JPH07324501A - Telescopic staircase structure - Google Patents

Abstract

(57) [Abstract] [Purpose] It is possible to satisfy all customers without disturbing the line-of-sight of a seated virtual person at all steps without the need to manually prepare the seats. To obtain a retractable staircase structure that can increase the number of seats and reduce the storage capacity during storage. [Structure] The height of the left and right vertical columns and the horizontal width of the horizontal beam are changed in a stepwise manner, a floor with a step is provided on the arm fixed to the bottom bottom of the beam, and a bleacher is provided on the floor. In a multi-tiered retractable staircase-like pedestrian structure, the steps are divided into at least two groups, and the steps of the groups above are gradually increased from the steps of the group on the basal plane side, and seats in each tier The virtual person's line of sight can reach the viewpoint in front of the bottom without being obstructed by the top of the virtual person in front.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a retractable staircase-like bleaching seat structure installed in a hall, gymnasium, stadium or the like.

[0002]

2. Description of the Related Art In a conventional telescopic staircase structure, the height of the left and right vertical columns and the horizontal width of the horizontal beam member are sequentially varied in a staggered manner, and a step is formed on an arm fixed to the lower bottom surface of the beam member. A floor surface is provided, and a bleaching seat is provided on the floor surface so that it can be extended and retracted in the front-rear direction. When the bleaching seat is unfolded, the whole is extended, and when it is not unfolded, it is stored in a storage place (for example, Japanese Patent Laid-Open No. -21775 gazette description).

[0003]

However, for example,
FIG. 2 shows an example of a conventional retractable staircase structure (a).
FIG. 4 is a schematic cross-sectional view showing a state where the bleachers are deployed (b) when stored in a storage place. FIG. 4 is a schematic cross-sectional view showing another example of a conventional retractable staircase structure (a) when the seats are deployed and (b) when stored in a storage room. FIG. 6 is a schematic cross-sectional view showing another example of a retractable staircase-shaped bleaching seat structure (a) when the bleachers are deployed and (b) when stored in a storage place. FIG. 7 is a schematic cross-sectional view showing another example of a conventional retractable staircase structure (a) when the seats are deployed (b) when stored in a storage room. 12 shown in FIG.
In the case of a multi-tiered bleacher structure, the distance m between the upper surface of the stage 13 and the base surface is 800 mm, and the distance d between the lowermost front end and the front front end is d.
0 = 1200 mm, front end distance d of each stage d = 950 mm, viewpoint s on the stage is n = 1000 mm from the stage upper surface
Also, when the distance from the front end of the stage is set to n = 1000 mm, the step h1 on the floor where the seats are installed is constant at 250.
Since it is taken as mm, the line of sight p of the virtual person 11 sitting on the 11th and 12th rows from the bottom is the virtual person 11 immediately before.
It was not possible to reach the viewpoint s on the stage 13 due to the top of the human being (the Roman numeral described before each virtual person 11 in each of the following figures indicates the number of steps). In this case, the eyes 12 of the virtual person 11
Is assumed to be 1100 mm above the floor and the virtual person's crown is 1220 mm above the floor. Also shown in FIG.
In the case of a multi-tiered bleacher structure, the viewpoint s on the stage 13 is shown in FIG.
When it is taken in the same position as above, since the step h1 on the floor where the seats are installed is set to a constant 250 mm,
Virtual person sitting on the 11th to 15th floor seats from the bottom
The line-of-sight p was blocked by the top of the virtual person 11 immediately before, and the viewpoint s on the stage 13 could not be reached.

In the case of a 20-tiered bleacher structure shown in FIG. 6 (the actual bleacher is 19 tiers because an evacuation passage is required on the way), the viewpoint s on the stage 13 is set to the same position as in FIG. In this case, since the step h1 on the floor where the seats are installed is set to a constant 250 mm, the 11th to 2nd steps from the bottom.
The line-of-sight p of the virtual person 11 sitting on the 0th stage bleacher was blocked by the top of the virtual person 11 immediately before, and the viewpoint s on the stage 13 could not be reached. Further, in the case of the 20-tiered bleacher structure shown in FIG. 7, when the viewpoint on the stage 13 is set to the same position as in FIG. 2, the lower 4 tiered bleachers are manually attached to the base surfaces x, x. By preparing side by side, the first step from the bottom ~
The step h1 on the floor with the 15th stage seats is fixed at 25
At 0 mm, the line of sight p of the sitting virtual person 11 is not obstructed by the top of the virtual person 11 immediately before, and the stage 1 at the front of the lowermost stage
It was possible to reach viewpoint s above 3, but automation could not be measured. INDUSTRIAL APPLICABILITY The present invention does not require manual preparation of the bleachers and reaches the viewpoint on the stage or the arena in front of the lowest stage without the line of sight of the sitting virtual person being obstructed by the top of the virtual person immediately in front of all stages. It is possible to obtain a telescopic staircase structure that can satisfy all customers, increase the number of seats when the seats are deployed, and reduce the storage volume when stored. To aim.

