JPH0679942U - Staircase structure - Google Patents

Abstract

(57) [Summary] [Purpose] To provide stairs that can be lifted and lowered safely even on a steep slope. [Structure] In a staircase in which a large number of horizontally held treads are arranged along an inclined surface, a first tread 1 having one tread extending from a substantially central portion of the entire width of the stairs and the entire width of the stairs A large number of second treads 2 formed by extending the other tread surface with the substantially central portion as a boundary are alternately arranged.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a staircase structure, and more particularly to a staircase structure suitable for installation in a place having a large inclination angle.

[0002]

[Prior art]

 In general, stairs are constructed by arranging a large number of treads held horizontally in an oblique direction. The stairs are generally easier to ascend and descend when the slope is gentler, but it is linear when the starting point at the bottom and the reaching point at the top are distant and there is little space for installation. If the structure is continuous, the slope becomes steep. In such a case, as shown in FIG. 7, the divided stairs S are connected at the landing T to make the inclination as gentle as possible, or as shown in FIG. A device is made.

[0003]

[Problems to be solved by the device]

 However, in the case of temporary installation in a limited space such as temporary stairs for construction, due to restrictions such as ease of installation and removal and cost, it is unavoidable to sacrifice ease of use. However, there are various problems as described below.

That is, when the stairs are extremely steep, the step plate 10 is arranged almost vertically as shown in FIG. 9, so that the effective step allowance F whose upper surface is open is reduced. . As a result, when climbing the stairs, the toes may be caught on the tread plate 10 immediately above.

On the other hand, when getting off, the footboard 10 becomes almost invisible, and the user's feet become less obtrusive, which may cause a feeling of fear. Further, if the user tries to put his / her foot on the effective step allowance F without fail, the edge of the step board 10 will hit the calf and is uncomfortable. Moreover, it is very dangerous because only the heel portion can be placed on the footboard 10.

In the above-mentioned cases, a handrail is usually installed to ensure the safety of the elevating person, but even if it is installed, it is still dangerous and further improvement is desired. The present invention has been made in view of the above matters, and an technical object thereof is to provide a staircase structure that can safely ascend and descend even when installed on a steep slope.

[0007]

[Means for Solving the Problems]

 The present invention has the following configuration in order to solve the above technical problems. That is, in a staircase in which a large number of horizontally held treads are arranged along an inclined surface, the treads are divided into one side and the other side with a substantially central portion of the entire width in the direction orthogonal to the elevating direction as a boundary. The first tread plate 1 is formed by notching the side tread surface 3 and the second tread plate 2 is formed by cutting out the other side tread surface, and the first tread plate 1 and the second tread plate 2 are alternately moved in the vertical direction. Arranged in

[0008]

[Action]

 Since the notches on one side and the other side are arranged alternately in the arrangement direction of the treads, the overlapping area of the treads 3 is reduced. Therefore, the effective stepping margin F can be greatly expanded. The effective step margin F is about twice that of the conventional one, and the toe does not hit the end of the tread plate immediately above even when climbing. Moreover, the edge of the tread does not touch the calf even when descending, and the tread 3 is clearly visible, so there is no fear and it is safe in practice.

When moving up and down, the left and right feet that can be placed on the first and second treads 1 and 2 are determined according to the arrangement of the first and second treads 1, but it is clear from the results of experiments that there is no problem.

[0010]

Embodiment An embodiment of the present invention will be described with reference to FIGS. In this embodiment, a large number of first step plates 1 and second step plates 2 having different shapes are arranged alternately along the inclined surface. As shown in FIG. 1, the first tread plate 1 has a shape in which a tread surface 3 on the other side extends by notching one side of an iron plate having a length and width of about 1: 4. That is, a quarter of the width of the rectangular iron plate is left along the lengthwise direction, and 45% of the width of the iron plate is cut off in a rectangular shape so that the center of the entire width of the stairs becomes the boundary. The tread 3 on one side has an extended shape.

On the other hand, the second step plate 2 has a shape in which a step surface 4 on the other side opposite to the first step plate 1 extends, as shown in FIG. That is, the other tread surface 4 of the second tread plate 2 is formed at a position opposite to the one tread surface 3 of the first tread plate 1. The one tread surface 3 and the other tread surface 4 of the first and second treads 1 and 2 each have a width of 55% of the total width.

As shown in FIG. 4, a large number of the first treads 1 and the second treads 2 having the above-described configuration are arranged alternately with a predetermined inclination. At this time, as shown in FIG. 5, the upper surface of the tread surface is opened by the notch, so that a sufficient effective step margin F can be obtained. Further, one tread surface 3 and the other tread surface 4 have a slight overlap (10% of the entire width) to prevent missteps and the like.

As shown in FIG. 6, the left foot always rides on one tread 3, and the other foot 4 always rides on the right foot (not shown). In this way, since the treads are extended so that they are staggered in the arrangement direction of the treads, the effective step allowance can be greatly expanded. The effective step margin F is almost double that of the conventional one, and the toes do not hit the tread even when climbing. In addition, when you go down the stairs, you can see the treads well, there is no fear, and it is safe.

As described above, the stairs of the present invention can be safely elevated and lowered even when installed on a steep slope. Further, even when the construction is performed, it is sufficient to weld the entire width portions of the first tread 1 and the second tread 2, so there is no difference from a general staircase.

Although the above embodiment has described the linear staircase, the present invention is not limited to this example, and it goes without saying that the spiral staircase can be similarly carried out. Further, in the embodiment, the one tread surface 3 and the other tread surface 4 are provided with a slight overlapping portion, but they can be arbitrarily set according to the embodiment.

[0016]

[Effect of device]

 According to the present invention, a wide tread surface can be obtained alternately on the tread plate, and the effective step allowance can be greatly expanded. For this reason, it is possible to safely climb up and down even when installed on a steep slope.

[Brief description of drawings]

FIG. 1 is an overall perspective view showing an embodiment of the present invention.

FIG. 2 is a plan view of a first step plate showing an embodiment of the present invention.

FIG. 3 is a plan view of a second step plate showing an embodiment of the present invention.

FIG. 4 is an overall plan view showing an embodiment of the present invention.

FIG. 5 is a plan view showing a step allowance portion showing an embodiment of the present invention.

FIG. 6 is a side view of an embodiment of the present invention in an ascending state.

FIG. 7 is a perspective view showing a general staircase.

FIG. 8 is a perspective view showing a general spiral staircase.

FIG. 9 is a perspective view showing a general stair climbing state.

[Explanation of symbols]

 1 ... 1st tread, 2 ... 2nd tread, 3, 4 ... tread

Claims (1)

[Scope of utility model registration request] 1. In a staircase in which a large number of horizontally held treads are arranged along an inclined surface, the treads are divided into one side and the other side with a substantially central portion of the entire width in a direction orthogonal to the up-down direction as a boundary. , A first tread plate having a notch on one side and a second tread having a tread on the other side
A staircase structure characterized in that a footboard is provided, and the first footboard and the second footboard are alternately arranged in a vertical direction.