JP2908445B1 - Floor load support and manufacturing method thereof - Google Patents

Abstract

The present invention provides a floor load support using a pipe-type turnbuckle body whose manufacture is simplified, and a method of manufacturing the same. SOLUTION: Both ends 10a of a round or square pipe 10 are provided.
10b is a steel bundle J including a pipe type turnbuckle body 1 to which a nut member 20 is undetachably mounted, the pipe ends 10a and 10b being larger than the outer diameter or outer dimension of the pipe 10. A nut member 20 having an outer diameter or outer diameter flange 23 at the end is inserted until the flange 23 abuts on the end face of the pipe 10, and the portion of the flange 23 projecting outward from the pipe 10 is then inserted into the pipe 10. Ends 10a, 10b
And the pipe ends 10a and 10b are pressed against the nut member 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor load support using a pipe type turnbuckle cylinder and a method of manufacturing the same. More specifically, the present invention relates to an improvement in a floor load support using a pipe-type turnbuckle body in which a floor receiving member and a bottom member are standardized with optimal dimensions, and an improvement in a manufacturing method thereof.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 9 and 10, both ends of a thick-walled pipe p are subjected to drawing, and then, for example, a right-hand thread 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, this conventional steel bundle d has the following problems because it uses a pipe-type turnbuckle cylinder a in which screws m and n are formed by tapping on the inner surface of a pipe p.

(1) Due to the formation of the threads m and n on the inner surface of the pipe p, it is necessary to use a pipe p having a thickness greater than the height of the minimum thread crests and valleys. Steel bundle d using a pipe p having a thickness of

(2) Screws m and n are added to the pipe p after drawing.
Must be formed, and the working process is complicated. That is, to form the threads m and n in the pipe p after drawing, a tap is used, and all necessary threading lengths of the tap are passed through the pipe p. This is because it is necessary to perform a procedure of withdrawing from the container and collecting it. Therefore, the productivity of the pipe-type turnbuckle cylinder a is low, and accordingly, the productivity of the steel bundle d is low.

(3) If the screws m and n are to be formed from both ends of the pipe p in order to improve the productivity, interference between the taps must be avoided. The length is restricted, and it is not always possible to obtain a pipe-type turnbuckle cylinder a having an optimum length. Therefore, the dimension e of the bolt of the floor receiving member b and the bottom member d cannot be unified to the optimum length. For example, as shown in FIG. 11, when the optimum length of the dimension e of the bolt is e ₀ , the dimension e of the bolt is shorter than the optimum length e ₀ because the length of the pipe-type turnbuckle cylinder a is long. e ₁ , or conversely, the dimension e of the bolt becomes e ₂ longer than the optimum length e ₀ because the length of the pipe-type turnbuckle cylinder a is short. That is, the floor receiving member b and the bottom member c cannot be standardized.

To solve the problem of the prior art, Japanese Patent Application Laid-Open No. 9-291684 discloses a pipe-type turnbuckle in which nut members 130 are undetachably attached to both ends of a pipe 120 as shown in FIG. A floor load supporting device 100 using a body 110, a floor receiving member 140 having a connection portion with a floor back surface member is screwed to one end of a pipe-type turnbuckle body 110, and the other end is connected to a base member. A floor load support device 100 in which a bottom member 150 having a portion is screwed is proposed.

However, in the floor load support 100 according to the above proposal, since the nut member 130 having a plurality of annular grooves 132 as shown in FIG. 13 is used, there is a problem that its manufacture is complicated. Note that FIG.
In the middle, the symbol R indicates a right-hand thread, and the symbol L indicates a left-hand thread.

[0009]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems in the prior art, and provides a floor load support using a pipe-type turnbuckle cylinder whose production has been simplified, and a method of manufacturing the same. It is intended to be.

[0010]

According to a first aspect of the present invention, there is provided a floor load support having a pipe-type turnbuckle body in which a nut member is permanently attached to both ends of a round or square pipe. A floor receiving member having a connection portion with the floor back surface member is screwed to one end of the pipe-type turnbuckle body, and a bottom member having a connection portion to the base member is screwed to the other end,
The nut member has a flange having an outer diameter or an outer diameter larger than an outer diameter or an outer diameter of a pipe into which the nut member is inserted,
Non-detachable mounting of the nut member on the end of the pipe, with the nut member inserted into the end of the pipe, crimping a portion of the flange protruding outward from the pipe to the upper end of the pipe, and The present invention relates to a floor load support tool, which is formed by crimping an end of a pipe to which the flange is crimped to the nut member.

