JPH035641Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is a wiring support device for retractable staircase-like bleachers for a wide-area movable platform with two horizontal rows of bleachers installed on each tier. It is related to.

[Conventional technology]

In recent years, in order to use the interior of gymnasiums for multiple purposes, it has become common for gymnasiums to install retractable and movable tiered seats on a portion of the floor near the wall. This viewing seat is formed by interconnecting a plurality of movable platforms with viewing chairs of increasing height so that it can be moved by expansion and contraction in the front and back direction.
When the spectator seats are used, they are pulled out one after another starting with the lowest movable platform at the front, and the entire structure is extended into a dais-like structure, so that a large number of spectators can sit on the chairs on each movable platform. Also, when not in use,
Contrary to the above, by moving backwards from the first movable bed to the rear movable bed, the entire structure is reduced to a vertical shelf under the highest movable bed. Therefore, it is configured so that it can be stored in a storage recess provided on the wall side of a building.

In this case, the chairs installed on the movable platform of each tier are raised and lowered by the driving force of a motor etc. before and after using the bleachers. Requires electricity to turn on. Therefore, under each stage of the movable platform,
Electric wires are installed to supply electricity to the above demand destinations. At that time, the movable platform on each stage of the bleachers expands and contracts before and after use, so the above-mentioned electric wires are also extended by the length before and after the movable platform, which extends like a dais.
In addition, when reducing all the movable floor platforms to form a vertical shelf below the highest movable floor platform, there are essential conditions for wiring, such as bending them back and forth to a state where there is no length. .

For the reasons mentioned above, this type of electric wire cannot be fixedly wired under the movable platform of each tier, so it must be installed horizontally between the supports of each tier, perpendicular to the direction in which the bleachers expand and contract. This will be done using the related members of the beam, which is constructed in a shape. In this wiring, the electric wires do not come into sliding contact with the floor when the seats are reduced in the movable platform on the rear side, which has a considerable height from the floor, but the movable platform on the first half is far away from the floor. Therefore, there is a risk of sliding contact with the floor surface during the above reduction.

At that time, in normal bleachers, only one horizontal row of chairs is installed on each tier, so the length from front to back of each movable platform is not very long. Therefore, the electric wires wired for supplying power to each movable platform do not need to be very long at each stage. However, in special bleachers, two horizontal rows of chairs are installed on each tier, so each movable platform of this kind of bleachers has
The front and rear lengths are set considerably long, creating a wide area surface.
As a result, the electric wires used to supply power to each movable platform were of considerable length at each stage.

[Problem that the invention attempts to solve]

As a result of the above, the following problems have arisen with this type of wide-area movable bleachers.

(1) In a wide-area movable platform with two horizontal rows of viewing chairs, the length of the electric wires at each tier is quite long, so when storing these seats, the movable platform should be retreated from the front row in order. When all the movable floor platforms are reduced to form a vertical shelf below the highest movable floor platform, the electric wires connected to the first half of the movable floor platform, which are lower in height, may slide against the floor surface and cause a large amount of damage. The wires were subjected to wear and tear, which shortened their useful lifespan.

[Means for solving problems]

This idea solves the above-mentioned problems of the conventional technology, and by assembling an extendable wiring gutter that extends under the movable platform of each tier and can be folded in half, it is possible to easily store the seats. To provide a wiring support device for a retractable staircase-like bleachers, in which a movable floor table is reduced without the electric wires coming into sliding contact with the floor surface, thereby extending the durable life of the electric wires. The feature of this invention is that the lower tier that supports the above-mentioned movable platform is used in the bleachers, which can be moved by extending and contracting in the front and back direction by interconnecting movable platforms made up of multiple tiers of increasing height. A mounting plate is attached to a part of the standing member, and a relay member is attached to a part of the upper standing member with a receiving member attached to the upper part of one side and an arm to the rear lower part. Between the mounting plate and the upper arm, a wiring gutter is installed so that it can be bent horizontally in a dogleg shape. According to an aspect of the present invention, electric wires for supplying power to the above-mentioned movable platform are housed and supported in the wiring gutter of each stage.

