JPH0748896Y2 - Folding stage equipment - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention allows a horizontally-supported fixed base and a movable base to be folded in two and erected to stand up when not in use so that they can be stored close to a wall or the like. It is about folding stage equipment.

[Prior Art and Problems] A foldable stage device has been proposed for multipurpose use in auditoriums, gymnasiums, and the like. The present invention is designed to enable a folding stage apparatus such as this to be stored horizontally along with a folding wall surface etc. when the stage base plate that is horizontally supported when in use is folded in two when not in use. It relates to the stage equipment.

Conventionally, as this type of device, for example, the invention of Japanese Utility Model Publication No. 57-48931 and the invention of Japanese Utility Model Publication No. 58-91962 have been proposed. In both of these devices, two stages (divided stages or stages) that make up the stage are connected by a shaft that can be bent freely at the abutting edges, and when used, the other edge of the fixed table is used as the base frame (machine frame) and the other movable. The edge of the stand is supported by a foot stand with wheels to support it horizontally, enabling it to be used as a stage, while the other end of the movable stand by a wire winding device provided on the base frame side when not in use. The sides are pulled together, and the two bases are brought into contact with each other and folded up in a standing state while being folded in two with the shaft coupling portion as a fulcrum. Then, in the folding, the former device is designed so that the middle of the wire to be passed between the outer edges of the two bases is bridged to the driving wheel provided below the tensioned position of the wire at the connecting leg provided at the shaft coupling part. At the time of folding and folding, the tension of the wire by the winding device pulls up this moving wheel, and this momentum pushes up the shaft coupling part to start bending, and then pulls up the outer edge of the movable table through winding the wire. It adopts a folding method.

However, since this method pushes up a heavy stage with the tension of the wire, an extremely high tension must be applied here, and therefore a strong wire and structure are required for practical use. In addition to the difficulty in manufacturing, there is a problem that it is difficult to obtain a smooth folding start.

On the other hand, in the latter invention, instead of tensioning the wire, the wire is wound to pull one end of a rotating arm pivotally attached to an intermediate leg and to pull up the tilted rotating arm to move the intermediate arm. The structure is such that the legs are pushed up and the shaft joints in the center of the stage are bent at the waist to start folding. However, also in this method, it is difficult to raise the tilted arm by pulling the wire due to the weight of the stage. In particular, when the height of the stage is low, it is extremely difficult to raise this by pulling the wire because the tilt angle of the pivot arm that pushes up the pivot attachment part is large, and it is too large for the pivot arm to attach it. There is a problem that it is easily damaged by the load.

[Object of the Invention] The present invention aims to improve the above-mentioned conventional folding stage apparatus in view of the problems, especially the difficulty in starting the shaft-coupling connecting portion at the time of starting the folding when starting the folding. It was devised, and the problems of the former device due to the tension of the wire alone and the problems of the latter device accompanied by overload caused by raising the tilting rotating arm are solved, and smooth folding can be expected. It aims to provide an improved folding stage set.

[Means for Solving the Problems] Based on the above-mentioned object, the present invention pushes up a connecting portion for axially connecting a fixed base and a movable base by interlocking with the winding of a wire to raise the axial mounting point of the connecting portion. It is intended to provide a stage device that smoothly creates a trigger for the bending operation of both bases as a base point and can be quickly folded by winding the wire thereafter. In particular, the feature of the present invention is that a slide frame is provided under a shaft-attaching connecting portion that connects two pedestals in a freely bendable manner, and a leg member is slidably accommodated in this slide frame for use in a stage. Sometimes the cooperation between the two supports the abutting end of the platform, while the sliding frame and leg members have the leg member pulleys located above and the sliding frame pulleys located below the required spacing. Two pulleys are placed opposite to each other, and when the wire connected to the winding device is laid around and folded, the upper one of the above two pulleys is pulled to the lower pulley by winding the wire, This pulls down the leg member housed in the sliding frame, and along with this, pushes up the sliding frame to perform the actuation operation of the folding with the shaft-attached connecting portion as the base point. To provide.

