JPS60208535A - Attachment of hanging lever member to plate for floor foundation - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Gateway Field of the Invention] The present invention relates to a method of attaching a hanging rod member to a floor plate, and relates to a method for attaching a hanging rod member to a floor plate, and is used for horizontal construction of a concrete floor plate in concrete building construction work. A floor plate called a deck is used to suspend suspension rods such as hanging bolts that support various parts for ceiling panels, electrical equipment, air conditioning, and disaster prevention.After the floor plate is constructed, The present invention relates to a method for attaching a hanging rod member to a floor plate which can be attached and supported at any position from below.

[Technical background of the invention and its problems] Conventionally, a floor plate called a "deck", which is made by bending a rolled steel plate of a predetermined thickness and forming a row of triangular reinforcing parts, has been used. When constructing a concrete floor for concrete building construction, ceiling panels, electrical equipment, air conditioning,
In order to suspend hanging rod members such as hanging bolts that suspend and support various disaster prevention parts, inserts must be temporarily fixed from above after the floor plate is stretched, and concrete material is poured. After construction, the floor board plate is connected to the insert 1 to the tool from below by a predetermined means. However, according to this method, it is necessary to drill a mounting hole for fixing the in-4 notebook tool in the floor board play 1, and it is also necessary to make a mounting hole to secure the in-4 notebook tool so that it can sufficiently withstand the impact and vibration of the concrete material being poured. Not only did it have to be done, but it was also inefficient to work on a very crowded construction site.

In order to improve this, the applicant filed the Utility Model Application No. 58-4643.
No. 9, No. 87743, and No. 87744 form a pair of left and right clamping bodies that sandwich the reinforcing part from both sides, and screw these clamping bodies through each other with bolts, and a female screw connected to one of the clamping bodies. We have proposed a support fitting in which a hanging rod member is suspended by a linking body having a.

When using this support bracket, it is possible to suspend the hanging rod member from any predetermined position after constructing the concrete floor, but since it is a screw type, it is troublesome and time-consuming.
Since this type of installation work is carried out at high places,
There are many cases where this method is extremely dangerous, and it has not always been sufficient to improve work efficiency.

[Object of the Invention] The present invention has been created in view of the existing circumstances as described above, and provides an elastic attachment force to the reinforcing portions of the floor brakes 1 to 1. Using a hanging rod member support metal fitting, the elastic force of the metal fitting itself allows it to be securely attached to the reinforcing part in the form of a compression spring, and the installation process is extremely simple, quick, and safe even at high places. The purpose is to have a load-bearing capacity that will not dislodge even under hanging loads.

[Summary of the Invention] In order to achieve the above-mentioned object, the present invention provides a predetermined floor board play 1- with a generally triangular cross-section, the bottom part of which is wide and partially narrowed and protrudes downward. A method for attaching a hanging rod member via a hanging rod member support fitting comprising an attachment member and a connecting member, in order to suspend the hanging rod member from a reinforcing portion, the hanging rod members being elastically biased toward each other to open the chain. A mounting process in which a side groove-shaped mounting member having left and right standing leg pieces facing each other is shielded from below the reinforcement, and pressing claws provided on the left and right standing leg pieces are bitten into the lower surface of the reinforcing part S; (b) A screwing step of screwing a predetermined hanging rod member into the female thread of the connecting member fixed to the real bottom piece of the member.

[Embodiments of the Invention] A detailed description of the present invention will be given below with reference to the drawings.

In the present invention, the reinforcing portion S of a predetermined floor plate P, which has a substantially triangular cross-section and is wide at the bottom and narrow at the top and projects downward, is elastically pinched from both sides thereof. A mounting member 1 is attached to the reinforcing part S, and a connecting member 10 is fixed to the mounting member 1 in a hanging state toward 2F.
And, by using the clamping spring type hanging rod member support fittings F, which are made up of reinforcing members 20 and others, which are incorporated into these as necessary, ceiling boards and various members for electrical equipment, air conditioning, and disaster prevention can be suspended. A predetermined hanging rod member B such as a hanging bolt is suspended from a reinforcing portion S. In other words, the hanging rod member support fitting F
The hanging rod member B is suspended by a mounting step of attaching the mounting member 1 and a screwing step of screwing a predetermined hanging rod member B into the connecting member 1° fixed to the mounting member 1.
Furthermore, if necessary, a reinforcing member 20 is incorporated to prevent the mounting member 1 from expanding and withdrawing after mounting.

