JP3412036B2 - Staircase structure - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stair structure which can be used for a long period of time by joining a floor sheet to a stair base in order to enhance the safety and design of the stairs, anti-slip property when moving up and down, and sound insulation. .

[0002]

2. Description of the Related Art Conventionally, a synthetic rubber floor sheet is attached in order to reduce noise during raising and lowering and to improve anti-slip property on a tread of a stair base or from the tread to kicking up. Has been.

However, the synthetic rubber floor sheet is
Since it is not possible to increase the joint strength to the tread surface of the stairs base and the corner portion, there is a risk of peeling or misalignment, or a floor sheet that has peeled or misaligned. There was a danger that the pedestrian would stumble.
Further, since the floor sheet made of synthetic rubber has poor weather resistance, it has a problem that it deteriorates in a relatively short period of time when used on stairs provided outdoors.

Therefore, the present applicant previously filed Japanese Patent Application No. 7-361.
Floor sheet No. 46 with a thinner back surface of the corner to improve weather resistance, anti-slip properties, sound insulation properties, joint strength with stairs base, workability and workability. Proposed.

However, as a result of subsequently applying the above-mentioned floor sheet and other floor sheets to the stairs base and repeating the up-and-down test continuously, the floor of the stairs with the floor sheet attached It has become clear that a gap is likely to be created between the corner of the seat and the corner of the stairs, and the corner of the floor sheet is as easy to reduce as the tread and is the most liable to tear. It was

This phenomenon is partly due to the previously proposed floor seal.
This is also due to the fact that the bottom of the corner part has a thin linear shape, but more than this, the stepping pressure that is repeated when moving up and down is transmitted to the floor sheet surface as a shearing force, and the stress is generated in the gap. It is thought that this is due to the concentration in the corner portion where

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is said that slip resistance, sound insulation and durability after joining a floor sheet to a stairs base are improved. It is an object of the present invention to provide a staircase structure that can be used safely for a long period of time by greatly improving the durability and durability of the corner portion.

[0008]

In order to achieve the above object, a staircase structure according to claim 1 of the present invention is a structure in which a floor sheet is joined to a staircase base material with a bonding agent. An L-shaped crosspiece having a substantially L-shaped cross section is interposed in the gap between the corner portion and the corner portion of the floor sheet, and fixed by an adhesive,
The radius of curvature of the curved front side corner surface of the L-shaped rail is made substantially the same as the radius of curvature of the curved back surface of the floor sheet corner portion, and the radius of curvature of the curved back side corner surface of the L-shaped rail is set to that of the projecting corner of the stair base. It is characterized in that the radius of curvature of the curved surface of the corner portion is substantially the same, and both ends or one end of the L-shaped crosspiece are thinned to have a thickness that is not so different from the layer of the bonding agent.

[0009]

The staircase structure according to claim 2 is characterized in that the radius of curvature of the curved front side corner surface and the radius of curvature of the back side corner surface of the L-shaped crosspiece are both 10 mm or less.

According to the staircase structure of claim 1, as long as the gap between the corner of the corner of the stairs base and the corner of the floor sheet is closed by the L-shaped crosspiece and the fixing force is maintained, the floor sheet corner is maintained. Since deformation, friction and the like due to stress concentration on the floor portion are prevented, it is possible to prevent breakage of the floor sheet corner portion for a long period of time. Further, the fixed L-shaped crosspiece has a strong resistance against the deviation of the tread surface of the floor sheet, which makes the staircase structure of the present invention highly durable and safe. And L
Adhesion between the shaped beam and the floor sheet or stairs base is further improved, and standard production of the L-shaped beam is possible, and the L-shaped beam is fixed to the back surface of the floor sheet corner in advance. It is possible to perform work such as fixing to the corners of stairs.

[0012]

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a stair structure according to the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a sectional view showing an embodiment of the staircase structure of the present invention, and FIG. 2 is a partially enlarged portion of FIG.

In the staircase structure illustrated in FIG. 1, the floor sheet 2 is bonded to the stairs base 1 with a bonding agent (adhesive 3), and a gap is formed between the corner of the projecting corner of the stairs and the corner 2b of the floor sheet 2. An L-shaped crosspiece 4 having a substantially L-shaped cross section is interposed and fixed by an adhesive.

The staircase base 1 has a smooth tread surface, a curved corner portion, and a substantially vertical riser, and is made of various materials such as concrete, steel, and wood. Is. And its installation location does not matter whether it is outdoors or indoors.

On the other hand, the floor sheet 2 has a single-layer structure or a multi-layer structure of two or more layers containing a vinyl-based resin such as polyvinyl chloride or an olefin-based resin such as polypropylene as a main component in advance so that the floor sheet 2 can be easily joined to the stairs. The synthetic resin sheet is softened by heating or the like, and its front edge portion is attached to the back surface side by a certain amount and is bent at about 90 ° to form a tread 2a.
The corner portion 2b and the riser 2c are formed.

