JPH0210173Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field of the invention] This invention relates to a support fitting for hanging rod members, and is a plate for a floor plate called F deck used when constructing a concrete floor plate in concrete building construction work. It is used to suspend hanging rods such as ceiling panels and various parts for electrical equipment, air conditioning, and disaster prevention, such as hanging bolts, which are installed and supported from below at any position after the floor plate is constructed. The present invention relates to a support fitting for a hanging rod member that can be used as a hanging rod member.

[Technical background of the invention and its problems] Conventionally, a floor plate called an F-deck, which is made by bending a rolled steel plate of a predetermined thickness and providing a row of triangular reinforcing parts, has been used. When constructing a concrete floor for concrete building construction, a plate for the floor is used to suspend hanging rod members such as ceiling panels and hanging bolts that suspend and support various parts for electrical equipment, air conditioning, and disaster prevention. After the floor plate is stretched, the insert tool is temporarily fixed in advance from above, concrete material is poured, and after construction, the insert tool is connected to the insert tool from below the floor plate by a predetermined means. However, according to this method, it is necessary to drill a mounting hole in the floor plate for fixing the insert, and it is also necessary to secure the insert in a way that can sufficiently withstand the impact and vibration of the concrete material being poured. Moreover, the work at the extremely crowded construction site was inefficient.

In order to improve this, the applicant filed the
No. 46439 (1987-152003), No. 87743 (192515-1987), No. 87744 (1987-1925)
No. 192516), a pair of left and right clamping bodies are formed that sandwich the reinforcing part from both sides, and these clamping bodies are screwed through each other with bolts, and a linking body with a female thread is connected to one of the clamping bodies. We proposed a support metal fitting that suspends the hanging rod member. If this type of support is used, the hanging rod member can be suspended from any predetermined position after constructing the concrete floor, but since it is screwed, it is troublesome and requires a lot of time and effort. Since these procedures are carried out at high places, they are often very dangerous, and cannot necessarily be said to be sufficient to improve work efficiency.

[Purpose of the invention] Therefore, this invention was devised in view of the existing circumstances as described above, and it was created by taking advantage of the elastic force that the metal fitting itself has against the reinforcing part of the floor plate. The purpose of the present invention is to provide a device that can be securely installed and fixed, and that the installation process is extremely simple and quick, and can be carried out safely even at high places, and that it has a load-bearing capacity that will not come off even under suspended loads. That is.

[Summary of the invention] In order to achieve the above-mentioned object, this invention focuses on the shape of the triangular reinforcing part that is wider at the bottom of the floor plate, and It is designed to be installed in a pinched manner by exerting the elasticity of the metal fittings themselves. Specifically, the bottom of a given floor board plate is wide and the top is narrow, so that the metal fittings themselves can be installed in a pinched manner. This is a support fitting to be attached to a protruding reinforcing part having a substantially triangular cross section, and the inner bottom piece located on the lower surface of the reinforcing part has opposite ends facing each other so as to face both side walls of the reinforcing part so as to be resiliently biased to close each other. The left and right standing leg pieces are bent and erected, and each of the left and right standing leg pieces has a mounting member with a pressing claw that bites into the walls on both sides of the reinforcing part, and a female screw into which a predetermined hanging rod member is screwed. The connecting member is fixed to the mounting member in a downwardly protruding state.

[Embodiments of the invention] Hereinafter, embodiments of the invention will be described with reference to the drawings.

Reference numeral 1 shown in the figure is a mounting member having a side groove shape, and this mounting member 1 is formed on the above-mentioned predetermined floor plate P, for example, the F deck, with a wide bottom and a narrow top, protruding downward. The reinforcing portion S, which has a substantially triangular cross section, is mounted in a pinched manner. That is, left and right standing leg pieces 5 are bent and erected at both ends of the inner bottom piece 2 located on the lower surface of the reinforcing part S, so as to face both side walls of the reinforcing part S, and are elastically biased toward each other in a closing tendency. The standing leg piece 5 is made up of press-stop claws 6 that bite into the walls on both sides of the reinforcing part S, and is made of a belt-like plate of appropriate thickness and width, and in some cases, a spring material with high elasticity. The mounting member 1 is formed by cutting and bending.

