JP2000073530A - Floor load support and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a floor load support capable of simplifying rust preventive treatment of a pipe drum and improving productivity and its manufacturing method. SOLUTION: A pipe drum main body 11 is provided by cutting a steel pipe material of regular size previously applied with rust preventive treatment in specified dimensions. Thereafter, an upper part connecting part 12 and a lower part connecting part 13 are respectively formed on an upper end part 11a and a lower end part 11b of the pipe drum main body 11. Thereafter, a floor receiver member 20 is connected to the upper part connecting part 12, and a base plate 30 is connected to the lower part connecting part 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a floor load support having a pipe body and a method of manufacturing the same. More specifically, the present invention relates to a floor load support having a pipe body that can simplify rust prevention treatment and can be easily manufactured, and a method of manufacturing the same.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 32 and 33, drawing is performed on both ends of a thick pipe p, and then, for example, a right-hand screw m is formed on the inner surface of one of the drawn portions by tapping, and the other is formed. A steel pipe is formed by screwing a floor receiving member b to one end of a pipe-type turnbuckle body a having a left-hand thread n opposite to the above formed by tapping on the inner surface of the throttle portion, and a bottom member c to the other end. Bundle d is known.

However, the conventional steel bundle d uses the pipe-type turnbuckle cylinder a in which the screws m and n are formed by tapping on the inner surface of the pipe p, and thus has the following problems.

[0004] Since the steel bundle d is used under a floor with poor air permeability, it is subjected to rust prevention treatment, for example, hot-dip galvanizing. This hot-dip galvanizing in the pipe-type turnbuckle cylinder a is performed after drawing at both ends, and after this hot-dip galvanizing is performed, one end of the pipe-type turnbuckle cylinder a is internally threaded with a right-hand thread m, and the other end is processed. Then, a female thread is formed on the left-hand thread n. The reason why the female screw is formed after the hot dip galvanization is performed is as follows.

Generally, after hot-dip galvanizing, excessive hot-dip zinc is shaken off by a centrifugal separator, so-called dripping, but the length of the pipe-type turnbuckle cylinder a is
Relatively long compared to the diameter of both ends after drawing,
Also, since the both ends, which are the outlets of the excess molten zinc, are drawn, if female screws are formed at both ends where it is inherently difficult to discharge, the unevenness of the inner surface of both ends due to the mountain valley of the female screw This not only hinders the discharge of the molten zinc, but also causes the molten zinc to stagnate in the recess and fill the thread groove. In such a state, screwing with the bolt cannot be performed, so that re-tapping must be performed. Therefore, in order to avoid screwing twice, screwing is performed after hot-dip galvanizing.

[0006] In view of such a processing procedure, rust prevention of the female screw portion is a sacrificial anticorrosion effect peculiar to zinc of hot-dip galvanizing of a bolt to be screwed into the female screw, that is, the surrounding zinc becomes a cation to produce electric rust. It must rely on the action of chemically preventing iron corrosion. Therefore, there is a problem that the joint between the bolt and the female screw is inferior in durability.

Further, since the plating cannot be sufficiently performed in a state where the pipe-type turnbuckle cylinders a are in contact with each other, the pipe-type turnbuckle cylinders a are manually held one by one in a dedicated jig, and a predetermined amount is held. This is performed by immersing the sheet in a hot-dip galvanizing tank while maintaining the interval. Therefore, there is a problem that the productivity of the steel bundle d is reduced and the cost is increased.

Further, since the steel bundle d using the pipe-type turnbuckle body a has a structure in which bolts are screwed to both ends of the pipe-type turnbuckle body a, the part on the foundation side is necessarily a pipe-type turnbuckle body a. There is also a problem that it is thinner than the turnbuckle body a and lacks stability.

Further, a pipe type turnbuckle cylinder a
Since the steel bundle d using the above method has a structure in which bolts are screwed up and down, it is necessary to take measures against loosening up and down, so that there is also a problem of poor workability.

Japanese Unexamined Patent Publication No. 9-291684 discloses a steel bundle formed by using a pipe-type turnbuckle body 101 in which nut members are permanently attached to both ends of a pipe as shown in FIG. 100, a floor receiving member 110 having a connection portion with a floor back surface member is screwed to one end of a pipe-type turnbuckle body 101, and a bottom member 120 having a connection portion to a base member is screwed to the other end. Have been proposed.

[0011] However, the above-mentioned publication does not teach anything about the above-mentioned problem relating to the rust prevention treatment and its solution.

[0012]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and simplifies the rust prevention treatment of a pipe body, has no portion where rust prevention is inferior, and further improves productivity and productivity. It is an object of the present invention to provide a floor load support having improved workability and a method of manufacturing the same.

[0013]

The floor load support of the present invention is a floor load support having a pipe trunk, wherein the pipe trunk body is obtained by cutting a steel pipe material which has been subjected to a rust-proof treatment in advance to a predetermined size. It is characterized by being made.

According to a first aspect of the floor load supporting device of the present invention, the pipe body has an upper joint portion to which a floor receiving member is joined and a lower joint portion to which a base plate is joined. An upper joint member rotatably provided with a nut at the center of the upper surface is mounted on the upper end portion of the pipe trunk body such that the nut is positioned above the upper end of the pipe trunk body so that the nut cannot rotate and cannot be detached.

[0015] In a first mode of the first embodiment of the floor load support of the present invention, the upper joint member has a flange at an upper end and a required number of concave portions in the outer periphery in a ring shape. An outer member, and an inner member having a nut and a cylindrical body integrally formed on the lower surface of the nut, the cylindrical body having an outer diameter rotatably fitted to the outer member, The inner diameter is a size that does not hinder the advance and retreat of the bolt screwed to the nut, and the length is a size that projects a predetermined amount from the lower surface of the outer member when the same cylindrical body is fitted into the outer member,
By bending the protruding portion outward and making contact with the lower surface of the outer member, the inner member is rotatably and irremovably attached to the outer member, and the upper joint member is fitted into the upper end of the pipe body. The pipe joint body is press-fitted into the concave portion in a state in which the upper joint member is non-rotatably and non-detachably attached to the pipe trunk body.

In this case, it is preferable that an annular groove into which the upper end of the pipe body is inserted is formed at the base of the flange.

According to a second aspect of the first embodiment of the floor load support of the present invention, the upper joint member is formed integrally with a cylindrical outer member having a flange at an upper end, a nut, and a lower surface of the nut. And an inner member having a cylindrical body formed in a fixed manner, wherein the cylindrical body has an outer diameter sized to be rotatably fitted in the outer member, and an inner diameter of the bolt advances and retreats to be screwed into the nut. The length is such that the cylindrical body projects a predetermined amount from the lower surface of the outer member when the cylindrical body is fitted into the outer member, and the protruding portion is bent outward to form the outer member. The inner member is rotatably and irremovably attached to the outer member by being brought into contact with the lower surface of the pipe body, and the flange is bent inward while the upper joint member is fitted in the upper end of the pipe body, thereby bending the flange inward. By crimping to the upper part Mounting of the pipe cylinder body F nonrotatably of undetachable the engagement member is characterized by being made.

In this case, it is preferable that a guide projection is formed on the outer periphery of the lower end of the outer member.

In the first embodiment of the floor load supporting device of the present invention, it is preferable that the floor load supporting device includes a lock cap nut for pressing the flange to lock the rotation of the nut.

In a second embodiment of the floor load supporting device of the present invention, the pipe body has an upper joint portion to which a floor receiving member is joined and a lower joint portion to which a base plate is joined. The lower joining member having the base plate holding portion is mounted on the lower end portion of the pipe body so that the base plate holding portion is located below the lower end of the pipe body and cannot be rotated and cannot be removed.

[0021] In a first aspect of the second form of the floor load support of the present invention, the lower joint member has a flange having a lower end portion and a predetermined number of concave portions formed in an outer periphery in a ring shape. The lower joint member is press-fitted into the recess with the lower joint member fitted into the lower end of the pipe trunk body, so that the lower joint member cannot be attached to the pipe trunk body in a non-rotatable and non-separable manner. It is characterized by being done.

In this case, it is preferable that an annular groove into which the lower end of the pipe body is inserted is formed at the base of the flange.

In a second aspect of the floor load supporting device according to a second aspect of the present invention, the lower joint member is a column having a predetermined shape having a flange at a lower end, and the lower joint member is connected to a pipe body. The flange is bent inward while being fitted to the lower end portion and pressed against the lower end portion of the pipe trunk body, whereby the lower joint member is non-rotatably and non-detachably attached to the pipe trunk body. .

In this case, it is preferable that a guide projection is formed on the outer periphery of the upper end of the column.

In the first aspect of the first and second embodiments of the floor load support of the present invention, it is preferable that the number of the concave portions is one.

According to a third aspect of the floor load supporting device of the present invention, the pipe body has an upper joint portion to which a floor receiving member is joined and a lower joint portion to which a base plate is joined. , An upper joint member having a nut in the center of the upper surface,
The nut is located above the upper end of the pipe body and is rotatably and irremovably attached to the upper end of the pipe body.

In this case, it is preferable to have a lock cap nut for pressing the upper end of the pipe body and the upper surface of the upper joint member to lock the rotation of the nut.

In the floor load supporting device of the present invention, it is preferable that the width across flats of the nut of the lock cap nut is the same as the width across flats of the nut, and that the female screw of the nut is rustproofed. Is also preferred.

The method of manufacturing a floor load support according to the present invention is a method of manufacturing a floor load support having a pipe body, wherein a steel pipe material which has been subjected to a rust-preventive treatment is cut into predetermined dimensions to form a pipe body. Characterized by comprising a step of obtaining.

A first embodiment of the method for manufacturing a floor load support of the present invention is a method for manufacturing a floor load support having a pipe body, which is a method of cutting a steel pipe material, which has been subjected to rust-prevention treatment, into predetermined dimensions. A step of obtaining a pipe body, a step of forming an upper joint at which a floor receiving member is joined to an upper end of the pipe body, and a step of forming a lower joint at which a base plate is joined to a lower end of the pipe body. And characterized in that:

A second embodiment of the method for manufacturing a floor load support according to the present invention is a method for manufacturing a floor load support having a pipe body. A procedure for obtaining a pipe trunk body, a procedure for forming an upper joint portion to which a floor receiving member is joined to an upper end portion of the pipe trunk body, and mounting a lower joining member having a base plate joined to a lower end portion of the pipe trunk body. And a procedure.

In the first and second embodiments of the method for manufacturing a floor load support according to the present invention, the upper joint portion is formed such that an upper joint member having a rotatable nut, for example, is not rotatable and detachable from the upper end of the pipe body. It is formed by mounting impossible.

More specifically, the upper joining member is integrally formed on the lower surface of the nut with a cylindrical outer member having a predetermined shape having a flange at the upper end and a required number of concave portions formed in an annular shape on the outer periphery. The formed outer diameter is a size that is rotatably fitted to the outer member, the inner diameter is a size that does not hinder the advance and retreat of the bolt screwed into the nut, and the cylindrical member is the same length as the outer member. Is formed by fitting a cylindrical body that is sized to protrude from the lower surface of the outer member by a predetermined amount when inserted into the outer member, and bending the protruding portion outward to abut against the lower surface of the outer member; The upper joint member is fitted into the upper end portion of the pipe body, and then the pipe body is press-fitted into the concave portion so that the upper joint member is non-rotatably and irremovably attached to the pipe body.

Alternatively, the upper joint member is rotatably fitted to a cylindrical outer member having a flange at an upper end and having an outer diameter integrally formed on a lower surface of the nut, the outer diameter being formed integrally with the outer member. The inner diameter has a size that does not hinder the advance and retreat of the bolt screwed into the nut, and has a length that projects a predetermined amount from the lower surface of the outer member when the same cylindrical body is fitted into the outer member. The upper joining member is formed by fitting the protruding portion outward and abutting the lower surface of the outer member, thereby fitting the upper joining member into the upper end of the pipe body. Then, the flange is bent inward and the flange is crimped to the upper end of the pipe body, so that the upper joining member is attached to the pipe body in a non-rotatable and non-separable manner.

In a third embodiment of the method of manufacturing a floor load support according to the present invention, the upper joint portion is rotatably and irremovably attached to the upper end of the pipe body at the upper joint member having a nut at the center of the upper surface. It is characterized by being formed.

A fourth embodiment of the method of manufacturing a floor load support according to the present invention is directed to a columnar member having a predetermined shape in which the lower joining member has a flange at a lower end and a required number of concave portions in an outer periphery in an annular shape. And
The lower joint member is fitted into the lower end of the pipe body, and then the lower body is press-fitted into the recess to form the lower joint member.
It is characterized in that it is attached to the pipe body in a non-rotatable and non-detachable manner.

