JP2566103B2 - Wooden folding stairs and its construction method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an indoor wooden folded staircase which is a subunit in a prefabricated house by a wooden panel construction method and a construction method thereof.

[0002]

2. Description of the Related Art As a wooden staircase in a prefabricated house using a wooden panel construction method, a technique for combining a staircase wall panel with a stepped plate and a staircase unit has been disclosed in Japanese Utility Model Publication Sho 56-174.
It is known from Japanese Patent No. 630.

A wooden stair unit is constructed by fixing a riser plate to the front end side of one step plate, and assembling side plates at the left and right ends of the step plate to form a step of another wooden step unit adjacent to the riser plate. A technique for actually assembling a plate and a plate is known from Japanese Utility Model Publication No. 4-24026.

[0004]

Although the wooden stairs are sub-unitized as described above, first, in the technique disclosed in Japanese Utility Model Laid-Open No. 56-174630, in addition to the stair units, steps are provided. It was necessary to specially prepare the staircase wall panel with the board receiving bar, that is, the wall panel of the staircase had to be specially processed.

Further, in the technique disclosed in Japanese Utility Model Publication No. 4-24026, at least units corresponding to the number of steps of stairs are prepared and connected to the wall panel each time in addition to the connection by actual fixing. Work is required, that is, there is room for improvement in terms of assembly work.

In particular, in the case of a wooden staircase for indoor use, it is desirable to consider the workability while reducing the number of parts and to appropriately form a sub-unit.

[0007] Therefore, an object of the present invention is to provide a minimum necessary sub-unit that can be installed without special processing or complicated assembling work for each step of a wall panel of a staircase, and to improve workability. The objective is to provide a wooden folded staircase for indoor use that achieves improvement as well as stable quality and shortened construction period.

[0008]

In order to solve the above problems SUMMARY OF THE INVENTION The present invention includes a lower straight staircase portion of the wooden landings portion, the upper straight staircase portion is constituted by a framing portion and the partition wall portion, the three
It is a wooden folding stairs are installed at a place surrounded by the wall, is connected to the lower end to the lower floor of the floor surface, the left and right bamboo
A lower straight stairway unit wood made by assembling in parallel a plurality of stair treads between Luo digits, it is connected to the upper end to the floor of the upper floors, comprising assembled in parallel a plurality of stair treads between the right and left sasara digit A wooden upper straight staircase unit, and a wooden upper landing land unit connected below the upper straight staircase unit and having a flat plate assembled on a shaft, and connected next to this upper landing land unit by one step lower. Between the lower straight staircase unit and a wooden lower landing unit connected by a flat plate on the frame, and between the lower landing unit and the floor of the lower floor. A wooden frame unit installed in
With one side is connected to sasara digits before Symbol lower straight staircase unit, wherein the sasara digit of the upper straight stair units are connected to the other side, and the lower floor of the floor face of the upper floor of the floor be provided with a wooden partition wall unit which is interposed between,
Of the lower straight staircase unit and the upper straight staircase unit
Each outer sasara girder is surrounded by a wall on the three sides.
It is characterized in that it is connected to the wall surfaces on both sides, respectively .

The invention according to claim 2 is the sub-device described above.
The wooden folded staircase according to claim 1, which is unitized.
The frame units are connected next to each other.
Connection part between the upper landing unit and the lower landing unit
Is supported by the lower surface of the lower straight staircase unit.
In addition, the both landing units are connected to the wall surface to be connected,
It is characterized by being supported by the wall surface .

Further, the invention according to claim 3 is as described above.
The wooden folded staircase according to claim 1, which is made into a sub-unit
It is a construction method that is installed in a place surrounded by walls on three sides.
The frame unit on the bottom floor and the back wall.
The first assembling step to determine the lower straight staircase unit,
It is fixed to the frame unit and is on the lower floor side and one side.
Second assembly step for fixing to the lower wall, and the lower landing unit
Put the knit on the lower straight staircase unit and the frame unit.
And a third assembly step for fixing it on the upper part,
Fix the nosing member that hangs sideways to the knit, and
Fix the member to the lower landing unit and the back wall
The fourth and fifth assembly steps, and the partition wall unit,
Fixed to the side of the lower straight staircase unit,
The sixth assembly step of fixing to the floor surface of the
Knit the upper landing unit and the partition wall unit.
Fixed to the floor of the upper floor and the wall on the other side.
And a seventh assembling step .

