JP2003147926A - Staircase - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a staircase having a structure capable of reducing the bending amount of each tread and vibration in walking even if the width of the staircase is increased. SOLUTION: This staircase 1 includes a pair of right and left strings 2, 2, a plurality of riser members 3, 3 erected and fixed between the strings 2, 2, and a plurality of tread members 4, 4 erected between the riser members 3, 3 vertically adjacent to each other. The riser members 3 and the tread members 4 are formed of aluminum hollow-section extrusion shape. The front engagement part 4d and rear engagement part 4e of the tread member 4 and respectively engaged with an engagement part 3f formed on the upper part of the riser member 3 and an engagement part 3h formed on the lower part of the riser member 3 on the upper side. The fixing parts 4f, 4g of the tread member 4 are fixed to the fixing parts 3g, 3i of the riser member 3. Further, the right and left ends of the riser member 3 are respectively supported by a support projection (a lower flange 2c) formed along the inside of the string 2.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to stairs installed inside or outside a building.

[0002]

2. Description of the Related Art Hitherto, various types of stairs have been proposed to be installed inside or outside a building. One of them is a pair of left and right side girders or sasara plates laid over the upper and lower floors. There is a structure with many treads installed between them.

[0003]

However, in a stairway having a structure in which the left and right ends of each tread plate are supported by side girders or sara plates as described above, when the width of the staircase increases, a vertical load downward on each tread plate is increased. Since the amount of bending of each tread when acted on increases dramatically, there is a problem that the walking feeling is poor and the structure is unstable. Further, in the above-mentioned conventional stairs, it is necessary to use side girders or sasara plates having great rigidity in order to prevent the stairs from swaying to the left or right when a person walks.

In view of the above circumstances, the present invention has a small amount of bending of each tread when walking even if the width of the stairs becomes large,
We propose a staircase that does not require the use of large side girders or slabs to prevent the staircase from swaying to the left or right when walking.

[0005]

A stairway according to claim 1 of the present invention comprises a pair of left and right side girders, a plurality of riser members fixedly installed between the side girders, and vertically adjacent to each other. And a plurality of tread plate members that are respectively installed between the riser plate members.

[0006] In such a staircase, each tread member is not supported only between the left and right side girders as in the conventional case, but each tread member is supported between the upper and lower riser plate members. Unlike the above, even if the width of the stairs increases, the amount of bending of the tread member does not change unless the front-to-back spacing of the riser member changes. Therefore, even in the case of stairs having a particularly large width, the walking feeling is not deteriorated and the structure is stable, so that it can be applied to stairs of various sizes. Further, since the riser plate member that is erected and fixed between the side girders is arranged in the vertical direction, the strength of the entire stairs in the vertical direction is increased, and the vertical bending is reduced.

The stairs according to claim 2 of the present invention are the steps of claim 1.
In the stairs described in (1), the riser plate member is made of an extruded profile having a hollow cross section.

Since the riser member of the staircase is made of the extruded member having the hollow cross section, it is possible to realize a high-performance staircase by using the riser member which is lightweight and has a high sectional performance and high dimensional accuracy.

The stairs according to claim 3 of the present invention are the steps of claim 1
Alternatively, in the stairs described in claim 2, one or all of the side girders, riser plate members, and tread plate members are extruded profiles made of aluminum alloy.

Since a part or all of the constituent members of such a staircase are made of an extruded profile made of aluminum alloy (hereinafter referred to as "aluminum extruded profile"), a lightweight and durable staircase can be realized. it can. Further, even if each constituent member has a complicated cross-sectional shape, it can be accurately processed.

The stairs according to claim 4 of the present invention are claimed in claim 1.
The stairs according to any one of claims 1 to 3, wherein a front portion and a rear portion of the tread plate member respectively include an engaging portion formed on an upper portion of the riser plate member and an upper riser side riser plate member of the riser plate member. It is characterized in that it is engaged with an engaging portion formed in a lower portion.

In this staircase, since each tread member is engaged with the upper and lower riser members, the work of mounting the tread member is simple,
It can be a high-strength staircase.

The stairs according to claim 5 of the present invention are the steps of claim 1.
The stairs according to any one of claims 4 to 4, wherein a fixed portion is formed on each of a front portion and a rear portion of the tread plate member, and these fixed portions are formed on an upper portion of the riser plate member and the riser plate. It is fixed to a fixing portion formed on the lower portion of the riser member on the upper side of the member.

