JP2598315Y2 - Folding stair railing - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a folding stair railing.

[0002]

2. Description of the Related Art Generally, in order to form a safe work passage at the time of construction, not only a main handrail for finishing the stairs but also an internal staircase and an external staircase serving as an evacuation passage in an emergency.
It is mandatory to attach the temporary handrail.

Therefore, a temporary handrail conventionally constructed from a steel pipe or the like is temporarily fixed and fixed to a slab girder of a stair at a work site by a clamp fitting, etc., which is finally removed and disassembled in the construction work, and then replaced. It is customary to attach a permanent handrail for finishing to the above-mentioned slab girder by welding or using a fixture.

[0004]

However, this requires a temporary handrail frame at the work site, temporary fixing to the stairs and dismantling thereof, and furthermore, a permanent handrail must be attached. It becomes a heavy and complicated on-site work, and a large work cost is inevitable.

[0005] Even so, if it is assumed that the main handrail is attached to the stairs in advance, it will be bulky and heavy, so that it will be transported from the production factory to the construction site. In addition to the obvious disadvantages of unloading work at the site and other handling, the main handrail is easily damaged by repeated traffic during construction work, and subsequent troublesome repair finishing must be added. Results.

[0006]

SUMMARY OF THE INVENTION The present invention is intended to solve such a problem. For this purpose, as a folding stair railing, a lower end of a parallel column standing up at a constant height is used. The upper ends of the pillars are also pivotally connected to the bridges extending substantially parallel to the longitudinal direction of the girders, respectively, on the stairs girders, and receive the mid-height position of the struts.
Tighten the stopper to stop from the above-mentioned girder.
Out, and position the support upright by the stopper.
So that it can be held
It is characterized in that the operation is restricted so that the operation can be performed only in the upward direction .

[0007]

According to the above construction of the present invention, the handrail is provided as a general parallelogram link movement mechanism which is combined with the slab of the stairs in a state of pivotal connection to the slab. , Lay the railing column upstairs on the stairs
By performing the inversion operation, the transport from the production factory to the construction site, the unloading work at the construction site, and other handling can be performed conveniently under the flat folded state of the slab.

[0008] In addition, the posts from sasara digit of the stairs in the construction site, is received by the positioning stopper
By standing up, the entire handrail, including its coping, can be quickly and stably and firmly three-dimensionally constructed.
It can be used as both a temporary handrail and a permanent handrail as it is, eliminating the need for a temporary handrail frame at a construction site, temporary fixing to stairs, and dismantling of it as in the conventional construction site. Excellent in safety, construction quality, etc.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a first embodiment of the present invention; FIG.
(S) is a steel staircase of the building, which is composed of an assembly of a pair of left and right parallel-made metal slabs (11) and a treadboard (12) laid in a stair-like state between them.

In this case, in the first embodiment shown in FIGS. 1 to 3, each tread plate (12) is bent from a metal plate into an angle type, and is entirely welded to the right and left ends of the tread plate (11). As shown in the second embodiment of FIGS.
2) may be molded from a plastic material such as precast concrete or lightweight cellular concrete containing various reinforcing fibers, and may be assembled and integrated with the sasara girder (11) using a screw fastener (13) or other fixing tool. In short, the tread (1
2) With respect to its own configuration and means for assembling it with the sparser girder (11), those other than those shown in the drawings can be freely adopted.

(R) is a generic name of handrails, and is composed of a plurality of parallel standing uprights (14) and a bridge (15) straddling over the entire upper end thereof. All heights (h) of the sashes (15) are equalized to a certain size, so that the supported sash (15) is attached to the sasa spar (1).
It extends substantially parallel along the longitudinal direction of 1). That is, in the present invention, when the handrail (R) as a whole is viewed from the lateral direction, the handrail (R) is combined with the sasara girder (11) of the stairs (S),
It is framed by a parallelogram link movement mechanism as shown in FIGS.

