JPH02272154A - Prefabricated type stair - Google Patents

Abstract

PURPOSE:To prevent the local rocking of landing and curved portions by a method in which both vertical couplers are provided with an upper end central fixing bolt and a downward horizontal seat plate and the set angle, height, and interval between the upper and lower stair units are made adjustable. CONSTITUTION:A stair unit 7 in which the horizontal base plate 1 is provided with vertical upward and downward couplers 2 and 3 and a long hole 4 and a nut 5 are fitted with each other in a non-rotatable way is provided. On the plate 1, upward and downward couplers 8 and 9 are vertically set and a fixing bolt 10 is projectionally set on the central part of the upper end of the coupler 8 provided with a horizontal seat plate 11 to obtain a stair unit 14 which is rotatably set. A unit 5 holding the plate 11 is fixed between the upper and lower nuts 12 and 13 screwed with the bolt 10. Stair units 16, top stair unit 17, and base stair unit 18 are fabricated to enable a spiral stair to be optionally fabricated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a prefabricated staircase for houses, stores, etc., which is constructed by connecting a plurality of upper and lower staircase units.

[Prior Art] In the conventional prefabricated staircase disclosed in Japanese Patent Publication No. 62-13460, a cylindrical downward joint body and a cylindrical downward joint body are vertically protruded from the base end and the distal end of a horizontal base plate. However, a stair unit with a fixing bolt vertically protruding from the center of the upper end of the H-facing joint body and a horizontal seat plate fixed inside the downward-facing joint body is used, and the upper and lower stair units are rotatably fitted to each other. The upward joint body and the downward joint body are tightened and fixed by sandwiching the horizontal seat plate between the upper nut body and the lower nut body screwed onto the fixing bolt.

[Problem to be solved by the invention]

However, in this prefabricated staircase, the fixing bolt is placed on the vertical center line of the upward joint body, so if the bolt becomes loose for some reason, the upward joint body and the downward joint body can rotate against each other. As a result, there is a risk that the assembled state of the lower stair unit may be distorted and the stairs may swing.

Therefore, an object of the present invention is that since the arrangement angle and height interval between the upper and lower stair units can be adjusted, it can be widely used in various buildings with different construction types, and spiral stairs and stairs with landings can be assembled as desired. In addition to being easy to construct, rotational behavior between stair units can be accurately suppressed after assembly.
To provide a prefabricated staircase that does not cause local swings in landings or curved parts as well as in the entire staircase.

[Means for Solving the Problems] As explained below using the reference numerals in the attached drawings, the prefabricated staircase of the present invention has an upward joint body 2 and a downward joint body 3 at the base end and the distal end of the horizontal base l. are vertically protruding, a vertical elongated hole 4 is provided in the upward joint body 2, and a nut part 5 is fixedly installed in the downward joint body 3, and the upper and lower joint bodies 2 of the upper and lower stages are fitted non-rotatably to each other and the downward A staircase unit 7 in which a joint body 3 is tightened and fixed by a bolt 6 screwed into a nut part 5 from a long hole 4; A fixing bolt 10 is vertically protruded from the center of the upper end of the upward joint body 8, and a horizontal seat plate 11 is fixed in the downward joint body 9, and the upper and lower stages are rotatably fitted to each other. The upward joint body 8 and the downward joint body 9 are fixed bolts lO
A stair unit 14 is fixedly tightened by sandwiching the horizontal seat plate 11 between the upper nut body 12 and the lower nut body 13 screwed together; The body 2 and the downward joint body 9 are vertically protruded, the upward joint body 2 is provided with a longitudinal long hole 4, the horizontal seat plate 11 is fixed in the downward joint body 9, and the upward joint body 2 is connected to the staircase. It is non-rotatably fitted to the downward joint body 3 of the unit 7, and is tightened (fixed) by a bolt 6 screwed into the nut portion 5 from the elongated hole 4, while the downward joint body 9 is connected to the upward joint body of the stair unit 14. A stair unit 1 rotatably fitted to a body 8 and fixed by clamping a horizontal seat plate 11 between a first nut body 12 and a lower nut body 13 screwed onto a fixing bolt lO.
5 and: An upward joint body 8 and a downward joint body 3 are vertically protruded from the base end and the distal end of the horizontal board 1, and a fixing bolt 10 is vertically protruded from the center of the upper end of the upward joint body 8 to form a downward joint. A nut part 5 is fixed to the body 3, and an upward joint body 8 is attached to the stair unit 1.
The horizontal seat plate 11 is sandwiched between the upper nut body 12 and the lower nut body 13, which are rotatably fitted to the downward joint body 9 of No. 4 and screwed to the fixing bolt 10, so that the tightening is fixed. A stair unit 16 in which the downward joint body 3 is non-rotatably fitted to the upward joint body 2 of the stair unit 7 and is fastened by a bolt 6 screwed into the nut part 5 from the elongated hole 4; downward joint body 3 at the tip of
is vertically protruding, and a nut part 5 is fixed to the downward joint body 3, and the downward joint body 3, which is non-rotatably fitted to the upward joint body 2 of the stair unit 7, is screwed into the nut part 5 from the elongated hole 4. The top staircase unit 17 has a horizontal board 1 fixed to the floor structure of the -L floor while being tightened by screws 6 inserted into the top; A vertical through hole 4 is provided in the joint body 2, and the F-oriented joint body 2, which is non-rotatably fitted to the downward joint body 3 of the stair unit 7, is tightened by a bolt 6 screwed into the nut portion 5 from the through hole 4. A pace staircase 2 knee 2 to which the horizontal board 1 is fixed to the floor structure of the lower floor; and a tread 19 which is fixed to the upper surface side of the horizontal board 1 of each stair unit. It is.