In such stairs, since the respective tread members are fixed to the riser members arranged above and below the stairs, the stairs become plate-like reinforcing members in the horizontal direction of the entire stairs, and even if the side girder does not have great rigidity, The horizontal shaking of the stairs that occurs when a person walks is reduced.

The stairs according to claim 6 of the present invention are the steps of claim 1.
The stairway according to any one of claims 5 to 5, wherein the left and right ends of the riser plate member are respectively supported by supporting ridges formed along the inside of each side girder.

In such a staircase, since the right and left ends of the riser plate member are supported by the supporting ridges inside the side girders, the riser plate member can be easily positioned when mounted, and the riser plate member is fixed to the side girders. It also reinforces the strength and can realize high-strength stairs.

The stairs according to claim 7 of the present invention are claimed in claim 1.
The stairs according to any one of claims 6 to 6 are characterized in that an anti-slip material is provided on an upper end of the riser plate member.

Since such a stairway is provided with a non-slip material at the upper end of the riser plate member, it can be a safe staircase with less risk of a pedestrian slipping his / her foot.

The stairs according to claim 8 of the present invention are claimed in claim 1.
The stairway according to any one of claims 7 to 7, characterized in that an anti-slip material or a finishing material is provided on the upper surface of the step board member.

Since the stairs are provided with the anti-slip material or the finishing material on the upper surface of the tread member, it is possible to reduce the risk of a pedestrian slipping his foot and to make the stairs excellent in appearance.

The stairs according to claim 9 of the present invention are the steps of claim 1
The stairs according to any one of claims 8 to 9, wherein recesses are formed on the left and right end surfaces of the riser plate member, the brackets are fixed inside the side girders, and the brackets are inserted into the recesses. And

In this staircase, the brackets fixed to the side girders are inserted into the left and right recesses of the riser plate member,
The riser plate member is firmly fixed to the side girder, and the work for attaching the riser plate member is easy.

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the description, the same elements will be denoted by the same reference symbols, without redundant description.

FIG. 1 is a perspective view showing an embodiment of stairs according to the present invention. A staircase 1 shown in the same figure has a pair of left and right side girders 2, 2, a plurality of riser plate members 3, 3, ... Installed between the side girders 2, 2, and vertically adjacent riser plate members 3, 3. A main part is constituted by tread members 4, 4, ... The configuration of each component will be described below.

The side girder 2 is, as shown in FIG. 4, a web 2a.
And an upper and lower flanges 2b and 2c, which are made of an extruded aluminum material having an I-shaped cross section, and are bridged between the upper floor beam or floor and the lower floor beam or floor. Further, the web 2a of the side girder 2 is provided with three bolt holes 2d at positions where the riser plate member 3 is fixed. Further, in the vicinity of the outer side of the upper flange 2b of the side girder 2, the receiving ridge 2 projecting downward.
e is formed, and a receiving projection 2f projecting upward is formed near the outer side of the lower flange 2c. And
A decorative cover 5 is fitted on the outside of the side girder 2 so as to engage with the receiving ridges 2e and 2f.

As shown in FIGS. 2 and 3, the riser plate member 3 has hollow portions 3a, 3b, 3c, 3 partitioned by horizontal ribs.
It is made of an aluminum hollow extruded profile having a vertically long cross section having d. A ridge 3e having a T-shaped cross section is formed upright on the upper surface of the riser plate member 3, and a non-slip (anti-slip material) 6 is fitted around the ridge 3e. At the rear of the hollow portion 3a (to the right in FIG. 3), the hook-shaped engaging portion 3f having an upward cross section is provided.
The fixing portion 3g is formed below the engaging portion 3f so as to project rearward from the rear surface of the hollow portion 3a. Further, the lower surface of the riser plate member 3 is a bottom portion 3t that is formed obliquely at an angle corresponding to the slope of the stairs. An engaging portion 3h having a hook-shaped upward cross section is formed in front of the hollow portion 3d (on the left side in FIG. 3).
A fixing portion 3i is formed below the bottom of the hollow portion 3d so as to project forward from the front surface of the hollow portion 3d.

