JP2648187B2 - Movable floor curtain plate device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a curtain plate device that covers a lower side portion of a movable floor that can be raised and lowered.

(Conventional technology and its problems) Conventionally, a movable floor used for a stage of a stage device, etc.
In order to cover a link, an actuator, and the like provided below the movable floor, a curtain plate device is provided in which a plurality of curtain plates that can be overlapped are suspended between the movable floor and the fixed floor.

However, in such a curtain plate device, when the movable floor is raised, there is a gap between the side surface of the curtain plate that overlaps the inside of the plurality of curtain plates and the opening of the fixed floor. In order to reduce the gap, it is necessary to form the cross section of each curtain plate into a thin plate shape, and the rigidity of the curtain plate cannot be sufficiently obtained.
There was a fear that it would break through the curtain and fall into the fixed floor opening.

An object of the present invention is to solve such a conventional problem.

(Means for Solving the Problems) In order to achieve the above object, the present invention includes a movable floor that moves up and down with respect to a fixed floor, and a frame-shaped curtain plate that covers a lower side portion of the movable floor when the movable floor rises. In a movable floor curtain plate device in which a pit for storing a movable floor and a curtain plate is opened on a fixed floor,
A hanging curtain plate suspended from the side end of the movable floor, and an inner curtain plate that overlaps inside the hanging curtain plate are provided, and a projecting portion is formed below the inner curtain plate so as to protrude facing the side surface of the pit. And
A biasing means for pushing the inner curtain plate out of the pit and a means for regulating the rise of the inner curtain plate at a position where the overhanging portion is substantially at the same height as the fixed floor are provided.

(Operation) Based on the above configuration, in the process of moving the movable floor from the fixed floor, the inner curtain plate also rises together with the movable floor via the urging means,
At the same time as the lower end of the hanging curtain plate is separated from the fixed floor, the overhang is held at the same height as the fixed floor via the restricting means.
Therefore, it is possible to avoid a large gap from being formed between the pit and the side surface of the curtain plate, and to prevent small articles from falling into the pit.

In this way, the gap between the pit and the pit is filled by the overhang, so that the sectional thickness of the curtain plate is not restricted, and the rigidity of the curtain plate is sufficiently secured to prevent the danger of breaking through the curtain plate. it can.

Hereinafter, an embodiment in which the present invention is applied to a stage will be described with reference to the accompanying drawings.

As shown in FIGS. 1A, 1B, and 1C, the stage (movable floor) 2 is moved up and down by a pair of X-shaped links 3, 4, 5, 6 and a screw jack 7 provided on the left and right with respect to the base assembly 1. Supported as possible.

A pit 9 for storing the stage 2 is opened in the fixed floor 8, and the stage 2 is held at the same height as the fixed floor 8 as shown by a two-dot chain line in the figure with each screw jack 7 contracted most.

As shown in FIG. 2, three frame-shaped curtain plates 11, 12, and 13 are provided so as to be overlapped with each other around the stage 2 that has risen from the fixed floor 2, and links 3, 4 below the stage 2 are provided. , 5, 6, etc.

The outermost first suspension curtain plate 11 is fixedly suspended from the stage 2 and is connected to the side surface 2a of the stage 2 with almost no level difference.

The second hanging curtain plate 12 overlapping in the middle is slidably suspended inside the first hanging curtain plate 11.

As shown in FIG. 3, a stopper 14 projecting inward is formed at a lower end of the first hanging curtain plate 11, and a stopper 15 projecting outward is formed at an upper end of the second hanging curtain plate 12. The second suspension curtain plate 12 is suspended from the first suspension curtain plate 11 by joining the stoppers 14 and 15 to each other.

As shown also in FIGS. 4 and 5, a pair of gas springs 21 are provided on the left and right sides as means for urging the inner curtain plate 13 that overlaps the innermost portion upward.

The gas spring 21 has a rod 23 protruding from the cylinder 22 by gas pressure, a tip of each rod 23 is connected to the base assembly 1 side via a hinge eye 24, and a base end of each cylinder 22 is connected to a slide frame 25 via a hinge eye 33. Be linked. The slide frame 25 is slidably supported by a guide frame 26 erected from the base assembly 1, and is pushed up by each gas spring 21.

One end of a wire 27 is connected to the inner curtain plate 13 via an arm 28, and the wire 27 is wrapped around two pulleys 29 attached to the upper end of the slide frame 25, and further, a pulley 30 attached to the guide frame 26. After that, the base end is connected to the upper end of the slide frame 25 via the arm 31.

As a result, when the slide frame 25 is extended, the tip of the wire 27 is pulled up, and the gas spring
The inner curtain 13 is raised with a stroke three times as large as 21.

At the lower end of the inner curtain plate 13, a projecting portion 35 projects outward in an L-shaped cross section. The side end surface 35a of the overhang portion 35 is made to be substantially on the extension surface of the side surface 11a of the first suspension curtain plate 11, and the side surface 35a of the overhang portion 35 and the side surface 11a of the first suspension curtain plate 11 The side wall 9a is made to face with a predetermined small gap.

