JP2003193650A - Staircase handrail mounting structure for open staircase unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an open staircase unit which has a wide stair width without being narrowed by staircase handrails, can use the entire area of each tread for users to climb up and down the staircase, is improved in usability and appearance, and enables even elderly persons to smoothly and safely climb up and down the staircase. <P>SOLUTION: When a staircase handrail 4 is attached to the open staircase unit 1 which has its stringers 3 for bearing the treads 2 exposed without being covered with wall panels, a lower portion of each newel post 5 of the staircase handrail 4 is arranged on the outside A of each stringer 3, and the newel post 5 is fixed to the open staircase unit 1 by means of a newel post bearing fixture 6. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for mounting a stair handrail to an open staircase unit, and more particularly, to a staircase handrail on an open staircase unit in which a side girder supporting a tread is exposed without being hidden by a wall panel. It is related to mounting technology.

[0002]

2. Description of the Related Art Conventionally, stairs of a building such as a house include a normal staircase in which side girders are hidden inside walls and the like, and an open staircase unit in which side girders supporting treads are exposed. The staircase handrail of a normal staircase is supported on the wall surface using brackets, while the staircase handrail of the open staircase unit is
It is supported by a vertical pillar and a handrail that are vertically installed on the tread.

[0003]

However, in the case where the main pillar and the handrail of the stair handrail are erected on the tread plate of the open staircase unit as in the conventional case, the entire stair handrail is the inner surface of the side girder. It becomes more prominent than the stairway rails of the open staircase unit because the main pillar and its fixed hardware are placed on the top surface of the tread, which makes the appearance unsightly. Since it is narrowed by the above, there is a problem that smooth and safe climbing and climbing is hindered especially for elderly people.

The present invention was invented in view of the above-mentioned problems of the conventional example, and its purpose is to make the stairs wide without being narrowed by the handrails of the stairs and to provide a step board. To provide an installation structure of stair handrails to an open staircase unit that can be used for climbing and descending as a whole, improving usability and improving aesthetics, and especially enabling elderly people to climb and descend smoothly Yes, the other purpose is that when the stairs handrail is loaded, it can be reliably received by the entire open staircase unit, which prevents the load on the staircase handrails from being concentrated on the side girders. An open staircase unit that does not need to increase the strength of the side girder and can further increase the safety of climbing and descending even though the lower part of the main pillar is fixed to the outer side of the side girder. It is to provide a mounting structure of the staircase handrail to the door.

[0005]

In order to solve the above problems, the present invention has an open staircase unit 1 in which a side girder 3 supporting a tread 2 is exposed without being hidden by a wall panel.
In the structure in which the stair handrail 4 is attached to, the lower part of the main pillar 5 of the stair handrail 4 is arranged on the outer surface side A of the side girder 3 and the main pillar 5 is fixed to the open stair unit 1 by using the main pillar support hardware 6. With this configuration, the main pillar 5 of the staircase handrail 4 is arranged on the outer surface side A of the side girder 3 of the open staircase unit 1 so that the staircase width D is changed by the staircase handrail 4. It will not be narrowed and it will be spacious, and since the main pillar 5 and the main pillar support metal 6 will not be located on the tread 2, the appearance will be improved and the whole tread 2 can be used for climbing and descending. become.

Further, the main pillar supporting metal member 6 is arranged on the inner surface side B of the side girder 3 and is fixed to the lower part of the main pillar 5, and the outer surface side A of the side girder 3. And a fastening member 6C that penetrates through the side girder 3 and fastens the inner sandwiched metal 6A and the outer sandwiched metal 6B to each other. Is preferred,
In this case, when a load is applied by leaning on the stair handrail 4,
Most of the load is transmitted to the main pillar 5-> the outer sandwiched metal 6B-> the fastening member 6C-> the inner sandwiched metal 6A-> the tread 2, and is reliably received by the tread 2 having high strength, and as a result, the open staircase unit 1 as a whole. It will be accepted. As a result, it is possible to prevent the load applied to the stair handrails 4 from being dispersed and concentrated on the side girders 3.
Although the lower portion of the staircase is fixed, the load bearing capacity of the staircase handrail 4 can be improved without increasing the strength of the side girder 3.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below based on the embodiments shown in the accompanying drawings.

FIG. 1 shows a main pillar 5 for an open staircase unit 1.
2 and 3 are a plan view and a side view for explaining how the main pillars 5 and the handrails 8 of the staircase handrail 4 are housed, and FIG. 4 is an open staircase unit 1 with staircase handrails 4 respectively. FIG. 5 is a perspective view of a state in which is attached, FIG. 5 is an explanatory view of a state in which the main pillar support hardware 6 on the first floor side and the main pillar 5 are attached, and FIG. 6 is a master pole support hardware 6 and a main pillar on the landing side. 5 is an explanatory view of a mounting state of No. 5, FIG. 7 is a partition panel 9,
It is an explanation of the attachment state of 10.