As shown in FIG. 2, both ends of the horizontal rib 3j between the hollow portions 3b and 3c of the riser plate member 3 in the left-right direction (the direction perpendicular to the paper surface in FIG. 3) of the bracket 7 to be described later, respectively. It is cut so as not to interfere with the insertion portion 7b. Also, the left and right ends of the rear plate portion 3k of the riser plate member 3 are fixed by the fixing portion 7a of the bracket 7 when the insertion portion 7b of the bracket 7 is inserted into the hollow portions 3b and 3c of the riser plate member 3. It is cut so that it does not protrude from the left and right end surfaces of 3.

As shown in FIGS. 2 and 3, the step plate member 4 is made of an aluminum hollow extruded shape member having a hollow portion formed by partitioning the upper and lower horizontal plane plates 4a and 4b by vertical ribs 4c. The cross-sectional shape of the tread member 4 is symmetrical in the longitudinal direction (symmetrical in FIG. 3). Engagement portions 4d and 4e each having a downward cross section are formed on the front and rear edges of the horizontal plate 4a. Further, fixing portions 4f and 4g that project in the front-rear direction are formed below the engaging portions 4d and 4e, respectively. A finishing material such as a cushion floor 8 is laid on the upper surface of the horizontal plate 4a at the same height as the upper surfaces of the engaging portions 4d and 4e.

As shown in FIGS. 4 and 5, the riser plate member 3 is fixedly installed between the side girders 2 and 2 via a bracket 7. The bracket 7 is a fixed portion 7a having a substantially U-shaped cross section.
And an insert portion 7b having a substantially L-shaped cross section formed to project from the fixing portion 7a toward the riser plate member 3, and is made of an aluminum extruded shape member. The fixing portion 7a is provided with three bolt holes 7c in the vertical direction.

Next, a procedure for assembling the stairs 1 will be described. First, as shown in FIGS. 4 and 5, the insertion portion 7b of the bracket 7 is inserted into the hollow portions 3b, 3c of the riser plate member 3 from both left and right sides. At this time, the left and right end portions of the horizontal rib 3j of the riser plate member 3 and the left and right end portions of the rear surface plate portion 3k are cut off by a predetermined length so as not to interfere with the bracket 7, so that the insertion portion 7b of the bracket 7 is inserted. Can be completely inserted into the hollow portions 3b and 3c of the riser plate member 3,
Moreover, the fixed portion 7a of the bracket 7 does not protrude from the left and right end surfaces of the riser plate member 3 when inserted. After that, the bracket 7 is completely fixed to the riser plate member 3 by screwing a screw screw S from behind the riser plate member 3 so as to penetrate the rear plate portion 3k of the riser plate member 3 and the insertion portion 7b of the bracket 7. To do. In addition, it is desirable that the non-slip 6 is previously fitted into the ridge 3 e of the riser plate member 3.

Next, the riser plate member 3 is positioned between the side girders 2 and 2 so that the position of the bolt hole 7c of the bracket 7 and the position of the bolt hole 2d of the side girder 2 coincide with each other. At this time,
Since the bottom portion 3t of the riser plate member 3 is formed obliquely at an angle corresponding to the slope of the stairs 1, the left and right end portions of the lower surface of the riser plate member 3 are placed on the lower flange 2c of the side girder 2 and along the same. By sliding the riser plate 3 in place, the riser plate member 3 can be positioned easily and accurately. When the riser plate member 3 is aligned, the bolts B are inserted into the bolt holes 7c of the bracket 7 and the bolt holes 2d of the side girders 2 from the inside, and the nuts N are tightened from the outside of the side girders 2. The plate member 3 is completely fixed to the side girders 2, 2. Further, after that, the projecting strips 5a and 5b of the decorative cover 5 are pushed into the receiving projecting strips 2e and 2f of the side girder 2 from the outside, respectively, so that the decorative cover 5 is fitted to the outside of the side spar 2. Since the riser plate member 3 is made of an aluminum hollow extruded shape member, is lightweight, has excellent durability, and has good workability, the functional staircase 1 with good dimensional accuracy can be realized. Further, since the riser plate member 3 has a vertically long cross section, it has a structure that does not easily bend under a downward vertical load. Further, since the lower portions on both the left and right sides of the riser plate member 3 are supported by the lower flanges 2c of the side girders 2, it is a reinforcement against the fixing strength.