[0005]

In order to achieve the above object, the present invention has a structure in which the height of the left and right vertical columns and the horizontal width of the horizontal beam member are sequentially changed in a stepwise manner, and the height is fixed on the lower bottom surface of the beam member. In a multi-tiered retractable staircase-like pedestrian structure in the front-rear direction, in which a floor with a step is provided and a bleacher is provided on the floor, the step is divided into at least two groups, and the step of the group on the base bottom surface side Telescopic stairs that gradually increase the steps of the upper group so that the line of sight of a virtual person sitting on the bleachers on each level can reach the viewpoint in front of the bottom level without being obstructed by the virtual person's crown immediately in front. It was solved by the structure of the bleachers.

[0006]

In the present invention, the steps of the telescopic staircase-type bleachers are divided into at least two groups, and the line of sight of the virtual person seated in each stage of the bleachers is not obstructed by the top of the virtual person immediately in front of the lowermost stage. In order to reach the viewpoint on the stage or arena, etc., it is achieved by a simple configuration that sequentially increases the steps of the group above the base surface side, and the steps are the number of steps and the front end of the bottom step. And the distance between the front ends of the stage or arena, the front end spacing of each stage, the viewpoint position on the stage or arena, and the steps of the group on the base bottom side You can choose to. Usually, it is desirable in design and manufacturing that the step difference of the group on the base bottom side is 200 mm and the step difference of the upper group is 250 mm, and in the case of the third group, the step difference of the upper group is 300 mm.

[0007]

Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic cross-sectional view showing (a) a bleaching seat unfolded and (b) a stowage housed in a retractable staircase-like bleaching seat structure according to an embodiment of the present invention. FIG. 3 is a schematic cross-sectional view showing another embodiment of the retractable staircase-like bleaching seat structure (a) when the bleachers are deployed and (b) when stored in a storage room. FIG. 5 is a schematic cross-sectional view showing another embodiment of the telescopic staircase structure according to the present invention, (a) when the seats are deployed and (b) when the seats are stored.

FIG. 1 shows the case of a telescopic staircase structure 1 of 12 steps. A roller cover 9 having a U-shaped cross-section having a plurality of parallel wheels 10 with a left-right spacing, square struts 2 and 7 erected vertically at the rear end of the roller cover 9, and the upper ends of the struts 2 A beam member 3 having a U-shaped cross-section that is fixed horizontally and a plate-like arm 4 reinforced with ribs on the lower bottom surface of the beam member 3 protrudes in the horizontal direction, and the floor surface is parallel to the beam member 3 on the arm 4. A foldable bleaching seat 6 is provided on the floor surface 5, and the height of the left and right vertical columns 2 and the horizontal width of the horizontal beam members 3 are sequentially changed in a staggered manner, and 12 steps of forward and backward retractable stairs are provided. The auditorium structure 1 is configured. FIG. 1 (a) shows the unfolding of the bleachers 6 (b),
The hangar 8 is located at the rear of the hall with the bleachers 6 folded.
Is shown when stored in. Each step is divided into two groups, and 6 steps of the base surface x and the group on the x side have a step h2 = 200 mm, and 6 steps of the upper group have an increased step h1 = 250 mm. The distance m between the upper surface of the stage 13 and the base surface, the distance d0 between the lowermost front end and the front end of the stage, the front end spacing d of each stage, and the position of the viewpoint s on the stage are set in the same manner as shown in FIG.
It is possible to reach the viewpoint s on the stage in front of the lowermost stage without all the lines of sight p of the virtual person 11 seated on the bleachers 6 on each level being obstructed by the top of the virtual person 11 immediately before.

FIG. 3 shows the case of a telescopic staircase structure 1 with 15 steps of retractable stairs. Each element constituting the telescopic staircase structure 1 is designated by the same reference numeral as that shown in FIG. FIG. 3A shows a state where the bleachers 6 are unfolded, and FIG. 3B shows a state where the bleachers 6 are folded and stored in a storage 8 provided at the rear of the hall. Each step is divided into three groups, and 6 steps of the base plane x and the group on the x side are stepped h2 = 2.
The height is set to 00 mm, the step height h1 of the five middle groups is set to 250 mm, and the step height h3 of the four upper groups is set to 300 mm. The distance m between the upper surface of the stage 13 and the base surface, the distance d0 between the front end of the lowermost stage and the front end of the stage, the front end distance d of each stage, and the viewpoint s position on the stage are taken in the same manner as shown in FIG. All the sight lines p of the sitting virtual person 11 to 6 can reach the viewpoint s on the stage in front of the lowest stage without being blocked by the crown of the virtual person 11 immediately before.