To further explain this in detail, the abutting edges of the fixed base and the movable base are axially connected, and the other end of the fixed base is used as a floor-fixing base frame, and the other end of the movable base is used as a wheeled pedestal. In a stage apparatus in which both bases are supported by shafts connected to each other, and both bases are folded so that their lower surfaces face each other with the connecting portion as a base point, the butting connection of the both bases is performed. A sliding frame is vertically installed on the portion so that the leg member is slidably fitted in the vertical direction. A pair of sliding frames and the leg member are vertically spaced from each other so that the pulley of the leg member is located above. The upper and lower pulleys are rotatably opposed to each other, and the slide frame side is also provided with an induction pulley, while the pair of upper and lower pulleys are in the middle, and a wire is wound on the base frame of the fixed base. The device is provided with a folding pulley on the other end side of the movable table, and the wire whose one end is fixed to the base frame side is first attached to the lower frame of the sliding frame. In, then hung on a pulley on the leg member,
After it is laid again on the lower pulley, it is laid around the folding pulley, the other end of the wire is connected to the winding device via the guide pulley, and at the time of folding, the wire is pulled up by the winding of the winding device and the tension is applied. By pulling the upper pulley to the lower pulley by extending the leg member downwards of the sliding frame and bending the shaft coupling portion above it in a waist-folding shape,
An object of the present invention is to provide a folding stage apparatus in which the other end edge of the movable table is pulled toward the base frame and folded by successive winding.

In view of the fact that the lower end of the leg member rubs the floor surface when the upper pulley is pulled down and the sliding frame starts to move upward when the winding of the wire starts at the folding of the stage, the present invention considers this leg. It is an object of the present invention to provide a folding stage apparatus in which wheels are provided at the lower ends of members to avoid damage to the floor surface.

Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments and the features thereof will be clarified.

[Embodiment] FIG. 1 to FIG. 3 are side views for explaining an initial process of bending from a state of use as a stage to folding into two folds, and FIG. It is the side that is in an upright position. In the drawing, 1 is a fixed base that is one half of the stage, and 2 is a movable base that constitutes the other half. Reference numerals 3 and 4 denote front and rear frames that are supported along the lower surfaces of the fixed base and the movable base, respectively, and 5 is between each of the frames 3, 3 and 4, 4 provided in parallel on both sides of the base. And a support member 6 for supporting the lower surfaces of the fixed base 1 and the movable base 2, respectively, and 6 is a connecting member for connecting the abutting ends of the front and rear frames 3 and 4 to each other through shafts 7 and 8, Reference numeral 9 is a base frame for supporting the other end of the rear frame 3, and 10 is a pedestal having wheels 11 at the lower end for supporting the other end of the front frame 4. The reference numeral 12 designates a connecting rod which is positioned directly below the abutting edges 1a and 2a of the fixed base 1 and the movable base 2 in a parallel manner in the middle of the joint 5 which is passed to the front and rear frames 3 and 4. A sliding frame is provided vertically from the lower surface of the connecting rod, and 14 is a leg member fitted into the sliding frame so as to be able to freely extend downward.

The fixed base 1 and the movable base 2 supported by the support frames 3 and 4 via the shaft 5 are supported at their outer ends, that is, the front end and the rear end by the leg base 10 and the base frame 9, respectively, and by the connecting member. By supporting the connected abutting ends by the sliding frame 13 and the leg members 14 fitted to the sliding frame 13, the entire stage is supported horizontally.

The frames 3 and 4 supporting the fixed base 1 and the movable base 2 are rotatably attached to the connecting member 6 through shafts 7 and 8, respectively, and the other end is attached to the frame 3. Are pivotally attached (not shown) to the upper end of the base frame 9 and the upper end of the pedestal 10 in the frame 4, respectively. The auxiliary frames 15 and 16 are passed, one end of the frame 15 is attached to the lower end portion of the base frame 9, and one end of the frame 16 is attached to the lower end portion of the pedestal 10 via shafts 17 and 18, respectively, and the other ends thereof. Below the connecting member,
Although not shown, the sliding frame 13 is connected to the lower end of the sliding frame 13 by a shaft.

With this structure, the sliding frame 13 is held in an upright posture via the frames 3 and 15 with the base frame 9 as a reference, and the frame 4
The pedestal 10 is held in an upright posture via the and 16. The respective ends of the frame are rotatably connected to each other through a shaft so that the base frame 9, the sliding frame 13, and the foot stand.
In a state in which 10 is held in an upright posture, the frames 3 and 4 can be bent in two folds with the frames 15 and 16 with the shaft-attached connecting portion of the connecting member 6, that is, the shafts 7 and 8 as fulcrums. .