Next, as shown in FIG. 3, the engaging portion 3h at the lower front surface of the riser plate member 3 at the upper stage is engaged with the engaging portion 4e at the rear portion of the step plate member 4, and the riser plate member 3 at the lower stage is engaged. The tread plate member 4 is installed between the vertically adjacent riser plate members 3 so that the front engaging portion 4d of the tread member 4 is engaged with the upper engaging portion 3f. At this time, the fixed portions 4f and 4g on the front and rear surfaces of the step board member 4 are respectively attached to the lower riser board member 3
It is supported while being mounted on the fixed portion 3g on the upper rear surface and the fixed portion 3i on the lower front surface of the riser plate member 3 on the upper stage. Tread member 4
Is supported by the riser plate members 3 and 3, the tread plate member 4
Is sandwiched between the left and right side girders 2 and 2 and does not wobble in the left-right direction,
Further, the engagement between the engaging portions 3f and 3h and the engaging portions 4d and 4e prevents them from wobbling in the front-rear direction. Since the tread plate member 4 is thus erected and supported by the upper and lower riser plate members 3 and 3, even if the width of the stairs 1 is increased, the tread plate member 4 is formed.
The distance between the support points does not change. Therefore, even if the width of the stairs 1 is large, the amount of bending of the tread member 4 does not change,
The staircase 1 having a stable structure can be realized. Also,
Since the riser plate member 3 is made of an aluminum hollow extruded shape member, is lightweight, has excellent durability, and has good workability, the functional staircase 1 with good dimensional accuracy can be realized. Further, the tread member 4
Is attached to the riser plate members 3 by the engagement of the engaging portions 3f and 3h with the engaging portions 4d and 4e, so that the stepping member 4 can be easily attached and the stairs 1 having high strength can be realized. You can The cushion floor 8 is preferably attached to the upper surface of the tread plate member 4 in advance, but may be attached after the tread plate member 4 is installed on the riser plate members 3 and 3.

Further, as shown in FIG. 3, the screw screw S is screwed upward from below the tread plate member 4 so as to pass through the fixing portion 3g of the riser plate member 3 and the fixing portion 4f of the tread plate member 4, and The tread plate member 4 is fixed to the riser plate members 3 and 3 by screwing the screw screw S upward so as to penetrate the fixing portion 3i of the plate member 3 and the fixing portion 4g of the tread plate member 4. As a result, the tread member 4 serves as a horizontal plate-shaped reinforcing member for the stairs 1, and serves as a reinforcement against the horizontal shaking force generated when a person walks on the stairs.

Although the assembly of the staircase 1 is completed as described above, the staircase according to the present invention is not limited to the above embodiment. For example, in the present embodiment, when fixing the tread plate member 4 to the riser plate member 3, the fixing portion is formed separately from the engaging portion, but a structure having only the fixing portion may be used. Further, in the present embodiment, the supporting convex strip for mounting and supporting the lower surface of the riser plate member 3 is the lower flange 2c of the side spar 2, but it is a convex strip formed along the inner side surface of the side spar 2. The riser plate member 3
It is not limited to this as long as it can support the lower surface of the. Further, instead of the cushion floor 8 attached to the upper surface of the tread plate member 4, another anti-slip material may be provided together with the cushion floor 8. Further, in order to prevent the insertion portion 7b of the bracket 7 inserted into the hollow portions 3b and 3c of the riser plate member 3 from interfering with the horizontal rib 3j, the left and right ends of the horizontal rib 3j are not cut and processed, but the bracket is not cut. It is also possible to make a horizontal cut in the insertion portion 7b of the connector 7. Others, side girder 2, riser member 3,
Material and cross-sectional shape of the tread plate member 4, fixing method of the riser plate member 3 to the side girders 2, tread plate member 4 to the riser plate members 3, 3.
The engagement method, the fixing method, etc. should be implemented with various modifications according to the spirit of the invention.

[0035]

As described above, according to the invention of claim 1, since each tread member is supported between the upper and lower riser members, the width of the staircase is different from the conventional staircase. Even if the distance increases, the amount of bending of the tread member does not change unless the front-to-back spacing of the riser plate member changes, and the walking feeling is not deteriorated even in the case of stairs having a large width, and the structure is stable. Further, since the riser plate member which is erected and fixed between the side girders is arranged in the vertical direction, the strength in the vertical direction is increased and the bending in the vertical direction is reduced.

