JP3903354B2 - Mobile bleachers - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is a telescopic type in which a plurality of floors each equipped with a plurality of chairs can be moved in a horizontal state between an advancing position shifted in a staircase pattern and a retracted position aligned in the vertical direction. In particular, it relates to the structure of the floor base.
[0002]
[Prior art]
As the conventional mobile bleachers as described above, for example, the ones shown in FIGS. 4 to 7 are known. As shown in FIG. 6, this mobile auditorium includes a plurality of floors 1 and legs 2 that support each of the floors 1 so as to be movable in a horizontal state. As shown in FIG. 3, a plurality of seat-standing chairs 3 mounted on each floor base 1 are provided.
[0003]
Here, as shown in FIG. 4 and FIG. 7, each floor base 1 includes a penetrating member (beam member) 4 made of a lip groove type steel material extending horizontally in the left-right direction of the chair 3, and the longitudinal length of the penetrating member 4. A plurality of arm members 5 having rear end portions coupled to a plurality of portions spaced in the direction and projecting horizontally from the penetrating member 4 toward the front of the chair. As shown in FIG. 5 (a) in a perspective view and in a cross-sectional view in FIG. 5 (b) as a floor material stretched over, two kinds of long and narrow floor panels 6 and 7 made of steel plates, and a ladder shape Chair support frame 8 and a connecting member 9 disposed at the front end, and each leg 2 has upper ends at two portions spaced in the longitudinal direction of the penetrating member 4. Two struts 10 that are connected to each other and extend downward from the penetrating material 4, and the rear end portion is connected to the lower end of each strut 10. It has two legs 11 that are joined together and extend in parallel with the arm material 5, and a moving roller 12 provided at the front end and the rear end of each leg 11, and reinforces the column 10. In order to do so, it has a brace material 13 which is disposed in an inclined manner and whose upper and lower ends are respectively coupled to the penetrating material 4 and the lower end of the column 10.
[0004]
In this movable seat, the length of the plurality of columns 10 is different for each floor 1 by the level difference between the floors, and the penetrating member 4 to which the upper ends of the columns 10 are coupled is used. As the portions are slightly deviated for each floor 1, the advancing position where the plurality of floors 1 are shifted stepwise as shown in FIG. 4 and FIG. 6 and the retracted position where they are aligned in the vertical direction. And can be moved by being driven by a floor driving device (not shown) in a horizontal state. Each chair 3 is driven by a chair drive mechanism (not shown), and when the floor 1 moves to the retracted position, the chair 3 falls forward to a horizontal posture along the floor panels 6 and 7, and the floor 1 advances. When moving to the position, it gets up to the use position shown in FIG.
[0005]
[Problems to be solved by the invention]
However, in such a conventional traveling bleachers, two of the arm members 5 are integrally joined to the support column 10 by welding and are connected to the penetrating material 4 via the support column 10. Since the interval between the columns 10 is slightly different for each floor base 1, the distance between the two arm members 5 coupled to the columns 10 is different for each floor base 1. For this reason, it is structurally impossible for the above-mentioned conventional mobile bleachers to take a setup in which the floor base 1 and the support 10 are separately assembled at the factory and assembled at the site. Therefore, there was an inconvenience that it took time and labor to assemble on site.
[0006]
[Means for solving the problems and their functions and effects]
An object of the present invention is to provide a mobile bleacher that advantageously solves the above-described problems. The mobile bleacher of the present invention moves a plurality of floors and the floors horizontally. Legs that support as possible, and a plurality of chairs mounted on each floor pedestal, each floor pedestal extending horizontally in the left-right direction of the chair, A plurality of arm members each having a rear end portion coupled to a plurality of parts spaced apart in the longitudinal direction of the material and projecting horizontally from the penetrating material in the front direction of the chair, and on the plurality of arm materials A plurality of struts that extend downward from the penetrating material, the leg portions being connected to the plurality of portions of the penetrating material, respectively, and upper ends thereof; A plurality of legs, each of which is connected to the lower end of the rear end portion and extends in parallel with the arm member, and the legs. Each having a moving roller provided at each of the front end portion and the rear end portion, and the lengths of the plurality of support columns are different from each other by the level difference between the floor supports for each of the floor supports. The portion of the penetrating material to which the upper end portion is coupled is slightly shifted for each of the floors, so that the plurality of steps of the floors are positioned between advancing positions where they are shifted in a staircase pattern and retreat positions where they are aligned vertically. In the telescopic movable seat, which can move in the horizontal state, all of the plurality of arm members are pivotally supported by the penetrating member without swinging the pillar member, and the swinging of the arm member is supported. The limiting position is defined to be adjustable .
