JP7397922B2 - Stair construction methods, stair side panels, stair treads and stairs - Google Patents

Description

TECHNICAL FIELD The present invention relates to a method of constructing a staircase, a side plate of a staircase, a tread of a staircase, and a staircase.

Conventionally, a staircase as shown in FIG. 16 has been installed as an indoor staircase in a wooden house or the like. A staircase 100 shown in FIG. 16 has a plurality of horizontal treads 1 and a plurality of vertical risers 2 arranged between a pair of side plates 3 and 4 extending diagonally upward and arranged in parallel. It is designed to consist of tiers.

The pair of side plates 3 and 4 are each formed with a tread mounting groove for fitting the tread 1 and a riser mount groove for fitting the riser 2, and the tread 1 and the riser 2 are fitted into the groove. It looks like this. To fit the riser board 2 after fixing the side boards 3 and 4 to an indoor wall surface, etc., simultaneously fit the riser board 2 into the riser mounting groove of each of the side boards 3 and 4 and the groove in three directions on the bottom surface of the upper tread board 1. It must be inserted from below. However, the first stage has a floor, so the lower part is blocked off. Further, in the second stage, the height of the riser board 2 was an obstacle and it was difficult to fit it. In addition, the worker has to bend down on the floor to work, which is a pain.

For this reason, there is a method of assembling the entire staircase first and then installing it in a predetermined position, but this method has the problem that the assembled staircase is heavy and large. Another method is to fasten the side board to the wall structural material in one place, lift the bottom end so that it rotates around that point, lift it off the floor, and fit the treads and risers, but this method has problems with weight and distortion. Another problem was that the treads and risers after fitting were in the way, making it difficult to drive nails to attach the side panels to the wall structural material.

On the other hand, in Patent Document 1, a working groove that slopes diagonally downward toward the rear is provided behind the riser mounting groove of the side plate, and after installing the footboard, the riser is inserted from below and the tip side is The invention relates to a riser mounting method in which the riser is guided to the riser mounting groove of the side plate while being rotated so as to be lifted upward.

Furthermore, Patent Document 2 discloses an invention relating to a construction method for stairs in which the entire rear part of the riser mounting groove of the side board is removed to facilitate the insertion of the riser, and a support member for supporting the tread is provided. Are listed.

Further, Patent Document 3 describes an invention relating to a stair assembly structure in which a lowermost riser board is inserted from the front of the stairway in a stairway of a side plate (straddle girder) of a hinadan stairway.

JP2006-299630A Japanese Patent Application Publication No. 2011-236577 Japanese Patent Application Publication No. 2016-37769

However, in the riser installation method described in Patent Document 1, the lowermost riser is fitted with the upper tread installed first, so the tip of the riser is inserted into an invisible groove in a low and narrow position. It is necessary to insert it by hand from below, which poses a problem that it is difficult to insert the hand and the work is time-consuming.

Furthermore, the staircase construction method described in Patent Document 2 similarly requires work to be carried out in a low, narrow and difficult-to-see position, and also requires the support member for supporting the tread to be attached to a predetermined position as a separate part. It becomes a work burden.

In addition, in the staircase assembly structure described in Patent Document 3, the risers are inserted from the front, and the left and right ends of the risers cannot be held down by the side plates, which impairs the stability of fixing the risers. There's a problem.

The present invention solves the above-mentioned conventional problems, and provides a method for constructing a staircase, a staircase, and a side plate for a staircase, which allows easy fitting of risers, does not require separate parts, and has excellent stability. It is something.

In order to solve the above problems, the stair construction method of the present invention includes: a pair of side plates disposed in parallel with a tread mounting groove and a riser mounting groove; a tread fitted into the tread mounting groove; A method of constructing a staircase comprising a riser fitted in the riser mounting groove, wherein a working groove is provided behind the riser mounting groove, and the riser is vertically moved from a backward leaning position within the working groove. It is characterized in that it is moved to a posture or a forward-leaning posture and then fitted into the riser mounting groove.

Preferably, the working groove is provided so as to communicate with the tread plate mounting groove, and the riser plate is inserted into the tread plate mounting groove to take a backward tilted position.

Preferably, the side plate is provided with an insertion groove for the riser, one side of the insertion groove communicates with the lower oblique side of the side plate, and the other side communicates with the working groove, so that the riser is inserted into the side plate. It is characterized by being inserted through the groove and tilted backwards.

Preferably, the working groove is provided so as to communicate with the lower oblique side of the side plate, and the riser is inserted into the working groove from the lower oblique side of the side plate in a backwardly inclined position. .

Preferably, the step board is moved forward while the upper end of the riser board is fitted into an insertion groove formed on the lower surface of the step board, thereby moving the riser board from a backward leaning position to a vertical position or a forward leaning position. It is characterized by

Further, the side plates of the staircase of the present invention include a pair of side plates disposed in parallel in which a tread mounting groove and a riser mounting groove are formed, a tread fitted in the tread mounting groove, and a tread fitted in the riser mounting groove. A side plate of a staircase consisting of a riser board to be fitted, the side plate further having a working groove, the working groove communicating with the rear of the riser mounting groove and below the tread mounting groove. The riser is inserted from the introduction port, passes through the working groove, and can be inserted into the riser mounting groove.