The staircase of this embodiment has a landing 7 at an intermediate height level between the floor and the ceiling, and the landing 7 is a bent staircase. Below the landing 7, an open staircase unit 1 having side girders 3 supporting the treads 2 is installed, and above the landing 7, a normal staircase (not shown) in which the left and right side girders are hidden by wall panels. ) Is installed.

As shown in FIGS. 1 and 2, the open staircase unit 1 includes a plurality of upper and lower step plates 2 and a riser plate 24, and left and right side girders (power girders) 3 for supporting them.
One of the side girders 3 a is hidden by the wall panel 11 (FIG. 2), and the other side girder 3 is exposed by the wall panel 11 without being hidden. The lower space 25 of the open staircase unit 1 and the lower space 26 of the landing 7 continuous to the open staircase unit 1 have partition surfaces 9, whose surfaces are cross-finished, respectively.
It is designed to be blindfolded at 10 (Fig. 7).

The stair handrail 4 attached to the open staircase unit 1 is an inclined handrail body 4a shown in FIG.
And a pair of vertically extending parent pillars 5 standing on the first floor side and the landing 7 side, respectively, and a plurality of handrails arranged between the parent pillars 5 and 5 and extending vertically in the same length. It is composed of a child 8. The lower part of the main pillar 5 is arranged on the outer surface side A (FIG. 1) of the side girder 3, and each main pillar 5 is fixed to the tread 2 side of the open staircase unit 1 by using the main pillar support metal 6. . It should be noted that the plurality of handrails 8 are erected on a staircase deck 12 placed on the upper surface of a staircase-side partition panel 9, which will be described later.

The main pillar supporting metal member 6 is shown in FIGS.
As shown in (d), the inner sandwiching hardware 6A arranged on the inner surface side B of the side girder 3 and fixed to the back surface 2a of the tread 2 and the parent pillar 5 arranged on the outer surface side A of the side girder 3. An outer sandwich metal 6B fixed to the back surface and an inner sandwich metal 6A penetrating the side girder 3.
And a fastening member 6C such as a bolt 18 and a nut 19 for fastening the outer clamping piece 6B to each other. In this example, the inner sandwiching metal 6A is integrally formed with a contact piece 14 that contacts the inner surface of the side girder 3 and a tread plate fixing piece 16 that is fixed to the back surface 2a of the tread plate 2 with a screw or the like. Further, the outer sandwiching hardware 6B includes the contact piece 15 that contacts the outer surface of the side girder 3 and the main pillar 5.
A main pillar fixing piece 17 fixed with a screw or the like is integrally formed on the back surface of the lower end of the. Further, the side girder 3 is provided with a through hole 13 through which the bolt 18 freely penetrates. This through hole 13
Is formed larger than the diameter of the bolt 18, and the main pillar 5
The structure is such that when the load from is transmitted to the bolt 18, the load is not transmitted to the side girder 3. Figure 5 here
(A) and (b) show the mounting state of the master pillar support hardware 6 on the first floor side, and FIGS. 5 (c) and (d) show the master pillar 5 on the first floor floor and the master pillar support hardware on the first floor side. The state fixed to 6 is shown. 6 (a) and 6 (b) show the installation state of the main pillar support hardware 6 on the landing 7 side, and FIGS. 6 (c) and 6 (d) show the main pillar 5 on the landing 7 side and the main pillar support hardware on the landing 7 side. The state fixed to 6 is shown. Note that FIG. 5C and FIG. 6D and FIG.
A portion a indicated by a dot in (d) is a cutout portion on the side surface of the main pillar 5.