By the way, the sliding frame 13 is formed in a rectangular tube shape, and a prismatic leg member 14 is slidably fitted from the lower end opening, and the upper end of the leg member 14 is brought into contact with the upper end surface of the hollow portion. It is designed to support the connecting rod 12. Then, here, a vertically long slit 19 is formed on one side surface, and a shaft 20 horizontally implanted from the side surface of the leg member 14 is projected to the outside through the slit.

The shaft 20 is a support shaft for a pulley 22 on which a wire 21 to be described later is hung, and below the pulley 22, a pulley 23 for hanging the wire 21 is also provided at intervals. The lower pulley 23 is a sliding frame
Bearings provided on the lower surface of the frame 24 that is integrated with the lower end of the frame 13.
It is rotatably supported by 25 and is provided so as to stand up and down relative to the above pulley 22.

In the figure, 26 is a guide pulley supported on the lower pulley 23 and a moving shaft, and 27 is a folding pulley attached to a frame 28 on the tip side of the movable table 2.

One end of the wire 21 is fixed to the upper frame 29 of the base frame 9 that supports the lower surface of the outer edge of the fixed base 1, and the wire 21 is extended by the sliding frame 13 as shown in FIGS. On the lower pulley 23 located in the lateral direction from below, and from this as a reference point, on the upper pulley 22 above it, and again around the lower pulley 23. The other end is connected to the winding device (not shown) via the folding pulley 27 at the tip of the movable table, the return pulley 26, and the original pulleys 30 and 31 provided in the base frame 9.

The stage device of the present invention is constructed as described above, and when it is used as a stage, the fixed base 1 whose one end is supported by the base frame 9 is horizontally extended along the floor 32 as shown in FIG. At the same time, the movable base 2 connected to the free end abutting end 1a via the shaft-attaching connecting member 6 is also horizontally extended, and its lower surface is fitted to the leg base 10 and the sliding frame 13. It will be supported by the leg member 14. Next, when storing from this state, drive a motor (not shown) of the winding device of the wire 21,
It is folded and stored by winding the wire. More specifically, when the winding of the wire 21 is started in the state shown in FIG. 1, since one end is fixed, the wire is tensioned over the entire length and the pulleys are pulled together. This means that the movable upper pulley 22 is attracted to the lower pulley 23 at this time to pull down the leg member 14 fitted inside the sliding frame. Therefore, the leg member 14 that abuts the wheel 33 provided at the leg end on the floor 32 pushes up the sliding frame 13 together with its extension, and pushes up the connecting member 6 via the joint 12 extending to the upper end thereof. The bending of the connecting portion between the fixed base 1 and the movable base 2 is started with the shafts 7 and 8 as fulcrums (see FIG. 2).

At the start of this bending, in the present embodiment, as shown in the figure, the original pulley 30 and the folding pulley 27 are provided near the floor surfaces of the fixed base and the movable base, respectively, and the lower pulley 23 and the guide pulley 26 are respectively provided in the above two. The wire 21 is stretched in a V shape in preparation for the position below the pulleys 30 and 27. When the wire 21 is tensioned by the drive of the winding device, the tension causes the lower pulley 2
3. The guide pulley 26 is pulled up to assist the bending operation of both bases with the connecting member as a base point.

In this way, when the bending of the connecting portion between the fixed base and the movable base is started and the extension of the leg member 14 is finished, the wire 21 to be wound up causes the return pulley 27 to be pulled to the original pulley 30 side. The bending will proceed as shown in Fig. 3. As the winding of the wire progresses, the movable table 2 is attracted to the lower surface of the fixed table and is folded in two to be folded upright (FIG. 4).

To change from the folded state to the use state, push out the movable table while unwinding the wire wound on the winding device. When the movable table is expanded, tension is applied to the wire that is unwound due to the weight of both tables. When the wire is gradually loosened, the wire will expand to its flat state. Then, the axle 33 of the leg end of the leg member 14 that has been extended immediately before being fully deployed comes into contact with the floor 32 and receives the weight, and is further attracted to the lower pulley 23 by the continuous payout of the wire. The pulley 22 is released, and the leg member 14 slides along with this.
It moves up in 13 and its upper end contacts the upper surface inside the frame to receive the weight acting on the connecting portion between the fixed base and the movable base.