[0007]
When such a moving seat is assembled, all of the plurality of arm members are directly coupled to the penetrating member without using a support column, so that the penetrating member horizontally extending in the left-right direction of the chair in advance at the factory. A plurality of arm members having rear ends connected to a plurality of parts spaced apart in the longitudinal direction of the material so as to protrude horizontally from the parts to the front of the chair, respectively, on the plurality of arm materials Each flooring is configured by stretching the flooring, and a plurality of chairs are installed on the flooring. Separately, the vicinity of the rear end of the leg is connected to the lower end of each column. It is possible to set up the whole moving bleachers by assembling the moving seats by combining the floor and legs on the site by providing moving rollers at the front and rear ends of the legs. It becomes. Therefore, according to the mobile bleachers of the present invention, the assembly work at the site can be performed easily and in a short time.
[0008]
Moreover, in the mobile bleachers of the present invention, all of the plurality of arm members are directly coupled to the penetrating material without using the support columns, so that all of the plurality of arm members may be used as common parts. Further, it becomes possible to make the pitch of the holes for attaching the floor material to the arm material common to the plurality of floor bases. Therefore, according to the traveling bleachers of the present invention, it is possible to increase the productivity of arm materials and floor materials.
[0009]
In the present invention, a plurality of the moving rollers may be provided in the front end portion and the rear end portion of the leg member in a line in the extending direction of the leg member. In the conventional mobile bleachers, from the standpoint that the load from the floor is mainly received near the rear end of the legs, there is only one moving roller provided at the front end of the legs, so When there is a joint on the floor to be moved forward and backward, there is a problem that the roller falls there and the movement resistance increases, so as described above, the moving roller is extended to the front end and the rear end of the leg. If a plurality of rollers are arranged side by side in the current direction, even if one roller at the front end or rear end comes to the joint position, the other rollers at the front end or rear end are supported on the floor and Since the roller is prevented from dropping into the joint, it is possible to prevent the movement resistance from increasing.
[0010]
【Example】
Embodiments of the present invention will be described below in detail with reference to the drawings. Here, FIG. 1 is a perspective view showing an embodiment of the mobile bleacher seat according to the present invention with floor materials and chairs omitted, and FIG. 2 is an exploded perspective view showing a method of assembling the mobile bleacher seat of the embodiment. FIG. 3 (a) is a cross-sectional view along the longitudinal direction of the arm material, showing the attachment structure of the arm material to the penetrating member of the moving seat of the embodiment, and FIG. 3 (b) shows the attachment structure. The rear view seen from the direction of arrow B in FIG. 11A, FIG. 10C shows the mounting structure, and the front view seen from the direction of arrow C in FIG. ) Is an exploded perspective view showing the structure of the arm material mounting bracket in the mounting structure, and FIG. 8E is an exploded perspective view showing the structure of the rear end portion of the arm material, which is the same as the conventional example in the figure. This part is indicated by the same reference numeral.
[0011]
FIG. 1 shows only two steps of the moving bleachers in the above embodiment, and this movable bleacher can also move in a horizontal state on a plurality of floors 1 and each of these floors 1. Further, as shown in FIG. 2, as in the conventional example shown in FIG. 7, a plurality of seat-standing chairs 3 (see FIG. 1) mounted on each floor base 1 are provided. (Not shown).
[0012]
As shown in FIG. 1, each floor pedestal 1 here also has a penetrating member 4 extending horizontally in the left-right direction of the chair 3 and a gap in the longitudinal direction of the penetrating member 4 as shown in FIG. 7. 2 and a plurality of arm members 5 that are respectively coupled to the rear end portions thereof and project horizontally from the penetrating member 4 in the front direction of the chair, as shown in FIG. As a floor material stretched over the material 5, as shown in a perspective view in FIG. 5A and a cross-sectional view in FIG. It has a ladder-like chair support frame 8 and a connecting member 9 arranged at the front end.
[0013]
In this embodiment, however, the penetrating member 4 is twisted in order to increase the torsional rigidity so as to prevent the lower end of the arm member 5 that is not integrally coupled to the support as will be described later. As shown in FIG. 3A to FIG. 3C and FIG. 3E, the arm member 5 is made of a square steel pipe as shown in FIG. The lower member 5a obtained by bending a steel plate into a groove shape and the upper member 5b of a flat steel plate are welded and joined. On the floor panels 6 and 7, a needle punch carpet 14 is laid as shown in FIG.