The length of the inner bottom piece 2 is not smaller than the width of the bottom surface of the reinforcing part S, and the left and right standing leg pieces 5 are attached to the inner bottom piece 2 so that the upper ends of the left and right standing leg pieces 5 strongly abut against the walls on both sides of the reinforcing part S. The bending angles on both sides of the bottom part are not large compared to the bending angles on both sides of the bottom part.

The retaining claws 6 in the illustrated example are formed by making a pair of left and right incisions diagonally toward the tip of the right and left standing leg pieces 5 on both sides of the left and right standing leg pieces 5, and making left and right cuts on the line connecting the deep ends of these cuts. By folding back the tip end portions of the standing leg pieces 5, the left and right standing leg pieces 5 are formed as sharp portions that protrude inward. According to such a sharp pressing pawl 6, it bites into the both side wall surfaces of the reinforcing part S so as to be strongly press-fitted, and an extremely reliable mounting state can be realized. Of course,
This pressing pawl 6 is not limited to the illustrated shape, but may be bent up by a U-shaped, L-shaped, etc.-shaped cut provided at the center of the left and right standing leg pieces 5, and can be arbitrarily selected.

Reference numeral 4 denotes reinforcing edges bent on both sides of the inner bottom piece 2, and as described later, the connecting member 1 is fixed to the inner bottom piece 2.
This is to prevent the inner bottom piece 2 itself from becoming distorted so that it can sufficiently support the load of the hanging rod member B screwed into the hole.

In addition to the mounting member 1 formed in this way, there is also a connecting member 10 having a female thread 11 into which a predetermined hanging rod member B such as a hanging bolt for suspending a ceiling board or various parts L for electrical equipment, air conditioning, and disaster prevention is screwed. This connecting member 10 is fixed to the mounting member 1 in a state of protruding below the inner bottom piece 2. The connecting member 10 shown in the drawings is, for example, in the shape of a long nut with a hexagonal cross section and has a female thread 11 with a diameter corresponding to the male thread of the hanging rod member B.
The length is such that when the hanging rod member B is screwed in, it can be hung securely without wobbling.

Further, a pullout prevention part 12 is formed at the upper end of the female screw 11 to prevent the hanging rod member B screwed in from below from protruding upward. ), it is formed by crushing the upper end of the female thread 11, curving the thread, providing a protrusion (see FIG. 4), or welding a plate or the like.