Moreover, each of the columns (14) that frame such a handrail (R) has a stair (S) at its lower end.
Nosara girder (11)
5) are pivotally connected to each other so as to be freely rotatable.
As shown in FIGS. 3 and 8, a three-dimensional state of use standing up from the above-mentioned girders (11) and a flat folded state falling down toward the girders (11) as shown in FIGS. Has become.

In this regard, in the first embodiment shown in FIGS. 1 to 3, when the upper end of each of the columns (14) is pivotally connected to the kasagi (15), the upper end of the column (14) is engaged with the shaft receiving play. Hole (1
6) and a corresponding screw hole (1).
7) is drilled in the skirting (15), and a separate and independent pivot screw shaft (bolt) is inserted from the loose hole (16) to the screw hole (17).
By screwing and fastening (18), the support (14)
And the casket (15) can be bent around the horizontal axis of the pivot screw shaft (18).

On the other hand, when pivotally connecting the lower end of each of the columns (14) to the sasara (11) of the stairs (S),
Similarly, a separate and independent pivot screw (bolt) (19) is used to pass through a shaft receiving play hole (20) formed through the lower end of the column (14) through the outer surface of the sasara spar (11). The column (14) can be raised and lowered around the horizontal axis of the pivot screw shaft (19) by screwing and fastening the nut (21) welded and integrated into the nut. In addition, the nut (21) also functions as a distance color between the support (14) and the sash (11).

Therefore, by slightly loosening the pair of upper and lower pivot screw shafts (bolts) (18) and (19), the column (14) can be folded down in a flat folded state in which it overlaps with the slab (11). After the support (14) is erected from the folded state, the pivot screw shafts (bolts) (18) and (19) are tightened.
The handrail (R) including the support (14) can firmly hold the upright state of the support (14).
It is possible to make the frame three-dimensional into a stable parallelogram.

Further, the column (14) is turned down, and the pivot screw shafts (bolts) (18) and (19) are tightened up to thereby flatten the entire handrail (R) including its cap (15). It goes without saying that the folded state can be securely held without rattling.

At this time, as is apparent from FIGS. 1 and 3, the pitch (p) between the adjacent columns (14) is set to be larger than the height (h) of the columns (14) themselves. Is preferred. Then, even when the support (14) is turned down, adjacent ones of the support (14) do not interfere with each other, and substantially the entire handrail (R) including the kasagi (15) substantially corresponds to the sasara girder ( This is because, as a flat folded state that fits within the dimension range of the predetermined band width (w) in 11), the size can be made as small and compact as possible, so that it can be transported from the production factory to the construction site, or unloaded at the construction site. It is more and more advantageous in other handling.

Reference numeral (22) shown in FIGS. 1 to 3 is a fixing bolt for properly positioning and locking the upright state of the column (14), and (23) is a play hole for receiving the fixing bolt (22). The support (14) is formed so as to penetrate at an intermediate height position. Numeral (24) is a nut to be screwed and fastened to the fixing bolt (22). The nut is also arranged in parallel with the above-mentioned lower pivot screw shaft (19) receiving nut (21) so as to be in parallel therewith. It is integrated with the outer surface of 11) by welding.

The fixing nut (22) is attached to the nut (2) of the slab girder (11) from the middle position of the support (14).
By screwing and fastening to 4), the column (14) can be positioned and locked in an accurate standing state, and the state can be enhanced. Conversely, it is needless to say that the column (14) can be raised and lowered around the horizontal axis of the lower pivot screw shaft (19) by extracting the fixing bolt (22).

(25) Installation of the fixing bolt (22)
In addition to the above, the upright state of the column (14) is more firmly and stable.
From the outer side of the above-mentioned sasara spar (11)
It is a positioning stopper that protrudes integrally and supports
(14) The mid-height position is now correctly received
ing. Such a positioning stopper (25) is
Similar to nuts (21) and (24), metal plate sasara
(11) Can be welded integrally to the outer surface
You.