To explain the specific structure of the hanging rod member support fitting F, as shown in FIG.
At both ends of the inner bottom piece 2 located on the lower surface, left and right standing leg pieces 5 are bent and erected so as to face the both side walls of the reinforcing part S, and are elastically biased toward each other so as to face each other. , the reinforcing part S is made up of a restraining pawl 6 that bites into both side walls, and is made by cutting and bending a band-shaped plate of appropriate thickness and width, or in some cases, a spring material with high elasticity. It is formed.

The length of the inner bottom piece 2 is not smaller than the width of the lower surface of the reinforcing part S, and the left and right standing leg pieces 5 are attached to the inner bottom part 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. Assuming that it is not larger than the bent angle ridges on both sides of the bottom,
They are bent and erected at an angle to each other.

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 portions of the standing leg pieces 5, the left and right standing leg pieces 5 are formed as sharp parts that protrude inward and cover them. 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 retaining claw 6 is not limited to the shape shown in the drawings, but may be folded up by a cut in the shape of a mouth, L shape, etc. provided at the center of the left and right standing leg pieces 5, and any selection is possible. .

Furthermore, an engaging part 8 is formed at the tip of the left and right standing leg pieces 5, and this engaging part 8 extends as a narrower protruding part than the main body of the left and right standing leg pieces 5, and the engaging part 8 extends from the main body of the left and right standing leg pieces 5. The entire piece 5 is formed to have a substantially convex shape.

Reference numeral 4 denotes reinforcing edges bent on both sides of the inner bottom piece 2, and as will be described later, a hanging rod member B is screwed into the connecting member 10 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 weight.

In addition to the mounting member 1 formed in this way, there is the connecting member 10 that holds the female thread 11 into which a predetermined rod-resistant member B is screwed, and this connecting member 10 is installed in a state in which it protrudes below the bottom piece 2. It is fixed to member 1. The connecting member 10 in the drawings is, for example, in the shape of a long nut with a hexagonal cross section and a female thread 11 whose diameter corresponds to the male thread of the suspension rod member B, and the length of the female thread 11 is the same as that of the suspension rod member B. When member B is screwed in, it can be firmly suspended without wobbling.

Further, a pullout prevention part 12 is formed at the upper end of the female screw 11 so that the hanging rod part UB screwed in from below does not protrude upward. It is formed by crushing, curving a thread, providing a protrusion (see Fig. 7), or welding a plate or the like.

A specific example of the fixing structure of the connecting member 10 to the mounting member 1 is shown in FIG. 2. In FIG. By retracting the head from the bottom piece 2 itself, the threaded part can be attached to the bottom piece 2.
The connecting member 10 is made to protrude downward, and 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 connecting member 101.
It is designed to fix itself and to prevent rotation of the connecting member 10 by bringing the linear edge formed on the head into contact with the inner surface of the reinforcing edge 4. 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 with each other without welding.

In FIG. 7, 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 this, the connecting member 10
is reliably positioned and fixed to the mounting member 1, and reliably prevents the linking member 10 from idling when the hanging member B is screwed into the linking member 10.

In FIG. 8, 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 and the connecting member 10 are connected by making the outer shape of the hole 3 and the connecting part 4110 non-circular, or by making the straight edge formed on the flange 13 contact the inner surface of the reinforcing edge 4, or by welding and fixing it.
It is assumed that rotation relative to the axis is prevented. In this case, since the flange 13 engages with the upper surface of the inner bottom piece 2, the connecting member 10 is moved from the mounting member 1 by the load of the suspension rod 11B.
There is very little risk of it being pulled out, and the support stability is excellent.