A specific example of the structure for fixing the connecting member 10 to the mounting member 1 is shown in FIG. 1, in which the upper end surface of the connecting member 10 is welded and fixed to the lower surface of the inner bottom piece 2,
By doing so, the removal prevention portion 12 at the upper end of the female thread 11 can be obtained as the bottom surface of the inner bottom piece 2. In the case of FIG. 4, the upper part of the connecting member 10 is fitted and fixed in a non-rotatable manner into a non-circular fixing hole 3 drilled in the inner bottom piece 2, and the connecting member 10 cannot be pulled out at the fitting part. Welded to prevent it from coming off.
By doing so, the connecting member 10 is reliably positioned and fixed to the mounting member 1, and idling of the connecting member 10 when the hanging rod member B is screwed into the connecting member 10 is reliably prevented. In the case of FIG. 5, a flange 13 is formed protrudingly on the upper end of the connecting member 10, and the connecting member 10 itself is inserted into the fixing hole 3 drilled in the inner bottom piece 2 from above the inner bottom piece 2, and fixed. The mounting member 1 can be fixed by making the outer shape of the hole 3 and the connecting member 10 non-circular, by making the straight edge formed on the flange 13 come into contact with the inner surface of the reinforcing edge 4, or by fixing it by welding.
Relative rotation between the connecting member 10 and the connecting member 10 is prevented. In this case, the flange 13 is
Since the connecting member 10 is engaged with the upper surface, there is very little risk that the connecting member 10 will be pulled out from the mounting member 1 due to the load of the hanging rod member B being suspended, resulting in excellent support stability. In the case of FIG. 6, the head of a fixing bolt 14 inserted from above the deep bottom piece 2 into the fixing hole 3 drilled in the deep bottom piece 2 is engaged with the deep bottom piece 2 itself, so that the threaded part can be tightened deep into the deep bottom piece 2. While making the bottom piece 2 protrude downward, only the upper part of the long nut-shaped connecting member 10 is screwed to the threaded part, and the inner bottom piece 2 is compressed between the head and the upper part of the connecting member 10, so that the connecting member 10 itself Furthermore, by abutting the straight edge formed on the head against the inner surface of the reinforcing edge 4, rotation of the connecting member 10 is prevented. According to this, the connecting member 10 can be fixed to the mounting member 1 in a state where it cannot be idly rotated by simply assembling the members together without welding. Although not shown, the flanged nut is fitted into the non-circular fixing hole 3 from above the inner bottom piece 2, and the flange is inserted into the reinforcing edge 4.
In addition, a pull-out prevention part 12 may be formed at the end of the female thread next to the flange, thereby making it possible to use the nut itself as the connecting member 10. In any case, the fixing of the connecting member 10 to the mounting member 1 is not limited to these embodiments and illustrated examples, and any fixing that can sufficiently withstand the load of the hanging rod member B screwed into the connecting member 10 may be used. Bye. Furthermore, when the hanging rod member B is screwed in, the connecting member 10 is prevented from idling, and the hanging rod member B is screwed in more than necessary, and in particular, the female thread 11 protrudes upward, and the tip collides with the lower surface of the reinforcing part S, causing it to become deep. It is sufficient if consideration is given to avoiding the application of a force that would push the bottom piece 2 downward and eventually pull it out of the reinforcing part S.

Reference numeral 7 designates a through hole drilled in the left and right leg pieces 5, through which the operating pin T2 of the mounting jig T for expanding the left and right leg pieces 5 when attached to the reinforcing part S is inserted, as shown in FIG. It is designed to be inserted. That is, the mounting jig T shown in the figure is capable of swinging with respect to each other via a swinging portion to cross-mount the handle T1, and has an engagement recess in the front portion of the handle T1 that engages with the edge of the through hole 7. The operating pins T2 are arranged in a row and are inclined inwardly with each other at their tips. In use, the tip of the operating pin T2 is engaged with the through hole 7, and the left and right leg pieces 5 are expanded by closing and gripping the handle T1, and in this state, the reinforcing part S is surrounded from below. By opening the handle T1, the expansion action on the left and right leg pieces 5 can be released, and the clamping claws 6 can be clamped against the walls on both sides of the reinforcing part S. It can be installed easily.

This device is constructed as described above, and when used, as shown in Figures 2 and 3, it is used as a concrete deck C, which is called the F deck, which is constructed through a prescribed construction procedure. At a predetermined position of the reinforcing part S of the floor plate P to be used, for example, the mounting member 1 with the left and right standing leg pieces 5 in a state of being expanded from each other is brought up from below using the mounting jig T, and the mounting jig T is By removing the left and right standing leg pieces 5, or by forcibly driving or pushing the inner surfaces of the left and right standing leg pieces 5 into contact with both sides of the bottom of the reinforcing part S, the reinforcing part S is created by the closing force between the left and right standing leg pieces 5. Attachment is completed by enclosing both walls and simultaneously biting in with the retaining claws 6. Next, the hanging rod member B is screwed and suspended by the connecting member 10 fixed to the mounting member 1, and various members L such as lighting equipment are attached and supported via the hanging rod member B.

[Effect of the invention] Therefore, unlike the conventional method, the hanging rod member B can be suspended at a required predetermined position after the construction of the concrete floor plate C is completed, and the suspension member B can be suspended from the floor plate P in advance. Since there is no need to drill holes, there is no need for wiring for electric drills, and they do not interfere with each other's work at busy construction sites.
Moreover, since it can be attached with one touch by utilizing the elastic force, it is possible to greatly improve work efficiency and also to enable suspension near the reinforcing part S, which was previously impossible.