As means for restricting the rise of the inner curtain plate 13 at a position where the overhang portion 35 is substantially at the same height as the fixed floor 8, a slide frame
A stopper 32 is protruded in the middle of 25, and an adjuster bolt 33 that comes into contact with the stopper 32 is attached to the guide frame 26 to regulate the amount of pushing up of the inner curtain plate 13 at a predetermined position.

 Next, the operation will be described.

By the forward and reverse rotation of the motor 37, the X-type links 3, 4, 5, and 6 extend and contract in synchronization with each other via the screw jacks 7,
Adjust the height of stage 2 steplessly.

When each screw jack 7 is fully extended,
As shown by solid lines in A, B, and C, the stage 2 is held horizontally at a predetermined height from the fixed floor 8, while the screw jacks 7 are in the most contracted state, as shown by the two-dot chain line in the figure. Meanwhile, the stage 2 is held at the same height as the fixed floor 8.

When the stage 2 is at the same height as the fixed floor 8, each curtain plate
11, 12, and 13 are superimposed on each other and stored in the pit 9. At this time, the gas spring 21 is contracted most.

When the stage 2 begins to protrude from the fixed floor 8, the inner curtain
Since 13 is urged upward by the gas spring 21 via the wire 27, it rises together with the stage 2.

When the first hanging curtain plate 11 completely projects from the pit 9 and the first hanging curtain plate 11 separates from the fixed floor 8, the stopper 32 of the slide frame 25 comes into contact with the adjuster bolt 33,
The overhang portion 35 of the inner curtain 13 is held at the same height as the fixed floor 8.

When the stage 2 is further raised, the stopper 15 of the second suspension curtain plate 12 comes into contact with the stopper 14 of the first suspension curtain plate 11, and the second suspension curtain plate 12 is suspended by the first suspension curtain plate 11, so that the stage 2 and the fixed floor Cover between eight.

As described above, when the first suspension curtain plate 11 and the second suspension curtain plate 12 are separated from the fixed floor 8, since the overhang portion 35 is already held at the same height as the fixed floor 8, the side surface 13 a of the inner curtain plate 13 and It is possible to avoid leaving a large gap between the side walls 9a of the pit 9 and to prevent small items from falling into the pit 9.

Since the overhanging portion 35 prevents a gap from being formed in the pit 9, the thickness of each of the curtain plates 11, 12, 13 is not restricted, and sufficient rigidity can be secured.

Further, as shown in FIG.
The lower end surfaces 43a, 44a, 45a of each of the curtain plates 43, 44, 45 facing each other are formed so as to be inclined outward, and the toe 46 placed on the overhang portion 42 when the curtain plates 43, 44, 45 descends. May not be sandwiched.

(Effects of the Invention) As described above, according to the present invention, in a curtain plate device of a movable floor used for a stage stage or the like, a hanging curtain plate suspended at a side end of the movable floor and an inner side of the hanging curtain plate. An overhang is formed on the lower part of the inner curtain plate, and an overhanging portion is formed at the bottom of the inner curtain plate so as to protrude from the side of the pit. The provision of a means to regulate at a position that is approximately the same height as the floor prevents a large gap from being left between the pit and the side of the curtain plate, and prevents small items from falling into the pit, resulting in each curtain. The rigidity of the plate can be sufficiently ensured to prevent the danger of breaking through the curtain plate.

[Brief description of the drawings]

1A is a front view showing one embodiment of the present invention, FIG. 1B is a plan view of the same, FIG. 1C is a side view of the same, FIG. 2 is a front view of a curtain plate, and FIG. FIG. 4 is a side view of the vicinity of the gas spring, FIG. 5 is a front view of the same, and FIG. 6 is a sectional view of a main part showing another embodiment. 2 ... stage (movable floor), 3,4,5,6 ... X-shaped link,
7 ... screw jack, 8 ... fixed floor, 9 ... pit, 11 ... first hanging curtain, 12 ... second hanging curtain, 13 ...
Inner curtain plate, 21 Gas spring, 25 Slide frame, 26 Guide frame, 27 Wire, 32 Stopper, 33 Adjuster bolt, 35 Overhang.

Claims (1)

(57) [Claims] 1. A movable floor which rises and lowers with respect to a fixed floor, and a frame-shaped curtain plate which covers a lower portion of a side of the movable floor when the movable floor is raised, a pit for storing the movable floor and the curtain plate on the fixed floor. In the curtain plate device of the movable floor that has been opened, a hanging curtain plate suspended at a side end of the movable floor and an inner curtain plate that overlaps inside the hanging curtain plate are provided, and a pit is provided below the inner curtain plate. Forming an overhang that protrudes against the side surface and providing biasing means for pushing the inner curtain plate out of the pit, and means for restricting the rise of the inner curtain plate at a position where the overhang is approximately the same height as the fixed floor. Characteristic movable floor curtain plate device.