[Effect]

With the above configuration, if a series of electric wires is housed in the wiring gutter of each tier and wired to the rear of the bleachers, the movable platform on the front half of the bleachers will not be too far from the floor. Even if there is no cable, the electric wires on the front half are in an expandable wiring gutter that is assembled between the upstanding members on the front side and the upright side on the rear side, and this wiring gutter is also connected to the storage area of the bleachers. At times, when the upright member on the front side retreats to the position directly below the upright member on the rear side, it bends into a completely two-fold state, so
The electric wires housed inside can be easily and reliably prevented from coming into contact with the floor surface. In addition, when using the bleachers, when the movable platform is sequentially pulled out from the frontmost movable platform to the front floor and extended like a dais, the above wiring gutter is connected to the standing member on the front side and the rear side. Even if the standing member moves to a position away from the movable platform by the full amount of drawer, it will not be in a linearly extended state at this point, but will be in an extended state with some margin due to the dogleg-shaped posture. Therefore, it is possible to smoothly avoid the risk of tension being applied to the electric wires in the wiring gutter when the bleachers are extended.

〔Example〕

Hereinafter, embodiments of this invention will be described based on the accompanying drawings.

First, to explain the configuration, as partially shown in Figure 6, when in use, the entire bleachers A are moved onto the floor surface C in front, and two horizontal rows of bleachers B are installed on each upper surface. Mobile platform 4 with multiple tiered supports 3
are sequentially pulled out from the frontmost side along with the base 1 of each stage by the rolling of the rollers 2 in a mutually connected state, and the whole is extended into a pedestal shape, and when not in use, it is different from the above. On the contrary, from the frontmost stage side, return to the bottom of the highest stage movable platform 4 one by one, and gather the whole thing together in a reduced state with a vertical shelf shape.
In the telescopic stair-shaped bleachers in which the movable platform 4 in this state is stored in a storage recess (not shown) behind it, the left and right sides of each stage are Beams 6, which serve as cross members, are installed horizontally between the pillars 3, and the beams 6, which will be located at the main parts of each stage when the seats A are extended, are equipped with the following wiring supports. Device D
is installed.

The above wiring support device D is configured as follows. That is, as shown in FIGS. 1 to 5, this wiring support device D is attached to a connecting member 7 erected at the rear end of the floor girder 5 on the lower stage side, for example, in the second stage movable floor platform 4. The mounting plate 9 to be mounted, the relay member 14 to be mounted to the coupling member 13 erected at the rear end of the floor girder 5 on the upper stage side, and the mounting plate 9 and the relay member 14 are assembled so as to be expandable and foldable. It is composed of wiring troughs 20 and 21.

First, when installing the wiring support device D, the base structure of the floor girder 5 will be explained with the second stage movable floor platform 4 as the main component.As shown in FIGS. The floor girder 5 () at the position where the wiring support device D is installed on the movable floor stand 4 in the step is:
When the spectator seat A is extended, its front end will be located on the rear end of the floor girder 5 ( ) in the first stage fixed to the beam 6 ( ) on the lower stage side.
In addition, the rear end of the floor girder 5 () passes under the beam 6 () installed between the columns 3 of the second stage, and connects the joint installed at the rear end of this beam 6 (). This second beam 6 ( ) via the member 13
It is fixedly installed. The rear end of the floor girder 5 () at the position where the wiring support device D is installed in the first stage similarly passes under the beam 6 () installed between the supports 3 of the first stage. , this beam 6()
It is fixed to the first stage beam 6 ( ) via a coupling member 7 erected at the rear end.

Under the above preconditions, the wiring support device D of this invention is configured as follows. That is, as shown in FIGS. 1 to 5, the mounting plate 9 that is attached to the first-stage connecting member 7 is attached to the lower-stage floor girder 5 () that supports the first-stage movable floor platform 4.
In order to attach it to the rear upper part of the connecting member 7 installed upright, a band-shaped plate that matches the width of this rear side is bent into a U-shape, and a rotating shaft to be described later, such as a support bolt, is attached to the upper and lower surfaces of the band-shaped plate. , 22 is provided, and the above-mentioned coupling member 7 is provided on the vertical surface.
There is a hole for attaching it to. This mounting plate 9 is in contact with the position of the bottom nut 8 which is firmly inserted into the hole 7a provided in the rear upper part of the coupling member 7, and the washer 10 and spring washer 11 are inserted through the hole in the vertical surface thereof. Bolt 12 inserted through
It is mounted in a vertical arrangement with a tightening of .