The invention according to claim 4 is the above.
The wooden folded staircase according to claim 2, which is made into a sub unit.
Is a construction method in which the
Then, connect the above frame units side by side later.
Between the upper landing unit and the lower landing unit
A first assembling step of fixing to the floor surface and the back wall surface of the lower floor so that the lower straight staircase unit is fixed to the frame assembly unit so as to be located below the connecting portion, and the floor of the lower floor. A second assembling step of fixing the surface to one side wall surface; fixing the lower landing unit on the lower straight staircase unit and the frame unit; A third assembling step of fixing to the inner wall surface, and a nose member that hangs laterally to the upper landing unit, and the nose member is fixed to the lower landing unit and the inner wall surface. Fourth and fifth assembling steps for fixing the upper landing unit to the side surface on the other side and the inner wall surface, and fixing the partition wall unit to the side surface of the lower straight staircase unit, and the floor of the lower floor. A sixth assembly step of fixing to the surface,
It is characterized by comprising a seventh assembling step of fixing the upper straight staircase unit to the upper landing unit and the partition wall unit, and fixing it to the floor surface of the upper floor and the wall surface on the other side.

[0012]

The function of the wooden folded staircase according to the present invention is that the left and right sasara
A lower straight staircase unit and an upper straight staircase unit including girders , a lower landing unit and an upper landing land unit having a step connected between them, a frame unit supporting a lower surface of the lower landing unit, and a lower unit . Since it is composed of 6 units including a partition wall unit for partitioning both the upper and lower straight staircase units , consideration is given to the efficiency of transportation workability.
By taking into account the necessary minimum subunits, good indoor accommodation and stable quality can be achieved. In addition, the frame unit of both landing units
Supports the connecting part, increasing the strength as a folded staircase.
You.

The unit is installed in a place surrounded by wall surfaces on three sides, and each unit or each unit and the wall surface are in contact with each other.
By being continued or fixed , the strength as a folded staircase can be secured, and it is not necessary to separately provide a handrail around the stairs.

The wooden folded staircase according to claim 1
As for the assembly procedure, first,
The frame unit for supporting the lower floor and the back wall
Fix on the surface. Next, attach the lower straight staircase unit to the frame
It is fixed to the unit and fixed to the bottom floor and one side wall.
Set. Next, the lower landing unit, the lower straight staircase unit
Fixed on the top and above the frame unit. Next, the upper land Yu
Fix the nosing member that hangs sideways to the knit, and
The member is fixed to the lower landing unit and the back wall. Next
The partition wall unit to the side of the lower straight staircase unit.
And fix it on the bottom floor. Finally, the upper straight staircase
Fix the unit to the upper landing unit and the partition unit
And fix it to the floor on the upper floor and the wall on the other side. Also,
Regarding the procedure for assembling the wooden folded stairs according to claim 2 ,
First, the frame unit for supporting the lower surface of the lower landing unit is connected to the upper landing unit which is subsequently connected next to each other.
Located below the connection between the knit and the lower landing unit
Fix it to the floor on the lower floor and the wall in the back so that you can place it. Next, the lower straight staircase unit is fixed to the frame unit, and also fixed to the floor surface of the lower floor and the wall surface on one side. next,
The lower landing unit is fixed on the lower straight staircase unit and on the frame unit, and is fixed to the wall on one side and the wall on the back. Next, a nose member hanging horizontally is fixed to the upper landing unit, the nosing member is fixed to the lower landing unit and the back wall surface, and the upper landing unit is fixed to the other side surface and the back surface. Fix on the wall. Next, the partition wall unit is fixed to the side surface of the lower straight staircase unit and also fixed to the floor surface of the lower floor. Finally, the upper straight staircase unit is fixed to the upper landing unit and the partition wall unit, and also fixed to the floor surface of the upper floor and the wall surface on the other side.