As shown in FIG. 1, the surface 2a of the floor sheet 2 (hereinafter referred to as the sheet tread surface) has an anti-slip projection 2 of about 0.5 to 2 mm formed by embossing.
d is formed, and on the surface of the corner portion 2b of the floor sheet 2 (hereinafter referred to as a sheet corner portion), a strip-shaped raised portion 2e having a similar thickness is formed. The raised portion 2e has a groove 2 communicating with the seat tread surface 22 in order to prevent water and dust from accumulating on the seat tread surface 2a.
f is formed at regular intervals.

Further, vertical ribs 2g having a height of about 0.5 to 2 mm are formed at regular intervals on the surface of the riser 2c of the floor sheet 2 (hereinafter referred to as the sheet riser). The vertical ribs 2g are for preventing the sheet riser 2c from warping or peeling to the front surface side.

Such a floor sheet 2 has the above-mentioned vinyl system,
Plasticizers, fillers, colorants, synthetic resins such as olefins,
By adding function improvers such as weathering agents and strengthening agents,
It is possible to improve various physical properties such as abrasion resistance, durability, feeling of treading, soundproofing, and strength. Furthermore, the shape and arrangement of the non-slip protrusions can be changed, and the color scheme of the floor sheet surface can be considered. By doing so, it is possible to improve the design.

The L-shaped crosspiece 4 is made of a metal such as hard synthetic resin or aluminum, and the radius of curvature of the front side corner surface of the L-shaped crosspiece 4 is substantially the same as the radius of curvature of the curved back surface of the seat corner portion 2b. The radius of curvature of the curved back-side corner surface of the L-shaped crosspiece 4 is set to be the same, and is set to be large to be approximately the same as the radius of curvature of the curved surface of the base corner portion. Both ends of the L-shaped crosspiece 4 are thinned so that the thickness is almost the same as the layer of the bonding agent 3.

The L-shaped crosspiece 4 is fixed to the curved back surface of the seat corner portion 2b and the curved front surface of the base corner portion with no gap by an adhesive having a large bonding force, and the seat tread surface 2a and the seat riser 2c. Also, the adhesive 3 having a large bonding force is used as the bonding agent to bond the tread to the tread of the stair base 1. When the adhesive 3 is used as the joining agent in this way, since the adhesive layer is thin, if the both ends of the L-shaped crosspiece 1 are thick, the L-shaped crosspiece 2a and the seat riser 2c are joined together at a L The thickness of the crosspiece 1 is an obstacle, and it is not easy to join the crosspiece 1 in close contact with the stairs base 1. However, since both ends of this L-shaped crosspiece 1 are thinned as described above, the seat tread 2a and seat lift 2c
Can be firmly joined in a state where they are in close contact with each other. Note that the bonding agent is not limited to the adhesive 3 described above, and a pressure-sensitive adhesive 31 and a sealing agent 32, which will be described later, may also be used.

In the staircase structure having the above-described structure, the gap between the corner portion of the staircase base 1 and the seat corner portion 2b is L.
Since the L-shaped crosspiece 4 is closed without any gaps and the L-shaped crosspiece 4 is firmly adhered and integrated with the front surface of the base corner portion and the back surface of the seat corner portion 2b with an adhesive, the stepping pressure when climbing the stairs is reduced. Even if repeatedly acted, deformation and friction due to stress concentration on the sheet corner portion 2d are prevented, and the seat corner is prevented.
The destruction of the portion 2d is prevented for a long time. The L-shaped crosspiece 4 fixed as described above is provided on the tread 2a of the floor sheet 2.
It becomes a strong resistance to the deviation of the stairs and further enhances the durability and safety of the staircase structure.

FIG. 3 is a sectional view showing another embodiment of the staircase structure of the present invention, and FIG. 4 is a partially enlarged view of FIG.

In this staircase structure, the floor sheet 2 is adhered to the staircase base 1 made of striped steel plate having irregularities on the surface with a bonding agent (adhesive 31), and the sheet corner portion 2b and the corner portion of the staircase base material. The L-shaped crosspiece 4 having a substantially L-shaped cross section is interposed in the gap between and and is fixed with an adhesive.

The L-shaped crosspiece 4 used in this embodiment has a constant thickness, and the curved front side corner surface and the curved back side corner surface are formed into concentric arc surfaces, and the curvature radius R of the front side corner surface is the back side corner surface. It is larger than the radius of curvature r of the surface by the thickness of the L-shaped crosspiece. Then, the adhesive 31 is formed as a bonding agent in a layer having substantially the same thickness as the L-shaped crosspiece 4, and the seat tread 2a and the seat rise 2c are joined to the tread of the stairs base and the rise.

