JP2003268970A - Coupling fitting of temporary element and coupling method of the temporary element - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To disclose a technique for obtaining a coupling metal fitting suitable for any receiving fitting by a little constitution change. <P>SOLUTION: The coupling metal fitting is provided with another temporary element for coupling the other temporary element of a handrail or the like on a temporary element of a support or the like previously projecting the receiving metal fitting with an insertion hole. The fitting is provided with a hook-like body provided with a pawl part engaged with the insertion hole and a wedge inserted tightly in the insertion hole by penetrating an upper face part of the body. Furthermore, a depth regulation part contactable with the receiving metal fitting is projected toward the pawl part on the rear face part opposed to the pawl part of the body. The depth regulation part is provided to recess a part of the rear face part. Thus, the coupling fitting can be temporarily fixed without looseness, in addition, rightward and leftward looseness is prevented after temporary fixing, and construction working of a temporary structure can be performed safely. In addition, the depth regulation part prevents deformation of the receiving fitting in driving a wedge. <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 technique for connecting temporary elements to each other when constructing a temporary structure such as a scaffold or a support structure.

[0002]

2. Description of the Related Art Conventionally, a support fitting having an insertion hole is provided on a support pillar, and a handrail or the like connected to the support pillar is provided with a wedge type fitting fitting capable of being connected to the support fitting. A technique for easily connecting temporary elements without using a pipe clamp or the like is known. In particular, the inventor of the present application previously invented a wedge-type coupling fitting provided with a claw portion for temporary fixing (Japanese Patent Application No. 2001-223298).
The joining work can be performed by a small number of people, and the handrail can be attached in advance.

That is, the structure is such that a metal plate is bent in a hook shape to form a downward claw portion that can be locked in an insertion hole of a metal fitting, and a through hole formed in an upper surface portion of the main body. The wedge that can be tightly inserted into the insertion hole via the is configured separately. Then, in order to connect a handrail or the like to the column using the connecting metal fitting, first the hook portion is hooked in the insertion hole of the metal fitting to be temporarily fixed, and then the wedge is driven into the insertion hole to make the main fixing. To do. As described above, according to the coupling fitting, one worker can perform temporary fixing by the claw portion and main fixing by the wedge, so that it is possible to reduce the number of personnel required for constructing the scaffolding and the like. Especially when the connection fitting is applied to the handrail,
It is possible to pre-install the handrails, such as temporary fixing with the claws from one floor below the installation floor, and then driving a wedge up to the installation floor. Is also secured.

[0004]

However, there are still problems to be solved in the above-mentioned connecting fittings by the inventor of the present application. The first reason is that there is no unified standard for the size, shape, etc. of the receiving metal fittings on the columns and the like. That is, at present, there are several manufacturers of temporary elements, and therefore, the shape and size of the metal fittings are slightly different for each manufacturer. In particular, there is a difference in the degree of protrusion of the bracket from the peripheral wall of the column. On the other hand, in order to make a fitting that can be applied to any of the receiving fittings, there is no choice but to increase the distance between the claw part and the back part facing it and deepen the rollers of the main body. With respect to the insertion portion having a small degree of protrusion, since the rib is large, when the pawl portion is temporarily fixed, a considerable amount of opening is caused between the back surface portion and the receiving metal fitting, which causes rattling. In order to avoid this inconvenience, it suffices to prepare several types of fittings with different sizes of the rim,
Since the metal plate, which is the molding material, has a thickness of 5 mm or more in order to secure the strength, it is disadvantageous in terms of cost to mold the metal plate so that the size of the roller is different among several kinds. Also, it takes time for the user to select one of the fittings from several types.

The second problem is that this type of pillar is used many times and the wedge is driven each time.
By repeatedly driving the wedge in this way, the insertion hole of the receiving fitting may be deformed. The deformed insertion hole is not preferable because the effect of the wedge is lost and the fitting fitting cannot be firmly fixed to the fitting.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to make a slight modification to the configuration.
It is an object of the invention to disclose a technique capable of obtaining a coupling fitting applicable to any of the receiving fittings.