Preferably, the riser is further provided with positioning means for positioning the riser in a backwardly tilted position.

Preferably, the footboard mounting groove is enlarged in the vertical direction toward the rear.

Preferably, the step plate mounting groove is deeper than the working groove.

Further, the stair tread of the present invention includes a pair of parallel side plates in which a tread mounting groove and a riser mounting groove are formed, a tread fitted in the tread mounting groove, and a tread fitted in the riser mounting groove. A stair tread consisting of a riser to be fitted, characterized in that a protrusion that comes into contact with the riser is provided behind an insertion groove formed on the lower surface into which the upper end of the riser is fitted. shall be.

Further, the staircase of the present invention includes a pair of side plates disposed in parallel in which a tread mounting groove and a riser mounting groove are formed, a tread fitted into the tread mounting groove, and a tread fitted into the riser mounting groove. The staircase further includes a working groove in the side plate, the working groove communicates with the rear of the riser mounting groove and below the tread mounting groove, and the working groove communicates with the riser mounting groove. The plate is inserted from the inlet, passes through the working groove, and can be inserted into the riser plate mounting groove.

The stair construction method of the present invention includes a pair of side plates arranged in parallel with a tread mounting groove and a riser mounting groove formed therein, a tread fitted into the tread mounting groove, and a tread fitted into the riser mounting groove. Since this is a construction method for stairs consisting of risers, the treads and risers are held by the respective grooves, no separate parts are required, and the stability of fixing the risers is excellent. In addition, a working groove is provided behind the riser mounting groove, and the riser is moved from a backward-tilting position to a vertical or forward-tilting position within the working groove and then fitted into the riser mounting groove, so the riser is attached to the tread. The height of the riser plate does not get in the way even when the lower end of the side plate is placed on the floor, making work easier. be. Furthermore, the lower end of the riser board will not rub against the floor and will not be damaged.

In addition, the working groove is provided so as to communicate with the tread mounting groove, and when inserting the riser from the tread mounting groove to take a backward tilting position, the riser can be inserted without the tread, and is similar to the tread. The work is even easier because it can be inserted horizontally.

In addition, an insertion groove for the riser board is provided on the side plate, one side of the insertion groove communicates with the lower oblique side of the side plate, and the other side communicates with the working groove, and the riser board is inserted through the insertion groove to take a backward tilting position. In some cases, the riser can be inserted downward, making the work even easier.

In addition, the working groove is provided so as to communicate with the lower oblique side of the side plate, and when inserting the riser into the working groove from the lower oblique side of the side plate in a backward tilted position, insert the riser into the working groove from the lower oblique side of the side plate. The work is even easier because all you have to do is follow the directions.

In addition, if you want to move the riser from a backward leaning position to a vertical position by fitting the top end of the riser into the insertion groove formed on the bottom of the tread and moving the riser forward, you can simply move the riser forward. This allows the riser to be moved to a predetermined position, making the work easier.

The side plates of a staircase of the present invention include a pair of side plates disposed in parallel with a tread mounting groove and a riser mounting groove, a tread fitted into the tread mounting groove, and a tread fitted into the riser mounting groove. Since the side plate of the staircase is made up of a riser board, the tread board and the riser board are held by the respective grooves, no separate parts are required, and the stability of fixing the riser board is excellent. Further, a working groove is further provided in the side plate, and the working groove communicates with the rear of the riser mounting groove and the lower part of the tread mounting groove, and the riser is inserted from the inlet and passes through the working groove. Since the riser board can be inserted up to the riser mounting groove, the riser board can be inserted without a footboard. Further, even when the lower end of the side plate is placed on the floor, the height of the riser plate does not get in the way, making the work easy. Furthermore, the lower end of the riser board will not rub against the floor and will not be damaged.

In addition, when a positioning means for positioning the riser in a backward-inclined position is provided, by positioning the upper end of the riser according to the position in the height direction of the insertion groove of the tread, the bottom surface of the tread in the insertion groove can be adjusted. Since the upper end of the riser plate can be easily fitted into the insertion groove formed in the groove, the work is further facilitated.

Additionally, if the tread mounting groove expands vertically toward the rear, moving the angle of the tread in the vertical direction will make it easier to fit the top end of the riser into the insertion groove formed on the bottom surface of the tread. Therefore, the work is even easier.

In addition, if the tread mounting groove is deeper than the working groove, the tread support part that supports the tread can be left even in the front-rear range where the working groove is provided, so the tread can be supported more stably. can.