The pressure-sensitive adhesive 31 has weaker adhesion strength than the adhesive, but on the other hand, the pressure-sensitive adhesive 31 can be manufactured in a state of being laminated on the back surface of the floor sheet 2 in advance, and thus the pressure-sensitive adhesive is laminated on the back surface. The above-mentioned floor sheet 2 has an advantage that the workability of sticking is improved because the work of applying the adhesive can be omitted in the sticking work. A butyl rubber-based adhesive is often used as the pressure-sensitive adhesive, but a butyl rubber-based adhesive is apt to be softened outdoors in the summer, and if it is softened, the floor sheet 2 may be displaced. Therefore, in this embodiment, the floor sheet 2 is used. A sealing agent 32 having a triangular cross section is provided at the rear end of the floor sheet 2 to prevent the floor sheet 2 from being displaced, thereby ensuring safety for a longer period of time.

As described above, in the staircase structure of the present invention, various bonding agents can be selected when the floor sheet 2 is attached to the staircase base 1, but the work is easy, and the safety and durability after construction are high. It is important to flexibly select in consideration of the above.

5, 6, and 7 are partial sectional views showing a staircase structure according to still another embodiment of the present invention.

That is, the staircase structure shown in FIG.
Of the L-shaped crosspiece 4 when the corner portion of the sheet is formed substantially at a right angle without being substantially curved, the radius of curvature of the back side corner surface is substantially 0, and the radius of curvature of the front side corner surface is the seat corner. An L-shaped crosspiece having a radius of curvature of the back surface of the portion 2b is used, and the L-shaped crosspiece 4 is fixed to the gap between both corners with an adhesive, and the tread surface of the floor sheet 2 is fixed by the adhesive 31. 2a and a riser 2c are attached to the stairs base 1.

Contrary to the above, in the staircase structure shown in FIG. 6, the corner portion of the staircase base 1 is curved and the back surface of the seat corner portion 2b is formed substantially at a right angle without being substantially curved. As the L-shaped crosspiece 4, an L-shaped crosspiece whose front-side corner surface has a radius of curvature of substantially 0 and whose back-side corner surface has a radius of curvature substantially equal to that of the base corner portion is used. The L-shaped crosspiece 4 is fixed to the gap between both corners with an adhesive, and the floor sheet 2 is fixed with the adhesive 31.
The tread 2a and the riser 2c are attached to the stairs base 1.

Furthermore, the staircase structure shown in FIG.
When both the front surface of the corner portion and the back surface of the seat corner portion 2b are curved, both the back side corner surface and the front side corner surface are curved as the L-shaped crosspiece 4, and one end side is thin and the other end side is thick. Using the L-shaped crosspiece, the L-shaped crosspiece 4 is fixed to the gap between both corners with an adhesive, and the adhesive 3 is used as the seat tread 2a, and the adhesive 31 is used as the stair lift 2c as the stair base. It is pasted.

The radii of curvature of the front side corner surface and the back side corner surface of the L-shaped crosspiece 4 used in each of the above embodiments are practically the same as the radius of curvature of the corner portion of the staircase base 1 and the back surface of the seat corner portion. Most of the radius of curvature is within 10 mm.
The product lineup is reduced, which is advantageous. Also, L-shaped crosspiece 1
Is preferable to be fixed to the tread surface side at least as far as the riser side, because the resistance to the deviation becomes stronger.

[0034]

As is apparent from the above description, the staircase structure of the present invention prevents breakage and peeling of the corner portion of the floor sheet, enables long-term use, and is safe during lifting and noise insulation. And so on can be improved.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a staircase structure of the present invention.

FIG. 2 is a partially enlarged view of FIG.

FIG. 3 is a sectional view showing another embodiment of the staircase structure of the present invention.

FIG. 4 is a partially enlarged view of FIG.

FIG. 5 is a partial cross-sectional view showing still another embodiment of the staircase structure of the present invention.

FIG. 6 is a partial cross-sectional view showing still another embodiment of the staircase structure of the present invention.

FIG. 7 is a partial cross-sectional view showing still another embodiment of the staircase structure of the present invention.

[Explanation of symbols]

1 stairs base 2 floor sheet 2a Seat tread 2b Seat corner 2c seat kick up 3 Adhesive (bonding agent) 31 Adhesive (bonding agent) 32 Sealing agent (bonding agent) 4 L-shaped crosspiece

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) E04F 11/17

Claims (2)

(57) [Claims] 1. A structure in which a floor sheet is joined to a stair base with a bonding agent, and an L-shaped crosspiece having a substantially L-shaped cross section is interposed in a gap between a corner of a corner of the stair base and a corner of the floor sheet. Then, the L-shaped beam is fixed with an adhesive so that the radius of curvature of the curved front-side corner surface of the L-shaped beam is approximately the same as the radius of curvature of the curved back surface of the floor sheet corner, and the curved back-side corner surface of the L-shaped beam is also curved. The radius is set to be substantially the same as the radius of curvature of the curved surface of the corner of the projecting corner of the stairs, and both ends or one end of the L-shaped crosspiece are thinned to have a thickness that is not so different from that of the above-mentioned bonding agent layer. A staircase structure. 2. The staircase structure according to claim 1, wherein the curvature radius of the curved front side corner surface and the curvature radius of the back side corner surface of the L-shaped crosspiece are both 10 mm or less.