JPH112013A - Stair handrail unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the assembling and improve the freedom of work execution by hinge connecting a shaft hole provided near the free end of a handrail part to the strut of an upper handrail unit so that an connecting angle can be regulated in this part. SOLUTION: A handrail unit 1 is formed of a strut 2 stood on a tread and a handrail part 3 extended obliquely upward from the upper end of the strut 2. A shaft hole 6 to be hinge connected to the strut 2 of the upper handrail unit 1 is provided near the free end to the handrail part 3. The connecting angle between them is regulated according to the connecting angle of each step of stairs in the part where the shaft hole 6 is hinge connected to the strut 2 of the upper handrail unit 1, and the upper and lower handrail units 1 are mutually connected. This work is repeated, whereby a series of handrails is finished. The work execution can be simplified, and the freedom of the work execution, particularly, in spiral stairs can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an assembling stair railing unit.

[0002]

2. Description of the Related Art As a known spiral staircase, there is a known spiral staircase in which a unit is assembled while adjusting a connection angle and a rising height of a tread of each step. In this staircase, as shown in FIG. 5, a main pillar 11 is erected at the center, and a required number of tread units 12 are attached to the main pillar 11. As shown in FIG. 6, the tread plate unit 12 has a structure in which a pipe portion 12b is provided on the base end side of a tread plate 12a, and the pipe portion 12b is rotatably fitted to the main column 11 so as to be rotatable.
The connection angle of each tread unit is adjusted by rotation about the main pillar 11 as a fulcrum. The rise height is adjusted by interposing a spacer ring between the upper and lower tread units. Thereafter, a handrail 13 is attached to the free end side of the spirally arranged tread plate 12a.
Attach the spiral staircase to complete.

[0003] The handrail of the spiral staircase is of a fixed type,
That is, the columns are erected at predetermined intervals, and handrails formed in accordance with the spiral shape of the stairs are fixed to the upper portions of the columns by welding or the like, and the handrails are covered with a front cover as necessary. There are many things.

[0004]

The spiral staircase of the prefabricated type as shown in FIG. 5 is designed so that the rise height and connection angle of each step can be freely changed, so that the degree of freedom of construction is high, It has the feature that it can be easily assembled without it.

[0005] However, the fixed handrail, which has been frequently used, has a structure which cannot easily cope with a change in the rising height of the tread and the connection angle. It is necessary to cope with a change in the rise height by changing the length of the support column, and it is necessary to form a handrail in accordance with the entire spiral shape of the stairs when changing the connection angle. Therefore, the features of the assembled spiral staircase using fixed handrails are not fully utilized. In addition, it takes considerable time for construction.

Accordingly, an object of the present invention is to provide an assembling type handrail unit which can cope with at least a change in the connection angle of each step and which can be easily constructed, thereby increasing the degree of freedom and efficiency of construction of stairs. .

[0007]

In order to solve the above-mentioned problems, in the present invention, a handrail unit is constituted as follows.

[0008] That is, there is provided a column standing vertically on a tread plate, and a handrail portion extending obliquely upward from the upper end of the column, and the column of the upper handrail unit is hinged near the free end of the handrail portion. A shaft hole is provided, and the connection angle is adjusted at the part where this shaft hole and the support of the upper handrail unit are hinged, and the upper and lower handrail units are connected, and this is repeated to complete a series of handrails did.

In this handrail unit, when the support is a support having a round cross section and the shaft hole is a round hole into which the support is loosely fitted,
More flexibility in enforcement.

[0010] It is further desirable that the handrail portion is constituted by a fixed portion integrated with the column and a movable portion slidably fitted to the fixed portion.

[0011]

The handrail unit of the present invention can be constructed easily by connecting the upper and lower handrail units and fixing them to the tread.
Also, since the upper and lower handrail units are hingedly connected, the connection angle between them can be freely changed in accordance with the connection angle of each step of the stairs.

In the case where the column of the upper handrail unit is passed directly through the shaft hole of the lower handrail unit, the main pillar can be slid up and down to absorb the deviation of the kick-up height of each stage.

[0013] In addition, the handrail provided with a movable portion,
The handrail can be expanded and contracted by the slide of the movable portion to absorb a shift in pitch between the adjacent columns, thereby expanding the range of use.

[0014]

FIG. 1 shows an embodiment of a handrail unit according to the present invention.

As shown in the figure, this handrail unit 1
It is composed of a vertical support 2 and a handrail 3 provided at the upper end of the support.

The column 2 comprises an upper pipe 2a, a lower pipe 2b which is added to a lower end of the upper pipe 2a, and a bolt 2c.

The bolt 2c is a full-head bolt without head (so-called cut bolt), and is screwed into a nut 2d buried in the lower part of the upper pipe 2a so that the screwing amount can be adjusted. Here, a nut 2e is also buried in the upper end of the upper pipe 2a.

The handrail portion 3 is formed by bending an elongated metal plate to form an inclined portion 3a having an inclination angle α substantially matching the gradient of the stairs, and horizontal portions 3b, 3c connected to both ends of the inclined portion.
Bolt 4 to be screwed into the nut 2e
The horizontal portion 3b is fixed to the upper end of the column 2 with the arrow. Shaft holes 5 and 6 are formed in the horizontal portions 3b and 3c of the handrail portion 3, respectively.