In this way, the assembly work of the wooden folding staircase that has been made into subunits is completed, and the assembly work is 7 steps (6 steps if the step of assembling the upper landing unit includes the mounting of the nosing member). Since it has been simplified
The work period can be shortened.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of a wooden folded staircase according to the present invention will be described below with reference to FIGS. First, in FIG. 1 showing an assembled state of a wooden folded staircase according to the present invention,
1 is a frame unit, 2 is a lower straight staircase unit, 3 is a lower landing stage unit, 4 is an upper landing stage unit, 6 is a partition wall unit, and 7 is an upper straight staircase unit.

As shown in FIG. 2, the frame assembly unit 1 constitutes a partition frame, and is composed of upper and lower horizontal frame members 11, 11 and three vertical frame members 13, 13, 13 joined together. It is made of wood.

As shown in FIG. 3, the lower straight staircase unit 2 includes nine step plates 23, 23, which form the first to ninth steps between the left and right sasara girders 21, 21 forming side plates. 23, 2
3, 23, ..., 23 and riser plates 25, 25 between them,
25, 25, 25, ..., 25 are joined and integrated,
It is a wooden product in which a wall adjusting material 27 is integrally joined to the outer surface of the sasara girder 21. And the upper end 2 of the sasara girder 21
2 is higher than the ninth step plate 23 and projects rearward. The riser plate 26 (see FIG. 1) below the first stage plate 23 and the riser plate 28 on the ninth stage plate 23 are attached later.

As shown in FIG. 4 and FIG. 9, the lower landing unit 3 is made of wood, which is formed by joining and integrating a flat plate 35 of the tenth stage on a frame 31. Here, the framework 31
Is the four joists 3 between the pair of joist receiving members 32, 32.
4,34,34,34 are erected and joined together.
Then, the nose plate receiving material 37 is joined and integrated to the front surface of the joist receiving material 32 on the front side, and the nose plate 39 flush with the flat plate 35 is joined and integrated on the joist receiving material 37.

The upper landing unit 4 is shown in FIGS.
As shown in FIG. 0, it is a wooden product in which a flat plate 45 in the 11th step is joined and integrated on a shaft 41. here,
The shaft set 41 is constructed by joining and integrally joining four joists 44, 44, 44, 44 between a pair of left and right joist receiving members 42, 42. Then, the front side of the joist 44 on the front side is joined and integrated with the stair side plate receiving field edge 47. In addition, joist receiving material 4 on the left side
A nosing member 5 is attached to the outer surface of 2 during assembly work at the site.

As shown in FIG. 6, the step nose member 5 is made of wood, in which a nose plate 55 corresponding to the tenth step is joined and integrated on a riser plate receiving member 51. In the riser plate receiving member 51, the upper and lower plate members 52, 52 are joined and integrated by the left and right plate members 53, 53 and the central plate member 54. This riser board receiving material 5
The riser board 57 is retrofitted to the No. 1.

The partition wall unit 6, as shown in FIG.
The half-split material 62 is joined and integrated along the rear end surface of the wall panel 61, while the lower waist wall panel 65 and the handrail wall panel 67 are joined and integrated to the front end surface of the wall panel 61 via the half-split material 63. It is made of wood. A lintel 69 is attached to the upper end 64 of the front half member 63.

As shown in FIGS. 8 and 14 and 15, the upper straight staircase unit 7 includes right and left sasara girders 7 forming side plates.
1, 71, three step plates 73, 73, 74 from the 12th step to the 14th step of the final step, and a riser plate 75 under the 12th and 13th step plates 73, 73. , 75 and the step plate receiving material 76 under the uppermost step plate 74 are integrally joined, and the wall adjusting material 77 is integrally joined to the outer surface of the sasara girder 71. The riser plate 79 below the uppermost step plate 74 is attached later.

