JPH0413514B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a simple manual method for raising and lowering a stage.

(Problem to be solved by the invention) Traditionally, it has been suitable for stages to be able to be raised and lowered so that they can be stored when not in use. They were folding it up and putting it down.

However, the use of hydraulic cylinders has the drawbacks of high equipment costs and troublesome maintenance. Furthermore, when pulling the vehicle with a wire, the structure is complicated and the wire must be pulled with considerable force, making it difficult for women and elderly people to operate the vehicle.

Therefore, the present invention provides a method for raising and lowering a stage that requires no maintenance and can be easily operated even by women and the elderly.

(Means for Solving the Problems) Therefore, the present invention provides a stage that can be raised and rotated using the proximal end as a fulcrum, and that can be used in a lying position and stored in an upright position, in which high-pressure gas is introduced into a cylinder. The stage is supported by connecting a large number of stay dampers enclosed in the fixed side and the stage side to support the stage. When the stage collapses, the other stay dampers operate in sequence at positions corresponding to the collapse angle to support the stage load.As the stage collapses, the stay dampers operate more to reduce the stage load, allowing the stage to move more slowly. It was made so that it could be laid down.

(Function) Some stay dampers support the upright state of the stage, and also adjust the position according to the inclination angle of the stage, e.g.
Other stay dampers sequentially receive the stage load and operate at each position of 30 degrees, 45 degrees, 60 degrees, 75 degrees, and 87 degrees, increasing the number of stay dampers supported as the stage's inclination angle increases. It is.

As a result, when knocking down a standing stage,
All you have to do is pull it forward with a light force, and even if the stage collapses, the other stay dampers will operate in sequence depending on the angle of collapse, either stopping the stage from collapsing or allowing it to rotate very slowly. Therefore, the stage can be easily and safely installed by simply applying a slight force in the direction of collapse, and the stage can be gently lowered.

Also, if you stop the stage from collapsing midway through, you can simply release the force or apply pressure in the rising direction.
The stage will stop at that point, or at the lodging angle at which a new stay damper will operate.

In addition, when the stage is to be stored upright, it is only necessary to slightly lift the open side of the stage that has fallen down and bias it in the upright direction, and the stage can be easily raised up by the restoring force of each stay damper. At this time, the initial lifting of the stage can be done with just a small amount of force.

(Example) Hereinafter, details of the present invention will be explained with reference to the drawings.

First, a stage lodging support device used in an embodiment of the present invention will be described.

FIG. 1 shows a state in which the stage K is erected and stored in a wall recess, and FIG. 2 shows a state in which the stage K is laid down and placed in use.

There are a total of 28 stay dampers S shown in Figures 1 and 3, and these stay dampers are made by sealing high-pressure gas in a cylinder and are used to open and close the trunk door of a car. It is something that exists.

The stay damper S each connects the end of the rod SA,
Angle 1 or angle 1 is rotatably connected with a pin 4 to a mounting piece 3 fitted and fixed to a fixed shaft 2 which serves as a rotational fulcrum of the stage, and the end of the cylinder Sb is fixed to the back of the stage K, respectively. Pins 5 are connected to connecting pieces 6, 7, 8, and 9 fixed between them, and are provided in parallel in the backstage area.

That is, as shown in FIG.
They are combined to form a set, and one stay damper S is arranged between the stay dampers S in the set as shown in FIG. As shown in FIG. 3A, each stay damper S is provided with 10 stay dampers S as shown in FIG. The ends of the cylinders Sb are connected to pins 5 through elongated holes in connecting pieces 6, 7, 8, and 9, respectively. Among them, the stay dampers S at positions B, C, D, and E shown in Fig. 1 are connected to connecting pieces with elongated holes of different lengths, respectively, as shown in Fig. 3 B, C, D, and E. 4 or 6 each
Therefore, in the standing state of stage K in Figure 5, A
Stage K is supported by the action of 10 stay dampers S located at different positions. From this state, just pull the stage K toward you, and the load of the stage K will overcome the supporting force of the 10 stay dampers S, and the rods of the 10 stay dampers S will be removed.
Stage K rotates down while contracting Sa. During this lodging rotation, each stay damper S
Since it rotates using the pin 4 located inside and below the position as a fulcrum, it rotates non-concentrically with the fulcrum shaft 2 of the stage K. Therefore, when the stage K is rotated 20 degrees to position B in FIG. 5, the pin 5 is moved to the end of the long hole of the connecting piece 6 by the non-concentric rotation of the stay damper S. Therefore, the four stay dampers S connected to the connecting piece 6 receive the load of the stage K for the first time. For this reason, four stay dampers S are newly activated at position B to support and stop the stage K which is about to fall.

Next, when the stage K is further pulled by hand, the load of the stage K overcomes the 14 stay dampers S and reduces the rods SA of the 14 stay dampers S, causing the stage K to further fall and rotate. and 45 to position C in Figure 5.
When the pin 5 is rotated, the rotation of the stay damper S moves the pin 5 to the end of the long hole of the connecting piece 7, so that the four stay dampers S connected thereto receive the load of the stage K for the first time. For this reason, four stay dampers S are newly activated at position C to support and stop the rotating stage K.