Next, the open staircase unit 1 having the above structure
Before attaching the stair handrail 4 to the side girder 3
The main pillar support hardware 6 is attached to each of the upper and lower ends of the first floor and the landing 7 side. Each of the main pillar support hardware 6 holds the side girder 3 from both inside and outside by the inner sandwiching metal 6A and the outer sandwiching metal 6B, and bolts 18 that loosely penetrate the through holes 13 provided in the side girder 3.
And the nut 19 are used to fasten the inner sandwich metal 6A and the outer sandwich metal 6B to each other. Further, the tread plate fixing piece 16 of the inner sandwiching metal 6A is fixed to the back surface 2a of the tread plate 2 with a screw or the like, and the rear surface of the parent pillar 5 is fixed to the master pillar fixing piece 17 of the outer sandwiching metal 6B with a screw or the like. Here, as an example of the construction procedure of the main pillars 5 and 5, first, the main pillar 5 on the first floor side is fixed to the main pillar support metal 6 on the first floor side (FIGS. 5C and 5D). State), and then, as shown in FIG. 7, the lower space 25 of the open staircase unit 1 is covered with the staircase side partition panel 9,
Next, a staircase heading 12 is attached to the upper surface of the staircase-side partition panel 9, and then the main pillar 5 on the landing 7 side is fixed to the main pillar support metal 6 on the landing 7 side (states of FIGS. 6C and 6D). ) After that, both ends of the handrail main body 4a are inserted into the upper ends of the main pillars 5 and 5 on the first floor side and the landing 7 side (state of FIG. 4). The lower space 26 of the landing 7 is covered with the landing side partition panel 10 shown in FIG. 7, and the opening 23 provided at the end of the landing side Kasaki 20 is fitted from above the main pillar 5 on the landing 7 side. The landing side Kasaki 20 is fitted on the upper surface of the landing side partition panel 10, and a handrail 21 and a horizontal handrail main body 22 are arranged on the landing side Kasaki 20 as shown in FIGS. 3 and 4. 27 in FIGS. 3 and 4 is a rosette.

However, by disposing the main pillar 5 of the stair handrail 4 on the outer surface side A of the side girder 3 of the open staircase unit 1 as shown in FIG. 1, the stair handrail 4 can be projected to the inside of the side girder 3. It disappears, and the main pillar 5 of the stair handrail 4 is replaced with the tread 2 as in the past.
Compared with the case where the stairs are fixed to the upper surface, the staircase width D (FIG. 2) is not narrowed by the staircase handrails 4 and becomes wider. Moreover, since the main pillar 5 and the main pillar supporting metal member 6 are not located on the tread plate 2 and the tread plate fixing piece 16 of the inner sandwich metal member 6A is screwed to the back surface 2a of the tread plate 2, the inner sandwich metal member 6A. Is not exposed on the upper surface of the tread plate 2, and the outer sandwiched metal piece 6B is fixed to the rear surface of the main pillar 5 with a screw or the like as shown in FIG. 5D, so that the outer sandwiched metal piece 6B is also hidden. As a result, the appearance of the open staircase unit 1 as a whole is improved and the entire tread 2 can be used for climbing and descending, so that even elderly people can climb and descend smoothly and safely.

When a load is applied by leaning against the stair handrail 4, the load is applied from the main pillar 5 to the main pillar supporting metal member 6.
Be transmitted to. At this time, the outer sandwich metal fitting 6B arranged on the outer surface side A of the side girder 3 and the inner sandwich metal fitting 6 arranged on the inner surface side B of the side girder 3.
A and A are fastened to each other by a fastening member 6C (bolts 18, nuts 19 and the like) penetrating the side girder 3, and a tread plate fixing piece 16 provided on the inner sandwich metal 6A is fixed to the back surface 2a of the tread plate 2. Therefore, most of the load from the main pillar 5 is transmitted to the outer sandwich metal 6B → fastening member 6C → inner sandwich metal 6A → the tread plate 2, and is reliably received by the tread plate 2 having high strength.
As a result, the entire open staircase unit 1 can be received. Moreover, since the bolt 18 used as the fastening member 6C is loosely inserted into the through hole 13 of the side girder 3, the load is not directly transmitted from the bolt 18 to the side girder 3. As a result, it is possible to prevent the load applied to the stair handrails 4 from being distributed over the entire open staircase unit 1 and being concentrated on the side girders 3. Therefore, the lower part of the main pillar 5 is fixed to the outer surface side A of the side girders 3. However, it is not necessary to increase the strength of the side girder 3. As a result, by arranging and fixing the lower part of the main pillar 5 on the outer surface side A of the side girder 3, the stair width D is not narrowed by the stair handrail 4 and combined with the effect that it can be used widely,
The open staircase unit 1 can be climbed and descended safely and smoothly, and the usability is improved.

Further, in this example, the staircase headstock 12 and the landing side headstock 20 are fitted on the upper surfaces of the partition panels 9 and 10 for blindfolds, respectively. Landing side Kasaki 20
It becomes easy to attach each of them, and the exposed side girders 3 can be protected from the outside by the partition panel 9. In addition, when attaching the staircase side partition panel 9, a projection 30 is projected on the outer sandwich metal 6B on the first floor side, and the projection 30 is inserted into a recess 31 provided on the front end surface of the staircase side partition panel 9. By locking, the outer side sandwich panel 6B on the floor side of the first floor is used to form the partition panel 9 on the staircase side.
Is easily supported. In addition, landing 7
A protrusion 32 is also provided on the outer side clamp 6B, and the protrusion 32 is inserted into a recess 33 provided in the upper corner of the front end face of the landing side partition panel 10 for covering the lower space 26 of the landing 7. Since it is locked, the landing-side partition panel 10 can be easily supported by utilizing the outer sandwich metal 6B on the landing 7 side, and as a result, the assembling work of the partition panels 9 and 10 becomes easy.