Furthermore, although not shown, the upper end surface of the M connecting member 10 may be welded and fixed to the lower surface of the inner bottom piece 2, and by doing so, the removal prevention part 12 at the upper end of the female thread 11 can be obtained as the bottom surface of the inner bottom piece 2. . Furthermore, attach the flange nut to the bottom piece 2.
The non-circular shape σ] may be fitted into the fixing hole 3 from above, the flange may be brought into contact with the reinforcing edge 4, and a pull-out prevention portion 12 may be formed at the end of the female screw next to the flange, thereby preventing the nut from tightening. It is also possible to use itself as the connecting member 10.

゛ In any case, the fixation of the 'N connecting member 10 to the mounting member 1 is not limited to these embodiments and illustrated examples, but can sufficiently withstand the load of the hanging member B of the hanging member 41 screwed into the connecting member 10. 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 1-1 is protruded upward, so that the tip of the hanging rod member B becomes stuck in the reinforcing portion S- It is sufficient if consideration is given to avoiding the application of a force that would collide with the F surface, push the inner bottom piece 2 downward, and eventually pull it out from the reinforcing part S.

Further, 7 is a through hole drilled in the left and right stance leg pieces 5, and the third
As shown in the figure, the operation pin 35 of the handle-shaped installation jig ■1, which will be described later, is inserted into the reinforcing part S (J t: to expand the left and right standing leg pieces 5 when stepping). .

Furthermore, after attachment to the reinforcing portion S, if necessary, a reinforcing member 20 may be attached to the attachment member 1 to control the mutual expansion of the left and right leg pieces 5 in the attachment member 1 by 3F1 (Fig. 6). reference). This reinforcing member 20 has an open surface groove shape with reinforcing edges 21 standing upright along both side edges, and a side groove shape with left and right side walls 24 bent at both ends of the deep wall 22.
The inner wall 22 has a through hole 23 through which the eight connecting member 10 is inserted, and the left and right side walls 24 have engaging holes 25 through which the engaging portion 8 of the mounting member 1 is engaged. .

The reinforcing member 20 itself has a robustness that will not be deformed by external forces. The length is not smaller than the length of the bottom piece 2 of the mounting member 1, and the height of the left and right side walls 24 is also sufficient to reach the engaging portion 8 at the tip of the left and right leg pieces 5. Portrait insertion hole 23 is a round hole with an inner diameter larger than the outer diameter of the main body portion of connecting member 10, so that the connecting member 10 can be quickly inserted into shell insertion hole 23. In addition, the reinforcing member 2 brought from below
When the left and right side walls 24 of 0 reach the engaging part 8, the engaging part 8 changes from an inclined shape to a semi-erect shape. It is brought upward while sliding in contact with each other, so that the engaging hole 25 engages with the engaging part 8. It has a horizontally long rectangular opening that corresponds to an 8-width opening.

To explain the specific procedure for suspending the hanging rod member B from the reinforcing part S using the hanging rod member support fitting F configured in this way, first, the mounting process involves elastically biasing each other in a tendency to close each other. A side groove-shaped mounting member 1 having left and right standing leg pieces 5 facing each other is attached from below the reinforcing part S, and the left and right standing leg pieces 5
The purpose of this is to insert the correct claws 6, which are set up on the sides, into the wall surfaces on both sides of the reinforcing part S.
This means screwing a predetermined hanging rod part UB into the.

A first specific example of the mounting process uses a handle-shaped mounting jig T1, as shown in FIG. That is, a handle-shaped mounting jig T is formed by connecting operation pins 35 each having an engagement recess 36 at the tip 9i to the front of a pair of swing handles 31 which are pivotally connected to each other so as to be swingable.
1, the engaging recess 36 is engaged with the through hole 7 formed in the left and right leg pieces 5 of the mounting member 1, and the left and right leg pieces 5 are forcibly expanded by operating the handle. It is. The specific structure of the handle-shaped mounting jig T1 is as follows:
The swinging handles 31 are pivotally connected to each other so as to be able to swing relative to each other via the swinging portion 32, and the front part of the swinging handle 31 has an engagement recess 36 at the tip that engages with the edge of the through hole 7. The operating pins 35 are arranged in a row so as to be inclined inwardly with respect to each other. In use, the tip of the operating pin 35 is engaged with the through hole 7, and the swing handles 31 are closed and grasped to open the left and right standing leg pieces 5, and in this state, the reinforcing part S is surrounded from below. By widening the swing handle 31, the expansion action on the left and right leg pieces 5 is released, and the right claw 6
The reinforcing portion S can be easily attached by using the through holes 7. In addition, the reference numeral 33 in the figure is a stopper 134 that restricts the expansion swing range of the swing handle 31, and a spring that biases the swing handle 31 in the expansion direction. Of course, the jig T1 is not limited to the illustrated example.