According to a fifth aspect of the method of manufacturing a floor load support of the present invention, the lower joint member is a column having a predetermined shape having a flange at the lower end, and the lower joint member is connected to the lower end of the pipe body. The lower joining member is attached to the pipe trunk main body in a non-rotatable and non-detachable manner by fitting the flange into the portion and then bending the flange inward and pressing the flange against the lower end of the pipe trunk main body.

In the method of manufacturing a floor load support according to the present invention, it is preferable that the number of the concave portions is one.

In the method of manufacturing a floor load support according to the present invention, it is preferable that a procedure for performing a rustproofing treatment is added to the female screw of the nut.

Here, the pipe is, for example, a round pipe, and the rust prevention treatment is, for example, hot-dip galvanizing.

[0041]

As described above, in the present invention, the pipe body is
Since a steel pipe material that has been subjected to rust-prevention treatment such as hot-dip galvanizing is cut into a predetermined length, the rust-prevention treatment of the pipe body is significantly simplified, and the floor load support Productivity also improves dramatically.

In a preferred embodiment of the present invention, the base plate is joined to the pipe body, so that the base plate does not become unstable.

Further, in another preferred embodiment of the present invention, since the joint part by the bolt and the nut is only one upper part, the loosening can be prevented at one place, and the workability is improved.

Further, in another preferred embodiment of the present invention, the female screw of the nut is also subjected to rust prevention treatment.
The joint between the bolt and the nut does not have poor durability.

[0045]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described based on embodiments with reference to the accompanying drawings, but the present invention is not limited to only such embodiments.

Embodiment 1 A floor load support according to Embodiment 1 of the present invention is shown in FIGS.
The floor load support device 1 is mounted on a pipe body 10, a floor receiving member 20 mounted on one end of the pipe body 10 and having a connection portion with a floor back surface member, and mounted on the other end. A base plate 30 and a lock cap nut 40 are provided as main components.

The pipe body 10 includes a main body 11 made of a pipe.
And this body (hereinafter sometimes referred to as the pipe body) 1
An upper joint portion 12 formed at one end (upper end) of the first member 1;
A lower joint 13 formed at the other end (lower end) of the main body 11;
The floor receiving member 20 is mounted on the lower joint portion 13, and the base plate 30 is mounted on the lower joint portion 13.

The main body 11 is obtained by cutting a fixed length pipe having a predetermined length on an outer surface and an inner surface which has been subjected to rust-preventive treatment, for example, hot-dip galvanized. In this case, the cut end face is not subjected to rust-preventive treatment, but this end face is fitted into the annular grooves 12a, 13a provided in the hot-dip galvanized upper joint member 14 or lower joint member 17 as described later. As a result, the end surfaces are prevented from rusting due to the sacrificial corrosion protection of the hot-dip galvanizing present in the annular grooves 12a and 13a. Therefore, it is not necessary to perform a special rust prevention treatment on the end face.

As shown in FIG. 3, the upper joint portion 12 is formed by fitting the upper joint member 14 to the upper end portion 11a of the main body 11.

The upper joining member 14 includes an outer member 15 fitted to the main body 11 and an inner member 16 disposed inside the outer member 15.

The outer member 15 is a cylindrical body having an outer diameter which can be press-fitted into the main body 11 provided with a flange 15a at an upper end portion which is hot-dip galvanized.
1 is formed with an annular groove (recess) 12a to be fitted to the upper end of
Also, several annular grooves (two annular grooves in the illustrated example) 15b are formed in the outer periphery in a wavy shape. In addition, during the hot-dip galvanizing, the hot-dip zinc enters and stays in these annular grooves 12a and 15b, and the staying hot-dip zinc is removed when the hot-dip zinc is cut off by the centrifugal separator.

The inner member 16 includes a nut 16a and a cylindrical body 16c integrally provided near the inner edge of the lower surface 16b of the nut 16a. The inner member 16 is similarly hot-dip galvanized. In this case, molten zinc stagnates in the valley of the internal thread of the nut 16a of the inner member 16, but the inner member 16 is not drawn and the length of the inner member 16 is smaller than the nut 16a.
Since the inner diameter is relatively short, the molten zinc remaining in the valley of the internal thread of the nut 16a during the sag by the centrifugal separator is removed, so that it is not necessary to perform re-tapping.

The outer diameter of the cylindrical body 16c is made slightly smaller than the inner diameter of the cylindrical outer member 15 so that the cylindrical body 16c can be rotated while being fitted into the outer member 15, and the inner diameter is screwed into the nut 16a. The bolt has a size that does not hinder the lifting and lowering of the attached bolt, and has a length such that the lower end thereof slightly projects from the outer member lower surface 15d in a state where the nut 16a is placed on the outer member upper surface 15c. Then, the cylindrical body 16c of the inner member 16 is loosely fitted to the outer member 15, and then the cylindrical body 16c protruding from the lower surface 15d of the outer member.
The inner member 16 is rotatably and irremovably attached to the outer member 15 by pushing the lower end of the outer member outward and crimping the outer member on the lower surface 15d of the outer member. Thereby, the upper joining member 14 is formed.

Then, the upper joining member 14 having such a structure is fitted into the upper end 11a of the main body 11 in a state where the upper end of the main body 11 is inserted into the annular groove 12a, and the upper end 11a of the main body is inserted into the annular groove 15b. By being pressed by a press or the like, the upper joining member 14 is
a. That is, the upper joining member 14 is non-rotatably and irremovably attached to the main body upper end 11a. In addition,
In the first embodiment, the outer periphery of the lower surface 15d of the outer member 15 is tapered to make it easier to insert the upper joining member 14 into the upper end portion 11a of the main body.

As shown in FIG. 4, the lower joint 13 is formed by fitting the lower joint member 17 to the lower end 11b of the main body 11. The lower joining member 17 has a base plate holding portion 18 formed on a lower surface 17a and a
It is a cylindrical body having an outer diameter that can be pressed into the main body 11 provided with b. An annular groove 13a that fits with the lower end of the main body 11 is formed at the base of the flange 17b. A plurality of annular grooves (two annular grooves in the illustrated example) 17c are formed on the outer periphery of the cylindrical body in a wavy shape. The lower joining member 17 is fitted into the lower end 11b of the main body with the lower end of the main body 11 inserted into the annular groove 13a, and then the lower end 11b of the main body is pressed into the annular groove 17c by a press or the like. The lower joining member 17 is fitted to the lower end portion 11b of the main body. That is, the lower joining member 17 is non-rotatably and irremovably attached to the lower end portion 11b of the main body. On the other hand, the base plate holding portion 18 is formed in a cylindrical body having a concave portion 18a formed in the center of the lower surface. This lower joining member 17 is also subjected to hot-dip galvanizing.

As shown in FIG. 5, the floor receiving member 20 is formed by bending a flat plate into an L-shape to form a horizontal portion 2 of a main body 21.
2 A bolt head 26a is joined to the lower surface of the center. Further, the main body 21 is formed with a linear projection 23 directed downward by extrusion processing in a predetermined arrangement.
Since the protrusions 23 are for improving the bending rigidity of the flat plate, the arrangement of the protrusions 23 may be any suitable for this purpose, and is not limited to the arrangement shown. For example, the protrusions 23 may be arranged in a column.
This floor receiving member 20 is also subjected to hot-dip galvanizing in the same manner as in the prior art. In addition, the main body 21 is L as shown in FIG.
The shape is not limited to a letter shape, and may be a flat shape as shown in FIG. 6 or a U shape as shown in FIG.

As shown in FIG. 8, the base plate 30 is a rectangular flat plate having a circular convex portion 31 formed at the center and a mountain-shaped projection 32 formed at the outer periphery.
As shown in FIG. 8, a required number of air vent holes 33 are provided in the base plate 30 in a scattered manner. Some of the air vent holes 33 are also used as concrete nail holes. Upper surface 31a of circular convex portion 31
The bottom plate 17 has a size such that the lower surface 17a of the lower joining member 17 can be placed thereon, and a through hole 34 is formed in the center of the lower joining member 17 so that the base plate holding portion 18 is fitted therein. The joining of the base plate 30 to the lower joint 13 is performed by pushing the outer edge 18b of the base plate holding portion 18 outward while the base plate holding portion 18 is fitted in the through hole 34, and then expanding the outer edge 18b. On the back surface of the upper surface 31a. This base plate 30 is similarly hot-dip galvanized.

As shown in FIG. 9, the lock cap nut 40 has a storage space 41 in the lower part and a nut 42 in the upper part.
The storage space 41 has such a size that the nut 16a of the inner member 16 can be stored with some allowance, so that the play of the nut 16a of the inner member 16 of the upper joint member 14 is absorbed. You. In addition, the lock cap nut 40 preferably has a flange on which an end portion is subjected to a slack / return preventing process such as a serrate process in order to accurately receive an applied load and to prevent loosening. Nut 4 of this lock bag nut 40
The width across flats 2 is the same as the width across flats of the nut 16a of the upper joint member 14. This makes it possible to share the spanner. Then, the lock cap nut 40 is similarly hot-dip galvanized. Thus, the lock cap nut is screwed to the bolt 26 of the floor receiving member 20.

Next, with reference to FIGS. 10 to 16, an example of a procedure for manufacturing the floor load support 1 having such a configuration will be described.

(1) A fixed-length pipe P on which hot-dip galvanization is performed is cut into a predetermined length to obtain a pipe body 11 (see FIG. 10).

(2) The inner member 16 is fitted into the outer member 15 from above, and the portion of the inner member 16 protruding from the lower surface 15d of the outer member 15 is swaged (FIG. 11A).
To FIG. 11 (c)). Thereby, the upper joining member 14
Is completed.

(3) The upper joint member 14 and the lower joint member 17 are fitted into the upper end 11a and the lower end 11b of the main body 11, respectively, and mounted on the worktable J (see FIG. 12).

(4) While rotating the main body 11 while pressing the main body 11 from both ends with a predetermined pressure, the upper joint portion 12 side is formed on the outer periphery of the outer member 15, and the wavy annular groove 15b is formed.
Roller having a convex portion Ra corresponding to the wavy annular groove 17c formed on the outer periphery of the lower joining member 17 on the lower joint portion 13 side by a rolling roller R having a convex portion Ra corresponding to Roll each with R (see FIG. 13). That is, portions of the main body 11 corresponding to the concave portions 15b and 17c of the waveform are replaced with the concave portions 15b and 1c.
7c. Thereby, the upper joint member 14 and the lower joint member 17 are respectively connected to the upper end 11 a of the main body 11.
The upper joint 12 and the lower joint 13 are formed by being fitted to the lower end 11b (see FIG. 14).

(5) The base plate 30 is fitted into the base plate holding portion 18 of the lower joining member 17, and then the base plate 30 is held by caulking the peripheral portion 18 b of the portion of the base plate holding portion 18 projecting from the back surface of the base plate 30. It is held by the unit 18 (see FIG. 15). That is, the base plate 30 is joined to the lower joint 13.

(6) The bolt 26 of the floor receiving member 20 to which the lock bag nut 40 is screwed is connected to the nut 16 of the inner member 16.
a (see FIG. 16). Thereby, the floor load support 1 is completed.

In the manufacturing procedure, the lower joint member 1
The base plate 30 is joined to the pipe body 10 on which the base member 7 is mounted. The base plate 30 is joined to the lower joining member 17 and the lower joining member 17 is hot-dip galvanized. It may be attached to the trunk main body 11. By doing so, the efficiency of hot-dip galvanizing is improved.

Next, the construction of the floor load support 1 having such a configuration will be described.

(1) The floor load supports 1, 1, 1,... Are set at predetermined positions, and the floor receiving members 20, 20, 20,.

(2) A wood screw is driven in from the back of the main body 21 of the floor receiving member 20.

(3) Base plates 30, 30, 30,
... are fixed with adhesive and concrete nails.

(4) The nut 16a of the inner member 16 is rotated in a predetermined direction to raise and lower the floor receiving member 20.

(5) When the floor receiving member 20 completely supports the pulling and the level adjustment is completed, the lock cap nut 40 screwed to the bolt 26 is lowered, and the end face of the outer member 15 By pressing the upper surface 15c, the inner member 16
Lock the nut 16a. That is, the nut 16a of the inner member 16 is prevented from being loosened in a state where a tensile stress acts on the bolt 26 by the pressing force of the lock cap nut 40.