The structure for attaching the stair handrail 4 to the open staircase unit 1 of the present invention is widely applied to those having no partition panels 9 and 10.

[0018]

As described above, according to the first aspect of the invention, in the structure in which the stair handrail is attached to the open stair unit in which the side girders supporting the tread are exposed, the lower part of the main pillar of the stair handrail is located on the side. Since it is arranged on the outer surface side of the girder and this parent pillar is attached to the open stair unit by using the parent pillar support hardware, by the parent pillar of the stair handrail being arranged on the outer surface side of the side girder of the open stair unit, Compared to the case where the main pillar of the stair handrail is placed on the tread as in the past, the stair width is not narrowed by the stair handrail and it is more spacious, and the pillar and parent pillar support on the tread. Since the hardware is not located, the appearance is improved and the entire tread can be used for climbing and descending. As a result, elderly people can smoothly and safely climb and descend, which improves usability.

In addition to the effect of claim 1, the invention according to claim 2 is such that, in addition to the effect of claim 1, the parent pillar supporting metal member is arranged on the inner surface side of the side girder and fixed to the lower part of the parent pillar. And an outer sandwich metal piece arranged on the outer surface side of the side girder and fixed to the back surface of the tread, and a fastening member penetrating the side spar to fasten the inner sandwich metal piece and the outer sandwich metal piece to each other. Because
When a load is applied by leaning against the stair handrail, the load is transmitted from the main pillar to the side girder from the main pillar supporting metal. At this time, most of the load from the main pillar is transmitted to the outer sandwiched metal member → fastening member → inner sandwiched metal member → the tread plate, and can be reliably received by the tread plate having high strength. As a result, the load applied to the stair handrails can be prevented from concentrating on the side girders and distributed to the treads, so the strength of the side girders is increased even though the lower part of the main pillar is fixed to the outer surface side of the side girders. There is no need. As a result, by arranging and fixing the lower part of the main pillar on the outer surface side of the side girder, the stair width can be used extensively without being narrowed by the stair handrails, and the safety of the open stair unit It is possible to obtain the effect that the value can be further increased.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state in which a main pillar of a stair handrail is attached to an open staircase unit showing an example of an embodiment of the present invention.

FIG. 2 is a plan sectional view of the above.

FIG. 3 is a side view of the open staircase unit with the side girders omitted.

FIG. 4 is a perspective view showing a state where a stair handrail is attached to the above open staircase unit.

5 (a) and 5 (b) are a front view and a side view of a state in which a main pillar supporting metal member on the first floor is attached to a side girder of the same, (c).
(D) is the front view and side view in the state which fixed the parent pillar by the side of the 1st floor to the parent pillar support metal same as the above.

6 (a) and 6 (b) are a front view and a side view showing a state where a landing side pillar support metal is attached to a side girder of the same, (c).
(D) is the front view and side view in the state which fixed the master pillar by the side of the landing to the master pillar support hardware same as the above.

FIG. 7 is a perspective view illustrating a case where the lower space of the open staircase unit and the lower space of the landing are blindfolded by a partition panel.

[Explanation of symbols]

1 Open staircase unit 2 treads 2a back side 3 side girder 4 stairs handrail 5 main pillar 6 Parent pillar support hardware 6A Internal clamp 6B Outside clamp 6C fastening member A outer surface side B inner surface side

Claims (2)

[Claims] 1. In a structure in which a stair handrail is attached to an open stair unit in which a side girder supporting a tread is exposed without being hidden by a wall panel, a lower part of a main pillar of the stair handrail is arranged on an outer surface side of the side girder. Along with this, the main pillar is fixed to the open staircase unit by using the main pillar support hardware, and the stair handrail is attached to the open staircase unit. 2. The main pillar supporting metal member is arranged on the inner surface side of the side girder and is fixed to the lower part of the main pillar, and the outer pillar side supporting member is fixed to the back surface of the tread. 2. The open staircase unit according to claim 1, wherein the open staircase unit comprises an outer sandwiched metal article and a fastening member that penetrates the side girders and fastens the inner sandwiched hardware and the outer sandwiched metal article to each other. Stair handrail mounting structure.