[0007]

In order to achieve the above object, in the present invention, another temporary element such as a handrail is connected to a temporary element such as a support column having a receiving metal fitting with an insertion hole protruding in advance. A metal fitting provided on the separate temporary element for
A hook-shaped main body having a claw portion engageable with the insertion hole; and a wedge penetrating the upper surface of the main body to be tightly inserted in the insertion hole, and further has a claw portion of the main body. On the opposing back surface part, a means for projecting a pocket adjusting part that can come into contact with the receiving fitting toward the claw part was used.

Further, in this means, in claim 2,
For the edge adjusting part, a means of selectively arranging a part of the back surface part is used.

On the other hand, as a method of connecting the temporary elements, the third aspect is a method of connecting another temporary element such as a handrail to a temporary element such as a pillar formed by preliminarily projecting a receiving metal fitting with an insertion hole. And is provided on the temporary element having a hook-shaped main body having a claw portion engageable with the insertion hole, and a wedge penetrating the upper surface of the main body and capable of being tightly inserted into the insertion hole. On the back surface of the main body of the connecting metal fitting that faces the claw portion, a pocket adjusting portion that can come into contact with the receiving metal member is projected toward the claw portion, and after the claw portion is engaged with the insertion hole, the wedge is formed. Was used for tightly inserting into the insertion hole.

Further, in this connecting method, in the fourth aspect, means for arranging the pocket adjusting portion on the site by recessing a part of the back surface of the main body is used.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a perspective view of a connecting member 10 according to the present invention applied to a horizontal member 20 such as a handrail.
It is shown that 0 is connected to the column 30. In addition, the support bracket 30 is provided with receiving fittings 31 in advance at four locations (three locations shown in the figure) on the peripheral surface thereof, and the receiving fittings 31 are formed with insertion holes 32 penetrating vertically. Coupling fitting 10
Is fixed to one end of the horizontal member 20 by a bolt nut 21. In addition, in this embodiment, the horizontal member 20 is configured to be rotatable about the bolt shaft of the bolt nut 21 as a rotation shaft.

Next, the detailed structure of the fitting 10 will be described. The connecting fitting 10 is provided with a main body 11 to which the horizontal member 20 is attached and a wedge 12 that is tightly inserted into the insertion hole 32 as separate bodies.
The main body 11 is formed by bending an upper portion of a metal plate into a U-shape and forming a claw portion 13 which can be engaged with the insertion hole 32 at the tip thereof. That is, the upper portion of the main body 11 has a hook shape. Also, the main body 1
A through hole 15 of the wedge 12 is formed in the upper surface portion 14 of 1. A mounting portion 17 for the bolt nut 21 is provided on the rear surface 16 facing the claw portion 13 so as to project outward.

Further, a part of the back surface portion 16 is a claw portion 1.
3 toward the main body 11
It is used as the adjustment section at the corner. The recess 18 in this embodiment is horizontally long as shown in FIG.
That is, the recessed portion 18 adjusts the edge of the main body 11 by reducing the distance between the claw portion 13 and the back surface portion 16, and the main coupling fitting 10 is attached to the receiving fitting 31 so that the claw portion 13 adheres closely to the column 30. In the opened state, it comes into contact with the receiving fitting 31.

The main fitting 10 having the recess 18 formed therein.
According to the above, it is possible to prevent the coupling fitting 10 from rattling or wobbling in the temporarily fixed state in which the claw portion 13 is engaged with the insertion hole 32. That is, since the support column 30 is usually cylindrical, when the coupling fitting 10 is temporarily fixed by the claw portion 13, the claw portion 13 comes into contact with the support column 30 only at a point. Therefore, the temporarily fixed coupling metal fitting 10 is apt to rattle to the left and right, but the recessed portion 18 contacts the receiving metal fitting 31 to suppress the rattling of the coupling metal fitting 10 at the time of temporary fixing.