As shown in FIGS. 1 and 16, the indoor components for installing the above units are, as shown in FIG. 1 and FIG. 16, a floor panel 111 for fixing the lower end of the stairs and a floor panel 112 on the right side of the floor panel 112. , Other floor panels 113, 11
4, 116 ..., Left side wall panels 121, 121, 12
1, small wall panels 122, 122 at the back and a waist wall panel 123, a right side wall panel 124, another wall panel 125,
126 and the like. 131 is earth concrete, 132 is a base, 133 is a space under the stairs, 1
34 is the entrance / exit, 135 is a window, 136, 137, 13
8 is a half-divided material, and 139 is a half base.

As for the second floor, which is the upper floor, as shown in FIGS. 7 and 14, the floor panel 211 on the front side to which the uppermost stairs are connected and the body differences 221 and 221 on the left and right sides thereof are connected.
22, 223, other floor panels 212, 213, 214,
216, 217 ..., Other body difference 224, 225, 226,
227 ... And the wall panels 232, 233 ... 241, 242 are handrails.

In the above, for example, the wall panel has a thickness of 90 mm, a width of 910 mm and a height of 2578 mm,
The center-to-center distance of the wall panels 61, 65, 67 of the partition wall unit 6 to the first floor wall panels 121, 122, 123, 124 of the three sides is 910 mm. Moreover, the body difference and the height of the second floor panel are 180 mm. And, the lower straight staircase unit 2, the lower side landing stage unit 3, the upper side landing stage unit 4, the upper side straight staircase unit 7 , the frame unit 1, and the partition wall unit which constitute the wooden folded staircase according to the present invention.
The cot 6 is designed in advance so that it can be accommodated in the staircase by the above-mentioned indoor components.

Next, the procedure for assembling the wooden folded staircase according to the present invention will be described. Prior to the assembly work, necessary markings such as a partition frame line, a partition wall line, a stairs bottom line, and a landing bottom line are made. Moreover, the black position is confirmed by a jig fixed tree. First, in the first assembly process,
The frame unit 1 is set on the partition line, and the lower horizontal frame member 11 is attached to the first floor panel 112 and the semi-base 139.
While nailing to the joint part of the back wall panel 12 in the back
3 and the vertical frame member 13 at the joining portion of the half members 136 and 137.
Nail. In this way, the frame units 1 for supporting the lower surface of the lower landing unit 3 are connected next to each other later.
The upper landing unit and the lower landing unit being continued
First, fix it at the position below the connecting part with .

In the next second assembling step, the lower straight staircase unit 2 is set on the lower end line of the staircase, and the upper end 22 side of the sasara girder 21 on the right side of the lower staircase unit 2 is covered with the wall adjusting material 27 as shown in FIG. With nailing to the corners of the upper horizontal frame member 11 and the front vertical frame member 13 of the frame unit 1, the left and right Sasara girders 21,
The lower end of 21 is nailed to the first-floor floor panel 111, and the left sasara girder 21 is also nailed to the first-floor wall panels 121, 121, 121 with the adjusting material 27. In this way, after fixing the lower straight staircase unit 2 to the second, as shown in FIG. 16, between the lower ends of the sasara girders 21 and 21, nailing the riser board receiving edge 29 to the floor panel 111,
The kicking plate 26 that is attached later is nailed from the front.

In the next third assembling step, the lower landing unit 3 is set on the lower line of the landing, and the right joists 34 of the frame 31 are attached to the frame unit 1 as shown in FIGS. 11 and 12. While being placed on the upper horizontal frame member 11, the front side joist receiving member 32 is placed on the upper ends 22 and 22 of the sasara girders 21 and 21 of the lower straight staircase unit 2 as shown in FIG. 11. Then, the right joist 34 is nailed to the upper horizontal frame member 11, the front joist receiving material 32 is nailed to the upper ends 22 and 22 of the sasara girders, respectively, and the left joist 34 is nailed to the first floor wall panel 121. At the same time, the back side joist receiving material 32 is nailed to the first floor small wall panel 122. In this way, after fixing the lower landing unit 3 to the third position, as shown in FIG. 11, the trailing riser plate 28 is nailed to the nose plate support 37 under the nose plate 39 provided on the front side thereof. Keep it.