[Operation] The prefabricated staircase of the present invention can be assembled from the lower floor side to the upper floor side, or can be assembled from the upper floor side to the lower floor side, but for example, from the lower floor side When assembling, the horizontal board 1 of the pace staircase unit 18 is fastened to the floor structure 20 on the lower floor with screws 21, as shown in FIG.

As shown in FIG. 1, when a straight section continuous to the floor structure of the upper and lower floors is constructed using the stair unit 7, a curved section such as a landing midway is constructed using the stair unit 14, as shown in FIG. 2. The downward joint body 3 of the first step straight section stair unit 7 is fitted into the upward joint body 2 of the pace stair unit 18, and the downward joint body 2 and downward joint body 3 are fastened together with bolts 6. The attachment is fixed. The bolt 6
The turning operation tool is inserted through the upper openings of the upward joint body 2 and the downward joint body 3.

Next, as shown in FIG. 6, the downward joint body 3 of the second stage stair unit 7 is fitted into the upward joint body 2 of the first stage stair unit 7, and the upward joint body 2 and the downward joint body body 3
However, the bolt 6 is used to securely tighten the bolt 6. In this way, fit the downward joint body 3 of the -F side stair unit 7 into the upward joint body 2 of the lower stair unit 7, and tighten the upward joint body 2 and the downward joint body 3 with the bolts 6. By fixing them together, the straight parts on the lower floor side can be assembled in sequence.

Upward joint body 2 of the highest stair unit 7 of the straight section
As shown in FIG. 5, the downward joint body 3 of the staircase unit 16 for switching from a straight section to a curved section is fitted,
Tightening is secured by bolts 6. The stair unit 1
The downward joint body 9 of the curved part staircase unit 14 is fitted into the upward joint body 8 of 6, and the upper nut body 12 and the lower nut body 13 are tightened and fixed. As shown in FIG. 4, the downward joint body 9 of the upper stair unit 14 is fitted into the upward joint body 8 of the lower stair unit 14, and the upward joint body 8 and the downward joint body 9 are connected to the upper nut body 12. By tightening and fixing with the lower nut body 13, the curved portions are sequentially assembled.

As shown in FIG. 3, the downward joint body 9 of the stair unit 15 for switching from the curved part to the straight part is fitted into the upward joint body 8 of the uppermost stair unit 14 of the curved part. The lower nut body 12 and the lower nut body 13 are tightly tightened. The downward joint body 3 of the straight section stair unit 7 is fitted into the upward joint body 2 of the stair unit 15, and fastened with bolts 6. As shown in FIG. 6, the downward joint body 3 of the upper stair unit 7 is fitted into the upward joint body 2 of the lower stair unit and door, and the upward joint body 2 and the downward joint body 3 are connected with bolts 6. By tightening and fixing, the upper and lower straight parts are assembled in sequence.