[0014]
In addition, each leg portion 2 here also has a corner that extends downward from the penetrating member 4 with its upper ends coupled to two portions spaced apart in the longitudinal direction of the penetrating member 4 as shown in FIG. Two struts 10 made of steel pipes, and two leg members 11 having a U-shaped cross-section extending in substantially parallel to the arm member 5 by being connected to the lower end portions of the struts 10 in the vicinity of the rear end portions. And moving rollers 12 provided at the front end portion and the rear end portion of the legs 11, respectively, and are inclined to reinforce the support column 10, with the upper and lower ends being the penetrating material 4 and the support column. A brace member 13 made of a square steel pipe is connected to each of the lower end portions of 10.
[0015]
In this embodiment, however, all of the plurality of arm members 5 are directly coupled to the penetrating member 4 without using the pillar member 10. That is, here, as shown in FIGS. 2 and 3, a bracket 15 is welded onto the upper member 5b of the rear end portion of the arm member 5, and the stepped arm member mounting bracket 16 is assembled from the steel plate. to pivotally supported by a bolt 26, the arm member mounting member 16 to Nukizai 4 by combining fixed in two bolts 17, and each arm member 5 is coupled to the beam member 4, the arm A stopper bolt 18 protrudes downward at the rear end portion of the member mounting bracket 16 (in FIG. 3A, at the right end portion thereof, in order to define the swing limit position of the arm member 5 and to level the arm member 5). The arm portion support roller 19 is provided on the step portion of the arm material mounting bracket 16 so that the upper arm portion 5 is movably supported so that the height can be adjusted. One of the two bolts 17 is welded and fixed to the front end of the arm member mounting bracket 16 and screwed into the other bolt 17. The nut 20 is fixed by welding so that the arm member 5 can be easily attached to the penetrating member 4 here.
[0016]
On the other hand, the upper end portion of the support column 10 is fixedly coupled to the penetrating member 4 with two bolts 17 in the same manner as the arm member mounting bracket 16, and the upper end portion of the brace member 13 is a box-shaped brace. The brace material mounting bracket 21 is coupled and fixed to the penetrating member 4 by two bolts 17 in the same manner as the arm material mounting bracket 16. The lower end of the brace material 13 is coupled to the lower end of the support column 10 with a single bolt 22. It should be noted that the arm member mounting bracket 16, the upper end portion of the support column 10, and the brace member mounting bracket 21 are respectively inserted and arranged in the penetrating member 4 in the respective portions of the penetrating member 4 and fixed thereto. the a round steel pipe 23 which is inserted, a fixing plate 24 for reinforcing the side surface of the beam member 4 together are welded to the side surface of the beam member 4 to fix the round steel pipe 23 into Nukizai 4 is provided.
[0017]
Further, here, as shown in FIG. 1, two moving rollers 12 are axially supported by being arranged in the extending direction of the leg material 11, two each at the front end part and the rear end part of the leg material 11. .
[0018]
Also in this mobile auditorium, the lengths of the plurality of columns 10 differ by the level difference between the floors for each floor 1, and the penetrating material 4 to which the upper ends of the columns 10 are coupled is also shown. As the portion is slightly shifted for each floor base 1, the above-mentioned multiple-stage floor bases 1 are moved forward in a staircase shape as shown in FIG. 1, and retracted positions (not shown) are aligned in the vertical direction. Can be driven and moved by a floor driving device (not shown) while being in a horizontal state, and the upper end of each column 10 is fixed to the back surface of the floor 1 in order to define the advance position. An advancing position adjusting bolt 25 that can come into contact with a contact member (not shown) is provided to be movable back and forth. Each of the chairs 3 is driven by a chair drive mechanism (not shown), and when the floor 1 moves to the retracted position, the chairs 3 fall forward to a horizontal posture along the floor panels 6 and 7, and the floor 1 is When moving to the advance position, it rises to the use position as shown in FIG.
[0019]
When the telescopic mobile seat of this embodiment having such a configuration is assembled, all of the plurality of arm members 5 are directly coupled to the penetrating member 4 without the support 10, so that the factory Thus, a plurality of arm members 5 are projected horizontally from a plurality of portions spaced in the longitudinal direction of the penetrating member 4 extending horizontally in the left-right direction of the chair 3 to the front direction of the chair 3. The rear end portions thereof are respectively coupled by arm material mounting brackets 16, and floor panels 6 and 7, a chair support frame 8, a connecting material 9, and a needle punch carpet 14 are stretched over the plurality of arm materials 5. In this way, each flooring 1 is configured, and a chair 3 is installed on the flooring 1. On the other hand, separately from the lower end of each support column 10, the vicinity of the rear end of the leg 11 is joined, Two moving rollers 12 are provided at the front and rear end portions of the material 11 to form the leg portion 2. In it is possible to adopt a setup that assembling an entire moving stand by combining them with floor bases 1 and leg 2. Therefore, according to the mobile bleachers of this embodiment, the assembly work at the site can be performed easily and in a short time.
