JP3287823B2 - Mounting structure of stair riser to footboard - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for attaching a step plate and a riser of a stair.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 5, a staircase is constituted by a plurality of tread plates 2 ', a riser plate 1' and a pair of girder plates 7 'provided on both sides thereof. The girder plate 7 'is provided with a mounting groove (not shown) in a horizontal direction to the ground and a support groove (not shown) in a vertical direction to the ground on its inner surface. The step board 2 ′ is provided with a fitting groove 4 ′ opened downward on the lower surface of the front end 2 a ′ in the longitudinal direction of the step board 2 ′,
Both ends in the longitudinal direction of the tread plate 2 'are fitted into the mounting grooves of the spar plate 7', fixed with nails or the like, and mounted at equal intervals in the vertical direction. The riser 1 'is mounted between the treads 2', the upper end of the riser 1 'is fitted into the fitting groove 4' of the upper tread 2 ', and the rear end of the lower tread 2'. The vertical end surface of the portion 2b 'is brought into contact with the end surface on the surface 1a' side of the kick plate 1 'and joined with a nail or the like, and both ends in the longitudinal direction of the kick plate 1' are fitted into the support grooves and fixed with the nail or the like. It is attached by doing. As shown in FIG. 6, the mounting portion of the riser 1 'to the tread 2' is a fitting groove 4 'provided at the upper part of the riser 1' on the lower surface of the tread 2 '.
And the adhesive 6 'on the inner wall surface of all the fitting grooves 4'.
Was joined.

[0003]

However, in the above-mentioned prior art, in order to obtain a strong joining force, all the inner wall surfaces of the downwardly opened fitting groove 4 'provided on the lower surface of the tread plate 2' are adhered. Although the upper part of the riser 1 'has been fitted by applying the agent 6', it is necessary to manufacture the fitting groove 4 'and the dimensional tolerance of the upper part of the riser 1' strictly in order to perform appropriate bonding. Yes,
In addition, the amount of the adhesive 6 ′ applied to the inner wall surface of the fitting groove 4 ′ is required to be equal to the volume of the fitting gap. The force cannot be obtained, and if the adhesive 6 'is larger than an appropriate amount, the adhesive 6' overflows outside the fitting groove 4 '.
When the underside of the tread plate 2 'on the side of the surface 1a' is overflowed, the overflowing adhesive 6 'can be seen from the front of the stairs, which impairs the appearance.

The present invention has been made in view of the above points, and provides a structure for attaching a riser to a tread while maintaining a strong joining force and without impairing the appearance.

[0005]

In order to solve the above-mentioned problems, according to the first aspect of the present invention, there is provided a mounting structure of the kick plate 1 to the tread plate 2, the front surface 1a side or the rear surface 1b of the upper end of the kick plate 1 being provided.
One of the sides is formed as an inclined surface 3 so that the thickness of the upper end portion of the riser plate 1 becomes tapered toward the front end side of the upper end portion, and the front surface in the fitting groove 4 of the lower opening provided in the front end portion 2a of the tread plate 2 is formed. Either the inner wall surface 4a or the rear inner wall surface 4b is formed as the inclined surface portion 5 so that the groove width becomes narrower as the groove width goes upward, the inclination angles of the inclined surface 3 and the inclined surface portion 5 are made the same, and the tread plate 2 is fitted. The upper end of the riser plate 1 is fitted into the groove 4, and the inclined surface 3 and the inclined surface 5 are pressed against each other, and the back surface 1 b of the upper end of the riser plate 1 and the fitting groove 4 are fitted.
The rear inner wall surface 4b is adhered with an adhesive 6. By fitting the inclined surface 3 of the riser plate 1 into the inclined surface portion 5 of the fitting groove 4, a stronger fit can be expected while biting, and the adhesive surface is in contact with the back surface 1 b of the upper end of the riser plate 1 and the fitting groove. 4 can obtain a sufficient adhesive force even with only one surface with the rear inner wall surface 4b. Also, since the adhesive 6 is applied only to one surface on the back surface 1b side of the kick plate 1, even if a large amount of the adhesive 6 is applied and comes out to the surface without staying in the fitting groove 4, the back surface 1b of the kick plate 1
Since it comes out only on the side, when viewed from the front of the stairs, the adhesive 6 that has come out on the surface is invisible behind the riser 1 and does not impair the appearance from the front of the stairs.