Further, the stair tread of the present invention includes a pair of side plates disposed in parallel with a tread mounting groove and a riser mounting groove, a tread fitted into the tread mounting groove, and a pair of side plates fitted into the riser mounting groove. Since the stair tread consists of a riser board, the tread board and the riser board are held by the respective grooves, no separate parts are required, and the stability of fixing the riser board is excellent. In addition, a protrusion that comes into contact with the riser is provided behind the insertion groove formed on the lower surface into which the upper end of the riser is fitted, so that by guiding the upper end of the riser into the insertion groove, the lower surface of the tread The work is easy because the upper end of the riser plate can be easily fitted into the insertion groove formed in the groove.

Further, the staircase of the present invention includes a pair of side plates arranged in parallel, each having a tread mounting groove and a riser mounting groove, a tread fitted into the tread mounting groove, and a tread fitted into the riser mounting groove. Since the stairs are made up of risers, the treads and risers are held by the respective grooves, no separate parts are required, and the stability of fixing the risers is excellent. Further, a working groove is further provided in the side plate, and the working groove communicates with the rear of the riser mounting groove and the lower part of the tread mounting groove, and the riser is inserted from the inlet and passes through the working groove. Since the riser board can be inserted up to the riser mounting groove, the riser board can be inserted without a footboard. Further, even when the lower end of the side plate is placed on the floor, the height of the riser plate does not get in the way, making the work easy. Furthermore, the lower end of the riser board will not rub against the floor and will not be damaged.

As described above, according to the present invention, it is possible to provide a method for constructing a staircase, a staircase, and a side panel for a staircase, which allows easy fitting of risers, does not require separate parts, and has excellent stability.

FIG. 2 is a perspective view showing a side plate according to Embodiment 1 of the present invention. FIG. 2 is an explanatory diagram of a staircase construction method according to Embodiment 1. FIG. 2 is an explanatory diagram of a staircase construction method according to Embodiment 1. FIG. 2 is an explanatory diagram of a staircase construction method according to Embodiment 1. FIG. 2 is an explanatory diagram of a staircase construction method according to Embodiment 1. FIG. 2 is an explanatory diagram of a staircase construction method according to Embodiment 1. FIG. 3 is a side view showing a state in which the riser is fitted into the footboard. It is a side view showing the upper end part of a riser. FIG. 3 is a perspective view showing a side plate of a staircase according to a second embodiment. FIG. 7 is a perspective view showing a side plate of a staircase according to Embodiment 3. FIG. 7 is a perspective view showing a side plate of a staircase according to Embodiment 4. FIG. 7 is a perspective view showing a side plate of a staircase according to a fifth embodiment. FIG. 7 is an explanatory diagram of a method of constructing stairs according to a sixth embodiment. It is an explanatory view of the construction method of the stairs concerning Embodiment 7. It is an explanatory view of the construction method of the stairs concerning Embodiment 8. It is a perspective view showing a staircase.

Next, a method for constructing stairs according to an embodiment of the present invention will be described with reference to FIGS. 1 to 16. The staircase construction method according to this embodiment is for constructing a staircase 100 shown in FIG. 16. The staircase 100 has a plurality of horizontal treads 1 and a plurality of vertical risers 2 arranged between a pair of side plates 3 and 4 extending diagonally upward and arranged in parallel to form a plurality of steps. It is supposed to be done. The pair of side plates 3 and 4 are each formed with a tread mounting groove for fitting the tread 1 and a riser mount groove for fitting the riser 2, and the tread 1 and the riser 2 are fitted into the groove. It looks like this.

(Embodiment 1)
FIG. 1 is a perspective view showing a side plate 3 according to Embodiment 1 of the present invention. Note that the side plate 4 facing the side plate 3 also has a similar (symmetrical) structure to the side plate 3.

The first stage of the inner surface of the side plate 3 is provided with a footboard mounting groove 11 for fitting the footboard 1, a riser plate mounting groove 12 for fitting the riser plate 2, and a rear side of the riser plate mounting groove 12. A working groove 13 is formed.

The footboard mounting groove 11 is a groove in the front-rear direction that corresponds to the thickness of the footboard 1, and has an upper edge formed horizontally and a lower edge slightly downward toward the rear. Accordingly, the footboard mounting groove 11 expands in the vertical direction toward the rear.

The riser mounting groove 12 is formed in the vertical direction at a position slightly rearward of the tip of the tread mounting groove 11, and when the riser 2 is fitted, the left and right front ends of the riser 2 are connected to the riser. It comes into contact with the front edge of the mounting groove 12.

The working groove 13 is a substantially triangular notch having two vertices on the upper side and one apex on the lower side, and is provided at the rear of the riser plate mounting groove 12, and has the same depth as the riser plate mounting groove 12. ing. The rear oblique side of the working groove 13 is composed of a circular arc portion 13a and a straight portion 13b. The straight portion 13b functions as a "positioning means" which will be described later. The working groove 13 communicates with the rear of the riser mounting groove 12 and below the footboard mounting groove 11.