Thus, the construction of the floor load support 1 is completed. When the level of the installed floor load support 1 is adjusted for some reason, the lock bag nut 40 is raised to release the lock, and the nut 16a of the inner member 16 is rotated in a predetermined direction. To raise or lower the floor receiving member 20 to adjust the level.

As described above, in the first embodiment, the pipe body 11 is formed by cutting the fixed-length pipe P, which has been subjected to rust-prevention treatment, to a predetermined length. 11, the rust prevention treatment is significantly simplified, and the length of the pipe body 10 can be set to a desired length. Further, since the upper joint portion 12 is formed by fitting the upper joint member 14 composed of the outer member 15 on which the inner member 16 having the nut 16a is rotatably mounted, to the upper end portion 11a of the main body, The lifting mechanism for the floor load support 1 is significantly simplified. Further, the lower joining portion 13 is formed by fitting a lower joining member 17 having a base plate holding portion 18 to the lower portion 11b of the pipe trunk body, and the base plate holding portion 18 holds the base plate 30 by caulking. Therefore, the configuration of the lower joining portion 13 is significantly simplified. Since the internal threads of the nuts 16a and 42 are also rust-proof, the bolt 26 and the nut 16
The corrosion resistance of the joint with a, 42 does not deteriorate. Since the lock between the bolt 26 and the nut 16a is sufficient at one place, the workability is good. Since the base plate 30 is directly joined to the pipe body 10, the foundation side does not become unstable. Thus, due to such structural features, the floor load support 1 of the first embodiment has high productivity, and accordingly, the manufacturing cost and the construction cost are reduced.

Second Embodiment A floor load support 1 according to a second embodiment of the present invention is shown in FIGS. 17 and 18, and the second embodiment is a modification of the first embodiment. Hereinafter, only differences between the second embodiment and the first embodiment will be described.

As shown in FIGS. 17 and 18, the outer peripheral surface of the outer member 15 of the upper joint member 14 is formed by the corrugated concave portion 15b provided on the outer peripheral surface of the outer member of the first embodiment.
Is provided, and the outer peripheral surface of the lower joining member 17 is also provided with only one corrugated recess 17c. Then, the upper joint member 14 and the lower joint member 17 having such a configuration are pressed into the upper end portion 11a and the lower end portion 11b of the main body 11, respectively, to form the pipe body 10.

As described above, according to the second embodiment,
Since the corrugated concave portions 15b and 17c provided in the upper joint member 14 and the lower joint member 17 are one-step, when the upper joint member 14 and the lower joint member 17 are attached to the pipe body 11, misalignment occurs. Less likely to occur.

Third Embodiment A floor load support 1 according to a third embodiment of the present invention is shown in FIGS. 19 and 20, and the third embodiment is a modification of the first embodiment. Hereinafter, only differences between the third embodiment and the first embodiment will be described.

As shown in FIG. 19 and FIG. 20, the outer peripheral surface of the outer member 15 of the upper joint member 14 is the same as that of the outer member 15 of the first embodiment.
5b is not provided and is flat. The outer peripheral surface of the lower joining member 17 is also flat. Then, the upper joint member 14 and the lower joint member 17 having such a configuration are press-fitted into the upper end portion 11a and the lower end portion 11b of the main body 11, respectively.
0 is formed.

As described above, according to the third embodiment,
Since the pipe body 10 can be manufactured by a simple operation of press-fitting the upper joint member 14 and the lower joint member 15 into the upper end portion 11a and the lower end portion 11b of the main body 11, the productivity of the floor load support 1 is further improved. Further improve. In addition, since neither the outer member 15 nor the lower joining member 17 of the upper joining member 14 has a corrugated concave portion formed on the outer periphery thereof, the cost of the floor load support 1 is significantly reduced.

Fourth Embodiment A floor load support 1 according to a fourth embodiment of the present invention is shown in FIGS.
As shown in FIG. 2, Embodiment 4 is a modification of Embodiment 1. Hereinafter, only differences between the fourth embodiment and the first embodiment will be described.

As shown in FIG. 23, the upper joining member 14 includes an outer member 15 and an inner member 16 rotatably mounted on the outer member 15. The inner member 16 is the same as that of the first embodiment. It is the same as 16. The inner member 16 is attached to the outer member 15 by fitting the inner member 16 into the outer member 15 from above as shown in FIG. 24 (see FIGS. 24A and 24B).
The portion protruding from the lower surface 15f of the outer member 15 is crimped toward the outer member lower surface 15f (see FIG. 24C).

As shown in FIGS. 23 and 24, the outer member 15 is a cylindrical body having a wide flange 15h at the upper end. The outer diameter of the outer member 15 is determined when the outer member 15 is fitted into the upper end 11a of the main body. It is adjusted so as to have a predetermined gap with the inner surface of the main body 11. A guide portion 15i is formed on the outer periphery of the lower end portion of the cylindrical body so as to project over the entire periphery when the outer member 15 is fitted into the upper end portion 11a of the main body. The shape of the guide portion 15i is such that the upper end portion 11a of the main body is smoothly pressed to the outer periphery of the cylindrical body in a press-fitting step described later. For example, it is formed in a smooth curved surface.

As shown in FIG. 25, the lower joining member 17 is a cylindrical body having a wide flange 17g at the lower end, and the outer diameter of the lower joining member 17 is reduced when the lower joining member 17 is fitted into the main body lower end 11b. 11 is adjusted so as to have a predetermined gap with the inner surface. A guide portion 17i is formed on the outer periphery of the end portion of the columnar body when the lower joint member 17 is fitted into the lower end portion 11b of the main body over the entire periphery. The shape of the guide portion 17i is such that the lower end portion 11b of the main body is smoothly pressed to the outer periphery of the cylindrical body in a press-fitting step described later. For example, it is formed in a smooth curved surface.

Next, a description will be given, with reference to FIGS. 26 to 28, of the production of the pipe cylinder 10 according to the fourth embodiment, focusing only on the differences from the first embodiment.

(1) The main body 11 on which the upper joint member 14 and the lower joint member 17 are mounted is vertically set on a jig (not shown) (see FIG. 26).

(2) The flange 15h of the outer member 15 of the upper joint member 14 and the flange 17g of the lower joint member 17 are simultaneously press-fitted from above and below with a press-in die D, and the upper end 1
1a and the lower end 11b are pressed against the outer peripheral surface of the cylindrical body of the outer member 15 and the outer peripheral surface of the cylindrical body of the lower joint member 17, respectively, and the flange 15h of the outer member 15 and the flange 17g of the lower joint member 17 are respectively connected to the upper end 11a of the main body. And crimped to the lower end 11b (see FIGS. 27 and 28).
That is, the upper joint member 14 is attached to the upper end portion 11a of the main body in a non-rotatable and non-removable manner, and the lower joint member 17
Is attached to the lower end portion 11b of the main body so that it cannot rotate and cannot be removed. Thereby, the pipe body 10 is completed.

As described above, according to the fourth embodiment,
The flange 15h of the outer member 15 of the upper joint member 14 is press-fitted so that the upper end 11a of the main body is pressed and held by the flange 15h and the cylindrical body, and the flange 17g of the lower joint member 17 is press-fitted to fit the lower end 11b of the main body with the flange 17g. Since the pressure is held by the cylindrical body, the pipe body 10 can be more easily provided than in the first embodiment.
Can be made. Also, since the upper end 11a and the lower end 11b of the main body are pressed and held by the upper joint member 14 and the lower joint member 17, respectively, the joint strength of the upper joint portion 12 and the lower joint portion 13 is higher than in the third embodiment. Is big.

Fifth Embodiment A floor load support 1 according to a fifth embodiment of the present invention is shown in FIGS. 29 and 30. The fifth embodiment is a modification of the first embodiment. Hereinafter, only differences between the fifth embodiment and the first embodiment will be described.

As shown in FIG. 31, the upper joint member 14 is formed as an integral member having a nut 14a protruding at the center of the upper surface.
Are protruded from the upper end of the main body and are rotatably fitted.
The rotatable fitting of the upper joining member 14 is performed using a dedicated tool. In addition, the lock cap nut 40 is used to secure the rotation of the lock cap nut 40 in the storage space 41.
The size is adjusted so as to have a slight gap with the nut 14a, and the end face 43 is large enough to be in contact with the upper end face of the main body 11 and the upper joining member upper face 14b. Is formed. Reference numeral 14c in the drawing indicates an annular concave portion.

In the fifth embodiment, since the structure of the upper joint member 14 is simplified, the floor load support 1
Can be further improved in productivity and manufacturing cost can be reduced.

Although the present invention has been described based on the embodiments, the present invention is not limited to the embodiments, and various modifications are possible. For example, in the embodiment, a round pipe is used for the pipe body, but the pipe body is not limited to the round pipe, and may be variously shaped pipes, for example, a square pipe or a hexagonal pipe. Pipe. Further, the rust prevention treatment is not limited to hot-dip galvanizing, but may be various types of plating, for example, chrome plating.

[0093]

As described above in detail, according to the present invention, the rust prevention treatment of the floor load support is remarkably simplified, and the excellent effect that the productivity of the floor load support is remarkably improved. Is obtained. In addition, an excellent effect that the cost of the floor load support can be significantly reduced is also obtained. Furthermore, according to the present invention, since the pipe trunk main body is formed by cutting a predetermined-length pipe that has been subjected to rust-prevention treatment in advance to a predetermined length, the pipe trunk body is excellent in that the length of the trunk can be set to a desired length. The effect is obtained. In addition, the lower joining portion is formed by fitting a lower joining member having a base plate holding portion to the lower portion of the main body, and the base plate holding portion holds the base plate by caulking, so that the lower portion becomes unstable. An excellent effect of not being obtained is obtained.

[Brief description of the drawings]

FIG. 1 is a front view of a floor load support according to Embodiment 1 of the present invention.

FIG. 2 is a longitudinal sectional view of the same.

FIG. 3 is a cross-sectional view of the upper joint.

FIG. 4 is a sectional view of the lower joint.

5A and 5B are diagrams illustrating an example of a floor receiving member used in the floor load support device, wherein FIG. 5A is a plan view and FIG.
Shows a front view.

6A and 6B are diagrams showing another example of the floor receiving member used in the floor load supporting device, wherein FIG. 6A shows a plan view and FIG. 6B shows a front view.

FIG. 7 is a view of still another example of the floor receiving member used in the floor load supporting device, wherein FIG. 7 (a) is a plan view,
(B) shows a front view.

8A and 8B are diagrams of a base plate used in the floor load supporting device, wherein FIG. 8A is a plan view and FIG. 8B is a cross-sectional view.

FIG. 9 is a half sectional view of a lock cap nut used in the floor load supporting device.

FIG. 10 is an explanatory diagram of a manufacturing procedure of the floor load support device according to the first embodiment of the present invention, and shows a state in which a fixed length pipe is cut to a predetermined length to obtain a main body.

11 (a) and 11 (b) are explanatory views of the procedure for manufacturing the floor load support according to the first embodiment of the present invention, wherein FIG. 11 (a) shows a state in which the inner member is positioned above the outer member, and FIG. Shows a state in which the inner member is fitted into the outer member, and FIG. 3C shows a state in which a portion of the inner member projecting from the lower surface of the outer member is swaged.

FIG. 12 is an explanatory diagram of a procedure for manufacturing the floor load support device according to the first embodiment of the present invention, and shows a state where the main body in which the upper joint member and the lower joint member are fitted is placed on a workbench;

FIG. 13 is an explanatory diagram of a manufacturing procedure of the floor load support device according to the first embodiment of the present invention, in which an upper end portion and a lower end portion of the main body are press-fitted into recesses of an upper joint member and a lower joint member, respectively. Is shown.

FIG. 14 is an explanatory diagram of a procedure for manufacturing the floor load support device according to the first embodiment of the present invention, and shows a state where the pipe body is completed.

FIG. 15 is an explanatory diagram of the procedure for manufacturing the floor load support device according to the first embodiment of the present invention, and shows a state in which the base plate is joined to the lower joint.

FIG. 16 is an explanatory diagram of a manufacturing procedure of the floor load support device according to the first embodiment of the present invention, showing a state where the floor load support device is completed.

FIG. 17 is a front view of the floor load support according to the second embodiment of the present invention.

FIG. 18 is a longitudinal sectional view of the same.

FIG. 19 is a front view of the floor load support according to the third embodiment of the present invention.

FIG. 20 is a longitudinal sectional view of the same.

FIG. 21 is a front view of a floor load support according to a fourth embodiment of the present invention.

FIG. 22 is a longitudinal sectional view of the same.