In this way, at 60 degrees at position D and at position E in Figure 5,
Similarly, when the connection piece 8 is rotated 88 degrees,
The six and four stay dampers S connected to stage 9 are newly activated to support and stop the rotating stage K. Finally, with all the stay dampers S activated in position E, the stage K should be lightly pushed down to make it contact the floor.

In this way, according to the method of this example, the stay dampers are operated in sequence according to the predetermined inclination angle of the stage K, and in order to support the stage K, the inversion of the stage K is stopped or the stage K is controlled to be inverted and rotated extremely slowly. It turns out. Therefore, by simply urging the stage K in the direction of collapse with a lighter force, the stage K can be gently lowered and installed easily and safely.

Furthermore, if it is desired to stop the stage K midway through the folding and rotation, it is sufficient to simply release the force or push it up slightly in the upright direction, and the stage K will stop at that point. Furthermore, when the stage K is to be stored upright, it is only necessary to slightly lift the open side of the stage K which has fallen down and bias it in the direction of standing up, and the restoring force of each stay damper S allows the stage to easily stand up.
At this time, the initial lifting of the stage can be performed sufficiently with a weak force by applying the initial restoring force of the stay damper S at the E position in FIG. In addition, since the pins 5 return from the elongated holes of each connecting piece depending on the upright position and hold the rod Sa in an extended state, 4 pins each at positions B, C, D, and E, or 6 pins at position D Since the operation of the book stay damper S is released, the stage K can be raised and rotated slowly, which is safe.

Furthermore, if only a large number of stay dampers were installed to operate at the same time, a considerable amount of force would be required to lower the stage, and the stage would suddenly raise and lower, which could be dangerous.
It was not possible to hire him.

Although this example is configured as described above, the present invention is not limited thereto. For example, the angle at which the other stay dampers are newly operated does not matter, and the number thereof may be appropriate depending on the size of the stage.

Moreover, the means for operating the stay damper according to the inclination angle of the stage is also optional, and instead of the connecting piece of this example, a connecting piece with a long hole 10a of a certain length as shown in FIGS. 6 and 7 is used. In addition to the piece 10, the length of contact with the pin 12 may be determined by adjusting the forward and backward movement of the stopper bolt 11. Alternatively, as shown in Fig. 8, a link piece 14 is connected with a pin to a bracket 13 fixed to the stage side, and one end of a stay damper S is connected with a pin to the other end of the link piece 14, so that the link piece moves as the stage is lowered and rotated. It is also possible that the stay damper S receives the load of the stage for the first time when the stay damper 14 moves upward and comes into contact with the stopper bolt 15, and is supported in operation. Furthermore, as shown in FIG. 9, a means for biasing the stage in the upright direction by attaching a torsion spring 17 to a shaft serving as a rotation fulcrum of the stage may also be used.

Note that the configuration of the stay damper is not limited either.

(Effects of the Invention) Therefore, according to the present invention, when a stage in an upright state is toppled, it is only necessary to pull it forward with a light force, and even if the stage falls down, the other stay dampers are activated in sequence according to the angle of collapse. Since the stage stops collapsing or rotates to collapse very slowly, it has a great effect that the stage can be easily and safely installed by simply applying a light force in the direction of collapse. It can be stored standing up and is easy to operate.

[Brief explanation of drawings]

Fig. 1 is a schematic front view showing an example of a stage support device for explaining the present invention, Fig. 2 is a front view of the stage in a state of use after being laid down, and Fig. 3 is a vertical sectional side view of the main parts thereof. Figure A shows one end of the stay damper connected to the angle, Figures B to E are views of the stay damper connected to the connecting pieces, Figure 4 is an enlarged front view showing the connecting part of the stay damper, and Figure 5 shows its function. 6 is a side view of the main part of another example of the means for operating the stay damper, FIG. 7 is a longitudinal sectional front view of FIG. 6, and FIG. 8 is a main part of another example of the means for operating the stay damper. The side view and FIG. 9 are front views of the main parts in a state where the stage is biased in the upright direction. K: stage, S: stay damper, Sa: rod,
Sb: cylinder, 1: angle, 2: shaft,
3: Mounting piece, 4, 5: Pin, 6, 7, 8, 9, 1
0: Connection piece, 11, 15: Stopper bolt, 1
4: Link piece.

Claims (1)

[Scope of Claims] 1. In a stage that can be raised and rotated using the base end as a fulcrum, and that can be used in the collapsed state and stored in the upright state, a stay damper consisting of a cylinder filled with high-pressure gas is placed on the fixed side. A large number of stay dampers are connected to the stage and the stage side to support the stage. When the stage is in the upright position, some stay dampers operate to press and support the upright state, and when the stage is in the upright position, it is moved to a position corresponding to the inclination angle. When the stage falls down, the other stay dampers operate in sequence to support the stage load, and as the stage falls down, the stay dampers operate more often to reduce the stage load, allowing the stage to fall down more slowly. How to get up and down. 2. The labor-saving method for raising and lowering a stage according to claim 1, wherein a plurality of stay dampers are operated every 10 to 20 degrees of lowering angle of the stage.