The following actions are also performed when the wedge 12 is driven. That is, if the wedge 12 is driven into the insertion hole 32,
As the degree of tightness increases, a force acts to expand the insertion hole 32. And repeatedly hit the wedge 12,
There is a case where the insertion hole 32 is deformed by being strongly driven, but since the recessed portion 18 suppresses the receiving metal fitting 31 from the rear surface, the deformation of the insertion hole 32 that loses the wedge effect should be prevented. You can

In the above-described embodiment, the concave portion 18 has a laterally long shape, but it may have a circular shape or another shape, and a plurality of concave portions may be provided. Further, when a plurality of recesses 18 are provided, for example, in the case of the lower constricting metal fitting 31 described here, a plurality of recesses 18 may be provided up and down so that the protrusion degree increases in order from the top.

Further, the recessed portion 18 can be provided at the factory when the coupling fitting 10 is molded, but it can also be provided on site. In other words, if the recessed portion 18 is provided after confirming how much the receiving fitting 31 of the support column 30 is projected on site, the above-described action can be reliably obtained. At this time, the method of molding the recess 18 is not particularly limited, but can be performed by a processing tool such as a punch. Further, in addition to recessing the back surface portion 16, a projection may be formed toward the claw portion 13. Therefore, for example, a small piece is adhered or welded to the foot side of the back surface portion 16, or wax is fleshed by an arc or the like. It is also possible to construct the pocket adjusting part by arranging the parts.

Next, the method for connecting the temporary elements according to the present invention will be described with reference to FIGS. The connecting metal fitting used has the above-mentioned structure, and the one provided with the concave portion 18 in advance is attached to the end of the temporary element. here,
Prior to mounting the handrail 50 on the pillar 30, the preceding mounting of the handrail 50 on one floor from the lower floor will be described. First, the handrail 50 in this case has a pine needle shape in which one end of the diagonal member 52 is rotatably joined to one end of the horizontal member 51,
The above-described coupling fitting 10 is attached to each end (three places). Here, at least the fitting 1 at the tip of the horizontal member 51
0 is rotatably attached by the above-mentioned bolt-nut structure. Then, with the diagonal member 52 folded, the joint portion between the horizontal member 51 and the diagonal member 52 faces downward, and the claw portion of the coupling member 10 at the tip of the horizontal member 51 is temporarily fixed to the receiving member 31 of the support column 30 ( (Figure 3). Next, the diagonal member 52 is supported to bring the horizontal member 51 into a horizontal state, and the joint fitting 10 relating to the joint is temporarily fixed. Subsequently, the joint fitting at the tip of the remaining diagonal member 52 is temporarily fixed (FIG. 4), and finally, the wedge 12 of each joint fitting 10 is driven into the insertion hole 32 of the fitting 31.

According to this method, not only the action peculiar to the connecting metal fitting 10 can be obtained, but also the handrail 50 already exists when climbing up to the upper floor at the time of driving the wedge 12, etc. It is possible to safely build a temporary structure while preventing materials and materials from falling.

In the above embodiment, the pillars and the handrails are exemplified as the temporary elements, but it goes without saying that the temporary elements to be applied are not limited to these.

By the way, in this type of wedge-type coupling fitting, the catch of the claw portion 13 with respect to the insertion hole 32 may become shallow. That is, if the claw portion 13 is lengthened, the catch can be deepened, but the load bearing strength of the claw portion 13 is correspondingly reduced, so it is difficult to say that it is generally preferable to form the claw portion 13 long. Therefore, a coupling fitting that can be reliably temporarily fixed even if the hooked portion 13 is shallowly caught will be described with reference to FIG.

The basic structure of the fitting shown in FIG.
There is no difference from the embodiment described above. That is, also in this coupling fitting, it is composed of a hook-shaped main body 11 whose upper part is bent in a U shape, and a wedge 12. However, in the case of this fitting
The edge adjusting portion such as the recess 18 is not an essential requirement. More specifically, the fitting is made up of the main body 11
Although the wedge 12 is inserted into the through hole 15 in the upper part, a retaining portion 19 such as a rivet is provided at the tip of the wedge 12 so that the wedge 12 does not come out of the through hole 15. Further, in this embodiment, the through hole 15 is cut out to a part of the upper surface of the main body rear surface portion 16 so that the wedge 12 can be held in a state of lying sideways.