However, it is clear from the second embodiment shown in FIGS.
Thus, instead of installing the fixing bolt (22), a leaf spring is used.
A positioning stopper (25) bent from the material is attached and fixed to the outer surface of the spar beam (11) with a screw (26) or the like, and the column (14) is fixed by the stopper (25).
It is also possible to receive the mid-height position and lock it to its accurate and stable standing state .

As is apparent from the partial modification shown in FIG. 9 corresponding to FIG. 7, the stopper (25) bent from a metal plate piece is used.
a) is welded and integrated with the outer surface of the slab girder (11),
Thus, the fixing bolt (22a) as described above may be screwed and fastened to the middle position of the column (14) correctly received in the upright state. (24a) is a screw hole for receiving the fixing bolt (22a), and it goes without saying that it is formed at a mid-height position of the support (14).

In this case, in any of the positioning stoppers (25) and (25a), a clear communication is apparent from FIGS.
Thus, the mid-height position of the support (14) is stably received from the downstairs direction, and the support (14) is shown in FIGS.
Regulations As only be allowed overthrown facedown toward the upstairs direction as
It is controlled.

[0024] Therefore, in relation to the inclined slope of the stairs (S), the strut (14) can be a tilted small upstairs direction Hess quickly Fushimi of rotation angle, or vice versa a standing operating efficiency well done well, is as it can to lock in more and more stable, firm a standing state.

Next, FIGS. 10 to 14 relate to various partial modifications of the structure in which the upper end of each column (14) is pivotally connected to the kasagi (15). Instead of the separate and independent pivot screw shaft (bolt) (18) shown in FIG. 10, a pivot screw shaft (18a) as shown in FIG. The nut (17a) may be screwed to the pivot screw shaft (18a) after inserting the shaft receiving play hole (16a) on the 14) side.

Further, a middle part of the pivot screw shaft (18b) projecting integrally from the coping (15) is formed as a conical projection (27) as shown in FIG. The side mating hole (16b) is also formed corresponding to the conical shape, and the fastening force between the column (14) and the skirting (15) can be increased by taper fitting of both.

Contrary to FIG. 11, the pivot screw shaft (1) whose middle part is also formed as a conical projection (27c)
8c) is protruded inward from the upper end of the column (14) as shown in FIG. 12, and the conical receiving play hole (16c) is formed to penetrate the shade (15) side. May be determined to be similarly tapered. At this time, the nut (17c) screwed and fastened to the tip of the pivot screw shaft (18c) keeps the nut (17c) buried so as not to protrude from the surface of the shade (15).

Further, as is apparent from FIG.
5) A pair of left and right connecting stays (28) are extended downward integrally from each other, and separate and independent pivots are provided between the two connecting stays (28) and the upper end of the support (14) sandwiched thereby. A screw shaft (bolt) (18d) is passed through and a nut (17d) is attached to the tip of the screw shaft (18d).
May be screwed together.

Instead of extending the pair of left and right connecting stays (28), as shown in FIG.
And a pair of left and right connecting stays (28e) that are attached to the lower surface of the Kasagi (15),
Similarly, a pivot screw shaft (bolt) (18e) is pierced across the space between the upper end of the column (14) sandwiched by the nut and a nut (17e). I don't mind.

That is, the upper end of the column (14) and the
5), as illustrated in the first embodiment of FIGS. 1 to 3, not only its direct pivot connection, but also its indirect pivot connection via a separate receptacle (29). Such a configuration also belongs to the present invention.

FIGS. 15 and 16 show a partial modification of the structure in which the lower end of each column (14) is pivotally connected to the slab (11) of the stair (S). Instead of the separate pivot screw (bolt) (19) shown in the embodiment,
The pivot screw shaft (19a) as shown in FIG.
4) and integrally projecting inward from the lower end of the shaft receiving mating hole (2).
0a), and a nut (20a) may be screwed to the pivot screw shaft (19a).