A second specific example of the mounting process uses a pipe-shaped mounting jig T2, as shown in FIG.

That is, the small-diameter support portion 4 that fits around the connecting member 10
2 is attached to the upper end of the pipe body 41, and a pipe-shaped mounting jig T2 of a predetermined length is prepared, and the support part 42 is attached to the connecting member 10.
By fitting outward, the hanging rod member support fitting F is brought from below the reinforcing part S via the connecting member 10, and the left and right standing leg pieces 5 are forcibly expanded along both sides of the reinforcing part S! It was designed so that it could be pushed in. According to this, by making the pipe main body 41 sufficiently long, the work can be done without using a stepladder or scaffolding, which is extremely safe, and the efficiency of the installation work can be improved.

A third specific example of the mounting process uses a holder-shaped mounting jig T3, as shown in FIG. Additionally, a support tube 55 that fits onto the connecting member 10
By preparing a holder-shaped mounting jig T3 that can screw the holder hole 53 formed at the top to the upper end of the pipe 51 of a predetermined length, and fitting the support cylinder 55 onto the connecting member 10, Through the connecting member 10, the hanging rod member support fitting “
is brought from below the reinforcing part S by the pipe 51,
The left and right standing leg pieces 5 are pushed in while being forcibly expanded along both sides of the reinforcing part S. In addition, in the illustration, the pipe 51 and the holder 53 are screwed together by screwing the female thread 54 formed at the bottom of the latter 53 into the male thread 52 formed at the upper end of the former 51. It may also be reversed, and the pipe 51 is at the work site.
For example, it would be a good idea to borrow electrical conduits. According to this, since the pipe 51 may be of general use, it is possible to use various types of pipes existing at the work site, which is convenient, and it is also possible to use the pipe 51 in a similar manner to the case where the pipe-shaped mounting jig T2 is used. Effects can be obtained.

In addition, in the case of the second and third specific examples in the installation process, the hanging rod part 4 is installed inside the pipe body 41 or the pipe 51.
14B may be installed internally and this may be screwed in advance to the connecting part 17j10. is possible.

Therefore, the present invention is constructed through a predetermined construction procedure,
In the concrete floor C that has been installed, the left and right standing leg pieces 5 are expanded to each other using, for example, the first mounting jig T1 at a predetermined position of the reinforcing portion S of the floor board play 1-P, which is called the F deck. By bringing the mounting member 1 in a rough state from below and removing T1, or with the inner surfaces of the left and right standing leg pieces 5 in contact with both sides of the bottom of the reinforcing part S, the second mounting jig 1 is installed. -2 or forcibly 1 with the third mounting jig T3
] By lowering or pushing in, the left and right standing leg pieces 5
A mounting process is performed in which both side walls of the reinforcing part S are surrounded by the mutual closing force and, at the same time, the regular claws 6 bite into the reinforcing part S. At that time, if necessary, the reinforcing part 4420 is brought from below, and the connecting member 1 is drilled into the deep wall 22 and inserted into the LC member insertion hole 23.
0, and the left and right side walls 2-4 are brought into sliding contact with the edges of the engaging part 8, and the engaging hole 25 may be engaged with the engaging part 8. In this way, the suspension rod with a reinforced structure can be formed. Attachment of the member support fitting F is completed. After that, the hanging rod member B is screwed into the connecting member 10 fixed to the mounting member 1 and a screwing process is performed to suspend it. It is something to do.