According to the above-mentioned coupling fitting having the above structure,
As shown in FIG. 6, the wedge 12 is first laid down, and in this state, the claw portion 13 is inserted into the receiving hole 32 of the fitting 31.
And temporarily fix it (see (A) in the same figure). Next, when the temporary metal element attached with the fitting is attached to its own weight or / and the temporary element is pulled down by a worker at the time of its preceding attachment, when the fitting is moved downward by a certain amount or more, the wedge 12 The receiving metal fitting 31 abuts on the front lower surface 12a of the connecting metal fitting, and then the connecting metal fitting is rotated in the direction of the arrow shown in FIG. (Refer to the same figure (B)). Then, when the wedge 12 is rotated to a nearly upright state, the wedge 12 falls by being pierced into the insertion hole 32 by its own weight (see (C) in the same figure). After that, of course, the wedge 12 may be driven in for final fixing.

As described above, according to the coupling fitting described here, as the so-called auto-locking coupling fitting, the wedge 12 is free-falling when the pawl portion 13 is temporarily fixed, so that the insertion hole 32 is inserted.
Since it is plugged in, the temporary fixing strength becomes high, and the fitting does not accidentally come off. Therefore, the temporary structure can be constructed more safely.

[0025]

As described above, according to the present invention, the main body of the wedge-type coupling fitting is provided with the recessed portion for adjusting the edge thereof, so that the coupling fitting can be temporarily fixed without wobbling and can be temporarily fixed. Even after that, rattling to the left and right can be prevented, and the construction work of the temporary structure can be safely performed. Further, the recessed portion prevents deformation of the receiving fitting due to driving of the wedge.
And, there is a practical advantage that these effects can be obtained by a simple configuration change.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of the present invention.

FIG. 2 is a rear view of the coupling fitting according to the embodiment.

FIG. 3 is a first step explanatory diagram showing a method for constructing a temporary element using the same fitting.

FIG. 4 is an explanatory view of the second step

FIG. 5 is a side view showing an auto-lock type coupling fitting.

FIG. 6 is a process explanatory view showing a work procedure using the same fitting.

[Explanation of symbols]

10 coupling hardware 11 metal fittings 12 wedges 13 Claw 14 Main body top 15 through holes 16 Body back 17 Bolt nut mounting part 18 recess 19 retaining part 20 Horizontal material 30 props 31 bracket 32 insertion holes

Claims (4)

[Claims] 1. A metal fitting provided on a separate temporary element for connecting another temporary element such as a handrail to a temporary element such as a pillar formed by projecting a receiving metal fitting with an insertion hole in advance. A hook-shaped main body having a claw portion engageable with the insertion hole, and a wedge penetrating the upper surface of the main body and capable of being tightly inserted in the insertion hole, and further facing the claw portion of the main body. The fitting fitting for the temporary element, characterized in that the rear part has a pocket adjusting part projecting toward the claw part capable of contacting the receiving fitting. 2. The fitting for a temporary element according to claim 1, wherein the pocket adjusting portion is provided by recessing a part of the back surface portion. 3. A method for connecting another temporary element such as a handrail to a temporary element such as a pillar formed by projecting a receiving metal fitting with an insertion hole in advance, the pawl being engageable with the insertion hole. And a hook-shaped main body having a portion, and a rear surface of the main body facing the claw portion of the coupling fitting provided on the temporary element having the wedge penetrating the upper surface portion of the main body and capable of being tightly inserted into the insertion hole. A protrusion adjusting portion that is capable of abutting the receiving metal fitting toward the claw portion, the claw portion is engaged with the insertion hole, and then the wedge is tightly inserted into the insertion hole. How to combine the temporary elements. 4. The method for connecting a temporary element according to claim 3, wherein the pocket adjusting section is provided by denting a part of the back surface of the main body on site.