In the next fourth and fifth assembling steps, the nose member 5 is nailed and integrated with the left joist receiving member 42 of the upper landing unit 4, and the upper landing unit 4 is connected to the lower end line of the landing. set. Here, an acceptance tree (not shown) may be prepared to support the lower surface of the upper landing unit 4 such as the right side. Then, as shown in FIG. 12, the lower plate member 52 of the riser plate receiving member 51 of the nosing member 5 is nailed to the right joist 34 through the flat plate 35 of the lower landing unit 3 on which it rests, and the small wall panel at the back is nailed. The nosing member 5 and the back joist 44 of the upper landing unit 4 are nailed to 122, respectively, and the right joist receiving member 42 is attached to the first floor wall panel 12.
Nail to 4. In this way, after fixing the upper landing unit 4 and the nosing member 5 to the fourth and fifth positions, the kicking plate support member 51 under the nosing 55 of the nosing member 5 is provided with a retrofitting kicking plate 57 as shown in FIG. Nail it.

In the next sixth assembly step, the partition wall unit 6
Set on the partition wall line, and the wall panels 61, 65
The right side sill girder 21 of the lower straight staircase unit 2 is nailed to the half-split members 62 and 63 by the wall adjusting member 27, and the vertical frame member 13 of the frame unit 1 is also nailed. Then, the lower ends of the wall panels 61 and 65 are attached to the floor panel 11 of the first floor.
1, 112, the first floor floor panel 112 and the half base 139, respectively, are nailed, and a lintel 69 is nailed to the upper end 64 of the front half-divided material 63 and the upper end of the wall panel 61. , As shown in FIG.
Nail the second and second floor panels 211. Thus
The partition wall unit 6 is fixed to the sixth position.

In the next seventh assembling process, on the stair side plate receiving field edge 47 provided on the front side of the frame 41 of the upper landing unit 4,
As shown in FIG. 13, the lower ends of the sasara girders 71, 71 of the upper straight staircase unit 7 and the riser plate 75 therebetween are placed, and at the end surface of the core material 211a on the uppermost staircase connection side of the second floor panel 211 on the front side. As shown in FIG. 14, the upper plate side of the sasara girders 71, 71 of the upper straight staircase unit 7 and the step plate receiving member 76 therebetween are aligned with the upper step plate 74. And the riser plate 75 between the lower ends thereof, the landing unit frame 41
While nailing on the front side, the step plate receiving material 76 between the upper ends is nailed on the core material 211a of the second floor panel 211, and the sasara girder 71 on the left side is divided by the wall adjusting material 77 portion into the partition wall unit 6 The wall panel 61 of No. 1 is nailed, and the right-side sasa girder 71 is nailed to the first floor wall panel 124 with the wall adjusting material 77. Thus, the upper straight staircase unit 7 is finally fixed.

As described above, as shown in FIG. 1, the assembling of the wooden folded staircase according to the present invention is completed. After that, a gypsum board is attached to the wall surface, and further an appropriate interior finish is applied. The gypsum board is attached along the wall adjusting members 27, 27 on both sides of the lower type straight staircase unit 2 and the wall adjusting members 77, 77 on both sides of the upper type straight staircase unit 7, respectively.

By the way, in the embodiment, as shown in FIG.
Since the stepped plate receiving material 76 is directly attached to the core material 211a of the second floor panel 211, the barrel difference for attaching the stairs to the front surface of the second floor panel 211 can be eliminated and the cost can be reduced. Further, in the illustrated example, the entrance / exit 134 to the staircase article storage space 133 is provided on the inner wall surface, but in addition to this example, for example, the left case wall may be provided with the article opening.

As described above, the advantages obtained by the wooden folding staircase for indoor use according to the present invention, which is made into subunits, are listed below. First, each unit can be factory manufactured. Can be carried in small quantities. Quality can be supplied stably. Then, in the field, two people can safely perform the assembly work. No special marking is required. Correct and easy installation of each unit. No technical judgment required. Does not require measurement and processing. There is no garbage. It fits well. Quality is stable. Work time can be shortened.