As shown in FIG. 2, the downward joint body 3 of the top stair unit 17 is fitted into the upward joint body 2 of the top stair unit 2 door on the straight section on the upper floor side, and the upward joint body 2 The downward joint body 3 is tightened and fixed by the bolt 6. Finally, the mounting plate 22, which is fixed to the base end of the horizontal board 1 of the top staircase unit 17, is fastened and fixed to the upper floor structure 24 with screws 23.

- In the straight line part on the first floor side and the straight line part on the lower floor side,
Since the upward joint body 2 and the downward joint body 3 of the upper and lower stair units 7.7 are non-rotatably fitted to each other, the arrangement angle in the horizontal plane between the upper and lower stair units, the door, and 7 cannot be changed. Also between the pace stair unit 18 and the straight section stair unit 7, the upward joint body 2 and the downward joint body 3 are non-rotatably fitted to each other, so the arrangement angle of both cannot be changed. Also between the top stair unit 17 and the straight part stair unit 7, the downward joint body 3 and the upward joint body 2 are non-rotatably fitted to each other, so the arrangement angle of both cannot be changed.

Also between the straight section stair unit 7 and the switching stair unit 16, the upward joint body 2 and the downward joint body 3 are non-rotatably fitted to each other, so the arrangement angle of both cannot be changed. Switching stair unit 15 and straight section stair unit 7
Even between them, the upwardly facing joint body 2 and the downwardly facing joint body 3 are fitted together in a rotationally inconvenient manner, so that the arrangement angle of the two cannot be changed.

In the curved portion, the upward joint body 8 and the downward joint body 9 of the upper and lower stair units 14.4 are rotatably fitted to each other, so that the arrangement angle of the upper and lower stair units 14.4 is continuously changed in the horizontal plane. can do. Also between the switching stair unit 2 16 and the curved part stair unit 14, the upward joint body 8 and the downward joint body 9 are rotatably fitted to each other, so that the arrangement angle of both can be changed continuously. Since the upward joint body 8 and the downward joint body 9 are rotatably fitted to each other between the curved part stair unit 14 and the switching stair unit 15, the arrangement angle of both can be changed continuously.

Adjustment of the height interval between the pace stair unit 18 and the straight section stair unit 7 is performed using the play length between the vertical elongated hole 4 and the bolt 6. The height interval between the upper and lower stair units 7.7 in the straight section on the lower floor side can be adjusted step by step, every few steps, or by using the play length between the vertical long holes 4 and the bolts 6. It is only done in stages. Adjustment of the height interval between the straight part stair unit/1/7 and the switching stair unit 16 is performed using the play length between the vertical long hole 4 and the bolt 6 [7]. Adjustment of the height interval between the switching stair unit 16 and the curved part stair unit 14 is performed by moving the screwing position of the second nut body 12 and the lower nut body 13 with respect to the fixing bolt IO down one turn. .

Adjustment of the height interval between the upper and lower stair units 14.
By moving the screwing position of the body 13 to the fixed pole l-10 up and down, this can be done every step, every few steps, or only at a specific step. Adjustment of the height interval of the curved part stair unit 14 and the switching stair unit 15 ff, I] is as follows:
Fixing bolt 10 between upper nut body 12 and lower nut body 13
This is done by moving the screwing position up and down. +) Adjustment of the height interval between the JN stair knee knee 71-15 and the straight section stair unit 7 is performed using the length of play between the vertical long hole 4 and the bolt 61171.

Adjustment of the height spacing between the ten lower stair units 7.7 in the straight section on the upper floor side can be done step by step, every few steps, or in a specific manner by using the length of play between the vertical long holes 4 and the bolts 6. This is done only at the stage of Adjustment of the height interval between the straight part stair unit 17, the door, and the top stair unit 17 is performed using the length of play between the vertical long hole 4 and the bolt 6 Ill.