FIG. 23 is a longitudinal sectional view of the upper joining portion.

24A and 24B are explanatory diagrams of a manufacturing procedure of the upper joining member, wherein FIG. 24A shows a state in which the inner member is positioned above the outer member, and FIG. 24B is a diagram in which the inner member is fitted into the outer member. (C) shows a state in which a portion of the inner member projecting from the lower surface of the outer member is swaged.

FIG. 25 is a sectional view of the lower joining portion.

FIG. 26 is an explanatory diagram of a manufacturing procedure of the floor load support device according to the fourth embodiment of the present invention, and shows a state in which a main body into which an upper joint member and a lower joint member are fitted is set in a jig.

FIG. 27 is an explanatory diagram of a manufacturing procedure of the floor load support according to the fourth embodiment of the present invention, showing a state where the floor load support is being press-fitted by a press-fitting die.

FIG. 28 is an explanatory diagram of a procedure for manufacturing the floor load support device according to the fourth embodiment of the present invention, showing a state where the pipe body is completed.

FIG. 29 is a front view of the floor load support according to the fifth embodiment of the present invention.

FIG. 30 is a longitudinal sectional view of the same.

FIG. 31 is an enlarged sectional view of the main part.

FIG. 32 is a front view of a conventional steel bundle.

FIG. 33 is a longitudinal sectional view of a pipe type turnbuckle cylinder used for the steel bundle.

FIG. 34 is a sectional view of a steel bundle proposed in JP-A-9-291684.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Floor load support 10 Pipe trunk 11 Pipe trunk main body (body) 12 Upper joint part 13 Lower joint part 14 Upper joint member 15 Outer member 16 Inner member 17 Lower joint member 18 Base plate holding part 20 Floor receiving member 26 Bolt 30 Base plate 40 Lock bag nut P Pipe J Work table D Dice

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[Procedure amendment]

[Submission date] July 15, 1999 (1999.7.1)
5)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction contents]

[Document Name] Statement

Patent application title: Floor load support and manufacturing method thereof

[Claims]

1. A floor load support having a pipe body.
The pipe body is made of a steel pipe material that has been subjected to a rust-proofing process in advance.
The pipe body is cut to a predetermined size, and the pipe body is an upper joint portion to which a floor receiving member is joined.
And a lower joint portion to which a base plate is joined, wherein the upper joint portion attaches an upper joint member on the pipe body.
Formed by non-rotatable and non-separable mounting at the end
It is, the upper joint member is a cylindrical outer member having a predetermined shape formed with a recess of the required number annularly has and an outer peripheral flange at the upper end portion, is formed integrally with the nut and the nut lower surface And an inner member having a cylindrical body, wherein the cylindrical body has an outer diameter that is rotatably fitted to the outer member, and an inner diameter that does not hinder the advance and retreat of a bolt screwed into the nut. The cylindrical body has a length that projects a predetermined amount from the lower surface of the outer member when the cylindrical body is fitted into the outer member, and the protruding portion is bent outward to abut against the lower surface of the outer member. By doing so, the inner member is rotatably and irremovably attached to the outer member, and the upper joint member is non-rotatably and irremovably attached,
In a state of being fitted into the upper joining member into the pipe trunk body upper portion, the floor load support, characterized in that the pipe cylinder body to said recess is made by being pressed.

3. An annular groove into which the upper end of the pipe body is inserted at the base of the flange.
3. The floor load support according to 1 or 2 .

4. A floor load support having a pipe body.
The pipe body is made of a steel pipe material that has been subjected to a rust-proofing process in advance.
The pipe body is cut to a predetermined size, and the pipe body is an upper joint portion to which a floor receiving member is joined.
And a lower joint portion to which a base plate is joined, wherein the upper joint portion attaches an upper joint member on the pipe body.
Formed by non-rotatable and non-separable mounting at the end
Is provided with the upper joint member is a cylindrical outer member having a predetermined shape formed with a flange at an upper end portion and an inner member having a cylindrical body which is integrally formed on the nut and the nut lower surface, said The cylindrical body has an outer diameter that is rotatably fitted to the outer member, an inner diameter that is a size that does not hinder the advance and retreat of a bolt that is screwed into the nut, and a cylindrical body that has the same length as the outer member. When fitted into the member, it is sized to protrude from the lower surface of the outer member by a predetermined amount, and by bending the protruding portion outward to abut against the lower surface of the outer member,
The inner member is rotatably and irremovably mounted on the outer member, and the upper joint member is non-rotatably and irremovably mounted,
A floor load support tool , wherein the upper joint member is fitted into the upper end of the pipe trunk body, and the flange is bent inward and pressed against the upper end of the pipe trunk body.

5. A floor loading support according to claim 4, wherein a guide projection on the outer periphery of the lower end portion of the outer member is formed.

6. A lock cap nut for locking a rotation of a nut by pressing a flange.
The floor load support according to 1, 2, 3 , 4, or 5.

11. Floor load support according to claim 1 or 9, wherein the number of said recesses is formed by the Article.

The base of 12. A flange, floor loading support according to claim 9 or 10, wherein the annular groove is formed in which the pipe cylinder body lower end is inserted.

13. The lower joint member is made of a cylindrical body having a predetermined shape comprising a flange on the lower end, is nonrotatably undetachable attachment of the lower joint member, the
9. The floor load support according to claim 8 , wherein the flange is bent inward while the lower joining member is fitted into the lower end of the pipe trunk body, and is crimped to the lower end of the pipe trunk body.

14. The floor load support according to claim 13, wherein a guide projection is formed on an outer periphery of an upper end portion of the column.

15. Floor load support according to claim 6 or 7, wherein two surface width of the locking cap nut nut, characterized in that formed by the same as width across flats of the nut.

16. A method according to claim 1, 2 rustproofing the internal thread of the nut is characterized by comprising been made, 4, 6 or 7 floor loading support described.

17. The method of claim 1 to the floor load support of the serial <br/> mounting to claim 16, characterized in that rust is galvanized.

18. The pipe floor loading support of <br/> according to any one of claims 1 to 17, characterized in that formed by a round pipe.

19. A method for producing a floor load support having a pipe body, a step of obtaining a pipe cylinder body is cut in advance rust is made the steel pipe into a predetermined size, the pipe cylinder body upper portion in the procedure for forming the upper joint floor pan member is joined, viewed contains a procedure for forming a lower joint base plate is bonded to the pipe cylinder body lower portion, formed of the upper joint, upper Connecting member to the pipe body
By being attached to the upper end of the main body so that it cannot rotate and
The upper joining member has a flange at an upper end and has a required outer periphery.
A cylindrical outer member of a predetermined shape having a number of concave portions in an annular shape
, A nut and a cylindrical body integrally formed on the lower surface of the nut
An inner member having an outer diameter rotatably fitted to the outer member.
Bolt with an inside diameter screwed to the nut
The cylinder has a size that does not hinder the advance and retreat of the
When inserted into the outer member, a predetermined
And projecting the protruding part outward
By bending it into contact with the lower surface of the outer member,
The inner member is rotatably and irremovably attached to the outer member.
The non-rotatable and non-separable mounting of the upper joining member is
The upper joint member is fitted to the upper end of the pipe body
Therefore, the pipe body is press-fitted into the recess.
By the production method of the floor load support according to claim Rukoto.

20. A method for manufacturing a floor load support having a pipe trunk, comprising: a step of cutting a steel pipe material, which has been subjected to rust-prevention treatment, to a predetermined size to obtain a pipe trunk body; in the procedure for forming the upper joint floor pan member is joined, viewed contains a procedure for forming a lower joint base plate is bonded to the pipe cylinder body lower portion, formed of the upper joint, upper Connecting member to the pipe body
By being attached to the upper end of the main body so that it cannot rotate and
The upper joining member has a predetermined shape having a flange at an upper end.
The cylindrical outer member, the nut and the lower surface of the nut are integrally formed.
And an inner member having a cylindrical body formed, the cylindrical body having an outer diameter rotatably fitted into the outer member.
Bolt with an inside diameter screwed to the nut
The cylinder has a size that does not hinder the advance and retreat of the
When inserted into the outer member, a predetermined
And projecting the protruding part outward
By bending it into contact with the lower surface of the outer member,
The inner member is rotatably and irremovably attached to the outer member.
The non-rotatable and non-separable mounting of the upper joining member is
Pressing the upper joint member into the upper end of the pipe body
Method for producing a floor load support, characterized in Rukoto been more done.

21. A method of manufacturing a floor load support having a pipe trunk, comprising: a step of cutting a steel pipe material, which has been subjected to a rust-preventive treatment, into a predetermined size to obtain a pipe trunk body; in the procedure for forming the upper joint floor pan member is joined, viewed contains a procedure for forming a lower joint base plate is bonded to the pipe cylinder body lower portion, formed of the upper joint, upper Connecting member to the pipe body
By being attached to the upper end of the main body so that it cannot rotate and
The upper joining member has a flange at an upper end portion.
The cylindrical outer member, the nut and the lower surface of the nut are integrally formed.
And an inner member having a cylindrical body formed, the cylindrical body having an outer diameter rotatably fitted into the outer member.
Bolt with an inside diameter screwed to the nut
The cylinder has a size that does not hinder the advance and retreat of the
When inserted into the outer member, a predetermined
And projecting the protruding part outward
By bending it into contact with the lower surface of the outer member,
The inner member is rotatably and irremovably attached to the outer member.
The non-rotatable and non-separable mounting of the upper joining member is
The upper joint member is fitted to the upper end of the pipe body
Then, the flange is bent inward and pressure is applied to the upper end of the pipe body.
Method for producing a made are floor loading support, wherein Rukoto by wear.

22. The formation of the lower joint has a flange at the lower end portion, and the lower joint member a recess of required number is a column body having a predetermined shape formed by a annularly on the outer circumference, the pipe cylinder fitted to the body lower portion and then claim 19, 20 or, characterized in that is made by press-fitted pipe cylinder body in the recess to unrotatable undetachable mounted the lower joint member to the pipe trunk body 22. The method of manufacturing a floor load support device according to item 21.

24. The method according to claim 24, wherein the lower joint is formed by a lower joint member having a columnar shape having a flange at a lower end .
Fitted in the pipe cylinder body lower portion, followed by crimping the pipe cylinder body lower portion thereof flange by bending the flange inwardly, made by mounting the lower joint member and the undetachable pipe cylinder body F nonrotatably the process according to claim 19, 20 or 21 floor loading support of wherein Rukoto.

25. The method of claim 19 or 22 bed load support jig, wherein the number of said recesses is formed by the Article.

26. The method of claim 19, 20 or <br/> other manufacturing method of the floor load support of 21, wherein the procedure of forming a rust-preventive treatment to the nut of the female screw is characterized by comprising added.

27. The method of claim 19 or floor loading support of <br/> according to claim 26, wherein the rust preventive treatment is galvanized.

28. The pipe according to claim 19, wherein the pipe is a round pipe .
Method for producing a floor loading support described.

29. Housing floor member by claims 1 to 18 bed load support according to characterized by comprising supported.

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a floor load support having a pipe body and a method of manufacturing the same. More specifically, the present invention relates to a floor load support having a pipe body that can simplify rust prevention treatment and can be easily manufactured, and a method of manufacturing the same.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 32 and 33, drawing is performed on both ends of a thick pipe p, and then, for example, a right-hand screw m is formed on the inner surface of one of the drawn portions by tapping, and the other is formed. A steel pipe is formed by screwing a floor receiving member b to one end of a pipe-type turnbuckle body a having a left-hand thread n opposite to the above formed by tapping on the inner surface of the throttle portion, and a bottom member c to the other end. Bundle d is known.

However, since the conventional steel bundle d uses the pipe-type turnbuckle cylinder a in which the screws m and n are formed by tapping on the inner surface of the pipe p, there are the following problems.

[0004] Because the steel bundle d is used under the floor with poor air permeability, it is subjected to rust prevention treatment, for example, hot-dip galvanizing. This hot-dip galvanizing in the pipe-type turnbuckle cylinder a is performed after drawing at both ends, and after this hot-dip galvanizing is performed, one end of the pipe-type turnbuckle cylinder a is internally threaded with a right-hand thread m, and the other end is processed. Then, a female thread is formed on the left-hand thread n. The reason why the female screw is formed after the hot dip galvanization is performed is as follows.