The floor contact of the extended leg member immediately before the flat expansion provides a cushioning effect at the time of the expansion operation, and the wheel 33 eliminates the friction with the floor surface after the floor contact.

[Effects of the Invention] The folding stage apparatus according to the present invention has been described in detail above with reference to the embodiments. According to the present invention, the fixed base 1 and the movable base 2 can be used as a stage by extending the base flat. On the other hand, when the wire is wound by the drive of the winding device, the sliding frame
The leg member 14 housed in 13 extends and pushes up the sliding frame, pushes up the connecting member 6 that connects the two bases, and bends the abutting ends of the two bases into a waist-folding shape with the connecting shafts 7 and 8 as fulcrums. Since it can be made to act as a trigger for the folding, it can be easily folded in two by subsequent winding of the wire.

Then, the device of the present invention can be folded back in half and erected, and the stage can be unfolded again by unwinding the wire and returned to a usable state. Since the extended leg members come into contact with the floor to receive the weight and then contract inside the sliding frame to receive the weight acting on the connecting part of the stand, the impact on the floor surface can be mitigated. It has the advantage of being safe to operate.

[Brief description of drawings]

The drawings show an embodiment of the stage apparatus according to the present invention. FIG. 1 is a side view of the stage in use, and FIG. 2 is a view in which the leg members extend from the sliding frame and are fixed as the wire is wound. A side view showing a state where a waist break has been triggered at the connecting portion between the base and the movable base, FIG. 3 is a side view showing a state in which the leg members are lifted up as the wire winding progresses, and FIG. FIG. 5 is an enlarged side view of a main part, FIG. 5 is a plan view of the above figure, and FIG. 7 is a sectional view taken along line VII-VII of FIG. , FIG. 8 is an enlarged perspective view of the main part. 1 ... Fixed base, 2 ... Movable base 3,4 ... Frame, 6 ... Connecting member 7,8 ... Connection shaft, 9 ... Base frame 10 ... Leg stand, 11 ... Wheel 13 ...... Sliding frame, 14 ...... Leg member 15,16 ...... Frame, 19 ...... Slit 20 ...... Axis, 21 ...... Wire 22 ...... Upper pulley, 23 ...... Lower pulley 26 ...... Induction pulley, 27 …… Folding pulley 30 …… Original pulley

Claims (2)

[Scope of utility model registration request] 1. The abutting end edges of a fixed base and a movable base are axially connected to each other, and the other end of the fixed base is a floor-fixing base frame, and the other end of the movable base is a wheeled pedestal. In a stage apparatus in which shafts are continuously installed and both pedestals are supported horizontally so that they can be folded so that the lower surfaces of both pedestals face each other with the connecting portion as a base point, A sliding frame is vertically provided at the abutting connection portion of the two bases so that the leg member is slidably fitted in the vertical direction. The leg member is provided with an upper pulley on an upper portion thereof, and the other sliding frame is provided with an upper pulley thereof. A lower pulley is rotatably supported below the pulley so as to face each other at a predetermined interval, and a guide pulley is provided on the sliding frame side so that the upper and lower pulleys face each other vertically. A wire winding device is mounted on the base frame of the fixed base positioned on one side in the middle, and the other end edge of the movable base positioned on the other side. On the side, a folding pulley is provided, and the wire whose one end is fixed to the base frame side is first hung on the lower pulley of the sliding frame, then on the upper pulley of the leg member, and then laid on the lower pulley again. The wire is hung around a folding pulley, and then hung on the guide pulley to connect the other end of the wire to the winding device, and when the two bases are folded, the wire is wound up by the winding device. By pulling the upper pulley toward the lower pulley by tension, the leg member is extended downward from the sliding frame to raise the sliding frame and bend the shaft-attached connecting portions of the both bases in a bent manner, while A folding stage apparatus in which it is stopped when it has been raised to the required height, and the other end edge of the movable table is pulled up to the base frame of the fixed table by the subsequent winding of the wire and folded up. 2. A folding stage apparatus according to claim 1 of the utility model registration, characterized in that the leg member fitted to the sliding frame has wheels at its lower ends.