In this way, by appropriately combining the straight part stair unit 7, the curved part stair unit 14, the switching stair unit 15, and the switching stair unit 16, the top stair unit 17 is constructed.
By using it together with the pace stairs 21 and 18, a straight staircase with a landing, a curved staircase with a curved part in part, or a curved staircase in which the main part is sequentially curved can be constructed, and the horizontal board l of each staircase unit can be constructed. The footboard 19 is fixed.

[Example] In the staircase unit 15 for switching from a straight section to a curved section shown in FIGS. 7 to 10, the downward joint body 9 is composed of a metal cylindrical body, and is a square cylindrical body made by bending a metal plate material. The upward joint body 2 is configured such that the - side is vertically open. The elongated hole 4 of the upward joint body 2 is bored on three sides, and the ring-shaped horizontal seat plate 11 is welded to the inner surface of the intermediate portion of the downward joint body 9.

Stair unit 1 for curved sections shown in Figures 11 to 14
In No. 4, both the upward joint body 8 and the downward joint body 9 are made of metal cylinders, the fixing bolt 10 is welded to the one end cover plate 26 of the upward joint body 8, and the ring-shaped water seat plate 11
is welded to the inner surface of the intermediate portion of the downward joint body 9.

In the staircase unit 16 for switching from a curved section to a straight section shown in FIGS. 15 to 18, the upward joint body 8 is composed of a metal cylindrical body, and the fixing bolt 10 is connected to the upward joint body 8.
It is welded to the upper end cover plate 26 of. The downward joint body 3 is composed of a rectangular cylinder made by bending and pressurizing a metal plate, and has a nut part 5.
are welded to the outer surfaces on three sides, and the bolt 6 is screwed into the nut portion 5 through the through hole 27.

Straight section stair unit 7 shown in FIGS. 19 to 22
In this case, both the north-facing joint body 2 and the downward-facing joint body 3 are composed of rectangular cylinders made by bending metal plates, and the long holes 4 of the upward-facing joint body 2 are bored on three sides, and the nuts of the downward-facing joint body 3 are The part 5 is welded to the outer surface on three sides, and the bolt 6 is inserted into the through hole 27.
It is screwed into the nut part 5 from above.

In any stair unit, the upward joint bodies 2, 8
and the downward joint bodies 3 and 9 are attached to the horizontal board l along with a suitable reinforcing plate.
The skeletal structure is welded to the skeletal structure of the stairway unit, and this skeletal structure has a decorative cover made of plastic molded product25 to improve the appearance when installed inside a building.
are fitted. The cover unit 25 is fixed to the horizontal base plate 1 by tapping screws screwed into the through holes 30 in the outer peripheral edge of the horizontal base plate 1 before assembling the stairs.

If necessary, a washer with teeth on one side or teeth on both sides may be installed between the head of the bolt 6 and the upward joint body 2, between the upper nut body 12 and the horizontal seat plate 11, and between the lower nut body 13 and the horizontal seat plate 11. By inserting the attached washer 28 and biting the washer 28 into each contact surface by tightening the bolt 6 or the upper nut body 12, extremely strong fastening can be achieved.

The treadle 19 is fixed to the upper surface of the horizontal board 1 by screwing screws into screw holes 29 drilled in the outer edge of the horizontal board 1. In order to accurately set the treadle 19 in the horizontal position, A level adjustment plate can be inserted between the footboard 19 and the horizontal board l. The level adjustment plate has four screws screwed into a nut welded to the lower surface of the outer periphery.By increasing or decreasing the screwing depth of the screws, the level adjustment plate can be set to a horizontal state. The footboard 19 that contacts the top surface is also set horizontally. The upper nut body 12 and the lower nut body 13 are provided with a slot 31 for insertion of a bifurcated rotation operating tool and a vertical hole 32.