Further, as shown in FIG. 16, a pivot screw shaft (19b) is integrally extended outwardly from the sasara spar (11), and an intermediate portion thereof is formed as a conical projection (30). The receiving mating hole (20b) also has a conical shape and is formed corresponding to the lower end of the column (14), and the two are taper-fitted to reduce the fastening force between the column (14) and the sasara spar (11). It can be increased.

The other configurations and operations of the various modifications shown in FIGS. 4 to 16 are substantially the same as those of the first embodiment shown in FIGS. Only the corresponding reference numeral is entered, and the detailed description is omitted.

The handling method of the present invention configured as described above will be described with reference to the first embodiment shown in FIGS.
The handrail (R) is attached to the sasara spar (11) of the stairs (S) in a pivotally connected state, and the pair of upper and lower pivotal support screw shafts (18) and (19) is slightly loosened to allow the support ( 14) was Fuku倒toward the upstairs direction of the stairs (S) as shown in FIG. 3, the coping (15) including whole quickly flattened folding handrail (R), also its the small compact folded state In addition, unloading work and other handling at the construction site, including transportation from the production plant to the construction site, can be conveniently performed.

[0035] Then, the above-mentioned posts (1 in construction site
4) received by its positioning stopper (25)
Until because, after having allowed to stand from sasara digit (11) as shown in Figure 1, the pair of upper and lower pivot screw shaft (18) (1
9) is tightened, and the fixing bolt (22) for the positioning lock in the upright state is screwed into the nut (24) on the side of the sparser (11), thereby stabilizing and securing the entire handrail (R). The handrail (R) can be used as it is for both the temporary handrail of the stairs (S) described above and the permanent handrail as it is.

[0036]

[Effect of the Invention] In summary, in the present invention, the lower end of the parallel support (14) standing up at a constant height (h) is used as a folding stair railing for the stairs (S). The upper end of the support (14) is also pivotally connected to the spar (15) extending substantially parallel to the longitudinal direction of the sasara (11). (1
4) Stopper (25) for receiving the mid-height position
(25a) is integrally stretched from the above-mentioned sasara girder (11).
Pull out and use the stoppers (25) and (25a) to support
(14) is determined so that it can be positioned and held upright
At the same time, the support (14) faces upward on the stairs (S).
Since the restriction is made so that the operation can be performed only once, there is an effect that the problem of the related art described at the beginning can be surely solved.

That is, according to the above configuration, since the handrail (R) of the stair (S) is attached to the slab (11) in a pivotally connected state, it overlaps with the slab (11). In a small flat folded state, transportation from the production factory to the construction site, unloading work at the construction site, and other handling can be performed lightly and efficiently. It is not necessary to temporarily fix and temporarily fix the temporary handrail, and then remove and disassemble the handrail to perform the complicated and heavy labor work for framing the permanent handrail for finishing. The handrail (R) of the present invention can be used as it is for both the temporary handrail and the permanent handrail.

Further, the handrail (R) of the present invention is formed into an overall parallelogram link movement mechanism, and its support (1) is provided.
At the lower end of 4), Sasara girder (11) of stairs (S)
To the Kasagi (15) at the upper end of the support (14)
Since the stairs (S) are constructed at the construction site because they are pivotally connected to each other, the handrail (R)
Is also installed by itself, and then the girder (1
From 1), the support (14) is moved to its positioning stopper (2).
5) If it stands up until it is received by (25a), the entire handrail (R) including its skirting (15) can be easily and correctly made into a three-dimensional frame, and its work efficiency, safety, and construction quality And so on.

In particular, the support pillar (1) is
4) Stopper (25) for receiving the mid-height position
Since (25a) is integrally extended, the strike
The strut (14) is automatically moved by the topper (25) (25a).
It is possible to stably maintain the positioning in an accurate standing state.
Can be done more easily, and
The strut (1) is also joined by the stopper (25) (25a)
4) Flipping operation only toward the upper floor of the stairs (S)
Is controlled so that it can
Can be performed quickly and efficiently under a small rotation angle,
Even if it is in the standing state, it can be locked more stably.
You.