In general, after hot-dip galvanizing, excessive hot-dip zinc is shaken off by a centrifugal separator, so-called dripping, but the length of the pipe-type turnbuckle cylinder a is limited to both ends after drawing. It is relatively long compared to the diameter of the, and the both ends, which are the outlets for the extra molten zinc, are drawn, so that where it is inherently difficult to discharge, if female threads are formed at both ends, Discharge of the molten zinc is not only hindered by the unevenness of the inner surface at both ends due to the peaks and valleys of the female screw, but also the molten zinc stagnates in the concave portions to fill the thread grooves. In such a state, screwing with the bolt cannot be performed, so that re-tapping must be performed. Therefore, in order to avoid screwing twice, screwing is performed after hot-dip galvanizing.

[0006] In view of such a processing procedure, the rust prevention of the female screw portion is a sacrificial anticorrosion effect peculiar to zinc of hot-dip galvanizing of a bolt to be screwed to the female screw, that is, the surrounding zinc becomes a cation to generate electricity. It must rely on the action of chemically preventing iron corrosion. Therefore, there is a problem that the joint between the bolt and the female screw is inferior in durability.

Further, since the plating cannot be sufficiently performed in a state where the pipe-type turnbuckle cylinders a are in contact with each other, the pipe-type turnbuckle cylinders a are manually held one by one in a dedicated jig, and a predetermined jig is held. This is performed by immersing the sheet in a hot-dip galvanizing tank while maintaining the interval. Therefore, there is a problem that the productivity of the steel bundle d is reduced and the cost is increased.

Further, since the steel bundle d using the pipe-type turnbuckle body a has a structure in which bolts are screwed to both ends of the pipe-type turnbuckle body a, the part on the foundation side is necessarily a pipe-type turnbuckle body a. It becomes thinner than the turnbuckle body a,
There is also the problem of lack of stability.

Further, since the steel bundle d using the pipe-type turnbuckle cylinder a has a configuration in which bolts are screwed up and down, it is necessary to take measures against loosening up and down, so that the workability is poor. There is also a problem.

Japanese Patent Application Laid-Open No. 9-291684 discloses a steel bundle formed by using a pipe-type turnbuckle cylinder 101 in which nut members are undetachably attached to both ends of a pipe, as shown in FIG. 100, a floor receiving member 110 having a connection portion with a floor back surface member is screwed to one end of a pipe-type turnbuckle body 101, and a bottom member 120 having a connection portion to a base member is screwed to the other end. Have been proposed.

However, the above-mentioned publication does not teach at all the problems relating to the above-mentioned rust prevention treatment and the solutions thereto.

[0012]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and simplifies the rust prevention treatment of a pipe body, has no portion where rust prevention is inferior, and further improves productivity and productivity. It is an object of the present invention to provide a floor load support having improved workability and a method of manufacturing the same.

[0013]

According to the present invention, there is provided a floor load support device according to the present invention .
A first form is a floor load support having a pipe body,
The pipe cylinder body is intended to cut the steel pipe pre rust has been made into a predetermined size, the pipe cylinders, the floor receiving
The upper joint where the mounting member is joined and the base plate
And a lower joint that is combined with the upper joint.
The joining member cannot be rotated and cannot be separated from the upper end of the pipe body.
The upper joint member is formed by being freely mounted.
Has a flange at the upper end and a required number of concave parts
A cylindrical outer member having a predetermined shape, a nut, and the nut;
Inner member having a cylindrical body integrally formed on the bottom surface
The cylindrical body has an outer diameter rotatable with respect to the outer member.
Size and fit inside the nut.
The size is such that it does not hinder the advance and retreat of the bolt
When the cylindrical body is inserted into the outer member,
Projecting from the surface by a predetermined amount, and the projecting part
Bend outward and make contact with the lower surface of the outer member
The inner member is rotatable and non-separable from the outer member
Attached, the upper joint member cannot rotate and cannot be detached
Fitting the upper joint member into the upper end of the pipe body
In this state, the pipe body is pressed into the recess.
Characterized Rukoto made by the.

A second form of the floor load support of the present invention is a floor load support having a pipe body , wherein
The body is cut to a predetermined size from a steel pipe material that has been rust-proof
The pipe body is connected to a floor receiving member.
Upper joint and the lower joint where the base plate is joined
And an upper joint portion, wherein the upper joint member includes an upper joint member.
Non-rotatably and detachably attached to the upper end of the pipe body
The upper joining member is formed by
A cylindrical outer member having a predetermined shape comprising: a nut;
Inner part having a cylindrical body integrally formed on the lower surface of the slot
Material, and the outer diameter of the cylindrical body rotates with the outer member.
The nut is screwed into the nut.
The size and length of the bolts will not interfere with the
When the cylindrical body is fitted into the outer member,
It is large enough to protrude from the lower surface by a predetermined amount, and
Bend outward and make contact with the lower surface of the outer member.
The inner member is rotatable and non-separable from the outer member
And the upper joint member is not rotatable and disengaged.
The upper joint member presses against the upper end of the pipe body.
It is characterized by being done by being inserted.

A first embodiment of the floor load support of the present invention and
In the second embodiment, the upper end of the pipe body is located at the base of the flange.
Preferably, an annular groove to be inserted is formed .

A third embodiment of the floor load support of the present invention is a
A floor load support having an ip cylinder, wherein the pipe cylinder
The body is cut to a predetermined size from a steel pipe material that has been rust-proofed in advance.
The pipe body is connected to a floor receiving member.
Upper joint and the lower joint where the base plate is joined
And an upper joint portion, wherein the upper joint member includes an upper joint member.
Non-rotatably and detachably attached to the upper end of the pipe body
The upper joining member is formed by
A cylindrical outer member having a predetermined shape comprising: a nut;
Inner part having a cylindrical body integrally formed on the lower surface of the slot
Material, and the outer diameter of the cylindrical body rotates with the outer member.
The nut is screwed into the nut.
The size and length of the bolts will not interfere with the
When the cylindrical body is fitted into the outer member,
It is sized to protrude from the lower surface by a predetermined amount.
Bend outward to abut the lower surface of the outer member
As a result, the inner member is rotatable and non-separable from the outer member.
The upper joint member is not rotatable and does not come off.
Flexible attachment of the upper joint member to the upper end of the pipe body
With the fitting inserted, bend the flange inward to form a pipe shell.
It is made by crimping to the upper body
You .

The third embodiment of the floor load support of the present invention
A guide projection formed on the outer periphery of the lower end of the outer member.
It is preferred that

The first to third embodiments of the floor load support of the present invention.
In the configuration, the collar is pressed to lock the rotation of the nut.
It is preferred to have a lock cap nut .

[0019] The fourth embodiment of the floor load support of the present invention, Pas
A floor load support having an ip cylinder, wherein the pipe cylinder
The body is cut to a predetermined size from a steel pipe material that has been rust-proofed in advance.
The pipe body is connected to a floor receiving member.
Upper joint and the lower joint where the base plate is joined
And the upper joint portion has a nut at the center of the upper surface.
The upper joint member with the nut
Positioned above and rotatable and separated from the upper end of the pipe body
Attach the upper part of the pipe body and the upper part
Press the upper surface of the member to lock the rotation of the nut, and
A lock with a skirt that keeps the top of the
It is characterized by having a cup nut.

[0020] The fifth embodiment of the floor load support of the present invention, prior to
In the floor load supporting device according to the first to fourth embodiments,
The lower joining portion is characterized in that the lower joining member having the base plate holding portion is non-rotatably and non-detachably attached to the lower portion of the pipe body with the base plate holding portion positioned below the lower end of the pipe body. I do.

The first embodiment of the fifth embodiment of the floor load supporting device of the present invention.
Embodiment, the lower joint member is made a required number of recesses having and outer peripheral flange in the lower end of the pillar having a predetermined shape formed have a circular, non-rotatable and undetachable of instrumentation of the lower joint member
Wear is in a state of being fitted into the lower joint member to the pipe cylinder body lower portion, the pipe cylinder body in the recess characterized in that it is made by being pressed.

The fifth embodiment of the fifth aspect of the floor load support of the present invention is as follows.
In an aspect, the lower joining member has a flange at a lower end portion.
It consists of a column of a predetermined shape, and the lower joint member cannot rotate.
The lower joint member is the pipe body itself
Is performed by press-fitting.

[0023] In a first aspect of the first embodiment and <br/> fifth embodiment of the floor load support of the present invention, the number of the concave portion and Article
May be done .

A fifth embodiment of the floor load support of the present invention
In the first and second aspects of the present invention, the pie
An annular groove into which the lower end of the body is inserted
Is preferred .

The third embodiment of the fifth form of the floor load support of the present invention
In an aspect, the lower joining member has a flange at a lower end portion.
It consists of a column of a predetermined shape, and the lower joint member cannot rotate.
And the non-detachable mounting uses the lower joint member as the pipe body
The flange is bent inward while fitted to the lower end, and
What is done by crimping to the lower end of the body
Features .

The third embodiment of the fifth form of the floor load support of the present invention
In an aspect, a guide projection is provided on an outer periphery of an upper end portion of the column.
Preferably, it is formed .

In the floor load support of the present invention,
The width across flats of the nut of the nut is the same as the width across flats of the nut.
It is preferable that the nuts
It is preferable that rust treatment has been performed. Where the rust prevention
The processing is, for example, hot-dip galvanizing .

In the floor load support of the present invention,
The pipe is, for example, a round pipe .

On the other hand, the method of manufacturing the floor load support of the present invention
The first aspect of the present invention is a method for manufacturing a floor load support having a pipe trunk , comprising: cutting a steel pipe material, which has been subjected to rust-prevention treatment, into predetermined dimensions to obtain a pipe trunk body;
Form an upper joint where the floor receiving member is joined to the upper end of the body
And a base plate at the lower end of the pipe body.
Forming a lower joint to be joined.
The upper joint member is formed on the pipe body by forming the upper joint member.
It is not possible to attach non-rotatably and
The upper joining member has a flange at an upper end and has an outer periphery.
A cylindrical outer portion of a predetermined shape having a required number of concave portions in an annular shape
Material, nut and cylinder integrally formed on the lower surface of the nut
And an inner member having a body, wherein the cylindrical body has an outer diameter of
It is sized to be rotatably fitted to the outer member,
Does not hinder the advance / retreat of the bolt whose diameter is screwed to the nut
A cylindrical body of the same size and length is fitted into the outer member.
Size that projects a predetermined amount from the lower surface of the outer member when
The outer part is bent by bending the protruding part outward.
By contacting the lower surface of the
The upper joint member is rotatably and irremovably mounted.
The non-rotatable and non-removable attachment allows the upper joint member to be
With the pipe fitted into the upper end of the body,
Flop trunk body is characterized Rukoto made by being pressed.

Second Embodiment of the Method for Producing the Floor Load Support of the Present Invention
The form is a method of manufacturing a floor load support having a pipe trunk, a procedure of obtaining a pipe trunk body by cutting a steel pipe material that has been subjected to rust-prevention treatment in advance to a predetermined size, and a floor at an upper end of the pipe trunk body. a step of receiving member to form an upper joint portion joined, said saw including a procedure for forming a lower joint pipe cylinder body lower base plate portion is joined, the upper joint
The part is formed by turning the upper joint member to the upper end of the pipe body.
It is made by mounting it immovably and immovably,
The upper joining member has a predetermined shape having a flange at an upper end.
Formed integrally with the cylindrical outer member, the nut and the lower surface of the nut
And an inner member having a shaped cylindrical body, wherein the cylindrical body
Is a size whose outer diameter is rotatably fitted to the outer member.
And the inner diameter of the bolt is screwed into the nut.
The cylindrical body is sized so as not to interfere and is the same length as the outer part.
Projects a predetermined amount from the lower surface of the outer member when inserted into the material
It is sized and the protruding part is bent outward
The inner member by contacting the lower surface of the outer member.
The upper part is rotatably and irremovably attached to the outer member,
The non-rotatable and non-separable mounting of the joining members
Pressing the joint member into the upper end of the pipe body
Re wherein the Rukoto.

