JP2560840Y2 - Free handrail - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a free handrail used as a handrail of a framed scaffold or the like when a building is constructed.

[0002]

2. Description of the Related Art Generally, when a building such as a building is constructed, a framed scaffold 11 is constructed along the outer wall of the building, for example, as shown in FIG.

The framed scaffold 11 is composed of a horizontal frame 13 and a vertical frame 15, and a brace 17 is hung on the vertical frame 15 in order to prevent a worker from falling.
When there is a step between the scaffolds or when the spans of the scaffolds are not aligned, it becomes impossible to hang the predetermined braces 17, so the single pipe 19 is fixed to the vertical frame 15 by the clamp member 21, The construction of the handrail 23 is performed.

[0004]

However, in the method of constructing the handrail 23 by fixing the single tube 19 to the vertical frame 15 by the clamp member 21 as described above, the single tube 19 having a length corresponding to the span is selected. However, since it is necessary to fix the single pipe 19 to the vertical frame 15 with an appropriate clamp member 21,
There is a problem that a large number of work steps are required to construct the handrail 23.

The present invention has been made to solve such a conventional problem, and an object thereof is to provide a free handrail capable of quickly and reliably constructing a handrail.

[0006]

According to the present invention, a free handrail is provided at both ends of a long center support member so as to swingably support the center of the long handrail member, and at both ends of the handrail member. In addition, a length adjusting member is arranged so as to be extendable and contractable, and a fixed portion is swingably supported at the tip of the length adjusting member.

[0007]

With the free handrail of the present invention, the length of the handrail is adjusted by extending and contracting length adjusting members disposed at both ends of the handrail member.

In addition, the handrail member is swung with respect to the central support member to incline at a predetermined angle, and the fixed portion is swung with respect to the length adjusting member to incline at a predetermined angle, thereby constructing an inclined handrail. can do.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention; FIG. 1 shows an embodiment of a free handrail according to the present invention. Reference numeral 31 denotes a long central support member made of, for example, a metal pipe material.

[0010] Both ends of the central support member 31 are crushed, thereby forming a mounting portion 31a. The center of a long handrail member 33 made of, for example, a metal pipe is swingably supported by the mounting portion 31a.

That is, a bracket 35 projects from the center of the handrail member 33, and the bracket 35 and the mounting portion 3 are provided.
1a, the pin member 37 is inserted.
The diameter of both ends is increased to prevent falling off.

At both ends of the handrail member 33, for example, a long length adjusting member 39 made of a metal pipe material is arranged so as to be extendable and contractible. That is, as shown in FIG. 2, one end of the length adjusting member 39 is inserted into the handrail member 33.

A groove 39a is formed on the outer periphery of the length adjusting member 39 in the axial direction, and a bolt screwed into a screw hole formed at each end of the handrail member 33 is formed in the groove 39a. The tip of 41 is inserted.

The other end of the length adjusting member 39 is crushed to form a mounting portion 39a. The fixing portions 43 and 45 are swingably supported by the mounting portion 39a.

That is, a bracket 47 is protruded from the fixing portions 43 and 45, and the bracket 47 and the mounting portion 39 are provided.
The pin member 49 is inserted through “a”, and both ends of the pin member 49 are enlarged in diameter and are prevented from falling off.

A clamp member 51 is arranged on the upper fixed portion 43 so as to be openable and closable, and a semicircular locking portion 53 is formed on the lower fixed portion 45. I have.

The above-mentioned free handrail 55 is constructed as a handrail, for example, as shown in FIG. 3, where there is a step between the scaffolds in the framework scaffold 57 and where the scaffold spans do not match.

In this case, as shown in FIG. 4, the handrail member 33 is swung with respect to the center support member 31, and is inclined by a predetermined angle θ corresponding to the step. The fixing portions 43 and 45 are swung with respect to the length adjusting member 39 so that the fixing portions 43 and 45 are perpendicular to the vertical frame 15.

Further, by extending and contracting the length adjusting members 39 disposed at both ends of the handrail member 33, the fixing portions 43,
45 is locked to the vertical frame 15, after which the clamp member 5
By fastening 1 to the vertical frame 15, a handrail is constructed.

In the free handrail 55 constructed as described above, the center of the long handrail member 33 is swingably supported on both ends of the long center support member 31 and the handrail member is provided. 33, a length adjusting member 39 is arranged at both ends so as to be extendable and contractible.
45 is swingably supported, so even when there is a step or when the span is different, a single pipe with a length that matches the span is selected as in the past, and the single pipe is fitted with an appropriate clamp member. Since there is no need to fix to the vertical frame,
A handrail can be reliably constructed.

Further, with the free handrail 55, the handrail member 33 can be easily arranged in parallel with the step. Further, in this embodiment, since the clamp member 51 is disposed on the upper fixing portion 43, there is no need to use materials such as bolts and nuts which are easily dropped from the scaffold, and safety can be improved.

Further, since the free handrail 55 is used as a unit, the appearance can be improved.

[0023]

As described above, in the free handrail of the present invention, the center of the long handrail member is swingably supported on both ends of the long center support member, and both ends of the handrail member are supported. In addition, the length adjustment member is arranged to be extendable and retractable, and the fixed portion is swingably supported at the tip of the length adjustment member. Therefore, even when there is a step or when the span is different, it can be quickly and reliably performed. There is an advantage that a handrail can be constructed.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of a free handrail of the present invention.

FIG. 2 is a cross-sectional view showing details of a connecting portion between a handrail member and a length adjusting member in FIG. 1;

FIG. 3 is a front view showing a state in which the free handrail of FIG. 1 is arranged on a framework scaffold.

FIG. 4 is a perspective view showing details of a free handrail in the state of FIG. 3;

FIG. 5 is an explanatory view showing a conventional framework scaffold.

[Description of Signs] 31 Central support member 33 Handrail member 39 Length adjustment member 43, 45 Fixing portion

Claims (1)

(57) [Scope of request for utility model registration] 1. A center of a long handrail member is swingably supported at both ends of a long center support member, and a length adjusting member is extendably arranged at both ends of the handrail member. ,
A free handrail, wherein a fixed portion is swingably supported at a tip of a length adjusting member.