The depth of the footboard mounting groove 11 is deeper than the depth of the working groove 13. As a result, the footboard support portion 11a that supports the footboard 1 remains even in the range in the front-rear direction where the working groove 13 is provided.

Note that the riser can be inserted between the pair of side plates 3 and 4, between the tread mounting grooves 11 and 11, between the working grooves 13 and 13, and between the riser mounting grooves 12 and 12.

The second stage of the inner surface of the side plate 3 is provided with a footboard mounting groove 21 for fitting the footboard 1, a riser plate mounting groove 22 for fitting the riser board 2, and a rear side of the riser plate mounting groove 22. A working groove 23 is formed.

The footboard mounting groove 21 is a groove in the front-rear direction that corresponds to the thickness of the footboard 1, and has an upper edge formed in the horizontal direction and a lower edge slightly downward toward the rear. Accordingly, the footboard mounting groove 21 expands in the vertical direction toward the rear.

The riser mounting groove 22 is formed in the vertical direction at a position slightly rearward of the tip of the tread mounting groove 21, and when the riser 2 is fitted, the left and right front ends of the riser 2 are connected to the riser. It comes into contact with the front edge of the mounting groove 22.

The working groove 23 is a substantially triangular notch with two vertices on the upper side and one apex on the lower side, which is provided behind the riser plate mounting groove 22, and has the same depth as the riser plate mounting groove 22. There is. The rear oblique side of the working groove 23 is constituted by an arcuate portion 23a. The working groove 23 communicates with the rear of the riser mounting groove 22 and below the footboard mounting groove 21 .

The depth of the footboard mounting groove 21 is deeper than the depth of the working groove 23. As a result, the footboard support portion 21a that supports the footboard 1 remains even in the range in the front-rear direction where the working groove 23 is provided.

Note that the riser can be inserted between the pair of side plates 3 and 4, between the footboard mounting grooves 21 and 21, between the working grooves 23 and 23, and between the riser mounting grooves 22 and 22.

Next, a method for constructing stairs (first stage) according to the first embodiment will be described with reference to FIGS. 2 to 6. Note that in FIGS. 2 to 6, the portions indicated by dotted lines are virtual lines for explanation.

First, as shown in FIG. 2(A), the riser board 2 is inserted in the horizontal direction from the rear entrance (inlet) of the first step board mounting groove 11. The inserted riser board 2 rotates so that the front side thereof is lowered while being guided by the arc portion 13a of the working groove 13, as shown in FIG. 2(B). Then, as shown in FIG. 2(C), the work groove 13 is positioned in a backward tilted position along the straight line portion 13b of the working groove 13. At this time, the upper end of the riser board 2 is in a state of slightly protruding from the lower edge of the footboard mounting groove 11.

The shape of the groove for inserting the riser board 2, that is, the passageway at the left and right ends of the riser board, which consists of the tread mounting groove 11, the riser board mounting groove 12, and the working groove 13, is as shown in FIG. 2(B). Even when the riser board 2 is inserted while its upper and lower ends are in contact with the top surface of the tread mounting groove 11 and the front surface of the riser board mounting groove 12, the back side of the riser board (the surface that becomes lower during insertion) ) are formed on the lower surface of the footboard mounting groove 11 and the upper surface of the working groove 13 so as not to be intrusive.
R(θ)=L×(cosθ+sinθ−sinθ×cosθ)−d
however,
L: Length (height) of riser, d: Thickness of riser. R and θ are local coordinate parameters of the curve.
Such a curve is determined by the length (height) of the riser board and the thickness of the riser board, and if the notch is smaller than that, it will be cut out. Considering the tolerance of the shape of the riser and the ease of insertion, it is possible to make a larger cutout. That is, one or more straight or curved cuts may be made at positions that do not protrude beyond this curve to the working groove side. The arcuate portions 13a and 23a of this embodiment are curves with slightly larger cuts than the above-mentioned curves, taking into account the tolerance of the riser.
The straight portion 13b for positioning the riser 2 in a predetermined backward tilted position is arranged so that when the lower end of the riser is placed in a predetermined position, its upper end is attached to the lower surface of the installed tread (see FIG. 2(C)). (horizontal dotted line in the groove) form a straight line at an angle that is lower (minimum condition for inserting the tread). Preferably, a straight line is formed at an angle that allows the footboard to protrude from the lower surface of the footboard mounting groove (solid line inclined rearward).
θ=cos ⁻¹ {(L−a)/√(L ² +d ² )}+cos ⁻¹ {L/√(L ² +d ² )}
however,
L: Length (height) of the riser, d: Thickness of the riser, a: Length of the riser entering the tread groove.
θ: The angle at which the riser board is laid down from the mounting groove (vertical).
The angle of such a straight line from the riser mounting groove (vertical) is determined by the length (height) of the riser, the thickness of the riser, and the length of the riser into the tread groove. This straight line, like the above curve, does not necessarily have to be a straight line, but two points may be placed on this straight line to determine the angle of the riser, and the shape may be changed so that it does not protrude from the straight line to the working groove side. good.
Here, the above curve and straight line are determined by the length of the riser, its thickness, and the length that fits into the tread groove, but if the length (height) of the riser, which is related to the height of one stair step, changes In some cases, a straight line cutout cuts out the entire curved part, leaving only the straight line part.

