JPH08177188A - Stairway - Google Patents

Abstract

PURPOSE: To provide a good appearance and produce component parts easily. CONSTITUTION: A stairway 10 comprises a pair of right and left open strings 20 in which pressing grooves 23 and height different part 20C are formed, step plates 30 which are pressed into the pressing grooves 23 and bridged across these open strings 20, and kick plates 40 arranged between step plates 30. Also an inside face 30C at the front of a close-fit groove 30A is provided at the front of the height different part 20C, and the kick plates 40 are made in contact with and arranged on the height different part 20C. Then these step plates 30 and kick plates 40 are further fitted closely and fixed to the open strings 20.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to stairs and can be used, for example, in a house having a plurality of floors.

[0002]

BACKGROUND ART Conventionally, stairs provided in a house have been
Many of them consist of sasara girders, steps and risers. In such a staircase, a plurality of grooves are horizontally formed on the inner side surfaces of a pair of right and left sasara girders, and step plates are fitted and erected in these grooves, and riser plates are arranged between the step plates. Set up.

These grooves are formed to be slightly wider than the thickness of the step plate, and the step plate is fitted into the groove and fixed to the smooth girder on the back side of the stairs by nailing or wedge driving. Also,
Structurally, the riser plate is generally formed such that its longitudinal dimension is slightly smaller than the dimension between the inner side surfaces of the right and left sasara girders.

[0004]

However, since the groove is formed slightly wider between the step plate and the groove, a gap is formed, and between the riser plate and the inner surface of the sasara girder. A gap is created due to the size of the riser plate being slightly smaller. Therefore, these gaps appear on the front side of the stairs, and there is a problem that a good appearance as a stair cannot be obtained.

In order to prevent these gaps, the thickness of the step plate and the width of the groove are made substantially the same, and the dimension in the longitudinal direction of the riser and the dimension between the inner side surfaces of the sasara girder are made substantially the same. However, in such a case, high processing accuracy is required for the sasara girder, step plate, and riser plate, which causes a problem in terms of production efficiency.

[0006] An object of the present invention is to provide a stairway which can obtain a good appearance and can easily produce its constituent members.

[0007]

A stairway of the present invention comprises a pair of left and right sasara girders, a plurality of step plates horizontally installed with a vertical interval between these sasara girders, and between these step plates. And a plurality of riser plates vertically disposed on the inner surface of each strut girder, and a plurality of press-fitting grooves horizontally extending forward from the rear end face of these girder girders are formed. , Each sasara girder is provided with a step portion which is a boundary between a thick portion in the front part and a thin portion in the rear part and extends in the vertical direction, and these step parts are formed on the rear side from the tip of each press-fitting groove. The end of each step plate is press-fitted into each press-fitting groove, the front surface of each riser plate abuts each step, and the bottom surface of each step plate is provided with a continuous fitting groove along the longitudinal direction. The upper end of each riser plate is fitted in these fitting grooves, and the inner side surface of the front side of these fitting grooves is And it is located in front of the stepped portion.

Further, it is desirable that at least one of the upper and lower inner surfaces at the starting end of each press-fitting groove is provided with a taper that expands rearward.

[0009]

In the present invention as described above, since the press-fitting groove for press-fitting the step plate is provided, there is no gap between the step plate and the groove as in the conventional case, and the fit-in plate is fitted. Since the front inner surface of the mounting groove is provided in front of the step portion which is the boundary between the front thick portion and the rear thin portion of the sasara girder, a riser plate is abutted against the step portion and erected. As a result, no groove is formed between the riser plate and the sasara girder. Therefore, there is no gap on the front side of the stairs,
The appearance of the stairs is good.

The width of the press-fitting groove is smaller than the thickness of the step plate so that the step plate can be press-fitted. Further, the lengthwise dimension of the riser plate can be brought into contact with the step portion of the sasara girder. Since it is sufficient to have such dimensions, when processing the press-fitting groove or when processing the riser plate, it is not necessary to have high processing accuracy as in the conventional case, and therefore the production of these constituent members becomes easy.

Further, when at least one of the upper and lower inner surfaces at the start end of each press-fitting groove is provided with a taper that expands rearward, press-fitting of the step plate into the press-fitting groove becomes easy.

[0012]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a staircase 10 according to this embodiment. The staircase 10 is erected on a floor surface (not shown), and has a pair of Sasara girders 20 arranged on the left and right, and four horizontally installed bridges with a space between the Sasara girders 20. 4 steps in the up-and-down direction composed of step plates 30 and four riser plates 40 arranged between these step plates 30 (however, between the step plates 30 and the floor surface at the bottom). It is the stairs. Note that the stairs according to the present invention are not limited to four steps, and the number of steps may be appropriately determined when implementing the steps.