In particular, if the structure of claim 2 is adopted,
Sasara girder of stairs (S) as a whole of handrail (R) (11)
Can be folded more and more flat,
Cost reduction in packaging and transportation can be achieved.

Further, if the configuration of claim 3 is adopted,
The receiver (29) pivotally connected to the upper end of the pillar (14)
It is possible to easily support the Kasagi (15)
The longer the workability of Kasagi (15) becomes,
In addition to being improved, various changes of Kasagi (15)
There is also an effect that the correspondence to it is expanded.

[Brief description of the drawings]

FIG. 1 is a side view showing a use state of a first embodiment according to the present invention.

FIG. 2 is an enlarged sectional view taken along line 2-2 of FIG.

FIG. 3 is a side view showing a folded state corresponding to FIG. 1;

FIG. 4 is a side view showing a use state of the second embodiment corresponding to FIG. 1;

FIG. 5 is a partially enlarged side view of FIG. 4;

FIG. 6 is a sectional view taken along line 6-6 in FIG. 5;

FIG. 7 is a sectional view taken along line 7-7 of FIG. 5;

FIG. 8 is a side view showing a folded state corresponding to FIG. 4;

FIG. 9 is a cross-sectional view showing a partially modified example corresponding to FIG.

FIG. 10 is an enlarged sectional view showing a first modified example of a pivotal connection structure between a column and a cap.

FIG. 11 is an enlarged cross-sectional view showing a second partial modified example.

FIG. 12 is an enlarged cross-sectional view showing a third partial modified example.

FIG. 13 is an enlarged sectional view showing a fourth modified example of the same.

FIG. 14 is an enlarged sectional view showing a fifth partial modified example.

FIG. 15 is an enlarged cross-sectional view showing a first modification of the pivotal connection structure between the column and the slab.

FIG. 16 is an enlarged cross-sectional view showing a second partial modified example.

[Explanation of symbols]

 (11) ・ Sasara girder (12) ・ Tread (14) ・ Prop (15) ・ Kasagi (17) ・ Screw hole (18) ・ Pivot screw shaft (19) ・ Pivot screw shaft (21) (24) ・Nut (22), Fixing bolt (25), Stopper (25a), Stopper (29), Holder (R), Handrail (S), Stairs (p), Pitch between front and rear (h), Height (W) ・ ・ Band width

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Ryoichi Hatano 2-2-2 Otemachi, Chiyoda-ku, Tokyo Urbannet Otemachi Building NTT Urban Development Co., Ltd. (56) References Akira Mikai 56-93435 (JP, U) Jiko 36-30178 (JP, Y2) (58) Fields investigated (Int. Cl. ⁶ , DB name) E04F 11/18 E04G 13/06 E04G 27/00

Claims (3)

(57) [Scope of request for utility model registration] The lower end of a parallel column (14) standing up at a constant height (h) is connected to a sasara spar (11) of a stair (S).
To the coping (15), which also extends the upper end of the support (14) almost parallel along the longitudinal direction of the sasara spar (11).
Stoppers that are pivotally connected to each other and receive the mid-height position of the column (14).
-(25) and (25a) are one
It protrudes physically and its stopper (25) (25a)
Allows the support (14) to be positioned and held upright.
And the support (14) is on the floor of the stairs (S).
A folding handrail for stairs, characterized in that it is restricted so that it can only be turned upside down. 2. The pitch between adjacent posts (14) in the longitudinal direction.
(P) is larger than the height (h) of the support (14) itself.
Sized so that the columns (14) adjacent to each other fall down
So that it does not interfere at
The folding handrail for stairs according to claim 1, characterized in that it is set so as to be flatter than the fixed band width (w) . 3. A support (14) is positioned on the Kasagi (15).
The receiving device (29) is integrated with the receiving device (2).
The folding handrail for stairs according to claim 1, characterized in that the handrail (9) and the upper end of the column (14) are rotatably pivotally connected .