JP2005273357A - Movable staircase of swimming pool equipped with movable floor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To allow either of the installation and noninstallation of a handrail to dispense with the installation of a vertical rod for each tread even if the handrail is installed, to eliminate a connection between the treads, and to prevent ascent/descent from being obstructed by a torsion of a tread, even if the handrail is laterally pressed in, in a movable staircase which is installed on a poolside so that a person can ascend/descend by using a movable floor ascendably/descendably installed in a pool and which can vertically swing by following the ascent/descent of the movable floor. <P>SOLUTION: The treads 6 are turnably journaled to long rods 3a and 3b at both ends at regular intervals, so that a parallelogrammatic link mechanism can be composed of the long rods 3a and 3b and the treads 6. A roller 7, which lands on the movable floor 2, is journaled to a lower end of the long rod 3a, and the movable staircase 1 is elevated or lowered by following the ascent/descent of the movable floor 2. The handrail 8 is attached to a proper place of the long rod 3a via a support 9. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a movable staircase provided on a pool side so as to ascend and descend on a movable floor which is installed in a pool so as to be movable up and down.

As a movable staircase of this type, Patent Document 1 listed below includes a fixed frame fixed by an anchor toward the pool side, a pair of upper and lower handrail frames pivotally supported on the upper and lower ends of the fixed frame on the pool side, A vertical frame that connects the upper and lower handrail frames at regular intervals to form a parallelogram link mechanism together with the upper and lower handrail frames, a tread that has a center part fixed to the lower end of each vertical frame perpendicular to the vertical frame, There is disclosed a movable staircase that is composed of a roller that is pivotally supported by a lower end of a handrail frame on the side and that is placed on a movable floor that can be moved up and down in a pool, and that can be lifted or lowered as the movable floor is raised and lowered.
JP 2000-104413 A

  The above-mentioned movable staircase requires a handrail consisting of a vertical frame standing for each tread plate and a handrail frame connecting the upper ends of the vertical frames, and the upper handrail frame is located in the side. When pushed in the direction or outward, it is expected that the vertical frame will be twisted and the tread will be twisted, making it difficult to go up and down.

  Further, since the fixed frame is fixed to the pool side with an anchor, the movable staircase cannot be moved to a desired position.

  A first object of the present invention is to install a handrail in a movable staircase that is installed on a pool side to move up and down by a movable floor that is installed so that the pool can be raised and lowered, and that turns up and down following the movement of the movable floor. It is also possible to provide it. In this case, it is intended to prevent the tread from being twisted even if the handrail is pushed to the side, and hindering the up and down movement. This makes it possible to easily move the movable staircase to a suitable place on the poolside.

The invention according to claim 1 relates to a movable staircase that achieves the first object, and is installed on the pool side to ascend and descend on a movable floor that can be moved up and down in a pool. It is a movable staircase that swivels up and down, with two long rods that are pivotally attached to the pool side on both the left and right sides, and both ends connected to two long rods at regular intervals, And a stepping plate that constitutes a parallelogram link mechanism.
The invention according to claim 2 relates to a movable staircase that achieves the second object. In the movable staircase of the invention according to claim 1, the horizontal axis bearing that pivotally mounts each long rod is a pool side. It is attached by a bolt that is screwed into a bag-like or sleeve-like nut embedded therein.

  According to the first aspect of the present invention, the handrail may or may not be provided, and even if it is provided, it is not necessary to provide a vertical fence for each tread board, and it is not necessary to connect the handrail and the tread board. Even if it is pushed in to the side, it is possible to prevent the tread from being twisted and hindering up and down. In addition, the parallelogram composed of the eaves and the treadle is difficult to deform because the length of each link of the link mechanism that constitutes the parallelogram is short. You will be able to do it smoothly.

  According to the invention of claim 2, the movable staircase can be easily removed by loosening the bolt and removing it from the nut, and the movable staircase can be easily attached to another location by screwing into the nut at another location. be able to.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows a state in which the movable staircase 1 is used, and FIG. 2 shows a state in which the movable floor 2 is lifted to make the movable staircase 1 unusable. (FIGS. 1 and 2 show only one side), consisting of a square pipe or a round pipe having a large torsional rigidity, and having a relatively large size in which each end is attached to the horizontal shafts 4 and 5 It has a long rod 3a and a relatively small long rod 3b, and the tread plate 6 is pivotally attached to both long rods 3a and 3b at regular intervals so that the long rod 3a and 3b and the tread plate 6 It forms a parallelogram link mechanism. At the other end (lower end) of the long eave 3a, there is a roller 7 for landing on the movable floor 2, and a handrail 8 is fixed to the eaves 3a by two struts 9.

  As shown in FIG. 3, the bearing 11 that supports the horizontal shafts 4 and 5 is fixed by screwing a bolt 13 through a bearing 11 into a bag-like nut 12 embedded in the pool side, and loosens the bolt 13. Although the nut 12 is not shown, several nuts 12 are provided at appropriate positions on the pool side.

  The movable staircase 1 of the present embodiment is configured as described above, and when the movable floor 2 moves up and down, the movable staircase 1 follows the parallelogram of the link mechanism, and keeps the tread plate 6 horizontal while being crushed or expanded. Then lifted or lowered.

FIG. 2 shows a state where the movable floor 2 is lifted to the uppermost position and the movable staircase 1 is lifted horizontally.
The movable staircase 1 is fixed in place at the pool side by screwing the bolt 13 of the bearing 11 into the nut 12 in place.

  The movable staircase of the present invention is installed in a pool having a movable floor that can be moved up and down.

The side view which shows the use condition of a movable staircase. The side view which shows the non-use state of a movable staircase. Sectional drawing which shows the bearing part of a movable staircase.

Explanation of symbols

1. ・ Moving staircase 2 ・ ・ Moving floors 3a, 3b ・ ・ Longs 4, 5 ・ ・ Horizontal axis 6 ・ ・ Treading board 7 ・ Roller 8 ・ ・ Handrail 9 ・ ・ Post 11 ・ ・ Bearing 12 ・ ・ Bag-shaped Nut 13 ・ ・ Bolt

Claims (2)

  A movable staircase that is installed on the poolside to move up and down on the movable floor that can be moved up and down in the pool, and that moves up and down following the movement of the movable floor. A movable staircase characterized by comprising two long rods that are pivotally attached to each other, and treads that are connected to the two long rods at regular intervals and that together with the long rods constitute a parallelogram link mechanism.   2. The movable staircase according to claim 1, wherein a horizontal shaft bearing for pivotally mounting each elongate rod is attached by a bolt screwed into a bag-like or sleeve-like nut embedded in the pool side. .

Images