Although the lower straight staircase unit has a large number of stages and the upper straight staircase unit has a small number of stages in the above embodiments, the present invention is not limited to this.
Conversely, the lower straight staircase unit may be a small number of stages and the upper straight staircase unit may be a large number of stages. Further, it is needless to say that the size and design of each unit are arbitrary, and other specific detailed structures can be appropriately changed.

[0037]

As described above, according to the wooden folded staircase according to the present invention, the lower straight staircase unit and the upper straight staircase unit having the right and left sasara girders and the lower staircase connected between them are provided. It consists of a side landing unit and an upper landing unit, a frame unit supporting the lower surface of the lower landing unit, and a partition wall unit for partitioning the lower and upper straight staircase units. Therefore, the minimum required considering the efficiency of transportation work
As a result, a limited number of sub-units can be achieved, good indoors can be obtained, and stable quality can be obtained. Sanawa
By converting the folding stairs into subunits,
The knit can be produced at the factory and the quality can be stably supplied. So
Then, in the field, the installation of each unit is correct.
It's easy and requires no technical judgment. Also, please measure
And processing is not required, no dust is generated, and work time can be shortened.
Can . In addition, the frame unit is the connecting part of both landing units.
Since it supports the minute, the strength as a folded staircase increases.

Installed in a place surrounded by walls on three sides
The wall of each unit
By continuing or fixing it, it becomes a folded staircase.
Strength is secured and there is no need to provide a handrail around it.
Yes.

Then, the tree according to claim 3 or claim 4.
According to the construction method of the folding back stairs, claim 1 or claim
The wooden folded stairs described in Item 2 are surrounded by walls on three sides.
It can be installed in a place well and can be installed well, and it is simple
7 steps (in the assembly process of the upper landing unit, nosing members
If you include the installation of 6
Therefore, the work period can be shortened.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing an assembled state of a wooden folded staircase according to the present invention.

FIG. 2 is a perspective view of a single unit showing a frame assembly unit according to an assembly order.

FIG. 3 is a perspective view showing a lower straight staircase unit together with a rearmost upper riser plate.

FIG. 4 is a single-part perspective view showing the lower landing unit.

FIG. 5 is a single-part perspective view showing the upper landing unit.

FIG. 6 is a perspective view showing a nosing member to be assembled beside the upper landing unit together with a rear riser plate.

FIG. 7 is an exploded perspective view showing the partition wall unit and the upper and lower floors together with the lintel and the body difference which are mounted in conjunction with the partition wall unit.

FIG. 8 is a single-part perspective view showing the upper straight staircase unit.

FIG. 9 is an enlarged view of the lower landing unit,
(A) is a plan view and (b) is a side view.

FIG. 10 is an enlarged view of the upper landing unit,
(A) is a plan view and (b) is a side view.

FIG. 11 is a vertical cross-sectional side view showing the details of the connection between the lower straight staircase unit and the lower landing stage unit in the assembled state.

FIG. 12 is a vertical sectional front view showing the details of the connection between the lower landing unit and the upper landing unit in the same assembled state.

FIG. 13 is a vertical sectional side view showing the details of the connection between the upper landing unit and the upper straight staircase unit in the same assembled state.

FIG. 14 is an exploded perspective view showing how to assemble the upper straight staircase unit.

FIG. 15 is an exploded perspective view showing how to attach the uppermost step plate to the left and right side plates forming the upper straight staircase unit.

FIG. 16 is an exploded perspective view showing indoor components for installing a wooden folded staircase according to the present invention together with a partition wall unit.

[Explanation of symbols]

 1 axis unit 11 horizontal frame member 13 vertical frame member 2 lower straight staircase unit 21 side plate (Sasara girder) 22 upper end 23 step plate 25, 26, 28 riser plate 27 wall adjusting material 3 lower landing unit 31 shaft unit 32 joist Receiving material 34 joist 35 Flat plate 37 Nasal board receiving material 39 Nose board 4 Upper landing unit 41 Shaft 42 Jouta receiving material 44 Jouda 45 Flat plate 47 Stair side board receiving field edge 5 Step nose member 51 Rising board receiving material 55 Nose board 57 Raising board 6 Partition wall unit 61 Wall panel 62,63 Half-divided material 65 Lower waist wall panel 67 Handrail wall panel 7 Upper straight staircase unit 71 Side plate (Sasara girder) 73,74 Step plate 75,79 Raised plate 76 Step plate receiving material 77 Wall adjustment Material 111,112 1st floor floor panel 121,122,124 1st floor wall panel 211 2nd floor panel