Third Embodiment of the Method for Producing the Floor Load Support of the Present Invention
The form is a method of manufacturing a floor load support having a pipe trunk, a procedure of obtaining a pipe trunk body by cutting a steel pipe material that has been subjected to rust-prevention treatment in advance to a predetermined size, and a floor at an upper end of the pipe trunk body. a step of receiving member to form an upper joint portion joined, said saw including a procedure for forming a lower joint pipe cylinder body lower base plate portion is joined, the upper joint
The part is formed by turning the upper joint member to the upper end of the pipe body.
It is made by mounting it immovably and immovably,
The upper joining member has a predetermined shape having a flange at an upper end.
Formed integrally with the cylindrical outer member, the nut and the lower surface of the nut
And an inner member having a shaped cylindrical body, wherein the cylindrical body
Is a size whose outer diameter is rotatably fitted to the outer member.
And the inner diameter of the bolt is screwed into the nut.
The cylindrical body is sized so as not to interfere and is the same length as the outer part.
Projects a predetermined amount from the lower surface of the outer member when inserted into the material
It is sized and the protruding part is bent outward
The inner member by contacting the lower surface of the outer member.
The upper part is rotatably and irremovably attached to the outer member,
The non-rotatable and non-separable mounting of the joining members
In a state where the joint member is fitted into the upper end of the pipe body,
Bend the flange inward and press it against the top of the pipe body.
Characterized Rukoto made by the.

The fourth method of manufacturing the floor load support of the present invention.
The mode is the same as the first mode to the third mode, except that the lower contact
The formation of the joining portion has a flange at the lower end and a required number of recesses on the outer periphery.
Lower joint made into a columnar body of a predetermined shape having an annular portion
The member is fitted into the lower end of the pipe body,
Press the pipe body into the pipe body
It is not possible to attach it to the main body so that it cannot rotate and cannot be removed.
It is characterized by being performed .

The fifth method of the present invention for producing a floor load support device.
The mode is the same as the first mode to the third mode, except that the lower contact
A column having a predetermined shape in which a joint portion is formed having a flange at a lower end portion.
Into the lower end of the pipe body.
The lower joint member cannot be rotated and detached from the pipe body.
It is characterized in that it is made by mounting it impossible .

The sixth aspect of the method for manufacturing a floor load support of the present invention.
The mode is the same as the first mode to the third mode, except that the lower contact
A column having a predetermined shape in which a joint portion is formed having a flange at a lower end portion.
Into the lower end of the pipe body.
Then, the flange is bent inward and the flange is
By crimping to the lower end of the main body, the lower joint
By attaching it to the body of the
It is characterized by being done .

The first method of manufacturing the floor load support of the present invention
In the form and the fourth form, the number of the concave portions is one.
It may be .

The first method of manufacturing the floor load support of the present invention
In the form to the third form, rust prevention treatment is applied to the female screw of the nut.
May be added. Where the rust prevention
The processing is, for example, hot-dip galvanizing .

Further, the method for manufacturing a floor load support of the present invention
Here , the pipe is, for example, a round pipe .

[00 38]

As described above, in the present invention, the pipe body is
Since a steel pipe material that has been subjected to rust-prevention treatment such as hot-dip galvanizing is cut into a predetermined length, the rust-prevention treatment of the pipe body is significantly simplified, and the floor load support Productivity also improves dramatically.

In a preferred form of the 00 39] The present invention, since the base plate to the pipe body is joined, nor the base plate side becomes unstable.

[00 40] Further, in another preferred embodiment of the present invention, since the bonding point by the bolt and nut are top one place, since the loosening also good in one place, also improves workability.

[00 41] Further, in another preferred embodiment of the present invention, since rust is made in the internal thread of the nut, the joint between the bolt and the nut nor poor durability.

[00 42]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described based on embodiments with reference to the accompanying drawings, but the present invention is not limited to only such embodiments.

[00 43] The floor loading support of the first embodiment according to the first invention of the embodiment shown in FIGS. 1 and 2, the floor load support 1 includes a pipe body 10, mounted on one end of the pipe cylinder 10 A floor receiving member 20 having a connection portion with a floor back surface member, a base plate 30 attached to the other end,
The lock cap nut 40 is provided as a main component.

[00 44] pipe body 10 includes a main body 1 made of pipe
1 and this body (hereinafter also referred to as pipe body)
Upper joint 12 formed at one end (upper end) of 11
And a lower joint 13 formed at the other end (lower end) of the main body 11. A floor receiving member 20 is mounted on the upper joint 12, and the lower joint 13 is
, A base plate 30 is mounted.

[00 45] body 11 is intended to cut in advance rustproofing on the outer surface and inner surface, the standard length of pipe for example, has been galvanized to length. In this case, the cut end face is not subjected to rust prevention treatment, but this end face is provided with annular grooves 12a, 13a provided in the hot-dip galvanized upper joint member 14 or lower joint member 17 as described later.
Therefore, the rust prevention of the end face is achieved by the sacrificial corrosion prevention effect of the hot-dip galvanizing present in the annular grooves 12a and 13a. Therefore, it is not necessary to perform a special rust prevention treatment on the end face.

[00 46] upper junction 12, as shown in FIG. 3,
The upper joining member 14 is configured by fitting to the upper end 11 a of the main body 11.

[00 47] upper joint member 14, are made from the outer member 15 and is disposed inside the outer member 15 has an inner member 16 for mated with the main body 11.

[00 48] The outer member 15 is a cylindrical body of external diameter which can be press-fitted into the main body 11 the flange 15a is provided at the upper end which is the hot-dip galvanizing, the base of the flange 15a, the upper end of the main body 11 An annular groove (recess) 12a that fits with the groove is formed, and several annular grooves (two annular grooves in the illustrated example) 15b are formed on the outer periphery thereof in a wave shape. During hot-dip galvanizing, hot-dip zinc enters these annular grooves 12a and 15b and stays there.
It is removed during sagging by a centrifuge.

[00 49] The inner member 16 includes a nut 16a, are made of a cylindrical body 16c integrally provided on the inner edge near the bottom surface 16b of the nut 16a. The inner member 16 is similarly hot-dip galvanized. In this case, molten zinc stagnates in the valley of the internal thread of the nut 16a of the inner member 16, but the inner member 16 is not drawn and the length of the inner member 16 is smaller than the nut 16a.
Since the inner diameter is relatively short, the molten zinc remaining in the valley of the internal thread of the nut 16a during the sag by the centrifugal separator is removed, so that it is not necessary to perform re-tapping.

The outer diameter of the 00 50 Cylindrical body 16c, as rotatable state, itself fitted to the outer member 15 is slightly smaller than the inner diameter of the cylindrical outer member 15, also in the inner diameter nut 16a The size is such that it does not hinder the lifting and lowering of the screw to be screwed, and the length thereof is such that the lower end slightly projects from the outer member lower surface 15d with the nut 16a placed on the outer member upper surface 15c. And
The cylindrical member 16c of the inner member 16 is loosely fitted to the outer member 15,
Next, a cylindrical body 16 protruding from the lower surface 15d of the outer member.
By pressing the lower end of c outward and crimping it to the outer member lower surface 15d, the inner member 16 is rotatably and irremovably attached to the outer member 15. Thereby, the upper joining member 14 is formed.

[00 51] The upper joint member 14 which is such a configuration is, the annular groove 12a is fitted to the body upper portion 11a in a state where the body 11 upper end is inserted, then the body upper portion 11a in the annular groove 15b is The upper joining member 14 is pressed by a
1a. That is, the upper joining member 14 is non-rotatably and irremovably attached to the main body upper end 11a. Note that, in order to facilitate insertion of the upper joining member 14 into the upper end portion 11a of the main body, in the first embodiment, the outer member 1 is used.
The outer peripheral portion of the lower surface 15d of 5 is tapered.

[00 52] The lower joint 13, as shown in FIG. 4,
The lower joining member 17 is fitted to the lower end 11 b of the main body 11. The lower joining member 17 has a base plate holding portion 18 formed on a lower surface 17a, and
It is a cylindrical body having an outer diameter that can be press-fitted into the main body 11 provided with 7b. An annular groove 13a that fits with the lower end of the main body 11 is formed at the base of the flange 17b. A plurality of annular grooves (two annular grooves in the illustrated example) 17c are formed on the outer periphery of the cylindrical body in a wavy shape. The lower joining member 17 is fitted into the lower end 11b of the main body with the lower end of the main body 11 inserted into the annular groove 13a, and then the lower end 11b of the main body is pressed into the annular groove 17c by a press or the like. The lower joining member 17 is fitted to the lower end portion 11b of the main body. That is, the lower joining member 17
Is attached to the lower end portion 11b of the main body so that it cannot rotate and cannot be removed. On the other hand, the base plate holding portion 18 is formed in a cylindrical body having a concave portion 18a formed in the center of the lower surface. This lower joining member 17 is also subjected to hot-dip galvanizing.

[00 53] floor pan member 20, as shown in FIG. 5,
A bolt head 26a is joined to the lower surface of the center of the horizontal portion 22 of the main body 21 formed by bending a flat plate into an L shape. Further, the main body 21 is formed with a linear projection 23 directed downward by extrusion processing in a predetermined arrangement. Since the protrusions 23 are for improving the bending rigidity of the flat plate, the arrangement of the protrusions 23 may be any suitable for this purpose, and is not limited to the arrangement shown. For example, the protrusions 23 may be arranged in a column. This floor receiving member 20 is also subjected to hot-dip galvanizing in the same manner as in the prior art. The main body 21 is not limited to an L-shaped body as shown in FIG. 5, but may be a flat plate as shown in FIG. 6, or a U-shaped body as shown in FIG.
It may be shaped like a letter.

[00 54] The base plate 30, as shown in FIG. 8, a circular convex portion 31 is formed in the center portion, chevron-shaped protrusions 32 on its outer periphery is a rectangular flat plate formed.
As shown in FIG. 8, a required number of air vent holes 33 are provided in the base plate 30 in a scattered manner. Some of the air vent holes 33 are also used as concrete nail holes. Upper surface 31a of circular convex portion 31
The bottom plate 17 has a size such that the lower surface 17a of the lower joining member 17 can be placed thereon, and a through hole 34 is formed in the center of the lower joining member 17 so that the base plate holding portion 18 is fitted therein. The joining of the base plate 30 to the lower joint 13 is performed by pushing the outer edge 18b of the base plate holding portion 18 outward while the base plate holding portion 18 is fitted in the through hole 34, and then expanding the outer edge 18b. On the back surface of the upper surface 31a. This base plate 30 is similarly hot-dip galvanized.

[00 55] locking cap nut 40, as shown in FIG. 9, it has a receiving space 41 in a lower portion, and a nut 42 at the top
The storage space 41 has such a size that the nut 16a of the inner member 16 can be stored with some allowance, so that the play of the nut 16a of the inner member 16 of the upper joint member 14 is absorbed. You. In addition, the lock cap nut 40 preferably has a flange on which an end portion is subjected to a slack / return preventing process such as a serrate process in order to accurately receive an applied load and to prevent loosening. Nut 4 of this lock bag nut 40
The width across flats 2 is the same as the width across flats of the nut 16a of the upper joint member 14. This makes it possible to share the spanner. Then, the lock cap nut 40 is similarly hot-dip galvanized. Thus, the lock cap nut is screwed to the bolt 26 of the floor receiving member 20.

[00 56] Next, with reference to FIGS. 10 to 16,
An example of a manufacturing procedure of the floor load support 1 having such a configuration will be described.

[00 57] (1) obtaining a pipe cylinder body 11 by a pipe P standard dimension of molten zinc plating is made by cutting to length (see Figure 10).

[00 58] (2) fitted to the outer member 15 the inner member 16 from above, then caulked portion projecting from the lower surface 15d of the outer member 15 of the inner member 16 (FIG. 11 (a)
To FIG. 11 (c)). Thereby, the upper joining member 14
Is completed.

[00 59] (3), respectively an upper joint member 14 and the lower joint member 17 is fitted into the upper portion 11a and lower portion 11b of the body 11 is placed on a workbench J (see FIG. 12).

[00 60] (4) while rotating in a state of being pressed with a predetermined pressure a body 11 from both ends, are formed an upper bonding portion 12 side to the outer periphery of the outer member 15, the waveform-shaped annular groove 15b
Is formed on the outer periphery of the lower joining member 17 by the rolling roller R having the convex portion Ra corresponding to the convex portion Ra corresponding to the wavy annular groove 17c.
Each is rolled by a rolling roller R having (see FIG. 13). That is, portions of the main body 11 corresponding to the concave portions 15b and 17c of the waveform are
17c. Thereby, the upper joint member 14 and the lower joint member 17 are respectively connected to the upper end 11 of the main body 11.
a and the lower joint 11
Then, a lower joint 13 is formed (see FIG. 14).

[00 61] (5) the base plate 30 is fitted to the base plate holder 18 of the lower joint member 17, then the peripheral portion 18b of the portion protruded from the back of the base plate 30 of the base plate holder 18 is caulked to the base plate 30 the base plate It is held by the holding unit 18 (see FIG. 15). That is, the base plate 30 is joined to the lower joint 13.