In another embodiment shown in FIGS. 23 to 35, a horizontal plate 33 is welded to the inner surface of the middle part of the upward joint body 8, and the fixing bolt 10 of the upward joint body 8 is welded to the central part of the horizontal plate 33. has been done. In addition, the horizontal seat plate 11 of the downward joint body 9
is constituted by the bottom plate portion of a pot-shaped cylindrical body 34, and the upper end flange portion 35 of the cylindrical body 34 is fixed to the horizontal substrate 1 with screws 36. The other configurations and operations are the same as those of the previous embodiment. Note that the cross-sectional shapes of the upward joint body 2.8 and the downward joint body 3.9 are not particularly limited to those shown.

[Effects of the Invention] As described above, in the prefabricated staircase of the present invention, the height interval between the straight part stair units 7 and 7, the height interval between the straight part stair unit 7 and the switching stair unit 15, The height interval between the switching stair unit 15 and the curved part stair unit 14, the height interval between the curved part stair units 14 and 14,
Curved section stair unit 14 and switching stair unit 7 16
The height interval between the switching stair unit 16 and the straight section stair unit 7 can be adjusted, and the switching stair unit 15 and the curved section stair unit 2 141!
The arrangement angle of the tl, the arrangement angle between the stair units 14 for curved sections 14, and the arrangement angle between the stairwork knee 2 for curved sections 14 and the switching stair unit 16 can be adjusted continuously, so the installation mode can be adjusted. Can be widely used in a variety of different buildings,
Spiral stairs and stairs with landings can be assembled and constructed as desired.

Additionally, a top staircase unit 9 +-17 fixed to the floor structure 24 on the upper floor, a pace staircase unit 18 fixed to the floor structure 20 on the lower floor, and a straight line non-rotatably connected to these. Department stair unit 7 and switching stair unit y) 1
5.16, and the rotation and movement of the stair unit 14 for curved sections is accurately restrained, so it is easy to construct an assembly type staircase that does not cause local swings in the landings or curved sections as well as the entire staircase. Can be provided.

[Brief explanation of drawings]

FIG. 1 is a schematic plan view showing an assembled state of a prefabricated staircase according to an embodiment of the present invention, and FIG. 2 is a schematic left side view of the staircase. Figure 3 is the dot-dashed line circle III in Figure 1.
Fig. 4 is a cross-sectional view taken along the line B-B of the curved part surrounded by the dashed line circle IV to - in Fig. 1; 5 is a cross-sectional view taken along the line C-C of the transition from one curved section to the other, surrounded by the dashed-dotted circle V in FIG. 1, and FIG. FIG. 3 is a sectional view taken along line DD of the enclosed straight portion. FIG. 7 is a plan view of the stair unit for switching from the straight part of the stairs to the curved part, FIG. 8 is a rear view of the stair unit, and FIG. 9 is a left side view of the stair unit. , FIG. 1O is a sectional view taken along line E-B in FIG. 7. 1st
FIG. 1 is a plan view of the stair unit for the curved part of the stairs, FIG. 12 is a rear view of the stair unit, FIG. 13 is a left side view of the stair unit 2, and FIG. is the first
FIG. 2 is a sectional view taken along line FF in FIG. 1; FIG. 15 is a plan view of the staircase unit for switching from the curved section to the straight section of the staircase, the 161st threshold is a rear view of the staircase unit, and FIG. 18 is a left side view of the unit, and FIG. 18 is a sectional view taken along line GG in FIG. 15. Figure 19 shows the staircase unit 2 for the straight part of the staircase.
FIG. 20 is a rear view of the stair unit, FIG. 21 is a left side view of the stair unit,
FIG. 22 is a sectional view taken along line H--H in FIG. 19. FIG. 23 is a schematic left side view of a prefabricated staircase in an assembled state according to another embodiment of the present invention, and FIG. 24 is a plan view of a stair unit for switching from a curved section to a straight section of the staircase. FIG. 25 is a rear view of the stairway unit, FIG. 26 is a left side view of the stairway unit, and FIG.
FIG. 7 is a sectional view taken along the line I-X in FIG. 24. FIG. 28 is a plan view of the stair unit for the curved part of the stairs, FIG. 29 is a rear view of the stair unit h, FIG. 30 is a left side view of the stair unit, and FIG. is J- in Figure 28
It is a sectional view taken along the J line. Figure 32 is a plan view of the switching unit from the straight line part to the curved part of the staircase;
The figure is a rear view of the stair unit, FIG. 34 is a left side view of the stair unit, and FIG. 35 is a threshold of 3211, taking into account the line break. l...Horizontal board, 2...G direction Jim-=F, body,
3... Bottom white joint body, 4... Long hole, 5... Nut part, 6... Bolt, 7... Stair unit for straight section,
8...-1-direction joint body, 9...downward joint body, l
O...Fixing bolt, 11...Horizontal seat plate, ■? ...
Upper nut body, 13...lower part 1 body, 14...
- Stair unit for curved section, 15... Stair unit for switching, 16... Stair unit for switching, 17... Stair unit for top, 18... Stair unit for pace, 1
9...Treadboard