[Effects of the Invention] Therefore, unlike the conventional method, the hanging rod member B can be suspended at a required predetermined position after completion of construction of the concrete floor plate C, and the floor plate P can be pre-drilled. Because there is no need to do so, there is no need for wiring for electric drills, and there is no need to get in the way of each other's work at a busy construction site.Furthermore, it can be attached with one touch using elastic force, so it is easy to work. In addition to greatly improving efficiency, the suspension near the reinforcing part S, which was previously impossible, can now be carried out at 11F.

In particular, the mounting member 1 of the suspension support fitting F used in the installation process has a side groove shape that allows the left and right standing leg pieces 5, which are biased toward closing each other and face each other, to be tilted to the right. In addition, since the reinforcing part S itself is formed to have a wide bottom and a narrow top so as to protrude downward, it is possible to securely attach the reinforcing part S by the elastic pinching action of the left and right standing leg pieces 5. It is. In addition, this pinching action is achieved by forcibly expanding and then releasing the left and right standing leg pieces 5, 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.

Since the left and right standing leg pieces 5 are provided with regular claws 6 that bite into the walls on both sides of the reinforcing part S, after the left and right standing leg pieces 5 are expanded and attached to the reinforcing part S, the left and right standing legs Coupled with the resilient closing action of the piece 5, the correct claw 6 bites into it in a strong press-fitting manner.Moreover, this biting action is caused by the loads of various members applied via the hanging rod member B. If there is, this load will cause the correct claws 6 to dig into the both side wall surfaces of the reinforcing portion S even more, making it possible to achieve an extremely strong and stable mounting state.

In addition, in the screwing process, a predetermined hanging rod member B is screwed into the female thread 11 of the connecting member 10 fixed to the bottom piece 2 of the mounting member 1, so the screwing process is performed when the hanging rod member B is screwed. It can easily withstand heavy loads when screwed.

As explained above, according to the present invention, a hanging rod member supporting metal fitting that exerts an elastic attachment force on the reinforcing portion of a floor board plate is utilized, and the elastic force that this metal fitting itself has is used. It can be securely attached and fixed to the reinforced part with a pressure spring shape,
Moreover, the installation process is extremely simple and quick, and can be carried out safely even at high places, and it has a load-bearing capacity that will not come off even under suspended loads' - an excellent effect. .

Further, the present invention can be modified in various ways by those skilled in the art without departing from the gist thereof, and these modifications are naturally included in the present invention.

[Brief explanation of the drawing]

Fig. 1 is a side view of the hanging rod member in a suspended state, Fig. 2 is an exploded perspective view of an example of the i1 rod member support fitting used in the method of the present invention, and Fig. 3 is a side view of the hanging rod member when it is installed. A side view of the mounting member of the component support fitting when it is forcibly expanded and installed using a handle-shaped installation jig, and Figure 4 is a side view when it is forcibly pushed in and installed using another pipe-shaped installation jig. Figure 5 is a side view of the case where the mounting is forcibly pushed in using a boulder-shaped mounting jig, and Figure 6 is a side view of the hanging rod member when the reinforcing member is installed. The partially cutaway side view in the state shown in FIG. 7 and FIG. 8 are cross-sectional views showing other examples of the fixing structure of the mounting member and the connecting member in the hanging rod support 1) metal fitting. C... Concrete floor board, P... Floor board plate, S... Reinforcement part, B... Hanging rod member, L...・Various parts, T1...Handle-shaped mounting jig 1, T2...Pipe-shaped mounting jig, T3...Holder-shaped mounting jig, 1...Mounting member, 2...Bottom piece, 3.
...Fixing hole, 4...Reinforcement edge, 5...
・・Left and right stance leg pieces, 6・・Correct claws, 7・・・・
・Through hole, 8... Engaging part, 10... Connecting member, 11... Female thread, 12... Pull-out prevention part, 13... ...Flange, 14...
Fixing bolt, 20... Reinforcement member, 21... Reinforcement edge,
22... Deep wall, 23... Member insertion hole, 2
4... Left and right side walls, 25... Engagement hole, 31... Swinging handle, 32... Swinging part, 33...・Stopper, 34... Spring, 35... Operation pin, 36...
・Engagement recess, 41... Vibrator body, 42...
... Support part, 51 ... Pipe, 52 ...
...Screw, 53...Holder integrated, 54...
...Female thread, 55...Support tube. Patent applicant: Brest Em Co., Ltd. LTL + Kyusho Daiichi
Figure 2 Figure 3 Figure 4 Figure 51 Figure 6 Figure 71