Next, as shown in FIG. 3(D), the footboard 1 is inserted in the horizontal direction from the rear of the first step footboard attachment groove 11. Here, an insertion groove 1a into which the upper end portion of the riser board 2 is fitted is formed on the lower surface of the footboard 1 along the width direction of the stairs. Then, as shown in FIG. 3(E), when the position of the upper end of the riser 2 positioned in the backward leaning position and the position of the insertion groove 1a of the footboard 1 match, the position shown in FIG. 3(F) is reached. As shown in , pull down the rear side of the footboard 1. Then, the upper end portion of the riser board 2 is fitted into the insertion groove 1a of the footboard 1.

Next, as shown in FIG. 4(G), the step board 1 is moved forward with the upper end of the riser board 2 fitted into the insertion groove 1a of the step board 1. At this time, lift the rear side of the tread plate 1 while making sure that the upper end of the riser plate 2 does not come off the insertion groove 1a (the tip of the tread plate 1 hits the upper edge of the tread mounting groove 11, so it will lift up naturally). . The riser 2 moves within the working groove 13 from a backwardly tilted position to a vertical position. Then, as shown in FIG. 4(H), the left and right front ends of the riser 2 come into contact with the front edges of the riser mounting groove 12.

Finally, as shown in FIGS. 4(H) and 4(I), a wedge 9 is driven into the gap between the bottom surface of the footboard 1 and the footboard mounting groove 11 and fixed.

Note that the steps of fitting the upper end portion of the riser 2 into the insertion groove 1a of the footboard 1 shown in FIGS. 3(D) to (F) can be performed as shown in FIGS. 5(D') to (F'). . A projection 1b is provided on the lower surface of the footboard 1 shown in FIGS. 5(D') to (F'). The protrusion 1b is provided at the rear of the insertion groove 1a, and when the position of the upper end of the riser 2 positioned in the backward tilted position and the position of the insertion groove 1a of the footboard 1 match, the riser 2 It is designed to come into contact with the rear surface of the Thereby, the upper end portion of the riser 2 can be guided into the insertion groove 1a, and it can be made difficult to come off even while the riser 2 is being moved from the backward tilted position to the vertical position.

The protrusion 1b does not need to be provided over the entire width of the footboard 1; for example, a rod-shaped protrusion may be provided near the center in the width direction. Further, the protrusion 1b may be formed integrally with the footboard 1, or a hole may be formed in the lower surface of the footboard 1 into which a protrusion member is inserted, and the protrusion member may be inserted as appropriate at the work site. . Further, the projection member can be removed after use and used as a fixing member for the lower part of the riser board 2.

Further, the steps of fitting the upper end portion of the riser board 2 into the insertion groove 1a of the footboard 1 shown in FIGS. 3(D) to (F) can be performed as shown in FIGS. 6(J) to (L). First, as shown in FIG. 6(J), the position of the insertion groove 1a of the footboard 1 is set to be beyond the position of the upper end of the riser board 2, which is positioned in the backward leaning position. Next, as shown in FIG. 6(K), the footboard 1 is moved backward while pulling down the rear side thereof. Then, as shown in FIG. 6(L), the protrusion 1a is fitted into the insertion groove 1b of the footboard 1.

FIG. 7 is a side view showing how the riser board 2 is fitted into the footboard 1. As shown in FIG. 7, when the footboard 1 moves forward, the riser board 2 is guided upward while rotating counterclockwise from the backward tilted position to the vertical position, and is fitted into the insertion groove 1a. Therefore, it is preferable to provide a bulge 1b on the rear side of the insertion groove 1a of the footboard 1 in accordance with the locus of the rear surface of the riser 2 as shown in FIG. Alternatively, it is preferable to provide the upper end of the riser 2 with a chamfered portion 2a as shown in FIG.

Next, a method for constructing stairs (second step) according to Embodiment 1 will be described. In the case of the second stage, similar to the first stage, first, the riser board 2 is inserted in the horizontal direction from the rear entrance (inlet) of the second stage footboard mounting groove 21. The inserted riser plate 2 is guided by the circular arc portion 23a of the working groove 23 and rotates so that the front side thereof is lowered. Then, the riser 2 moves from the backward tilted position to the vertical position within the working groove 23, and the left and right front ends of the riser 2 abut against the front edges of the riser mounting groove 22. Note that, unlike the first stage, the lower end of the riser mounting groove 22 is open, and the riser 2 will fall, but the height of the riser is high and its upper end will remain inside the riser mounting groove. , it will not fall out and fall down.

Next, the footboard 1 is inserted in the horizontal direction from the rear of the footboard mounting groove 21 and moved to a position where the tip comes into contact. Then, the riser board 2 is lifted upward and fitted into the insertion groove 1a of the footboard 1, and the lower end of the riser board 2 is appropriately fixed to the rear end of the first step board.

Finally, similarly to the first stage, the wedge 9 is driven into the gap between the bottom surface of the footboard 1 and the footboard mounting groove 21 to fix it.

The staircase construction method according to Embodiment 1 includes a pair of side plates 3, 4 arranged in parallel, each having tread mounting grooves 11, 21 and riser mounting grooves 12, 22, and fitting into the tread mounting grooves 11, 21. Since this is a construction method for stairs consisting of a tread 1 that is fitted with a tread and a riser 2 that is fitted into the riser mounting grooves 12 and 22, the tread 1 and riser 2 are held by the respective grooves, and separate parts are not required. It also has excellent stability in fixing risers. Further, working grooves 13 and 23 are provided behind the riser mounting grooves 12 and 22, and the riser 2 is moved from a backward tilted position to a vertical position within the working grooves 13 and 23, and is fitted into the riser mounting grooves 12 and 22. Since the riser board 2 can be inserted without the step board, and can also be inserted into the working grooves 13 and 23 in a backward tilted position, with the lower ends of the side boards 3 and 4 placed on the floor. The height of the riser board 2 does not get in the way, and the work is easy. Furthermore, the lower end of the riser board will not rub against the floor and will not be damaged.

In addition, the upper end of the riser 2 is fitted into the insertion groove 1a formed on the lower surface of the tread 1, and the tread 1 is moved forward to move the riser 2 from a backward tilted position to a vertical position, so that the tread 1 is moved forward. The riser board 2 can be moved to a predetermined position by simply moving the riser board 2 to a predetermined position, which further facilitates the work.

In addition, when the protrusion 1b that contacts the riser 2 is provided behind the insertion groove 1a, the insertion groove 1a formed on the lower surface of the footboard 1 can be guided by guiding the upper end of the riser 2 to the insertion groove 1a. This makes it easier to fit the upper end of the riser plate 2 into the upper end of the riser plate 2, making the work even easier.

In addition, since the tread plate mounting groove 11 expands in the vertical direction toward the rear, by moving the angle of the tread plate 1 in the vertical direction, the upper end of the riser plate 2 can be inserted into the insertion groove 1a formed on the lower surface of the tread plate 1. Since it is easier to fit in, the work is even easier.

Furthermore, since the positioning means (straight portion 13b) for positioning the riser 2 in a backward tilted position is provided, the upper end of the riser 2 can be positioned according to the position of the insertion groove 1a of the footboard 1 in the height direction. Since the upper end of the riser board 2 can be easily fitted into the insertion groove 1a formed on the lower surface of the footboard 1, the work is further facilitated.

Further, the working grooves 13 and 23 are provided so as to communicate with the tread mounting grooves 11 and 21, and the riser 2 is inserted into the tread mounting grooves 11 and 21 to take a backward tilting position, so that the riser 2 can be placed in the tread mounting groove 11 and 21. Since it can be inserted in the horizontal direction in the same way as the footboard 1, the work is even easier.

Furthermore, since the tread mounting grooves 11 and 21 are deeper than the working grooves 13 and 23, the tread support parts 11a and 21a that support the tread plate 1 can be left in the range in the front and rear direction where the working grooves 13 and 23 are provided. , the footboard can be supported more stably.

(Embodiment 2)
FIG. 9 is a perspective view showing the side plate 5 according to Embodiment 2 of the present invention. The side plate 5 according to the second embodiment has almost the same configuration as the side plate 3 according to the first embodiment, but differs in that it does not have a footboard support portion. That is, the depth of the tread mounting grooves 41 and 51 in the side plate 5 and the depth of the working grooves 43 and 53 are the same, and the tread support part that supports the tread plate 1 in the range in the front and rear direction where the working grooves 43 and 53 are provided is not exist.

The method for constructing stairs according to Embodiment 2 is similar to the method for constructing stairs according to Embodiment 1, and has similar effects, but the stability of the treads is reduced because there is no tread support part. . On the other hand, since the depths of the riser mounting grooves 42 and 52 become relatively deep, the stability of fixing the riser 2 increases.

(Embodiment 3)
FIG. 10 is a perspective view showing a side plate 6 according to Embodiment 3 of the present invention. The side plate 6 has a tread mounting groove 61, a riser mounting groove 62, and a working groove 63. The working groove 63 has a substantially fan-shaped shape, and the rear side thereof is an arcuate portion 63a that faces downward toward the rear. Furthermore, an insertion groove 6a is provided on the lower oblique side of the side plate 6. One side of the insertion groove 6a communicates with the lower oblique side of the side plate 6, and the other side communicates with the working groove 63.

The staircase construction method according to Embodiment 3 differs from the staircase construction method (first step) according to Embodiment 1 in that the riser 2 is inserted from the entrance (inlet) of the insertion groove 6a to take a backward leaning position. They are different in that they do When the riser plate 2 is inserted through the insertion groove 6a, the entire riser plate 2 is accommodated within the working groove 63 and assumes a backward tilted position. Then, the riser 2 is moved from the backward tilted position to the vertical position within the working groove 63, and when the upper end of the riser 2 slightly protrudes from the lower edge of the tread mounting groove 11, it is stopped once. do. At this time, it is preferable to provide a minute protrusion on the inner surface of the side plate 6 as a positioning means. Thereafter, in the same manner as the staircase construction method according to the first embodiment, the tread plate 1 may be inserted and the upper end portion of the riser plate 2 may be moved forward while fitting into the insertion groove 1a.

According to the staircase construction method according to the third embodiment, the insertion groove 6a for the riser board 2 is provided in the side plate 6, one side of the insertion groove 6a is formed on the lower oblique side of the side plate 6, and the other side is formed on the working groove 63. Since the riser board 2 is inserted into the insertion groove 6a and tilted backward, the riser board 2 can be inserted downward, which further facilitates the work.

(Embodiment 4)
FIG. 11 is a perspective view showing a side plate 106 according to Embodiment 4 of the present invention. The side plate 106 has a foot plate mounting groove 161, a riser plate mounting groove 162, and a working groove 163. The working groove 163 has a substantially fan-shaped shape, and the rear side thereof is an arcuate portion 163a that faces downward toward the rear, and extends to the lower oblique side of the side plate 106. There is an opening 106a (introduction port) where the arc portion 163a of the working groove 163 opens to the lower oblique side of the side plate 106, and there is no insertion groove 6a in the third embodiment.

The staircase construction method according to the fourth embodiment differs from the staircase construction method (first step) according to the third embodiment in that the riser 2 is inserted through the opening 106a to take a backward tilting position. By inserting the riser 2 through the opening 106a, rotating the riser 2 along a fan shape, and rotating it beyond the protrusion 164, the riser 2 is supported by the protrusion 164 and assumes a backward tilted posture. In this state, the protrusion 164 is arranged so that the upper end of the riser 2 slightly protrudes from the lower edge of the tread mounting groove 161. Thereafter, in the same manner as the staircase construction method according to the first embodiment, the tread plate 1 may be inserted and the upper end portion of the riser plate 2 may be moved forward while fitting into the insertion groove 1a.

According to the staircase construction method according to the fourth embodiment, the side plate 106 is provided with an opening 106a into which the riser 2 is inserted, and the riser 2 is inserted through the opening 106a and rotated to take a backward tilting posture. The work is easy because the plate 2 can be inserted through a relatively large opening.

(Embodiment 5)
FIG. 12 is a perspective view showing a side plate 7 according to Embodiment 5 of the present invention. The first stage of the side plate 7 has the same configuration as the side plate 3 according to the first embodiment, so a description thereof will be omitted. The second stage of the side plate 7 has a foot plate mounting groove 81, a riser plate mounting groove 82, and a working groove 83. The working groove 83 has a substantially fan-shaped shape, and the rear side thereof is an arcuate portion 83a that faces downward toward the rear. The working groove 83 communicates with the lower oblique side of the side plate 7.

The stair construction method according to the fifth embodiment is different from the stair construction method according to the first embodiment (second step) in that the riser board 2 is inserted into the working groove 83 from the lower oblique side of the side plate 7 in a backward tilted position. . That is, the working groove 83 is inserted through the inlet (inlet) that opens directly on the lower oblique side. Then, the riser 2 is moved from the backward tilted position to the vertical position within the working groove 83, and the left and right front ends of the riser 2 come into contact with the front edges of the riser mounting groove 82.

Next, the footboard 1 is inserted in the horizontal direction from the rear of the footboard attachment groove 81 and moved to a position where the tip comes into contact. Then, the riser board 2 is lifted upward and fitted into the insertion groove 1a of the footboard 1, and the lower end of the riser board 2 is appropriately fixed to the rear end of the first step board.

According to the staircase construction method according to the fifth embodiment, the working groove 83 is provided so as to communicate with the lower oblique side of the side plate 7, and the riser 2 is inserted into the working groove from the lower oblique side of the side plate 7 in a backward-inclined posture. 83, it is only necessary to place the riser board 2 along the lower oblique side of the side board 7, which further simplifies the work.

(Embodiment 6)
FIG. 13 is an explanatory diagram of a staircase construction method according to Embodiment 6. In the staircase construction method according to the sixth embodiment, the riser board 2 is installed not in a vertical position but in a forward tilted position. Therefore, the riser mounting groove 92 of the side plate 8 according to the sixth embodiment is provided so as to be tilted forward, and the riser plate 2 is configured to move from a backward tilted position to a forward tilted position within the working groove 93. There is.

Although FIG. 13 shows the side plate 8 corresponding to Embodiment 1 with the riser mounting grooves 92 tilted forward, the point of tilting the riser mounting grooves forward is applicable to all embodiments of the present invention. It is something.

(Embodiment 7)
FIG. 14 is an explanatory diagram of a staircase construction method according to Embodiment 7. FIG. 14(B) is an enlarged sectional view taken along the line aa in FIG. 14(A). In the construction method for stairs according to the seventh embodiment, only the side plate 3 of the pair of side plates 3 and 4 is provided with a working groove 13, and the side plate 4 is not provided with a working groove. As shown in FIG. 14(B), in the staircase construction method according to Embodiment 7, the step of moving the riser 2 from the backward-tilting position to the forward-tilting position was performed using only the working groove 13 of the side plate 3. Thereafter, the riser 2 in the vertical position is moved toward the side plate 4 and fitted into the riser mounting groove of the side plate 4. Therefore, the depth of the riser mounting groove 12 and the working groove 13 of the side plate 3 is twice that of the first embodiment.

Although FIG. 14 shows the side plates 3 and 4 corresponding to Embodiment 1 in which the working groove 13 is provided only on one side, the provision of the working groove only on one side is applicable to all embodiments of the present invention. It is possible.

In this way, the method for constructing stairs according to the seventh embodiment requires only providing a working groove on one side. However, digging too deep has the disadvantage of weakening the strength of the side panels, so it is necessary to process the risers by shortening the width (in the horizontal direction of the stairs) as appropriate. The stability of the riser is inferior to that of the embodiment.

(Embodiment 8)
FIG. 15 is an explanatory diagram of a staircase construction method according to Embodiment 8. Both FIG. 15(A) and FIG. 15(B) show another example of digging for inserting the second stage riser. In each of the side plates 10, the entire triangular cross-hatched part is dug, including the part of the already existing first-stage footboard mounting groove. When fixing to the first step tread with nails, etc., the length of the second step riser (up and down) is often the same as the bottom of the first step tread; It will be higher than the height of the top of the first step tread. In that case, it will be stuck on the floor and cannot be entered from below. Therefore, excavate the area to a height where the riser will fit. In FIG. 15(A), digging is performed horizontally at the same height. In addition, in FIG. 15(B), digging is performed in a shape that is higher than that and descends diagonally from above to the required height.

To install risers on the side panels that have been dug in this way, from the rear, move the vertical or slightly slanted riser horizontally or diagonally downward through the above-mentioned digging. Under the mounting groove, align it with the riser mounting groove (vertical) and insert it upward. As a result, the area to be dug in addition to the tread insertion groove is smaller than the area to dig the working groove shown in other embodiments, which shortens the processing time of the side plate and reduces costs. I can do it. In addition, with diagonally dug ones, the riser can be moved from the top to the bottom during work, so the worker can install it by holding the riser in a low position on the lower step and moving it naturally. , which is easier to work with. Furthermore, during installation, there is no need to place the lower end of the riser along the floor surface, so there is no chance of damaging the floor surface or the riser board. In addition, by raising the digging position upward, it is possible to increase the distance between the floor surface and the riser.

As described in the above embodiments, the riser board according to the present invention is inserted through the introduction port that is open at the rear of the side plate, passes through the working groove, and can be inserted to the riser mounting groove. In other words, it is inserted through the entrance of the tread mounting groove, which is the introduction port, the entrance of the insertion groove, or the entrance where the working groove opens directly on the lower side of the side plate, and the work is carried out through the tread mounting groove, insertion groove, etc. It is guided through the groove to the riser mounting groove.

As described above, the staircase construction method according to the present embodiment allows easy fitting of risers, does not require separate parts, and has excellent stability.

Although the method for constructing stairs according to the embodiment of the present invention has been described above, the present invention is not limited to the embodiment described above, and various other changes are possible.

1 Step board 2 Riser board 3, 4, 5, 6, 7, 8, 10, 106 Side plate 9 Wedge 11, 21, 31, 41, 51, 61, 71, 81, 91, 161 Step board mounting groove 12, 22, 32 , 42, 52, 62, 72, 82, 92, 162 Riser mounting groove 13, 23, 33, 43, 53, 63, 73, 83, 93 Working groove 103, 104, 163 Working groove 100 Stairs

Claims (3)

A staircase consisting of a pair of parallel side plates in which a tread mounting groove and a riser mounting groove are formed, a tread fitted into the tread mounting groove, and a riser fitted into the riser mounting groove. In a stair component used for a staircase in which the length of the second riser in the vertical direction is longer than the height of the upper end of the first step tread mounting groove from the floor,
The second step is formed behind the first step tread mounting groove and behind the rear edge of the second step riser mounting groove to a position higher than the height of the top of the first step tread. A stair component comprising a side plate and a riser, characterized by having a recess for inserting the riser from below. A staircase component comprising the side plate and riser according to claim 1. A staircase using the staircase component according to claim 2 .

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