If the handrail portion 3 is detachable from the support column 2, only the handrail portion can be replaced with a handrail portion having a changed inclination angle α to cope with a change in the gradient of the stairs. Is not an essential requirement.

As shown in FIG. 2, the handrail unit 1 constructed as described above has a horizontal part 3c of the handrail part of the lower handrail unit and a horizontal part of the handrail part of the upper handrail unit on the support 2 of the upper handrail unit. The portions 3b are sequentially stacked, and the bolts 4 are passed through the shaft holes 5 and 6 of each horizontal portion, and the bolts 4 are screwed into the nuts 2e. At this time, since a hinge connection part with the bolt 4 as a fulcrum is formed between the upper and lower handrail units, before completely tightening the bolt 4 using the hinge connection part,
The connection angle (see θ in FIG. 3) of the upper and lower handrail units is adjusted.

As shown in FIG. 2, the column 2 is fixed to a step board 12a of the stairs. For fixing, the upper step board 12a is sandwiched between the upper pipe 2a and the lower pipe 2b of the support, and the next lower step board 12a is sandwiched between the lower pipe 2b and the cap nut 7 to be screwed to the bolt 4. Therefore, the free ends of the treads 12a of the respective steps are connected by the handrail unit 1 and reinforced.

FIG. 3 is a plan view when the handrail unit of FIG. 1 is employed in the spiral staircase of FIG. 5 (a plan view taken along the line III-III in FIG. 5). Of the spiral shape. In the drawing, S1 to S10 represent the order from the lower side of the steps.

In the handrail unit 1 shown in FIG. 1, it is necessary to cope with a change in the rise height by changing the length of the lower pipe 2b. However, if the structure shown in FIG. That defect is also eliminated.

In the handrail unit 8 shown in FIG. 4, the support 2 is formed of a single round pipe, and the shaft hole 6 is formed as a round hole. The support 2 of the upper handrail unit 8 can be slid in the shaft hole 6. It has a structure that can be inserted.

The column 2 is passed through an eye fitting 9 attached to the tread plate 12a, and a lower end thereof is supported by a receiving member 10 attached to the next lower tread plate 12a. (Not shown).

The handrail unit 8 can absorb the deviation of the kicking height by sliding the upper and lower handrail units relatively up and down.

The handrail unit 8 shown in FIG.
Is composed of a fixed portion 3d integral with the support column 2 and a bag-shaped tubular movable portion 3e which is slidably fitted to the fixed portion 3d, and the movable portion 3e is provided with a vertical shaft hole 6. By changing the length of the handrail portion 3 with the slide 3e, it is possible to absorb the fluctuation amount of the pitch between the columns.

[0028]

As described above, the handrail unit of the present invention can be easily constructed. In addition, since the connection angles between the units are variable, the degree of freedom in the construction of the spiral staircase is not impaired.

In addition, a structure in which the column of the upper handrail unit is slidably moved up and down through the shaft hole of the lower handrail unit can cope with a change in the rising height of the stairs.
In the case where the length of the handrail portion is made variable, the deviation of the pitch between the columns can be absorbed, and the degree of freedom of construction can be increased in both cases.

Although the handrail unit of the present invention is particularly suitable for a spiral staircase, the effect of simplification of assembly can be exhibited even when it is used for a straight staircase or the like.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a handrail unit of the present invention.

FIG. 2 is a side view showing an attached state of the handrail unit according to the first embodiment;

FIG. 3 is a plan view taken along line III-III of FIG. 5, showing a state in which the handrail unit of FIG. 1 is employed in the spiral staircase of FIG.

FIG. 4 is a perspective view showing another embodiment of a handrail unit.

FIG. 5 shows an example of a prefabricated spiral staircase.

6 is a perspective view of an example of a tread unit used for the spiral staircase of FIG. 5;

[Explanation of symbols]

 1, 8 handrail unit 2 support 2a upper pipe 2b lower pipe 2c bolt 2e, 2d nut 3 handrail section 3a inclined section 3b, 3c horizontal section 3d fixed section 3e movable section 4 bolt 5, 6 shaft hole 7 cap nut 9 eye fitting 10 Holder 12a Treadboard

Claims (3)

[Claims] 1. A strut vertically erected on a tread plate, and a handrail portion extending obliquely upward from an upper end of the strut, and a strut of an upper handrail unit is hinged near a free end of the handrail portion. A shaft hole is provided, the connection angle is adjusted at the part where the shaft hole and the support of the upper handrail unit are hinged, and the upper and lower handrail units are connected, and this is repeated to finish a series of handrails. Handrail unit for stairs. 2. The handrail unit for a staircase according to claim 1, wherein the pillar is a pillar having a round cross section, and the shaft hole is a round hole into which the pillar is loosely fitted. 3. The staircase according to claim 1, wherein the handrail portion is constituted by a fixed portion integral with the support and a movable portion slidably fitted to the fixed portion, and the shaft hole is provided in the movable portion. Handrail unit.