Claims (1)

[Scope of Claims] 1. A reinforcing portion of a predetermined floor board plate having a substantially triangular cross section that is wide at the bottom and narrow at the top and protrudes downward is connected to the mounting member so that the hanging rod member is suspended. A method for attaching a hanging rod member through a hanging rod member support fitting comprising a member, the side groove-shaped installation having left and right standing leg pieces facing each other and elastically biased toward each other in a closing tendency. The installation process involves attaching the component from below the reinforcement, and biting the retaining claws set up on the left and right stand pieces into the walls on both sides of the reinforcement part. A method for attaching a hanging rod member to a floor board plate characterized by a screwing step of screwing in a predetermined hanging rod member.2. A handle-shaped mounting jig is prepared in the front part, consisting of operation bottles each having an engagement recess at the tip, and a through hole is provided in the left and right leg pieces that go into the mounting member. The floor board according to claim 1, wherein the engaging recesses are engaged, the left and right standing leg pieces are forcibly expanded by operating the handle, and in this state, the left and right standing leg pieces are disposed on the reinforcing portion to release the expansion force. How to attach the hanging rod member to the plate. 3. In the installation process, prepare a pipe-shaped mounting jig of a predetermined length with a small-diameter support part that fits externally on the connecting member attached to the upper end of the pipe body, and connect it. By externally fitting the support part onto the member, bring the jj1 support part from below the reinforcement part via the connecting member, force the left and right standing leg pieces along both sides of the reinforcement part, and push them in from the 1! A method for attaching a hanging rod member to a floor plate according to claim 1, wherein: 4. In the attaching step, a boulder integral body having a support tube formed on an upper part that fits externally on the connecting member is attached to a predetermined position. Prepare a holder-type mounting jig that can be screwed onto the upper end of a long pipe, and by fitting the support cylinder onto the connecting member, the hanging rod member support bracket can be attached to the reinforcing part by the pipe through the connecting member. The left and right standing leg pieces that you want to bring from below! A method for attaching a hanging rod member to a floor board plate according to claim 1, in which the legs are forced to expand along both sides of the reinforcing part and pushed in. 5. Hanging The rod member support fitting has left and right standing leg pieces bent and erected at both ends of the inner bottom piece located on the lower surface of the reinforcement so as to face the both side walls of the reinforcement part and elastically biased toward each other in a closing tendency.
The left and right standing leg pieces have a mounting member with a press-stop claw that bites into the walls on both sides of the reinforcing part, and a female screw into which a specified hanging rod member is screwed, and is fixed to the mounting member with the bottom piece protruding downward. A method for attaching a hanging rod member to a floor plate according to any one of claims 1 to 4, comprising: a connecting member; 6. The hanging rod member support fitting has left and right standing leg pieces bent and erected at both ends of the bottom piece located on the lower surface of the reinforcement so as to face the both side walls of the reinforcement part and elastically biased toward each other in a closing tendency. ,
The left and right leg pieces each have a mounting member that has a pressing claw that bites into the walls on both sides of the reinforcing part, and has an engaging part formed at the tip.
It has a female thread into which a predetermined hanging rod member is screwed, a connecting member that is fixed to the mounting member while protruding downward from the bottom piece, and a groove-shaped cross section with reinforcing edges extending vertically along both side edges. The left and right side walls are bent at both ends of the deep bottom wall to form a side groove shape, and the deep bottom wall is provided with a through hole into which the connecting member is inserted, and the left and right both walls are engaged with the engaging portions of the mounting member. 5. A method for attaching a hanging rod member to a floor plate according to any one of claims 1 to 4, comprising reinforcing members each having an engagement hole.