The footboard 2 of the riser 1 according to claim 2 of the present application.
In addition to the structure described in claim 1, the inclined surface 3 and the inclined surface portion 5 are attached to the rear surface 1b of the riser plate 1 and the rear inner wall surface 4 of the fitting groove.
b, so that the surface 1a of the riser 1 can be seen from the front of the stairs, but the surface 1a of the riser 1 is a vertical surface on which the inclined portion 3 is not provided. Since they are fitted without any step, they can be finished with good appearance.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on embodiments shown in the accompanying drawings.

FIGS. 1 and 2 show an embodiment of the present invention. As shown in FIG. 2, a staircase is composed of a plurality of tread plates 2, a riser plate 1, and a pair of girder plates 7 provided on both sides thereof. Is what is done. The girder plate 7 has a mounting groove (not shown) extending in a horizontal direction with respect to the ground and a supporting groove (not shown) extending in a direction perpendicular to the ground with an inner surface thereof. Stepping plate 2 is front end 2
A fitting groove 4 opened downward on the lower surface of a is provided in the longitudinal direction of the tread plate 2, and both ends of the tread plate 2 in the longitudinal direction are fitted into the mounting grooves of the spar plate 7 and fixed with nails or the like. They are mounted at equal intervals in the vertical direction. Here, it is assumed that the step plate 2 has a certain thickness in order to suppress the amount of deflection. For example, in the case of the step plate 2 having a length of 850 mm in the longitudinal direction, 3 mm is required.
The thickness is 6 mm. The riser 1 is mounted between the treads 2, and the upper end of the riser 1 is fitted into the fitting groove 4 of the upper tread 2, and is fitted to the rear end 2 b of the lower end of the tread 2. It is attached by bringing the lower end of the riser 1 into contact with the surface 1a side end surface and joining them with nails or the like, and fitting both ends in the longitudinal direction of the riser 1 into the support grooves and fixing them with nails or the like. It is.

FIG. 1 shows a portion where the riser 1 is attached to the tread 2.
It is configured as shown in FIG. An inclined surface 3 is provided on the rear surface 1b side of the upper end of the riser 1 so that the thickness of the upper end of the riser 1 is tapered toward the distal end. Is provided with an inclined surface portion 5 so that the groove width becomes narrower as the groove width increases. Here, the inclined surface portion 5 has the same angle as the above-described inclined surface 3. After the adhesive 6 is applied to the inclined surface 5, the riser 1 is fitted and fitted in the fitting groove 4 of the tread 2.
Here, the adhesive 6 uses, for example, a urethane-based adhesive.

By providing the inclined surface 3 and the inclined surface portion 5 in the fitting portion in this manner, it is possible to expect a strong fitting such that the riser plate 1 bites into the fitting groove 4 and a nail. Since no fixture is used, generation of squeaking noise or the like can be suppressed. In addition, since strong fitting can be expected as described above, a sufficient adhesive force can be obtained only by bonding the back surface 1b of the riser plate 1 and one surface of the rear inner wall portion 4b of the fitting groove 4 of the tread plate 2 with each other. Is what you can do.
In this manner, by applying the adhesive 6 only to the rear inner wall portion 4b of the fitting groove 4 of the tread plate 2, the adhesive 6 is applied when the volume of the applied amount of the adhesive 6 is larger than the volume of the fitting gap. Even if it does not stay in the fitting groove 4 and comes out on the front surface, it comes out only on the back surface 1b side of the riser plate 1 so that it cannot be seen from the front of the stairs and a good appearance can be secured. Things.

FIG. 3 shows another example of the embodiment. This staircase has substantially the same structure as that of the above-described embodiment, and the mounting portions of the riser plate 1 and the tread plate 2 are different. Therefore, the different portions will be mainly described.

In another example of the embodiment, as shown in FIG. 3, an inclined surface 3 is provided on the surface 1a of the upper end of the riser 1 so that the thickness of the upper end is tapered toward the distal end. An inclined surface portion 5 is provided on the front inner wall surface 4a of the second fitting groove 4 such that the width becomes narrower as the groove width goes upward. The inclined surface 5 has the same angle as the inclined angle of the inclined surface 3. After the adhesive 6 is applied to the rear inner wall surface 4b of the fitting groove 4, the riser plate 1 is fitted into the fitting groove 4 and mounted.