[0020]
Moreover, in the traveling bleachers of this embodiment, all of the plurality of arm members 5 are directly coupled to the penetrating member 4 without going through the support column 10, so that all of the plurality of arm members 5 are shared. It is possible to make parts, and the floor pitches of the floor panels 6 and 7 as the flooring material, the chair support frame 8 and the jointing material 9 for the holes for attaching the arming material 5 to the hole material 5 can be made in a plurality of steps. It becomes possible to make them common. Therefore, according to the traveling bleachers of the present invention, the productivity of the arm material 5 and the floor materials 6, 7, 8 can be increased.
[0021]
Furthermore, in the traveling bleachers of this embodiment, two moving rollers 12 are arranged in the extending direction of the legs 11 at the front end and the rear end of the legs 11, respectively. Therefore, even if one roller 12 at the front end or rear end of the leg 11 comes to the joint position, the other roller 12 at the front end or rear end is supported on the floor, and the roller 12 on the ground surface. Is prevented from increasing in resistance to movement of the leg 2.
[0022]
In this example, the traveling bleacher seat welds a flange 26 to the end of the penetrating material 4 of the floor 1 as shown in the upper left end of FIG. By connecting, a plurality of chairs can be connected in the left-right direction.
[0023]
Although the present invention has been described based on the illustrated examples, the present invention is not limited to the above-described examples. For example, the type of flooring material, the number of arm materials and columns, and the number of moving rollers are described in the claims. It may be changed as needed within the scope of the description. In addition, the shape and structure of the chair, the cross-sectional shape of the penetrating material, and the connecting structure of the arm material and the pillar material to the penetrating material can be appropriately changed within the scope of the claims.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a perspective view showing an embodiment of a movable bleacher seat according to the present invention with floor materials and chairs omitted.
FIG. 2 is an exploded perspective view showing a method for assembling a moving seat in the embodiment.
FIG. 3 is an explanatory view showing a structure for attaching an arm member to a penetrating member of a moving bleacher seat according to the embodiment.
FIG. 4 is a perspective view showing a structure of a conventional mobile seat.
FIG. 5 is an explanatory view showing the floor material of the conventional mobile bleachers.
FIG. 6 is a perspective view showing the entirety of the conventional mobile bleacher seat.
FIG. 7 is a perspective view showing only one stage of the conventional mobile seat.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Floor base 2 Leg part 3 Chair 4 Penetration material 5 Arm material 6, 7 Floor panel 8 Chair support frame
10 props
11 Leg material
12 Moving roller

Claims (2)

A plurality of floors (1), legs (2) that support each floor so as to be movable in a horizontal state, and a plurality of chairs (3) mounted on each floor Prepared,
Each of the floor pedestals has a penetrating member (4) extending horizontally in the left-right direction of the chair, and a plurality of parts spaced apart in the longitudinal direction of the penetrating member, and a rear end portion thereof coupled to the penetrating member. A plurality of arm members (5) projecting horizontally from the front of the chair, and floor materials (6, 7, 8) stretched over the plurality of arm members,
The leg portion is connected to the plurality of portions of the penetrating material with upper end portions respectively extending downward from the penetrating material, and the rear end portion near the lower end portion of the supporting column. And a plurality of legs (11) extending in parallel with the arm members, and moving rollers (12) respectively provided at the front end portion and the rear end portion of the leg members. ,
The lengths of the plurality of struts are different from each other by the level difference between the floor bases, and the portion of the penetrating material to which the upper ends of the plurality of pillars are coupled is slightly shifted from one floor base to the other. Thus, in the telescopic mobile bleachers where the plurality of floors can move in a horizontal state between the advanced position shifted in a stepwise manner and the retracted position aligned with each other in the vertical direction,
All of the plurality of arm members (5) are pivotally supported by the penetrating member (4) so as to be able to swing without passing through the pillar member (10) , and the swing limit position thereof is adjustable. A moving bleacher, characterized by   A plurality of said moving rollers (12) are provided side by side in the extending direction of the legs, respectively, at a plurality of front ends and rear ends of the legs (11), respectively. The listed moving bleachers.

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