Claims (1)

[Claims] An upward joint body 2 and a downward joint body 3 are provided vertically protruding from the base end and the distal end of the horizontal substrate 1, a longitudinal elongated hole 4 is provided in the upward joint body 2, and a nut portion 5 is provided in the downward joint body 3. A staircase unit 7 in which an upward joint body 2 and a downward joint body 3 of the upper and lower stages, which are fixedly installed and non-rotatably fitted to each other, are tightened and fixed by a bolt 6 screwed into a nut part 5 from an elongated hole 4; a horizontal board 1; An upward joint body 8 and a downward joint body 9 are provided vertically protruding from the base end and the distal end of the upward joint body 8, and a fixing bolt 10 is vertically provided at the center of the upper end of the upward joint body 8, and horizontally inside the downward joint body 9. A horizontal seat plate is provided between the upper and lower nut bodies 12 and 13 screwed into the fixing bolts 10, and the upper and lower joint bodies 8 and 9 of the upper and lower stages, which are rotatably fitted to each other, are fixedly installed. 11; an upward joint body 2 and a downward joint body 9 are vertically protruded from the base end and the distal end of the horizontal base plate 1; A long hole 4 is provided, a horizontal seat plate 11 is fixed in the downward joint body 9, and the upward joint body 2 is connected to the stair unit 7.
The downward joint body 9 is fitted in a non-rotatable manner to the downward joint body 3 of the stair unit 14, and is tightened and fixed by a bolt 6 screwed into the nut portion 5 from the elongated hole 4, while the downward joint body 9 is rotatable to the upward joint body 8 of the stair unit 14. and a stair unit 15 which is tightened and fixed by sandwiching the horizontal seat plate 11 between the upper nut body 12 and the lower nut body 13 screwed onto the fixing bolts 10; An upward joint body 8 and a downward joint body 3 are vertically protruded from the tip, a fixing bolt 10 is vertically protruded from the center of the upper end of the upward joint body 8, and a nut part 5 is fixed to the downward joint body 3. , the upward joint body 8 is rotatably fitted to the downward joint body 9 of the staircase unit 14, and the horizontal seat plate 11 is sandwiched between the upper nut body 12 and the lower nut body 13 screwed onto the fixing bolt 10; while the downward joint body 3 is unrotatably fitted to the upward joint body 2 of the stair unit 7,
A stair unit 16 is tightened and fixed by a bolt 6 screwed into a nut part 5 from an elongated hole 4; a downward joint body 3 is vertically protruded from the tip of a horizontal board 1, and a nut part 5 is attached to the downward joint body 3; The downward joint body 3, which is fixedly installed and non-rotatably fitted to the upward joint body 2 of the stair unit 7, is tightened and fixed by a bolt 6 screwed into the nut part 5 from the elongated hole 4, while the horizontal board 1 is A top staircase unit 17 fixed to the floor structure of the floor; an upward joint body 2 to the horizontal board 1;
is vertically protruding, a vertical through hole 4 is provided in the upward joint body 2, and the upward joint body 2, which is non-rotatably fitted to the downward joint body 3 of the stair unit 7, is inserted from the through hole 4 into the nut part 5. A pace stair unit 18 is tightened and fixed by screwed bolts 6, and the horizontal base plate 1 is fixed to the floor structure of the lower floor; and a tread plate 19 is fixed to the upper surface side of the horizontal base plate 1 of each stair unit. A prefabricated staircase.