FIG. 5 shows a case of a retractable staircase-type bleaching seat structure 1 having 20 stages (the actual bleaching stage is 19 stages because an evacuation passage is required on the way). Each element constituting the telescopic staircase structure 1 is designated by the same reference numeral as that shown in FIG. FIG. 5A shows the bleaching seat 6 when unfolded, and FIG. 5B shows the bleaching seat 6 folded and stored in a storage room 8 provided in the rear part of the hall. Each step is divided into three groups, and 6 steps of the base plane x and the group on the x side are stepped h2 = 2.
The height of the middle group is 5 steps, h1 = 250 mm, the height of the upper group is 9 steps, h3 = 300 mm, the upper group is divided into two, and the lower group is divided into 4 groups, and the base group h2 and the middle group are h2 = 300 mm. The group h1 is stored in series, and the remaining upper five groups are separately stored. The reason why the nine steps of the upper group h3 is divided into two is to solve the problem of the strength of the column when the number of steps increases, and it may be integrated if a reinforcing material is used. Distance m between the top surface of the stage and the base surface, distance d0 between the front end of the lowest stage and the front end of the stage, front end spacing d of each stage, viewpoint s on the stage
The position is taken as shown in Fig. 2, and the bleachers 6 on each stage
It is possible to reach the viewpoint s on the stage in front of the lowest stage without all the lines of sight p of the seated virtual person 11 to be blocked by the top of the virtual person 11 immediately before.

[0011]

According to the present invention, with a simple structure,
It is possible to reach the viewpoint on the stage in front of the lowest stage or the arena, etc. without the sight line of the seated virtual person being obstructed by the virtual person's head in front of him at all steps without requiring manual preparation of the bleachers. Can satisfy the customer of
It is possible to increase the number of seats when the bleachers are unfolded, and to reduce the storage volume when stored.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view showing (a) a bleaching seat unfolded and (b) a stowage housed in a retractable staircase-shaped bleaching seat structure according to an embodiment of the present invention.

[FIG. 2] (a) of an example of a conventional retractable staircase structure
FIG. 4 is a schematic cross-sectional view showing a state where the bleachers are deployed (b) when stored in a storage place.

FIG. 3 is a schematic cross-sectional view showing (a) when the bleachers are deployed and (b) when the bleeders are stored in the retractable staircase structure according to another embodiment of the present invention.

FIG. 4 is a schematic cross-sectional view showing another example of a conventional retractable staircase structure (a) when the seats are unfolded and (b) when stored in a storage room.

FIG. 5 is a schematic cross-sectional view showing (a) a bleaching seat unfolded and (b) a stowage housed in a retractable staircase-shaped bleaching seat structure according to another embodiment of the present invention.

FIG. 6 is a schematic cross-sectional view showing another example of a conventional retractable staircase structure (a) when the seats are deployed and (b) when stored in a storage room.

FIG. 7 is a schematic cross-sectional view showing another example of a conventional retractable staircase structure (a) when the seats are deployed and (b) when stored in a storage room.

[Explanation of Codes] 1 Stretchable staircase structure 2, 7 Pillars 3 Beams 4 Arms 5 Floor 6 Seats 8 Storage 9 Roller cover 10 Wheels 11 Seated virtual person 12 Seated virtual person 13 Stage d0 Maximum Distance between front end of lower stage and front end of stage d Front end spacing of each stage h1, h2, h3 Step m Distance between top surface of stage and base bottom surface n Distance from top surface of stage on viewpoint and front end of stage p Line of sight s Stage Viewpoint x, x Base plane

Claims (1)

[Claims] 1. The height of the left and right vertical columns and the horizontal width of the horizontal beam member are sequentially changed in a stepwise manner, and a floor surface having a step is provided on an arm fixed to the lower bottom surface of the beam member, and viewing is performed on the floor surface. In a front-back telescopic staircase structure with a plurality of stages provided with seats, the step is divided into at least two groups, and the steps of the groups above the group on the base bottom side are sequentially increased to increase the steps of each step. A retractable staircase-like bleaching seat structure, characterized in that a line of sight of a virtual person sitting on the bleaching seat can reach a viewpoint in front of the lowest stage without being obstructed by the top of the virtual occupant immediately before.