As shown in FIG. 2, each sasara girder 20 (only one of which is shown here) has inner side surfaces 21 facing each other.
Further, there are four steps of press-fitting grooves 23 horizontally extending forward from the rear end surface 22 of the sasara girder 20. These press-fitting grooves 23 have a start end portion 23A which is the start end of the press-fitting groove 23 on the side of the sassar girder 20, and a front end portion 23B on the front side. The groove width t of each press fit groove 23 is smaller than the plate thickness T of each step plate 30 shown in FIG. 1 (t <
T). Here, a taper 23C that expands rearward is provided on the inner surface of the starting end portion 23A on the lower side.

Each Sasara girder 20 has a thick portion 2 at the front.
0A and the rear portion is a thin portion 20B, and the boundary between the thick portion 20A and the thin portion 20B is a step portion 20C extending in the vertical direction. These step portions 20C
Is formed on the rear side of the front end portion 23B of each press-fitting groove 23.

As shown in FIGS. 3 to 5, each step plate 30 is
Fitting groove 30 continuously provided on the lower surface in the longitudinal direction
While having A, the front end surface 30B in the width direction is pressed into contact with the front end portion 23B in the press-fitting groove 23 of each sasara girder 20. Each step plate 30 has an inner side surface 23 on the front side of the fitting groove 23 in a state of being press-fitted into the press-fitting groove 23.
C is located in front of the step portion 20C.

Each riser plate 40 is made up of a wooden plate-shaped main body 41 and an auxiliary member 4 fixed to the lower part of the rear surface by, for example, an adhesive.
And the upper end portion 41A of the main body 41 is fitted into the fitting groove 30A of the step plate 30 immediately above,
The front surface 41B is brought into contact with the step portion 20C of the sasara girder 20,
Further, it is erected on the step plate 30 immediately below through the auxiliary member 41. Further, these riser plates 40 are fixed to the step plate 30 and the sasara girder 20 by the nails 43 and 44 at both ends in the longitudinal direction of the auxiliary member 42 and the main body 41 (however,
At the bottom, the auxiliaries 42 are nailed to the floor).

In this embodiment, the assembling work of the stairs 10 is performed as follows. First, each step plate 30 is inserted into the press-fitting groove 23 provided in the right and left sasara girders 20 at the start end portion 2.
3A is driven by, for example, a wooden hammer or the like and press-fitted, and the tip surface 30B of the step plate 30 is inserted into the tip portion 23 of the press-fitting groove 23
Hit B.

Next, the riser plate 40 to which the auxiliary member 42 is fixed in advance is arranged between the upper and lower step plates 30. At this time, after the upper end portion 41A of the main body 41 is fitted into the fitting groove 30A of the step plate 30, the front surface 41B of the main body 41 is brought into contact with the step portion 20C of the sasara girder 20, and the step immediately below the auxiliary member 42 is interposed. Board 3
Stand at 0. Then, with the nails 43 and 44, the step plate 3
Fixed to 0 and Sasara girder 20.

Here, in the staircase 10, a gap 10A is formed between the riser plate 40 and the fitting groove 30A of the step plate 30 on the side of the upper end portion 41A of the main body 41 of the riser plate 40.
Since this gap 10A is formed on the lower surface of the step plate 30, it cannot be seen from the front of the stairs 10.

According to this embodiment, the following effects can be obtained. That is, the press-fitting groove 23 is provided such that its groove width t is slightly smaller than the plate thickness T of the step plate 30.
Since the front end surface 30B of 0 is pressed against the front end portion 23B of the press-fitting groove 23, the sasara girder 20 and the step plate 30
There is no gap between and. Also, the fitting groove 30A
Since the inner side surface 30C in front of the stepped portion 20C is provided in front of the stepped portion 20C, the riser plate 40 is brought into contact with the stepped portion 20C and fixed to the step plate 30 immediately below, thereby the sasara girder 20.
There is no gap between the riser and the riser plate 40. That is, when the inner side surface 30C is provided on the rear side of the step portion 20C, the riser plate 40 is brought into contact with the inner side surface 30C before being brought into contact with the step portion 20C. A gap is formed between the plate 40 and the conventional problem cannot be solved. As described above, no gap is formed on the front side of the stairs 10, and a staircase having a good appearance can be formed.

The press-fitting groove 23 has a groove width t of the step plate 3
Since it is smaller than the plate thickness T of 0 and the step plate 30 can be press-fitted, and the riser plate 40 is only processed to have a length to be brought into contact with the step portion 20C of the sasara girder 20. It is possible to easily manufacture the sasara girder 20, the step plate 30, and the riser plate 40 without requiring high processing accuracy as in the conventional case.