Claims (4)

(57) [Claims] 1. A wooden folded staircase which is composed of a lower wooden straight staircase portion, a landing portion, an upper straight staircase portion, a frame portion and a partition wall portion , and which is installed in a portion surrounded by wall surfaces on three sides , is connected to the lower end to the lower floor of the floor surface, it is connected to the left and right sasara made by assembling in parallel a plurality of stair treads between digits wooden lower straight stairway unit, the upper end on the floor of the upper floors, the left and right sasara A wooden upper straight staircase unit made up of a plurality of parallel plates assembled between girders, and a wooden upper landing land unit connected under the upper straight staircase unit and having a flat plate assembled on a shaft, A lower wooden landing unit, which is connected to the upper landing unit next to the lower unit and is connected to the lower straight staircase unit by connecting a flat plate on the lower frame; Below the unit and on the floor below A framing unit wood to be interposed between, with one side is connected to sasara digits before Symbol lower straight stairway unit, and the other side is connected to sasara digits of the upper straight stair units, it said be provided with a wooden partition wall unit which is interposed between the lower floor of the floor the upstairs floor of the lower straight staircase unit and the upper straight stair units
Each outer sasara girder is surrounded by a wall on the three sides.
A wooden folded staircase characterized by being connected to the wall on each side . 2. The frame units are connected next to each other.
The upper landing unit and the lower landing unit
Support the connecting part of the underside of the lower straight staircase unit.
At the same time, the two landing units are connected to contacting wall surfaces,
The wooden folded staircase according to claim 1, which is supported by a wall surface . 3. The wooden folded stairs according to claim 1,
It is a construction method to be installed in a place surrounded by wall surfaces, and the frame unit is fixed to the floor surface of the lower floor and the wall surface at the back.
A first assembling step and fixing the lower straight staircase unit to the frame assembly unit.
And the second floor that is fixed to the floor on the lower floor and the wall on one side.
Assembling process and the lower landing unit above the lower straight staircase unit
And a third assembling step of fixing it on the frame unit, and fixing a nose member hanging horizontally on the upper landing unit.
Then, attach this nosing member to the lower landing unit and the back.
Fourth and fifth assembly steps for fixing to a wall surface, and the partition wall unit to a side surface of the lower straight staircase unit.
6th assembler fixing to the floor surface of the lower floor
And the upper straight staircase unit in front of the upper landing unit.
It is fixed to the partition wall unit and also on the floor and the other side of the upper floor.
One of the features is that it consists of a seventh assembly process that is fixed to one wall.
The construction method of the wooden folded stairs to be collected. 4. The wooden folded stairs according to claim 2,
A construction method for installing in a place surrounded by a wall surface, wherein the frame unit is connected next to each other.
Connection part between the upper landing unit and the lower landing unit
A first assembling step of fixing to the floor surface of the lower floor and the inner wall surface so that the lower straight staircase unit is fixed to the frame unit, and is located below the floor surface of the lower floor. A second assembling step of fixing to one side wall surface; fixing the lower landing unit to above the lower straight staircase unit and above the frame unit; A third assembling step of fixing to the wall surface, and a laterally hanging nosing member is fixed to the upper landing unit, and the nosing member is fixed to the lower landing unit and the back wall surface, and the upper landing unit Fourth and fifth assembly steps for fixing the unit to the side surface on the other side and the wall surface at the back, and fixing the partition wall unit to the side surface of the lower straight staircase unit and to the floor surface of the lower floor. A sixth assembling step for fixing the upper straight staircase unit; And the upper landings unit and is fixed to said partition wall unit, the construction method of wooden folding stairs, characterized in that it consists of a seventh assembling step of fixing the wall surface of the floor of the upper floor and the other side.