[00 62] (6) the nut 16 of the bolt 26 the inner member 16 of the lock cap nut 40 bed screwed receiving member 20
a (see FIG. 16). Thereby, the floor load support 1 is completed.

[00 63] In addition, in the manufacturing procedure, but so as to bond the base plate 30 to the pipe body 10 in which the lower joint member 17 is mounted, the lower joint member by joining the base plate 30 to the lower joint member 17 17 May be hot-dip galvanized, and then the lower joining member 17 may be attached to the pipe body 11. By doing so, the efficiency of hot-dip galvanizing is improved.

[00 64] will now be described the construction of the floor load support 1 that is such a configuration.

[00 65] (1) floor loading support 1,1,1, sets ... in position, the floor receiving members 20, 20, 20, are brought into contact with ... the lower surface of Obiki (not shown).

[00 66] (2) driving a wood screw from the rear surface of the main body 21 of the floor pan member 20 to Obiki.

[00 67] (3) the base plate 30, 30, 30,
... are fixed with adhesive and concrete nails.

[00 68] (4) a nut 16a of the inner member 16 is rotated in a predetermined direction, thereby lifting the floor pan member 20.

[00 69] (5) floor pan member 20 is fully supported Obiki, and when the level adjustment has been completed, lowering the locking cap nut 40 which is screwed to the bolt 26, the outer member by its end face 15 is pressed against the upper surface 15c of the inner member 1
6 is locked with the nut 16a. That is, the nut 16a of the inner member 16 is prevented from being loosened in a state where a tensile stress acts on the bolt 26 by the pressing force of the lock cap nut 40.

[00 70] Thus, the construction of the floor load support 1 is completed. When the level of the installed floor load support 1 is adjusted for some reason, the lock bag nut 40 is raised to release the lock, and the nut 16a of the inner member 16 is rotated in a predetermined direction. To raise or lower the floor receiving member 20 to adjust the level.

[00 71] Thus, in this first embodiment, the pipe cylinder body 11, because it is assumed that cutting the pipe P in advance standard dimension that rust is made at a predetermined length, the pipe cylinder The rust prevention treatment of the main body 11 is significantly simplified, and the length of the pipe body 10 can be set to a desired length. Further, since the upper joint portion 12 is formed by fitting the upper joint member 14 composed of the outer member 15 on which the inner member 16 having the nut 16a is rotatably mounted, to the upper end portion 11a of the main body, The lifting mechanism for the floor load support 1 is significantly simplified. Further, the lower joining portion 13 is formed by fitting a lower joining member 17 having a base plate holding portion 18 to the lower portion 11b of the pipe trunk body, and the base plate holding portion 18 holds the base plate 30 by caulking. Therefore, the configuration of the lower joining portion 13 is significantly simplified. Since the internal threads of the nuts 16a and 42 are also rust-proof, the bolt 26 and the nut 16
The corrosion resistance of the joint with a, 42 does not deteriorate. Since the lock between the bolt 26 and the nut 16a is sufficient at one place, the workability is good. Since the base plate 30 is directly joined to the pipe body 10, the foundation side does not become unstable. Thus, due to such structural features, the floor load support 1 of the first embodiment has high productivity, and accordingly, the manufacturing cost and the construction cost are reduced.

[00 72] The floor loading support 1 according to the second embodiment of the second embodiment present invention shown in FIGS. 17 and 18, the second embodiment is made by modifying the first embodiment.
Hereinafter, only differences between the second embodiment and the first embodiment will be described.

[00 73] As shown in FIGS. 17 and 18, the outer peripheral surface of the outer member 15 of the upper joint member 14 of embodiment 1,
Corrugated recess 15 provided on the outer peripheral surface of the outer member
b is provided only in one line, and the lower joint member 17
Is also provided with only one wavy concave portion 17c. The upper joint member 14 and the lower joint member 17 having such a configuration are respectively attached to the main body 11.
Is press-fitted into the upper end portion 11a and the lower end portion 11b.

[00 74] Thus, according to the second embodiment, since the waveform-shaped recess 15b provided in the upper joint member 14 and the lower joint member 17, 17c is 1 Article, upper joint member 14 and the When the lower joint member 17 is mounted on the pipe body 11, there is little possibility of misalignment.

[00 75] The floor loading support 1 according to the third embodiment of the embodiment 3 the invention shown in FIGS. 19 and 20, the third embodiment is made by modifying the first embodiment.
Hereinafter, only differences between the third embodiment and the first embodiment will be described.

[00 76] As shown in FIGS. 19 and 20, the outer peripheral surface of the outer member 15 of the upper joint member 14 of embodiment 1,
The corrugated concave portion 15b provided on the outer peripheral surface of the outer member 15 is not provided, but is flat. The outer peripheral surface of the lower joining member 17 is also flat. Then, the upper joint member 14 and the lower joint member 17 having such a configuration are press-fitted into the upper end portion 11a and the lower end portion 11b of the main body 11, respectively.
0 is formed.

[00 77] Thus, according to the third embodiment, the pipe body 10 by a simple operation of press-fitting the upper joining member 14 and the lower joint member 15 to each of the upper portion 11a and lower portion 11b of the body 11 Therefore, the productivity of the floor load support 1 can be further improved. In addition, since neither the outer member 15 nor the lower joining member 17 of the upper joining member 14 has a corrugated concave portion formed on the outer periphery thereof, the cost of the floor load support 1 is significantly reduced.

[00 78] The floor loading support 1 according to the fourth embodiment four invention embodiments shown in FIGS. 21 22, the fourth embodiment is made by modifying the first embodiment. Hereinafter, only differences between the fourth embodiment and the first embodiment will be described.

[00 79] upper joint member 14 includes an outer member 15 as shown in FIG. 23, consists of an inner member 16 for being rotatably mounted on the outer member 15, inner form 1 of the inner member 16 is carried out It is the same as the member 16. Also,
As shown in FIG. 24, the inner member 16 is fitted to the outer member 15 from above (see FIGS. 24 (a) and (b)). This is performed by caulking a portion of the member 15 projecting from the lower surface 15f toward the outer member lower surface 15f (see FIG. 24C).

[00 80] The outer member 15, as shown in FIGS. 23 and 24, is a cylindrical body having a wide flange 15h on the upper end portion, when the outer diameter of the outer member 15 is fitted into the main body upper portion 11a The main body 11 is adjusted so as to have a predetermined gap with the inner surface. A guide portion 15i is formed on the outer periphery of the lower end portion of the cylindrical body so as to project over the entire periphery when the outer member 15 is fitted into the upper end portion 11a of the main body. The shape of the guide portion 15i is such that the upper end portion 11a of the main body is smoothly pressed to the outer periphery of the cylindrical body in a press-fitting step described later. For example, it is formed in a smooth curved surface.

[00 81] The lower joint member 17, as shown in FIG. 25, is a cylindrical body having a wide flange 17g on the lower end, when the outer diameter of the lower joint member 17 is fitted to the body lower portion 11b It is adjusted so as to have a predetermined gap with the inner surface of the main body 11. A guide portion 17i is formed on the outer periphery of the end portion of the columnar body when the lower joint member 17 is fitted into the lower end portion 11b of the main body over the entire periphery. The shape of the guide portion 17i is such that the lower end portion 11b of the main body is smoothly pressed to the outer periphery of the cylindrical body in a press-fitting step described later. For example, it is formed in a smooth curved surface.

[00 82] Next, with reference to FIGS. 26 to 28,
Regarding the production of the pipe body 10 according to the fourth embodiment,
Only the differences from the first embodiment will be described.

[00 83] (1) The upper joint member 14 and the body 11 the lower joint member 17 is attached is set perpendicular to the jig (not shown) (see FIG. 26).

[00 84] (2) is press-fitted simultaneously in the vertical direction by press fitting the die D a flange 17g of the flange 15h and the lower joint member 17 of the outer member 15 of the upper joint member 14, the body upper portion 1
1a and the lower end 11b are pressed against the outer peripheral surface of the cylindrical body of the outer member 15 and the outer peripheral surface of the cylindrical body of the lower joint member 17, respectively, and the flange 15h of the outer member 15 and the flange 17g of the lower joint member 17 are respectively connected to the upper end 11a of the main body. And crimped to the lower end 11b (see FIGS. 27 and 28).
That is, the upper joint member 14 is attached to the upper end portion 11a of the main body in a non-rotatable and non-removable manner, and the lower joint member 17
Is attached to the lower end portion 11b of the main body so that it cannot rotate and cannot be removed. Thereby, the pipe body 10 is completed.

[00 85] Thus, according to the fourth embodiment, causes crimped held by the main body upper portion 11a of the flange 15h and the cylindrical body by press-fitting the flange 15h of the outer member 15 of the upper joint member 14, the lower joint Since the flange 17g of the member 17 is press-fitted and the lower end portion 11b of the main body is pressed and held by the flange 17g and the columnar body, the pipe body 10 can be manufactured more easily than in the first embodiment. Further, since the upper end portion 11a and the lower end portion 11b of the main body are pressed and held by the upper joint member 14 and the lower joint member 17, respectively, the joint strength of the upper joint portion 12 and the lower joint portion 13 is different from that of the third embodiment. Is big.

[00 86] The floor loading support 1 of the fifth embodiment of the fifth embodiment present invention shown in FIGS. 29 and 30, the fifth embodiment is made by modifying the first embodiment. Hereinafter, only differences between the fifth embodiment and the first embodiment will be described.

[00 87] As shown in FIG. 31, the upper joint member 14
Is formed by an integral member having a nut 14a protrudingly formed at the center of the upper surface, and the nut 14a is provided at the upper end 11a of the main body.
a is protruded from the upper end of the main body and is rotatably fitted. The rotatable fitting of the upper joining member 14 is performed using a dedicated tool. The lock cap nut 40 is
The size of the storage space 41 is adjusted so as to have a slight gap with the nut 14a in order to secure the rotation of the lock cap nut 40, and the end surface 43 of the storage space 41 is large enough to contact the upper end surface of the main body 11 and the upper surface 14b of the upper joint member. Further, a skirt 44 is formed on the outer periphery of the end surface 43 to suppress the spread of the outer periphery of the upper end of the main body. Note that reference numeral 14c in FIG.
Indicates an annular concave portion.

[00 88] In the fifth embodiment, since the configuration of the upper joint member 14 is simplified, floor loading support 1
Can be further improved in productivity and manufacturing cost can be reduced.

[00 89] Although the present invention has been described based on the embodiments, the present invention is not limited only to those embodiments, but may be variously modified. For example, in the embodiment, a round pipe is used for the pipe body, but the pipe body is not limited to the round pipe, and may be variously shaped pipes, for example, a square pipe or a hexagonal pipe. Pipe. Further, the rust prevention treatment is not limited to hot-dip galvanizing, but may be various types of plating, for example, chrome plating.

[00 90]

As described above in detail, according to the present invention, the rust prevention treatment of the floor load support is remarkably simplified, and the excellent effect that the productivity of the floor load support is remarkably improved. Is obtained. In addition, an excellent effect that the cost of the floor load support can be significantly reduced is also obtained. Furthermore, according to the present invention, since the pipe trunk main body is formed by cutting a predetermined-length pipe that has been subjected to rust-prevention treatment in advance to a predetermined length, the pipe trunk body is excellent in that the length of the trunk can be set to a desired length. The effect is obtained. In addition, the lower joining portion is formed by fitting a lower joining member having a base plate holding portion to the lower portion of the main body, and the base plate holding portion holds the base plate by caulking, so that the lower portion becomes unstable. An excellent effect of not being obtained is obtained.

[Brief description of the drawings]

FIG. 1 is a front view of a floor load support according to a first embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of the same.

FIG. 3 is a cross-sectional view of the upper joint.

FIG. 4 is a sectional view of the lower joint.

FIGS. 5A and 5B are diagrams of an example of a floor receiving member used in the floor load support device, wherein FIG. 5A shows a plan view and FIG. 5B shows a front view.

6A and 6B are diagrams showing another example of the floor receiving member used in the floor load supporting device, wherein FIG. 6A is a plan view and FIG. 6B is a front view.

FIGS. 7A and 7B are diagrams showing still another example of the floor receiving member used in the floor load support device, wherein FIG. 7A is a plan view and FIG. 7B is a front view.

8A and 8B are views of a base plate used in the floor load supporting device, wherein FIG. 8A is a plan view and FIG.
Shows a sectional view.

FIG. 9 is a half sectional view of a lock cap nut used in the floor load support tool.

FIG. 10 is an explanatory diagram of a manufacturing procedure of the floor load support device according to the first embodiment of the present invention, and shows a state where a main body is obtained by cutting a fixed length pipe into a predetermined length.