Further, since the starting end portion 23A of the press-fitting groove 23 is provided with the taper 23C which is enlarged rearward, the step plate 30 can be easily press-fitted into the press-fitting groove 23 when assembling the stairs. The assembling work of the stairs 10 can be easily performed.

Conventionally, the step plate was nailed or wedged to be fixed to the sasara girder, but in this embodiment, the step plate 3 is used.
You just need to press 0 into the press-fit groove 23 of the sasara girder 20,
In addition to the work of attaching the skirting board, nailing or wedge driving of the step plate 30 can be omitted, so that the assembling work of the stairs 10 can be performed more efficiently.

The present invention is not limited to the above-described embodiments, but includes other configurations and the like that can achieve the object of the present invention, and the following modifications and the like are also included in the present invention. For example, in the above-described embodiment, the taper 23C of the press-fitting groove 23 is provided on the lower side of the starting end portion 23A, but it may be provided on the upper side, or on both sides of the lower side and the upper side. Good.

In the above embodiment, the riser plate 40 is used as the auxiliary member 4.
Although it was erected upright via 2 and was fixed to the step plate 30 and the sasara girder 20C by the nails 43 and 44, in the riser plate 40, the auxiliary member 42 is omitted and the step plate 3 is directly attached.
It may be vertically fixed to 0. In addition to nailing, the mounting method may be fixed by, for example, an adhesive material, or may be detachably mounted, and an appropriate mounting method may be used for the implementation.

In the above embodiment, the riser plate 40 is formed in the shape of a wooden plate, but it is not limited to a wooden plate, and it may be made of synthetic resin, for example. Further, the riser plate 40 is not limited to a plate shape and may be formed as, for example, a frame body. In this case, the frame body is detachably attached to the step plate and the sasara girder, and the filter is attached to the portion surrounded by the frame. The air conditioner for collective air conditioning that circulates conditioned air through the living rooms and corridors in the building is placed in the space behind the stairs, so that the kicking plate made of a frame body can be used as a conditioned air intake port. And so on.

[0027]

As described above, according to the present invention, since the step plate is press-fitted into the press-fitting groove and the riser plate is disposed in contact with the step portion, the step plate and the sasara girder are disposed. In addition, there is no gap between the riser plate and the sasara girder, and it is possible to make a staircase with a good appearance, and the press-fit groove can be made smaller than the thickness of the step plate so that the step plate can be press-fitted. Since it is sufficient to provide the riser plate so that it can be brought into contact with the stepped portion of the sasara girder, high machining accuracy is not required when machining those sasara girder, step plate and riser plate. There is an effect that it is possible to easily produce the constituent members of the stairs.

Further, by providing a taper that expands rearward on at least one of the upper and lower inner surfaces at the start end of the press-fitting groove, the step plate can be press-fitted easily, so that the assembling work of the stairs is more efficient. It has the effect of being able to perform well.

[Brief description of drawings]

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

FIG. 2 is a side view showing a sasara girder which is a constituent member of the embodiment.

FIG. 3 is an enlarged view of a main part viewed from an arrow III in FIG.

FIG. 4 is a sectional view taken along line IV-IV in FIG.

5 is a partially schematic side view seen from an arrow V in FIG. 1. FIG.

[Explanation of symbols]

 10 stairs 20 sasara girder 20A thick part of sasara girder 20B thin part of sasara girder 20C step part 21 inner side surface of sasara girder 23 press fit groove 23B tip part which is the tip of press fit groove 30 step plate 30A fitting groove 30B step plate Tip surface 30C which is an end portion 30C Inner side surface in front of the fitting groove 40 Raising plate 41A Upper end portion which is the upper end of the lapping plate 41B Front surface of the lapping plate

Claims (2)

[Claims] 1. A pair of right and left sasara girders, a plurality of step plates horizontally installed with a vertical interval between these sasara girders, and a plurality of risers vertically arranged between the step plates. And a plurality of press-fitting grooves horizontally extending forward from the rear end surfaces of the sasara girders are formed on the inner surface of each of the girders. Is provided at the boundary between the thick-walled portion and the rear thin-walled portion extending in the vertical direction, and these stepped portions are formed on the rear side of the tips of the press-fitting grooves, and the press-fitting grooves are provided in the press-fitting grooves. An end portion of each step plate is press-fitted, a front surface of each riser plate is brought into contact with each step portion, and a bottom surface of each step plate is provided with a fitting groove continuous in the longitudinal direction, The upper ends of the riser plates are fitted in these fitting grooves, and the inside of the front side of these fitting grooves is A staircase, the surface of which is located in front of the stepped portion. 2. The staircase according to claim 1, wherein at least one of the upper and lower inner surfaces at the start end of each press-fitting groove is provided with a taper that expands rearward.