the way, these types of movable stages today are not only portable, but also foldable so that they do not take up a large storage area when stored when not in use. Suppose it is formed.

That is, the movable stages that have been proposed so far are generally designed so that the upper floor part can be folded so that they do not occupy a large area when not in use.
The movable stage is formed to have casters on the lower legs that support the floor so that the movable stage can move along the floor.

Therefore, with a conventional movable stage, a desired stage can be formed by moving it to a predetermined position and flattening the floor by a so-called opening operation.

[Invention or problem to be solved]

However, in the conventional mobile stage mentioned above,
There is an inconvenience that the height of the floor relative to the floor is fixed in advance and cannot be changed freely.

Therefore, if stages with different floor heights are to be provided, it is necessary to prepare another stage having floors with different heights.

As a result, even if the movable stage is foldable to save space, there will be a large number of movable stages, which will occupy a large storage space when not in use, making it difficult to use a movable stage. There is a risk that it will be abandoned.

This invention was invented in view of the above-mentioned circumstances, and its purpose is to provide temporary construction in multipurpose halls, gymnasiums, etc. by making it possible to arbitrarily change the height of the floor with respect to the floor surface. The purpose of the present invention is to provide a new mobile stage that is optimal for use as a stage.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the structure of the present invention includes a floor part having two floor plates and formed so as to be able to be folded in half, In a mobile stage, legs are formed to support the floor from below and move on the floor using casters disposed on the lower end side. It has a plurality of X-links that vary the height of the floor relative to the floor surface during the raising and lowering operation, while the legs operate to raise and lower the X-links and fold the floor in two into a mountain shape. This device is characterized by having a drive mechanism that does this.

The drive mechanism includes a screw hole that stands upright below the floor portion or the portion that is folded in half into a mountain shape, a driver that rotates the screw rod, and a drive mechanism that is screwed into the screw rod. A vertically movable frame, a driving link that has one end pivoted to the bracket and the other end pivoted to the X-link, and one end pivoted to the lower end of the spiral rod and the other end pivoted to the leg member. It is assumed that it has a connected culm.

Further, it is assumed that the driver is operated by a separately prepared prime mover, and in particular, a portable electric motor is selected as the prime mover.

Furthermore, regarding the floor section, a synchronization mechanism is provided so that when the two floorboards are raised and lowered by the operation of each X-link, they are raised and lowered in synchronization.

Further, the caster in one leg is held by a bracket pivotally attached to the lower end of the leg member, and
It is assumed that a free lock stay damper is disposed between the leg member and the bracket.

(Function) Therefore, by using the casters installed at the lower end of one leg, it is possible to use the casters not only when the floor is flat and ready for use, but also when the floor is folded into a mountain shape and becomes unusable. Even when in use, the movable stage can be moved along the floor of a hall or the like.

Then, the movable stage in the folded state is flattened by a so-called opening operation of the floor part by the operation of the drive mechanism, so that it can be used as a so-called stage.

That is, the movable stage in the folded state is made ready for use by actuation of the drive mechanism, and further actuation of the drive mechanism drives the X-link, making it possible to raise the floor plate constituting the floor section. .

In addition, when the movable stage is ready for use, the casters on the legs are prevented from rotating, and the legs are stabilized by putting the free locking stay tamper in the closed state. Stable usage becomes possible.

In addition, by performing various operations in reverse to the above, the floor plate of the movable stage is lowered to change the height of the floor section relative to the floor surface, and a further drive mechanism is actuated to fold the floor section into a mountain shape. It will be.

〔Example〕

Hereinafter, the present invention will be described in detail based on the illustrated embodiments.

As shown in FIG. 1, the movable stage according to the present invention basically includes a floor portion l and leg portions 2, and further includes a plurality of X-links 3 and a drive mechanism 4. It has the following.

Note that, in FIG. 1, some constituent members of the movable stage are shown with diagrams omitted.

The floor portion 1 is formed by connecting two floor plates 10 through a hinge 11, and is formed so that the connected portion can be folded into a mountain shape, as shown in FIG.

Incidentally, in this invention, the reason why the floor part 1 is folded into a mountain shape is that when the floor part 1 is folded, the upper surface or outside of the floor plate 10 is exposed, and the floor part 1 is folded into a valley. This is because it looks better than if it were to be folded into a shape and expose the back side of the r4.

The floor plates 10 forming the floor part l are arranged so that their inner ends 10a are butted against each other, and an upper beam member 12 is connected to the lower surface of each floor plate 10 for reinforcement. ing.

Further, in the floor portion l, a lower beam member 13 is disposed below the upper beam member 12 so as to face it.

Then, a tip 11a serving as the upper end of the hinge 11 is attached to the inner end portion 13a of the lower beam member 13 facing each other.
It is said that it will be pivoted.

The base end 11b, which is the lower end of the hinge 11, is connected to a frame body, which is a base (not shown), together with a drive mechanism 4, which will be described later.

By the way, there is an X-link 3 installed on the floor l.
The X-link 3 is formed so as to be able to change the height of the floor portion I relative to the floor surface F of the hole, etc., during its up-and-down operation.

To explain briefly, the X link 3 is pivoted by two link members 30 and 31 or pins 32 formed to have a length slightly shorter than the length of the upper beam 12 (or lower beam 13). It is formed to have an X-cross shape when worn.

Taking the left half of FIG. 1 as an example, the upper end 30a of one link member 30 is pivotally connected to the outer end 12a of the upper beam member 12, and the lower end 31a of the other link member 31 is It is pivotally attached to the outer end 13b of the lower beam I3.

In addition, the X link 3 has a lower end 30 of one link member 30.
b is freely present at the inner end 13a of the lower beam 13, and the upper end 31b of the other link member 31 is also freely present at the inner end 12b of the upper beam 12.

Therefore, when a force is applied to the lower end 30b of one of the link members 30 to lift it, the lower end 30b of the one link member 30 horizontally moves outward along with the beam 13, and the other The upper end 31b of the link member 31 of
The secondary wire will move horizontally to the beam 12, and at this time, the X-link 3 will gradually stand up and touch the floor plate 1
will be raised while remaining horizontal.

That is, when a force is applied to the lower end 30b of one link member 30 to lift it, the floor plate 1O rises, and when the floor plate 10 is in the raised state, when the force is released, the floor plate 10 Or it will go down.

Therefore, in this invention, by controlling the raising and lowering movement of the X link 3, it is possible to raise and lower the floor plate 10 while maintaining the horizontal state with respect to the floor surface F. It also makes it possible to position the device at any height relative to the floor F.

A tuning mechanism 14 is provided between the two floorboards 10 to prevent misalignment between the two when the floorboard 10 is raised or lowered. , a ball 14a disposed on the end face of one upper beam member 12, and a ball receiver 14b disposed so as to face the end face of the other upper beam member 12.

On the other hand, the leg portion 2 is formed to support the floor portion l from below and to be movable on the floor surface F using casters 20 disposed on the lower end side thereof.

That is, in this embodiment, the leg portion 2 includes a leg member 21 which is pivotally connected to the outer end portion 13b of the lower beam member 13 and is vertically disposed to support the lower beam member 13 from below; Leg member 21
It has a bracket 22 pivotably attached to the lower end 21a of the bracket 22, a caster 20 held by the bracket 22, and a free lock stator 23 installed between the leg member 2I and the bracket 22. It becomes.

The caster 20 has a so-called brake mechanism,
Depending on the selected operation, whether or not the caster 20 can be rotated can be selected.

When the free lock stay damper 23 is in a free state, it is in an extendable state, that is, it is in a state where the movable stage is lifted up, and the casters 20 are used to lift the movable stage. enable movement.

Moreover, the free lock stamper 23 is as follows.

When in the locked state, its contraction is prevented.

Therefore, at this time, together with the rotation of the casters 20 being prevented, the movement of the movable stage is also prevented, making it possible to fix it at a predetermined position.

Incidentally, the bracket 22 may be connected to the one leg member 21 so as to be horizontally rotatable.

By the way, in this invention, the leg portion 2 has the X
A drive lI1.4i114 is provided which operates to raise and lower the link 3 and to fold the floor part l into two mountain-like shapes.

That is, as described above, the drive mechanism 4 is supported by a frame (not shown) that connects the base end 11b of the tray 11, and is located at the portion where the floor portion 1 is folded in two into a mountain shape. a spiral rod 40 that stands upright downward; a driver 41 that is connected to the upper end of the spiral rod 40 and rotates the rod 40;
Bracket 4 that is screwed onto the screw rod 40 and moves up and down along with the screw rod 40 when the screw rod 40 rotates.
2.

A drive link 43 is disposed between the bracket 42 and the lower end of one of the link members 30 of the X-link 3, and between the lower end of the spiral rod 40 and the leg member 20. A connecting rod 44 is provided on the holder.

It is assumed that the driver 41 is operated by a separately prepared prime mover, and in particular, a portable electric motor is selected as the prime mover.

Incidentally, if a portable electric motor is selected as the prime mover, the weight of the movable stage itself can be reduced, which makes moving the stage easier.

Therefore, instead of selecting the above-mentioned portable electric motor,
It goes without saying that a prime mover may be incorporated in the movable stage in advance.

In addition, a seat part 40a is connected to the lower end of the spiral rod 40, and since the seat part 40a comes into contact with the floor surface F, the connecting rod 44 does not come into contact with the floor surface F. This is taken into consideration.

Therefore, in the drive mechanism 4 configured as described above, the screw rod 40 is rotated in the normal direction from the state shown in FIG. When lowered as shown in the figure, the drive link 43
Link 3 will be laid down, and at this time, the floor plate IO
It is lowered and the height relative to the floor F is changed.

On the other hand, when the screw rod 40 is further rotated by further activation of the driver 41 from the above-mentioned collapsed state of the X-link 3, the bracket 42 comes to be lowered to the lowest position as shown by the imaginary line in the figure, and at this time , via the drive link 43 or the X link 3, as shown in the diagram, the floor l
The upper end 11a ii1 of the hinge 11 is folded into a mountain shape.

That is, if the driving link 43 is forcibly lowered from the above state, it will be pulled down to the center of the floor l, or the lower end of the spiral opening 40 will be placed there. The seat portion 40a of the arrangement is locked to the floor F, and further descent is prevented.

Therefore, the floor part l will be in a situation where its outer side is forcibly lowered around the hinge 11, or the outer end of the floor part l is in a so-called fixed state with the legs 2, Undersewing on the outside of the floor l is prevented.

Therefore, when the driving link 43 is forcibly lowered from the above state, the driving mechanism 4 is lifted by its own operation, and at this time, the action of the connecting culm 44 connected to the flaket 42 is caused. The leg member 20 is pulled toward the center, and is therefore folded into a mountain shape around the center of the floor 1 or the hinge II.

At this time, the casters 20 of the leg portions 2 move across the floor F, so that the folding operation of the floor portion I is performed smoothly.

According to the movable stage according to this embodiment formed as described above, the floor part 1 can be flattened and ready for use, and the floor part 1 can be folded into a mountain shape and not used. When in use, the movable stage can be moved along the floor F by using casters 20 provided at the lower end of the legs 2.

The movable stage in the folded state can be used as a stage by flattening the floor 1 by a so-called opening operation.

That is, in order to bring the movable stage in the folded state into a usable state, the driver 41 in the drive mechanism 4 is driven by an appropriate means, in the present invention, by an electric motor that is a separately prepared portable prime mover. , so-called opening operation.

When the movable stage is ready for use, the caster 20 on one leg 2 is prevented from rotating, and the free mouth/tux stay damper 23 is locked to stabilize the leg 2. This makes it possible to use the movable stage stably.

Also, by performing the opposite operation to the above, the movable stage will be folded into a mountain shape.

It becomes possible to store it when not in use.

In the embodiment described above, a seat 40 is provided at the lower end of the helical rod 40.
Suppose that the seats 40a are connected to each other and the seats 40a are in contact with the floor F so that the connecting culms 44 do not come into contact with the floor F. The portion 40a may be a lower end portion of a jack-type stand mechanism connected to a frame (not shown) that supports the drive mechanism 4.

〔Effect of the invention〕

As described above, according to the present invention, there is provided a floor section that has two floor plates and is formed to be able to be folded in half, and casters that support the floor section from below and are disposed on the lower end side. A movable stage having legs formed to be able to move on a floor surface, which supports the floor section or each floor plate from below and adjusts the height of the floor section relative to the floor surface when the floor section is raised or lowered. It has a plurality of X-links that make it variable, and one leg has a drive mechanism that operates to raise and lower the X-links and to fold the floor in two into a mountain shape. Not only can it be moved freely using casters whether it is in use or not in use, but the height of the floor relative to the floor can also be changed freely.

As an extension of the operation to make the floor part that is folded into a mountain shape into a flat state for use, it becomes possible to change the height of the floor part with respect to the floor surface, and it is also possible to change the height of the floor part with respect to the floor surface. Even when it is put away due to non-use, the floor can be folded into a mountain shape as an extension of the operation of lowering the height of the floor, making it easier to operate when in use and when not in use. It has the advantage of being ideal for use as a temporary stage in multipurpose halls, gymnasiums, etc.

[Brief explanation of the drawing]

#! FIG. 1 is a partially broken and omitted front sectional view of a movable stage according to the present invention, and FIG. 2 is a front sectional view showing the movable stage in a folded state. [Explanation of symbols] l--floor part 2-leg part 3-X link
4... Drive mechanism 10... Floor plate 11-... Hinge 12-...
Upper beam material ]3... Lower beam material 14... Tuning mechanism 20-... Caster 21... Leg member 2
2.42--Fracket 23--Free lock stay damper 30, 31 link member 32--Bin 40--Spiral rod 41--Driver 42--Fracket
43-...Drive link 44...Connection culm F
・・・Patent attorney Izumi Amano－＋”l・

Claims (1)

[Claims] A floor part is formed to have two floor plates and can be folded in half, and the floor part is supported from below and is formed to be movable on the floor surface using casters disposed on the lower end side. The legs and
In the mobile stage, the floor section supports each floor plate from below and has a plurality of X-links that vary the height of the floor section relative to the floor surface during the raising and lowering operation of the floor section. A movable stage characterized in that the legs have a drive mechanism that operates to raise and lower an X-link and fold the floor in two into a mountain shape.