According to the second aspect of the present invention, it is possible to realize a high-performance staircase by using a riser member that is lightweight, has high cross-sectional performance, and has high dimensional accuracy.

According to the third aspect of the present invention, it is possible to realize a lightweight and highly durable staircase, and it is possible to accurately process each constituent member even if it has a complicated sectional shape.

According to the invention of claim 4, the work of attaching the step plate member to the riser plate member is simple, and the stairs having high strength can be obtained.

According to the fifth aspect of the invention, since the respective tread plate members are fixed to the riser plate members arranged above and below the tread plate members, the step members become plate-like reinforcing members for the horizontal direction of the entire stairs, and the side girders are provided. Even if it does not have a large rigidity, the horizontal shaking of the stairs that occurs when a person walks is reduced.

According to the invention of claim 6, positioning at the time of attaching the riser plate member is easy, and a staircase having high strength can be obtained.

According to the invention of claim 7, it is possible to provide a safe stairway with less risk of a pedestrian slipping a foot.

According to the invention of claim 8, it is possible to reduce the risk of a pedestrian slipping his / her foot and to make the staircase excellent in aesthetics.

According to the invention of claim 9, the riser plate member is firmly fixed to the side girder, and the work of attaching the riser plate member to the side girder is simple.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of stairs according to the present invention.

FIG. 2 is a partial perspective view for explaining the shapes of a riser member and a tread member of the staircase shown in FIG.

FIG. 3 is a longitudinal sectional view of a main part of the staircase shown in FIG.

FIG. 4 is an exploded perspective view for explaining a method of constructing a riser member.

FIG. 5 is a transverse sectional view of the same.

[Explanation of symbols]

1 ... stairs 2 ... Side girder 2a ... Web 2b ... Upper flange 2c… Lower flange 2d ... Bolt hole 2e, 2f ... Receiving ridge 3 ... Raising board member 3a, 3b, 3c, 3d ... Hollow part 3e ... ridge 3f, 3h ... Engaging portion 3g, 3i ... Fixed part 3j ... Horizontal ribs 3k ... Rear plate 4 ... Tread member 4a, 4b ... Horizontal plate 4c ... Vertical rib 4d, 4e ... Engaging portion 4f, 4g ... Fixed part 5 ... Makeup cover 6 ... Non-slip 7… Bracket 7a ... Fixed part 7b ... Insertion part 7c ... Bolt hole 8… Cushion floor B ... bolt N ... Nut S ... Screw screw

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Norihiro Abe             1-11-1 Osaki, Shinagawa-ku, Tokyo Shin Nikkei Stock Inc.             In the company (72) Inventor Nishimoto             1-11-1 Osaki, Shinagawa-ku, Tokyo Shin Nikkei Stock Inc.             In the company F-term (reference) 2E101 DD16 DD24

Claims (9)

[Claims] 1. A pair of left and right side girders, a plurality of riser plate members installed and fixed between the side girders, and a plurality of tread plate members provided between the upside down adjacent riser plate members, respectively. Stairs characterized by including. 2. The stairs according to claim 1, wherein the riser plate member is made of a hollow cross-section extruded shape member. 3. The stairs according to claim 1 or 2, wherein one or all of the side girders, riser plate members, and tread plate members are extruded profiles made of aluminum alloy. 4. An engaging portion formed at an upper portion of the riser plate member and an engaging portion formed at a lower portion of the riser plate member on an upper side of the riser plate member, respectively. Stair according to any one of claims 1 to 3, characterized in that it is engaged with a part. 5. A fixing portion is formed on each of a front portion and a rear portion of the tread plate member, and these fixing portions are formed on an upper portion of the riser plate member and a riser plate member on an upper side of the riser plate member. The stairs according to any one of claims 1 to 4, wherein the stairs are fixed to a fixing portion formed at a lower portion of the stairs. 6. The left and right ends of the riser plate member are respectively supported by support ridges formed along the inside of the side girders. The stairs described in paragraph 1. 7. The stairs according to claim 1, wherein an anti-slip material is provided on an upper end of the riser plate member. 8. The stairs according to claim 1, wherein an anti-slip material or a finishing material is provided on an upper surface of the step board member. 9. The method according to claim 1, wherein recesses are formed on left and right end surfaces of the riser plate member, a bracket is fixed inside the side girder, and the bracket is inserted into the recess. The stairs according to any one of 8.