Next, the relay member 14 to be attached to the second-stage coupling member 13 is formed of a short, thin square piece of material, and has a vertical U-shape on one side upper part to be attached to the side surface of the coupling member 13. A receiving member 15 having a bolt hole 15a on its surface is welded, and an arm 16 of a short channel type with a bolt hole 16a through which a rotating shaft 22 is inserted on its upper and lower surfaces is welded to the rear lower part.
is welded. And this relay member 14 is
A receiving member 15 is placed in contact with the bolt holes 13a passing through both sides of the coupling member 13, and the bolts 17 are inserted into both bolt holes 13a and 15a, and fitted together with the spring washers 18 into the threaded portions thereof. It is mounted in a vertical arrangement by tightening the matching nuts 19.

Furthermore, wiring troughs 20 and 21 are extendably assembled between the above-mentioned mounting plate 9 and the arm 16 of the relay member 14.
is made of a channel-type material that can be inserted into the mounting plate 9 and the arm 16 described above, and both of them are designed to support the first stage beam 6() and the second stage when the bleachers A are extended. It is formed to be somewhat longer than the length that bisects the beam 6 ( ).
Each end of one wiring gutter 20 is cut into a U-shape, and bolt holes 20a through which the rotating shaft 22 can be inserted are provided in the upper and lower surfaces thereof. The rear end of the other wiring gutter 21 is cut into a U-shape similar to that described above, and a bolt hole 21a through which the rotating shaft 22 can be inserted is provided in the upper and lower surfaces thereof. Further, in order to connect the above-mentioned one wiring gutter 20 and the ends to the upper and lower parts of the front end, other parallel members are welded in a protruding manner to this end face, and bolts of the same diameter are attached to the upper and lower faces of this member. A hole 21a is provided therethrough. The wiring troughs 20 and 21 formed in this manner have bolt holes 20 and 20 concentrically aligned with each other by fitting both connection ends.
After inserting the rotating shaft 22 into the screws 21a and 21a, the nut 23 is hooked onto the screw portion exposed outwardly at the lower end, so that the shaft 22 is extended into a dogleg shape as shown in FIG.
Further, as shown in FIG. 4, they are connected and assembled into a unit so that they can be bent into two or extended.

Wiring gutter 20, 2 assembled into a lump as described above
1, the front end thereof is inserted between the upper and lower surfaces of the mounting plate 9 attached to the lower coupling member 7, and the rotating shaft 22 is inserted into both bolt holes 9a, 20a, and the outer part of the lower end thereof is inserted. A nut 23 is hooked onto the threaded portion to allow for horizontal swinging. Further, the rear end portion is inserted between the upper and lower surfaces of the arm 16 attached to the upper coupling member 13 via the relay member 14, and the rotating shaft 22 is inserted into both bolt holes 16a and 21a.
A nut 23 is hooked onto the outer threaded portion of the lower end, and the wire support device D is connected so as to be able to swing in the horizontal direction. There is.

Note that the wiring support device D according to this aspect is similarly installed under each movable platform 4 located on the front half side of the first and third stages including at least the second stage described above. And this wiring support device D of each stage
As shown in FIG. 2, electric wires 24 for supplying electric power to the demand side of each stage are housed inside in a support position that can be folded in half. In this case, the installation positions of the adjacent wiring support devices D at each stage should be spaced apart from each other to the left and right, and the directions in which the wiring troughs 20 and 21 are bent into a dogleg shape should be opposite to each other. Thereby, the electric wire 24 is configured to be stored and supported smoothly. Furthermore, the electric wires 24 in each stage are connected from the beginning to the end on the lower side and the beginning on the upper side, and the electric wires 24 (not shown) located between the devices D are
The continuous state is maintained by fixing the midway portions of the ends of both devices D to the beam 6 at the same position.