In particular, the mounting member 1 has left and right standing leg pieces 5 that are bent and erected on both ends of the inner bottom piece 2 located on the lower surface of the reinforcing part S, so as to face both side walls of the reinforcing part S, and elastically biased toward each other in a closing tendency. Since the reinforcement part S
It is installed so as to surround it from below, and
The fact that the reinforcing part S itself is formed so as to protrude downward with a wide bottom part and a narrow top part allows it to be firmly attached by the elastic pinching action of the left and right standing leg pieces 5. In addition, this pinching action can be obtained by forcibly expanding the left and right standing leg pieces 5 and then releasing them, so attachment to the reinforcing part S can be done with a one-touch operation using elastic force. This allows work to be carried out quickly and safely, even at high places, unlike conventional methods.

The left and right standing leg pieces 5 are provided with pressing claws 6 that bite into the walls on both sides of the reinforcing part S, so that after the left and right standing leg pieces 5 are expanded and attached to the reinforcing part S, the left and right standing leg pieces 5 are Coupled with the resilient closing action of 5, the locking pawl 6 bites into it in a strong press-fitting manner.Moreover, this biting action is caused by the loads of the various members L applied via the hanging rod member B. , due to this load, the stopper claw 6
As the reinforcing portion S is further dug into both side wall surfaces, an extremely strong and stable mounting state can be realized.

The connecting member 10 fixed to the mounting member 1 has a female thread 11 into which a predetermined hanging rod member B is screwed,
Since the bottom piece 2 is in a downwardly protruding state, it facilitates the screwing operation when the suspension rod member B is screwed, and it is very practical in that it can sufficiently withstand a large load when screwed. It has a beneficial effect.

[Brief explanation of the drawing]

The drawing shows one embodiment of this invention.
The figure is an exploded perspective view, FIG. 2 is a side view in use, FIG. 3 is a side view in an example of installation, and each of FIGS. 4 to 6 shows another fixing structure between the mounting member and the connecting member. FIG. C... Concrete floor board, P... Floor board plate, S... Reinforcement part, B... Hanging rod member, L... Various parts, T... Mounting jig, T1... Handle, T2
...Operation pin, 1...Mounting member, 2...Bottom piece,
3...Fixing hole, 4...Reinforcement edge, 5...Left and right standing leg piece, 6...Pressure claw, 7...Through hole, 10...Connecting member, 11...Female screw, 12...Removal prevention part , 13
...Flange, 14...Fixing bolt.

Claims (1)

[Claims for Utility Model Registration] 1. A supporting metal fitting attached to a reinforcing part of a prescribed floor board plate having a generally triangular cross-section with a wide bottom and a narrow top projecting downward, the support fitting being located on the lower surface of the reinforcement. Left and right standing leg pieces are bent and erected at both ends of the inner bottom piece so as to face both side walls of the reinforcing part, and are elastically biased toward each other in a closing tendency. It is characterized by having a mounting member having a pressing claw that is inserted into the mounting member, and a connecting member that has a female screw into which a predetermined hanging rod member is screwed and is fixed to the mounting member in a state that projects downward from the bottom piece. Support metal fittings for hanging rod members. 2. The support metal fitting for a hanging rod member according to claim 1, wherein the left and right leg pieces are provided with a through hole into which an operating pin of a mounting jig for expanding the left and right leg pieces is inserted. 3. The support fitting for a hanging rod member according to claim 1 or 2, wherein the connecting member is fixed by welding to the bottom surface of the bottom piece of the mounting member. 4. The support metal fitting for a hanging rod member according to claim 1 or 2, wherein the connecting member is fitted and fixed in a non-rotatable manner to the bottom piece of the mounting member. 5. The support fitting for a hanging rod member according to claim 1 or 2, wherein the connecting member is screwed to a non-rotating fixing bolt that engages and protrudes from above the bottom piece of the mounting member. 6. Support for a suspension rod member according to claim 1 or 2 or 3 or 4 or 5, in which a protrusion prevention portion for the suspension rod member is formed at the upper end of the female thread of the connecting member. Metal fittings.