11A and 11B are explanatory diagrams of a procedure for manufacturing the floor load support device according to the first embodiment of the present invention, wherein FIG. 11A shows a state in which the inner member is positioned above the outer member, and FIG. Shows a state in which the inner member is fitted into the outer member, and FIG. 3C shows a state in which a portion of the inner member projecting from the lower surface of the outer member is swaged.

FIG. 12 is an explanatory diagram of a manufacturing procedure of the floor load support device according to the first embodiment of the present invention, showing a state where the main body in which the upper joint member and the lower joint member are fitted is placed on a workbench;

FIG. 13 is an explanatory diagram of a manufacturing procedure of the floor load support device according to the first embodiment of the present invention, in which an upper end portion and a lower end portion of the main body are pressed into recesses of the upper joint member and the lower joint member, respectively. Is shown.

FIG. 14 is an explanatory diagram of a procedure for manufacturing the floor load support device according to the first embodiment of the present invention, and shows a state where the pipe body is completed.

FIG. 15 is an explanatory diagram of a manufacturing procedure of the floor load support device according to the first embodiment of the present invention, and shows a state where the base plate is joined to the lower joint.

FIG. 16 is an explanatory diagram of a procedure for manufacturing the floor load support device according to the first embodiment of the present invention, showing a state where the floor load support device is completed.

FIG. 17 is a front view of the floor load support according to the second embodiment of the present invention.

FIG. 18 is a longitudinal sectional view of the same.

FIG. 19 is a front view of the floor load support according to the third embodiment of the present invention.

FIG. 20 is a longitudinal sectional view of the same.

FIG. 21 is a front view of a floor load support according to a fourth embodiment of the present invention.

FIG. 22 is a longitudinal sectional view of the same.

FIG. 23 is a vertical sectional view of the upper joining portion.

FIGS. 24A and 24B are explanatory diagrams of a manufacturing procedure of the upper joining member, wherein FIG. 24A shows a state in which the inner member is positioned above the outer member, and FIG. (C) shows a state in which a portion of the inner member projecting from the lower surface of the outer member is swaged.

FIG. 25 is a sectional view of the lower joining portion.

FIG. 26 is an explanatory diagram of a manufacturing procedure of the floor load support device according to the fourth embodiment of the present invention, showing a state in which a main body into which an upper joint member and a lower joint member are fitted is set in a jig.

FIG. 27 is an explanatory diagram of a manufacturing procedure of the floor load support according to the fourth embodiment of the present invention, and shows a state where the floor load support is being press-fitted by a press-fitting die.

FIG. 28 is an explanatory diagram of a procedure for manufacturing the floor load support device according to the fourth embodiment of the present invention, showing a state where the pipe trunk is completed.

FIG. 29 is a front view of the floor load support according to the fifth embodiment of the present invention.

FIG. 30 is a longitudinal sectional view of the same.

FIG. 31 is an enlarged sectional view of the main part.

FIG. 32 is a front view of a conventional steel bundle.

FIG. 33 is a longitudinal sectional view of a pipe-type turnbuckle cylinder used for the steel bundle.

FIG. 34 is a cross-sectional view of a steel bundle proposed in JP-A-9-291684.

DESCRIPTION OF SYMBOLS 1 Floor load support 10 Pipe trunk 11 Pipe trunk main body (main body) 12 Upper joint 13 Lower joint 14 Upper joint 15 External member 16 Inner member 17 Lower joint 18 Base plate holder 20 Floor receiving member 26 Bolt 30 Base plate 40 Lock bag nut P Pipe J Work table D Dice

Claims (33)

[Claims] 1. A floor load supporting device having a pipe body, wherein the pipe body is formed by cutting a steel pipe material, which has been subjected to rust-prevention treatment, to a predetermined size. Utensils. 2. The pipe body has an upper joint portion to which a floor receiving member is joined, and a lower joint portion to which a base plate is joined, wherein the upper joint portion is provided with a nut rotatably at a central portion of an upper surface. 2. The floor load support according to claim 1, wherein the upper joining member is mounted on the upper end of the pipe trunk body such that the nut is positioned above the upper end of the pipe trunk main body so that it cannot rotate and cannot be detached. 3. An upper joining member having a flange at an upper end and a cylindrical outer member of a predetermined shape having a required number of concave portions formed in an annular shape on an outer periphery, a nut, and integrally formed on a lower surface of the nut. And an inner member having a cylindrical body, the outer diameter of which is rotatably fitted to the outer member, and the inner diameter of the cylindrical body does not hinder advance / retreat of a bolt screwed into the nut. The cylindrical body has a length that is a length that projects a predetermined amount from the lower surface of the outer member when the same cylindrical body is fitted into the outer member, and the protruding portion is bent outward to form a lower surface on the outer member. By making contact, the inner member is rotatably and irremovably attached to the outer member, and the pipe body is pressed into the recess with the upper joining member fitted into the upper end of the pipe body.
3. The floor load support according to claim 2, wherein the upper joint member is attached to the pipe body in a non-rotatable and non-separable manner. 4. The floor load support according to claim 3, wherein an annular groove into which the upper end of the pipe body is inserted is formed at the base of the flange. 5. An upper joining member includes a cylindrical outer member having a predetermined shape having a flange at an upper end portion, and an inner member having a nut and a cylindrical body integrally formed on a lower surface of the nut. The cylindrical body has an outer diameter that is rotatably fitted to the outer member, an inner diameter that is a size that does not hinder the advance and retreat of a bolt that is screwed into the nut, and has the same length as the cylindrical body. It is sized to protrude from the lower surface of the outer member by a predetermined amount when fitted into the outer member, and by bending the protruding portion outward to abut against the lower surface of the outer member,
The inner member is rotatably and irremovably attached to the outer member, and the upper joining member is fitted to the upper end portion of the pipe body, and the flange is bent inward and crimped to the upper end portion of the pipe body, thereby joining the upper portion. 3. The floor load support according to claim 2, wherein the member is mounted on the pipe body in a non-rotatable and non-removable manner. 6. The floor load support according to claim 5, wherein a guide projection is formed on an outer periphery of a lower end portion of the outer member. 7. A lock cap nut for locking a rotation of a nut by pressing a flange.
Or the floor load support according to 5. 8. A pipe body having an upper joint portion to which a floor receiving member is joined and a lower joint portion to which a base plate is joined, wherein the lower joint portion comprises a lower joint member having a base plate holding portion. 2. The floor load support according to claim 1, wherein the base plate holding portion is positioned below the lower end of the pipe body and is non-rotatably and irremovably attached to the lower end of the pipe body. 9. The lower joint member is formed of a columnar body having a predetermined shape having a flange at a lower end and a required number of concave portions formed in an annular shape on an outer periphery. 9. The non-rotatable and non-detachable mounting of the lower joining member to the pipe body by press-fitting the pipe body into the recess in the fitted state.
The described floor load support. 10. The floor load support according to claim 3, wherein the number of the recesses is one. 11. The floor load support according to claim 9, wherein an annular groove into which the lower end of the pipe body is inserted is formed at the base of the flange. 12. A lower joint member comprising a columnar body having a predetermined shape having a flange at a lower end, and bending the flange inward in a state where the lower joint member is fitted into a lower end of a pipe body. 9. The floor load support according to claim 8, wherein the lower joint member is non-rotatably and irremovably attached to the pipe body by crimping the lower end of the pipe body. 13. The floor load support according to claim 12, wherein a guide projection is formed on an outer periphery of an upper end portion of the column. 14. An upper joint member having an upper joint portion to which a floor receiving member is joined and a lower joint portion to which a base plate is joined, wherein the upper joint portion has a nut at a central portion of an upper surface. 2. The floor load support according to claim 1, wherein a nut is positioned above an upper end of the pipe trunk body, and is rotatably and irremovably attached to the upper end of the pipe trunk body. 15. The floor load support according to claim 14, further comprising a lock cap nut for pressing the upper end of the pipe body and the upper surface of the upper joint member to lock the rotation of the nut. 16. The floor load support according to claim 7, wherein the width across flats of the nut of the lock cap nut is the same as the width across flats of the nut. 17. The floor load support according to claim 2, wherein the female screw of the nut is rust-proofed. 18. The floor load support according to claim 1, wherein the rust prevention treatment is galvanizing. 19. The floor load support according to claim 1, wherein said pipe is a round pipe. 20. A method for manufacturing a floor load support having a pipe trunk, comprising a step of cutting a steel pipe material, which has been subjected to rust prevention treatment in advance, to a predetermined size to obtain a pipe trunk body. Manufacturing method of the floor load supporting device. 21. A method of manufacturing a floor load support having a pipe trunk, comprising: cutting a steel pipe material, which has been subjected to rust-prevention treatment, into predetermined dimensions to obtain a pipe trunk body; A floor connecting member to which a floor receiving member is joined, and a step of forming a lower joining portion to which a base plate is joined to a lower end portion of the pipe trunk body. Manufacturing method. 22. A method of manufacturing a floor load support having a pipe trunk, comprising: a step of cutting a steel pipe material, which has been subjected to rust-prevention treatment, to a predetermined size to obtain a pipe trunk body; A floor joining member to which a floor joining member is joined, and a step of attaching a lower joining member having a base plate joined to a lower end of the pipe trunk body. Manufacturing method of the tool. 23. The upper joint portion is formed by non-rotatably and irremovably mounting an upper joint member having a rotatable nut on an upper end portion of the pipe body. A method for producing the floor load support according to the above. 24. An upper joining member integrally formed on a lower surface of a nut, on a cylindrical outer member having a predetermined shape having a flange at an upper end and a required number of concave portions formed in an annular shape on an outer periphery, The outer diameter is a size that is rotatably fitted to the outer member,
A cylinder whose inner diameter is set to a size that does not hinder the advance and retreat of the bolt screwed into the nut, and whose length is set to a size protruding a predetermined amount from the lower surface of the outer member when the same cylindrical body is fitted into the outer member. Formed by fitting the body, bending the protruding portion outward and abutting against the lower surface of the outer member, fitting the upper joint member into the upper end of the pipe body, and then fitting the pipe body into the recess. And press-fit the upper joint member,
24. The method for manufacturing a floor load support according to claim 23, wherein the floor load support is attached to the pipe trunk body in a non-rotatable and detachable manner. 25. An upper joint member rotatably fitted to a cylindrical outer member of a predetermined shape having a flange at an upper end portion, the outer diameter of which is integrally formed on the lower surface of the nut, being rotatably fitted to the outer member. The inner diameter has a size that does not hinder the advance and retreat of the bolt screwed into the nut, and has a length that projects a predetermined amount from the lower surface of the outer member when the same cylindrical body is fitted into the outer member. The upper joining member is formed by fitting the cylindrical body which has been bent, bending the protruding portion outward and abutting against the lower surface of the outer member, and fitting the upper joining member into the upper end portion of the pipe body. 24. The floor according to claim 23, wherein the upper joint member is non-rotatably and non-detachably attached to the pipe trunk body by bending the flange inward and pressing the flange against the upper end of the pipe trunk body. Manufacturing method of load support . 26. The upper joint portion is formed by attaching an upper joint member having a nut at the center of the upper surface to the upper end portion of the pipe body in a rotatable and non-removable manner. A method for producing the floor load support according to the above. 27. A lower joint member having a flange at a lower end and a columnar body having a predetermined number of concave portions formed in an outer periphery in a ring shape, wherein the lower joint member is provided at a lower end of a pipe body main body. Fit, then press-fit the pipe body into the recess to form the lower joining member,
The method for manufacturing a floor load support according to claim 21 or 22, wherein the floor load support is attached to the pipe body so as to be non-rotatable and detachable. 28. The lower joint member is a column having a predetermined shape having a flange at a lower end portion. The lower joint member is fitted into a lower end portion of a pipe body, and then the flange is bent inward. 23. The method for manufacturing a floor load support according to claim 21, wherein the lower joining member is non-rotatably and non-detachably attached to the pipe trunk main body by crimping a flange to a lower end of the pipe trunk main body. 29. The method according to claim 24, wherein the number of the concave portions is one. 30. The method according to claim 23, wherein a procedure for performing a rust prevention treatment is added to the female screw of the nut.
27. The method for producing a floor load support according to 25 or 26. 31. The method of manufacturing a floor load support according to claim 20, wherein the rust prevention treatment is galvanizing. 32. The method for manufacturing a floor load support according to claim 20, wherein the pipe is a round pipe. 33. A house, wherein a floor member is supported by the floor load support device according to claim 1. Description: