JP2022037561A - Connection metal fitting for handrail - Google Patents

Abstract

To provide a connection metal fitting for a handrail which can shorten a time required for being attached to neighboring leg portions of two handrails.SOLUTION: A connection metal fitting for a handrail attached to upper half portions of two leg portions 21b and 22b that are adjacent to each other, of two handrails comprises: first and second rectangular members 1 and 2 disposed so as to clamp the two leg portions 21b and 22b in a horizontal direction; two support members 3a and 3b which are attached to the first rectangular member 1 to be separated from each other so as to adjust an interval therebetween and which support the two leg portions 21b and 22b so as to keep an interval of the two leg portions 21b and 22b a prescribed interval from the first rectangular member 1 side; and a fastening mechanism 6A which has first and second screw members (7, 8) screwed with each other, which connects the first rectangular member 1 and the second rectangular member 2 through the two leg portions 21b and 22b, and which can fasten the first rectangular member 1 and the second rectangular member 2 so as to narrow an interval therebetween.SELECTED DRAWING: Figure 1

Description

The present invention relates to a handrail connecting metal fitting for connecting handrails that can be easily removed.

Patent Document 1 describes a handrail (handrail frame) installed in an inverted U shape on a scaffold such as a construction site. This handrail is attached by inserting and fixing the tips (lower ends) of the legs on both sides to the insertion tube of the fixing bracket attached to the scaffold.

Since the handrail attached to such a scaffold can be easily removed, it is often installed around the machine hatch, and in order to prevent the handrail from wobbling or the like, a connecting metal fitting for connecting the adjacent handrails is used.

FIG. 4A is a top view of a state when the conventional handrail connecting metal fitting is attached to the handrail, and FIG. 4B is a front view of the handrail connecting metal fitting.

This conventional handrail connecting metal fitting 30 includes two connecting members 31, 32, a bolt 33, and a nut 34. Each of the connecting members 31 and 32 includes connecting plates 31a and 32a and half-split pipes 31b and 32b fixed at both ends thereof, and holes 31c and 32c through which bolts 33 are inserted are provided in the central portions of the connecting plates 31a and 32a. It is provided. When using this connecting metal fitting 30, the upper half of the adjacent legs 21b and 22b of the two handrails 21 and 22 (see FIG. 2) are sandwiched between the half-split pipes 31b and 32b at both ends of the connecting members 31 and 32. By tightening the two connecting plates 31a and 32a with the pump, the bolt 33 and the nut 34, the two connecting plates 31a and 32a are attached to the legs 21b and 22b.

Utility Model Registration No. 3168635 Gazette

In the above-mentioned conventional configuration, when the connecting metal fitting 30 is attached, the lengths of the connecting plates 31a and 32a are adjusted (cut) according to the distance between the two handrails at the site, and then half-split pipes are connected to both ends of the connecting plates 31a and 32a. The 31b and 32b are fixed by welding to manufacture the connecting members 31 and 32, and then attached to the two legs 21b and 22b. Therefore, when the connecting metal fitting 30 is attached, it takes a long time to manufacture the connecting metal fitting 30, and it takes a long time to attach the connecting metal fitting 30.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a handrail connecting metal fitting that can shorten the time required for attaching two handrails to adjacent legs. ..

In order to achieve the above object, the handrail connecting metal fitting according to an embodiment of the present invention has a handrail portion and legs extending downward from both ends thereof, and the lower end portions of the leg portions are supported by a predetermined member. It is a handrail connecting metal fitting attached to the upper half of the two legs adjacent to each other of the two handrails arranged adjacent to each other at a distance from each other, and sandwiches the two legs from the horizontal direction. The first and second elongated members arranged in such a manner and the first elongated member are attached to the first elongated member so as to be spaced apart from each other in the longitudinal direction of the first elongated member so as to be adjustable in distance from each other. Two support members that support the two legs from the side of the first elongated member so as to maintain the spacing between the legs, and one of the first and second elongated members. It has first and second threaded members that are fixed to either and screwed together, passing between the two legs and between the first elongated member and the second elongated member. It is provided with a tightening mechanism that enables tightening of the first elongated member and the second elongated member so as to be connected and the interval between them is narrowed.

According to this configuration, the distance between the two support members can be easily adjusted according to the distance between the two legs to be attached, so that the time required for attaching the two handrails to the adjacent legs can be shortened. Can be done.

Further, the support member may be configured so that the angle of the first elongated member with respect to the leg portion can be adjusted in front view.

Further, the second elongated member may have protrusions protruding toward the first elongated member at both ends in the longitudinal direction.

Further, the first screw member of the tightening mechanism is projected onto the surface of the long member of any one of the first and second long members on the side of the other long member. The second threaded member of the tightening mechanism is screwed into the male threaded portion through which the other elongated member is inserted. It may be composed of nuts.

Further, the first screw member of the tightening mechanism is fixed to the surface of the long member of any one of the first and second long members on the side of the other long member. The second screw member of the tightening mechanism, which is composed of a nut, may be composed of a bolt which is screwed into the nut through an insertion hole provided in the other elongated member.

INDUSTRIAL APPLICABILITY The present invention has an effect that it is possible to provide a handrail connecting metal fitting having the configuration described above and capable of shortening the time required for attaching two handrails to adjacent legs.

FIG. 1 (A) is a view from above of a state when the handrail connecting metal fitting of the first configuration example in the present embodiment is attached to the handrail, and FIG. 1 (B) is a view of the handrail connecting metal fitting. It is a front view of. FIG. 2 is a perspective view showing an example of a state when the handrail connecting metal fitting of the first configuration example in the present embodiment is attached to the handrail. FIG. 3 (A) is a view from above of a state when the handrail connecting metal fitting of the second configuration example in the present embodiment is attached to the handrail, and FIG. 3 (B) is a view of the handrail connecting metal fitting. It is a front view of. FIG. 4A is a top view of a state when the conventional handrail connecting metal fitting is attached to the handrail, and FIG. 4B is a front view of the handrail connecting metal fitting.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In the following, the same or corresponding elements may be designated by the same reference numerals throughout all the drawings, and the overlapping description thereof may be omitted. Further, in order to make the drawings easier to understand, each component is schematically shown, and the shape, dimensional ratio, etc. may not be accurately displayed. Further, the present invention is not limited to the following embodiments.

(Embodiment)
FIG. 1 (A) is a view from above of a state when the handrail connecting metal fitting of the first configuration example in the present embodiment is attached to the handrail, and FIG. 1 (B) is a view of the handrail connecting metal fitting. It is a front view of. Further, FIG. 2 is a perspective view showing an example of a state when the handrail connecting metal fitting of the first configuration example is attached to the handrail.

The handrail connecting metal fitting 10A of the first configuration example is, for example, as shown in FIG. 2, the upper half portion of the leg portions 21b, 22b of the two handrails 21 and 22 arranged adjacent to each other at intervals. Attached to. The installation location of the two handrails 21 and 22 is not particularly limited, and examples thereof include scaffolding around a machine hatch and a construction site. Further, although the two handrails 21 and 22 are arranged in an L shape when viewed from above, the arrangement is not limited to this, and the two handrails may be arranged in a straight line, for example.

Each handrail 21 and 22 includes horizontally arranged handrail portions 21a and 22a, two cylindrical leg portions 21b and 22b extending downward from both ends thereof, and middle rails 21c and 22c. The handrail portions 21a and 22a and the two leg portions 21b and 22b are formed of, for example, an inverted U-shaped round pipe. Although not shown, the lower ends of the two legs 21b and 22b of each handrail 21 and 22 are supported by predetermined members. For example, it is supported by inserting and fixing the lower end portions of the legs 21b and 22b into the tubular portion (predetermined member) fixed in advance at a predetermined position. In order to prevent wobbling and the like of the two handrails 21 and 22 on which the lower end portions of the respective leg portions 21b and 22b are supported (fixed) in this way, the connecting metal fitting 10A is used.

As shown in FIGS. 1A and 1B, the connecting metal fittings 10A are arranged so as to sandwich the two adjacent legs 21b and 22b of the handrails 21 and 22 from the horizontal direction. The elongated members 1 and 2, the two support members 3a and 3b attached to the first elongated member 1 apart from each other in the longitudinal direction so as to be adjustable in distance from each other, and the male threaded portion 7 screwed to each other. It is provided with a tightening mechanism 6A having a tightening nut 8.

The first elongated member 1 has a main plate portion 1a provided with three elongated holes P1 to P3, and side plate portions 1b provided on both ends in the width direction of the main plate portion 1a. The two side plate portions 1b are provided to reinforce the strength, and the side plate portion 1b may be omitted as long as the thickness of the main plate portion 1a is increased to provide sufficient strength. The three elongated holes P1 to P3 are long holes in the longitudinal direction provided at intervals in the longitudinal direction of the first elongated member 1 (main plate portion 1a).

The support members 3a and 3b are members that support the legs 21b and 22b from the first long member 1 side so as to maintain the distance between the two adjacent legs 21b and 22b of the handrails 21 and 22 at predetermined intervals. It is formed in an arc shape when viewed from above so as to make surface contact with the side surfaces of the legs 21b and 22b. In this way, the support members 3a and 3b support the legs 21b and 22b on an arcuate surface when viewed from above, so that the two legs 21b and 22b are supported by the support members 21b and 22b. The movement in the alignment direction can be restricted, and the distance between the two legs 21b and 22b can be maintained at a predetermined distance.

A male threaded portion 4 is projected from the surface of each of the support members 3a and 3b on the surface opposite to the surface receiving the leg portions 21b and 22b by welding a shredded bolt. Each male threaded portion 4 provided on the support members 3a and 3b is supported by being inserted into the elongated holes P1 and P3 of the first elongated member 1 and screwed with each nut 5 and tightening each nut 5. The members 3a and 3b can be fixed to the first elongated member 1. Further, the spacing between the support members 3a and 3b can be adjusted by loosening the nut 5 and moving the position of the screw portion 4 along the elongated holes P1 and P3. Further, when the nut 5 is loosened, the support members 3a and 3b can be rotated around the male threaded portion 4. As a result, the support members 3a and 3b are configured so that the angle of the first elongated member 1 with respect to the legs 21b and 22b can be adjusted in the front view.

The second elongated member 2 has a main plate portion 2a and protrusions 2b protruding toward the first elongated member 1 at both ends of the main plate portion 2a in the longitudinal direction.

The tightening mechanism 6A has a male screw portion 7 fixed to the second elongated member 2 and a tightening nut 8 screwed thereto, and two leg portions supported by the two support members 3a and 3b. The first long member 1 and the second long member 2 are connected through between 21b and 22b, and the distance between them can be adjusted. That is, the tightening mechanism 6A rotates (for example, clockwise) in the tightening direction of the tightening nut 8 to narrow the distance between the first elongated member 1 and the second elongated member 2. To enable tightening of the long member 1 of 1 and the second long member 2, and to release the tightening by rotating the tightening nut 8 in the loosening direction (for example, counterclockwise rotation) to widen the interval. Can be done.

In this example, a shredded bolt is used for the male thread portion 7 and a wing nut is used for the tightening nut 8, but the present invention is not limited to this. The male threaded portion 7 is provided so as to project from the central portion in the longitudinal direction of the second elongated member 2 (main plate portion 2a) toward the first elongated member 1, and the tip end side portion of the male threaded portion 7 is the first. It is designed to be inserted into the elongated hole P2 of the elongated member 1 and screwed with the tightening nut 8. The method of fixing the male threaded portion 7 to the main plate portion 2a can be appropriately changed, but in this example, the female threaded portion 2f is formed on the main plate portion 2a, and the base end of the threaded portion 7 is formed on the female threaded portion 2f. The side portion is screwed to penetrate the main plate portion 2a, and the base end of the penetrating male thread portion 7 is welded to the main plate portion 2a (welded portion 9). Here, the male thread portion 7 is composed of a shredded bolt, but for example, it may be configured by a shaft portion of a hexagon bolt having a head. In this case, a hole for inserting the shaft portion (male screw portion 7) of the hexagon bolt is provided in the main plate portion 2a of the second elongated member 2, and the shaft portion of the hexagon bolt is inserted into this hole to insert the hexagon bolt. The head may be fixed by welding to the main plate portion 2a.

When attaching the connecting metal fitting 10A to the two adjacent handrails 21 and 22, the tightening nut 8 and the two nuts 5 may be loosened (the tightening nut 8 may be removed). The legs 21b and 22b of the handrails 21 and 22 are arranged on both sides of the male thread portion 7 between the elongated member 1 of 1 and the second elongated member 2, and the legs 21b and 22b are arranged. By aligning the support members 3a and 3b along the above and tightening the tightening nuts 8 and 5, the connecting metal fittings 10A can be attached to the legs 21b and 22b.

Therefore, since the distance between the support members 3a and 3b can be easily adjusted according to the distance between the legs 21b and 22b to be attached, the time required for attaching the two handrails 21 and 22 to the adjacent legs 21b and 22b. Can be shortened.

Further, the protrusion 2b provided on the second long member 2 comes into contact with the legs 21b and 22b when the second long member 2 rotates when the tightening nut 8 is tightened. It acts as a detent for the long member 2 of 2. Further, when the tightening nut 8 is loosened, for example, the protrusion 2b can be prevented from being caught by the middle rails 21c and 22c of the handrails 21 and 22, and the connecting metal fitting 10A can be prevented from falling.

Further, in the examples shown in FIGS. 1 (A) and 1 (B) and FIG. 2, the first elongated member 1 and the second elongated member 2 are both attached in a horizontal state. Not exclusively. The first long member 1 and the second long member 2 may be attached in an oblique state when viewed from the front, or the first long member 1 and the second long member 2 are in a twisted state. It may be attached (in a state where the center lines extending in the longitudinal direction of each other are in the twisted position).

For example, the first long member 1 and the second long member 2 may be attached in parallel and at an angle when viewed from the front, or the first long member 1 and the second long member 2 may be twisted. By attaching with, it is possible to reduce the portion protruding from the handrails 21 and 22 when viewed from above, and it is possible to prevent the operator from getting in the way.

FIG. 3 (A) is a view from above of a state when the handrail connecting metal fitting of the second configuration example in the present embodiment is attached to the handrail, and FIG. 3 (B) is a view of the handrail connecting metal fitting. It is a front view of.

In the handrail connecting metal fitting 10B of the second configuration example, the difference from the above-mentioned handrail connecting metal fitting 10A is that the support members 3a and 3b are changed to the support members 3A and 3B, and the tightening mechanism 6A is changed to the tightening mechanism 6B. The other configurations are the same as those of the above-mentioned handrail connecting metal fitting 10A. The same effect as that of the first configuration example can be obtained in the second configuration example.

The support members 3A and 3B have the legs 21b and 22b from the first long member 1 side so as to maintain the distance between the two adjacent legs 21b and 22b of the handrails 21 and 22 (FIG. 2) at predetermined intervals. It is a supporting member, and is formed in a V shape when viewed from above so as to be in contact with the side surfaces of the legs 21b and 22b in a plurality of vertical lines. As another example, the support members 3A and 3B may be formed in, for example, a U shape when viewed from above. In this way, each of the support members 3A and 3B supports each leg portion 21b and 22b on a V-shaped (or U-shaped or the like) surface when viewed from above, so that the leg portions 21b and 22b are supported. The movement of the two legs 21b and 22b in the alignment direction can be restricted, and the distance between the two legs 21b and 22b can be maintained at a predetermined distance.

The tightening mechanism 6B has a nut 11 fixed to the second elongated member 2 and a tightening bolt 12 screwed thereto, and the two leg portions 21b supported by the two support members 3A and 3B, The first long member 1 and the second long member 2 are connected to each other through the space between 22b, and the distance between the first long member 1 and the second long member 2 is adjustable. That is, the tightening mechanism 6B rotates (for example, clockwise) in the tightening direction of the tightening bolt 12 to narrow the distance between the first elongated member 1 and the second elongated member 2. To enable tightening of the long member 1 of 1 and the second long member 2, and to release the tightening by rotating the tightening bolt 12 in the loosening direction (for example, counterclockwise rotation) to widen the interval. Can be done.

In this example, a high nut is used for the nut 11 and a wing bolt is used for the tightening bolt 12, but the present invention is not limited to this. The nut 11 is fixed to the surface of the second elongated member 2 (main plate portion 2a) on the side of the first elongated member 1 in the central portion in the longitudinal direction by welding, for example, and the threaded portion of the tightening bolt 12. 12m is inserted into the elongated hole P2 of the first elongated member 1, and the tip end side portion of the male threaded portion 12m is screwed with the nut 11.

In the first configuration example, the support members 3a, 3b may be changed to the support members 3A, 3B, etc., and in the second configuration example, the support members 3A, 3B are changed to the support members 3a, 3b. It may be configured.

Further, in the first and second configuration examples, the surface of the two support members (3a, 3b / 3A, 3B) and the second elongated member 2 on the side in contact with at least one leg (21b, 22b). A non-slip paint may be applied to the surface, or a rubber material such as a rubber sheet may be attached to the surface.

Further, in the first and second configuration examples, the first elongated member 1 is provided with three elongated holes P1 to P3, but the present invention is not limited to this, and two support members (3a, 3b / 3A, 3B) are provided. ) It is only necessary to be able to adjust the interval. Further, as in the first and second configuration examples, each support member (3a, 3b / 3A, 3B) can adjust the angle of the first elongated member 1 with respect to the legs 21b, 22b in the front view. It is preferably configured. In other words, each support member (3a, 3b / 3A, 3B) has a horizontal axis (central axis of the male thread portion 4) that is perpendicular to the longitudinal direction of the first elongated member 1 and penetrates the support member. It is preferable that it is rotatably attached to the first elongated member 1 in the center.

Here, for example, any one of the three elongated holes P1 to P3 may be a round hole. For example, the long hole P2 in the middle may be a round hole. Further, the long hole at any one end (for example, P1) may be a round hole, and in this case, the other two long holes (for example, P2 and P3) may be made into one continuous long hole. Further, the three elongated holes P1 to P3 may be made into one continuous elongated hole.

Further, in the first configuration example, as the tightening mechanism 6A, the second long member 2 is projected onto the surface of the second long member 2 on the side of the first long member 1 in the central portion in the longitudinal direction, and is formed on the first long member 1. A male threaded portion (first threaded member) 7 through which the provided insertion hole (P2) is inserted, and a nut (second threaded member) screwed into the male threaded portion 7 from the outside of the first elongated member 1. Although the configuration is provided with 8, the male screw portion 7 and the nut 8 may be arranged in reverse. That is, as a modification of the tightening mechanism 6A, the insertion is provided in the second elongated member 2 so as to project from the surface of the first elongated member 1 on the side of the second elongated member 2 in the central portion in the longitudinal direction. A male threaded portion (first threaded member) through which a hole (round hole or slotted hole) is inserted, and a nut (second threaded member) screwed into the male threaded portion from the outside of the second elongated member 2. It may be configured with. In this case, the long hole P2 in the middle is not provided in the first long member 1. In the case of this modification as well, as in the case of the tightening mechanism 6A described above, the male threaded portion (first threaded member) may be configured by, for example, a shredded bolt or a shaft portion such as a hexagon bolt. You may try to do it.

Further, in the second configuration example, as the tightening mechanism 6B, a nut (first screw member) fixed to the surface of the second elongated member 2 on the side of the first elongated member 1 in the central portion in the longitudinal direction. 11 and a bolt (second screw member) 12 through which an insertion hole (P2) provided in the first elongated member 1 is inserted and screwed into the nut 11 are provided, but the nut 11 and The bolts 12 may be arranged in reverse. That is, as a modification of the tightening mechanism 6B, a nut (first screw member) fixed to the surface of the first long member 1 on the side of the second long member 2 in the central portion in the longitudinal direction, and a second screw member. A bolt (second screw member) for inserting an insertion hole (round hole or long hole) provided in the second long member 2 from the outside of the long member 2 and screwing it into the nut is provided. It may be configured. In this case, the long hole P2 in the middle is not provided in the first long member 1.

From the above description, many improvements and other embodiments of the present invention will be apparent to those skilled in the art. Therefore, the above description should be construed as an example only and is provided for the purpose of teaching those skilled in the art the best aspects of carrying out the present invention. The details of its structure and / or function can be substantially changed without departing from the spirit of the present invention.

The present invention is useful as a handrail connecting metal fitting or the like that can shorten the time required for attaching two handrails to adjacent legs.

1 First long member 2 Second long member 2b Protrusions 3a, 3b, 3A, 3B Support members 6A, 6B Tightening mechanism 7 Male thread 8 Nuts 10A, 10B Handrail connecting metal fittings 11 Nuts 12 Bolts 21, 22 Handrails 21a, 22a Handrails 21b, 22b Legs P1 to P3 Long holes

Claims (5)

It has a handrail portion and a leg portion extending downward from both ends thereof, and the lower end portion of each of the leg portions is supported by a predetermined member and is adjacent to each other at a distance from each other. A handrail connecting bracket attached to the upper half of the leg.
The first and second elongated members arranged so as to sandwich the two legs from the horizontal direction,
The two legs are attached to the first elongated member in an adjustable distance from each other in the longitudinal direction of the first elongated member so as to maintain the spacing between the two legs at a predetermined interval. Two support members that support the portion from the first elongated member side, and
One of which has a first and second threaded member fixed to one of the first and second elongated members and screwed together, and the first one passing between the two legs. A tightening mechanism that connects the long member and the second long member and enables tightening of the first long member and the second long member so that the space between them is narrowed. When,
A connecting bracket for handrails. The support member is configured to be able to adjust the angle of the first elongated member with respect to the leg portion in a front view.
The handrail connecting metal fitting according to claim 1. Both ends of the second elongated member in the longitudinal direction have protrusions protruding toward the first elongated member.
The handrail connecting metal fitting according to claim 1 or 2. The first screw member of the tightening mechanism is
An insertion hole provided in the other long member, which is projected from the surface of the other long member of any one of the first and second long members on the side of the other long member, is inserted. Consists of male threaded parts
The second screw member of the tightening mechanism is
It is composed of a nut screwed into the male thread portion through which the other long member is inserted.
The handrail connecting metal fitting according to any one of claims 1 to 3. The first screw member of the tightening mechanism is
It is composed of a nut fixed to the surface of the long member of any one of the first and second long members on the side of the other long member.
The second screw member of the tightening mechanism is
It is composed of a bolt that is screwed into the nut by inserting an insertion hole provided in the other long member.
The handrail connecting metal fitting according to any one of claims 1 to 3.

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