With the above configuration, when a series of electric wires 24 are housed in the wiring gutters 20 and 21 of each stage as shown in Fig. 2 and routed sequentially to the rear side of the bleachers A, ,,) Movable platform 4
The electric wires 24 on the first half side (,,) are connected to the lower stage when the movable floor platform 4 of the second stage is mainly explained. Coupling member 7 adjacent to side beam 6
The mounting plate 9 is attached to the upper beam 6, and the arm 16 is attached to the coupling member 13 adjacent to the upper beam 6 via the relay member 14. This wiring gutter 20,2
1 is bent into a completely two-fold state as shown in FIG. 4 when the connecting member 7 on the lower tier side retreats to the position directly below the connecting member 13 on the upper tier side when the bleachers A are stored. Therefore, it is possible to easily and reliably prevent the electric wire 24 housed inside from coming into contact with the floor surface C.

In addition, when using spectator seat A, the front row ()
When each movable floor base 4 is sequentially pulled out from the movable floor base 4 onto the floor surface C in front of it and extended as a whole into a pedestal shape, the wiring troughs 20 and 21 are connected to the lower beam 6 ( ) and the upper beam 6() move to a position separated by the entire amount of pullout of the movable bed 4, they will not be in a linearly extended state at this point. In other words, the wiring troughs 20 and 21 are connected to the lower beam 6 which has been extended to the above state from the beginning.
() and the upper beam 6 (), so when the seats A are pulled out, they are maintained in an extended state with ample room due to the dogleg-shaped posture. , it is possible to smoothly avoid the risk of tension being applied to the electric wires 24 housed in the wiring troughs 20 and 21 when the bleachers A are extended.

In the above embodiment, the wiring support device D was installed at least under the movable platform 4 on the front half side (,,), but the wiring support device D of this invention is different from the above embodiment. The wiring support device D may be installed under the movable platform 4 of all stages without limitation. In this case, all the electric wires 24 will be uniformly stored in the wiring gutter 20, 21 regardless of the height of the tier, so that the entire amount of electric wires 24 is guaranteed to be supported uniformly, and the floor There are advantages such as being able to eliminate wear and tear in areas other than sliding contact with surface C.

[Effect of idea]

This idea is based on the lower tier side erected member that supports the above-mentioned movable platform in a spectator seat that can be moved by expanding and contracting in the front and back direction by interconnecting movable platforms with multiple stages of increasing height. Attach a mounting plate to the part, and attach a relay member to a part of the upper standing member with a receiving member attached to the upper part of one side and an arm to the rear lower part, and attach the mounting plate of the lower part and the upper part. Between the side arms, a wiring gutter is installed so that it can be bent horizontally in a dogleg shape, and it can be expanded and folded by inserting a rotating shaft at each end. The present invention is characterized in that electric wires for supplying power to the movable platform are housed and supported in the wiring gutter. Therefore, the electric wires of each tier are stored in an expandable wiring gutter that extends under the movable platform of each tier or folds in half between the top and bottom of the retracted position, so when the seats are stored, the electric wires are placed on the floor. The movable bed can be reduced without sliding on the surface, which has the effect of extending the life of the electric wire.

[Brief explanation of the drawing]

Figure 1 is a plan view showing the wiring support device of this invention installed under the second stage of the movable bed; Figure 2a
is a side view of the same device taken along line E-E in Figure 1, Figure 2b is a detailed view of the wiring gutter at section F in Figure 1,
Figure 3 is a view in the direction of arrow G in Figure 1, Figure 4 is a view of H in Figure 1.
Fig. 5 is an exploded perspective view of the wiring support device according to this invention, and Fig. 6 is a partial side view of the bleachers equipped with the device. It is. 4...Movable floor stand, 5...Floor stand, 6...Beam, 7, 13...Connecting member, 9...Mounting plate, 14
... Relay member, 15 ... Receiving material, 16 ... Arm, 20, 21 ... Wiring gutter, 22 ... Rotating shaft, 2
4... Electric wire, A... Spectator seats.

Claims (1)

[Scope of utility model registration request] In a spectator seat that can be moved by expanding and contracting in the front-rear direction by interconnecting movable platforms made up of multiple stages that increase in height, a mounting plate is installed on a part of the lower erected member that supports the movable platform. is installed, and a relay member is attached to a part of the upper erected member, with a receiving member attached to the upper part of one side and an arm attached to the rear lower part. In this method, a wiring gutter is assembled so that it can be bent in a horizontal direction, and is expandable and foldable by inserting a rotating shaft at each end. A wiring support device for a retractable staircase-like bleachers, characterized in that the electric wires for supplying electric power to the movable platform are housed and supported.