In the case where the inclined surface 3 is provided on the surface 1a side of the riser plate 1 and the inclined surface portion 5 is provided on the front inner wall surface 4a of the fitting groove 4 as shown in FIG. 5 is the riser 1
4A is formed when the inclined surface 3 is higher than the inclined surface 3, or when the inclined surface 3 of the riser 1 is higher than the inclined surface 5 as shown in FIG. Is formed. However, in the example of the embodiment shown in FIG. 1, since the inclined surface 3 is provided on the back surface 1 b side of the riser 1, there is a vertical surface on the surface 1 a side of the riser 1. Since the fitting is performed without a step on the side 1a, the fitting portion can have a good appearance without any step when viewed from the front of the stairs.

[0014]

As described above, in the mounting structure of the riser to the footboard according to the first aspect of the present invention, either the front side or the rear side of the upper end of the riser of the stairs is lifted. The upper end has a sloped surface such that the thickness of the upper end is tapered toward the top end, and the groove width is increased on either the front inner wall or the rear inner wall in the fitting groove of the lower opening provided at the front end of the tread plate. The inclined surface is made to be narrower as it goes to, and the inclination angle of the inclined surface and the inclined surface is made the same, the upper end of the riser is fitted into the fitting groove of the step plate, and the inclined surface and the inclined surface are pressed against each other. At the same time, the back surface of the upper end of the riser plate and the inner wall surface of the fitting groove are adhered to each other with an adhesive, so that a strong fitting such that the riser plate cuts into the fitting groove via the inclined surface and the inclined surface is expected. Therefore, even if the adhesive surface is one surface on the back surface of the upper end of the riser, The adhesive is applied only to one side of the back side of the riser, so if a large amount of adhesive is applied and it does not stay in the fitting groove and comes out on the surface, the riser When viewed from the front of the stairs, the adhesive that has come out of the front surface is hidden behind the riser plate and cannot be seen when viewed from the front of the stairs, and does not impair the appearance of the stairs from the front.

According to a second aspect of the present invention, in addition to the first aspect, in addition to the first aspect, the inclined surface is provided on the back side of the kick plate, and the inclined surface portion is provided with a fitting groove. Since it is provided on the rear inner wall surface, there is a vertical surface on the front side of the riser, so that there is no step when viewed from the front of the stairs, and a good appearance can be secured.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a state in which a riser plate is attached to a tread plate according to an embodiment of the present invention. FIG. FIG.

FIG. 2 shows the entire staircase of the above, wherein (a) is a side view and (b) is a front view.

3A and 3B show a fitting portion between a tread plate and a riser plate according to another embodiment of the present invention, wherein FIG. 3A is a cross-sectional view of a mounted state, and FIG. It is sectional drawing.

FIGS. 4A and 4B are explanatory diagrams for explaining advantages of the structure of FIG. 1;

FIG. 5 illustrates the entire prior art staircase;
(A) is a side view, (b) is a front view.

FIG. 6 is a cross-sectional view showing a mounting portion of a conventional riser to a tread plate according to the related art.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Kick-in board 1a Front surface 1b Back surface 2 Tread plate 3 Inclined surface 4 Fitting groove 4b Rear inner wall surface 5 Inclined surface 6 Adhesive

Claims (2)

(57) [Claims] 1. A step surface of one of a top surface and a rear surface of an upper end portion of a riser of a stair is formed as an inclined surface so that a thickness of an upper end of the riser is tapered toward a front end of the upper end. Either the front inner wall surface or the rear inner wall surface in the fitting groove of the lower opening provided in the lower surface is formed as an inclined surface portion so that the groove width becomes narrower as the groove width goes upward, and the inclination angle of the inclined surface and the inclined surface portion is the same. And fit the upper end of the riser plate into the fitting groove of the step plate,
A structure for mounting a stair riser to a tread plate, characterized in that the slope is pressed against the slope and the back surface of the upper end of the riser and the rear inner wall surface of the fitting groove are bonded with an adhesive. 2. A structure for mounting a stair riser to a tread as claimed in claim 1, wherein the slope and the slope are located on the back side of the riser and on the inner wall surface behind the fitting groove.