A second aspect of the present invention is a method for manufacturing a floor load support device comprising a pipe-type turnbuckle body in which a nut member is irremovably mounted at both ends of a round or square pipe. A step of inserting a nut member having an outer diameter or an outer dimension flange larger than the outer diameter or outer dimension of the pipe at the end until the flange abuts on the end face of the pipe; and Crimping a part protruding outward to the pipe and crimping the pipe to a nut member.

In the first and second embodiments of the present invention, the nut member has an enlarged diameter portion having substantially the same diameter as or an inner diameter of the pipe to be mounted; It is preferable to have a diameter-reduced portion having a diameter or outer dimension smaller than the diameter or outer dimension of the enlarged diameter portion formed integrally, and a flange is formed at an end of the diameter-reduced portion. It is also preferable that the wall thickness is such that the nut diameter of the nut member does not increase when the flange is crimped to the pipe end.

[0013]

Since the floor load support of the present invention is constructed as described above, the manufacture of the nut member is simplified. Therefore, the productivity of the floor load support is improved, and the manufacturing cost is reduced.

[0014]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
The present invention will be described based on embodiments, but the present invention is not limited to only such embodiments.

FIG. 1 shows an embodiment of the floor load support of the present invention.
2 is a longitudinal sectional view, FIG. 2 is a bottom view, and FIG. 3 is a bottom view. This floor load support is specifically a steel bundle J, and a pipe type turnbuckle body 1 has a floor at one end. Receiving member 3
Is screwed, and the bottom member 5 is screwed to the other end.

The pipe type turnbuckle barrel 1 has a pipe body 10 having a locking portion 11 for a body rotating jig formed at the center, and both end portions 10a, 10b of the pipe body 10.
The nut bodies (nut members) 20, 20 mounted on the main body are main components. Here, one nut body 2
0 has a right-hand thread R, and the other nut body 20 has a left-hand thread L (see FIG. 4). The locking portion 11 for the body rotating jig is formed by, for example, press-molding the outer periphery of the pipe body 10 to have a substantially square or hexagonal shape.

As shown in FIG. 4, the nut body 20 has an outer diameter slightly smaller than the inner diameter of the pipe body 10, that is, an enlarged diameter portion 21 having substantially the same diameter, and a reduced diameter having a flange 23 at a tip end 22a. A female screw 24 is formed at the center of the tapered portion. And this nut body 20
Is inserted into the ends 10a and 10b of the pipe body 10, and the flange 23 is crimped to the ends 10a and 10b of the pipe body 10 while the flange 23 is in contact with the end face of the pipe body 10. As a result, the nut body 20 is attached to the ends 10a and 10b of the pipe body 10 (see FIGS. 5 and 6).

As shown in FIGS. 1 and 2, the floor receiving member 3 has a floor receiving member main body 31 formed by bending a flat plate into an L-shape, and a bolt 36 connected to the floor receiving member main body 31. Consists of Horizontal portion 3 of floor receiving member body 31
In FIG. 2, linear projections 33 directed downward are formed in a predetermined arrangement by extrusion as shown in FIG. Since the protrusions 33 are for improving the bending rigidity of the horizontal portion 32, the arrangement of the protrusions 33 may be any suitable for this purpose, and is not limited to the illustrated arrangement. . For example, the protrusions 33 may be arranged in a column. A bolt head 37 is fixed to the flat central rear surface 34 of the horizontal part 32. In addition, horizontal section 3
At the appropriate position of the flat portion 2, a through hole 38 for nailing is formed as shown in the figure. The floor receiving member body 3
1 is not limited to an L-shape, for example, U
It may be in the shape of a letter or a flat plate.

The bottom member 5 is, as shown in FIGS.
The bottom plate 51 includes a rectangular bottom plate 51 and a bolt 53 having a head portion 53a fitted into a joint portion 52 protruding upward from a central portion of the bottom plate 51 and welded.
This bottom plate 51 has a pair of through holes 54 for inserting a foundation bolt,
54 and the required number of vent holes 55, 55, 55,...
Are provided. The head 53a of the bolt 53 fitted into the joint 52 of the bottom plate 51 is flush with the back surface of the bottom plate 51 so that the bottom plate 51 is not rattled when placed on a foundation. The shape of the bottom plate 51 is not limited to a rectangle, but may be various shapes, for example, a square, a circle, or a hexagon. The bottom plate 51 may be provided with a reinforcing rib.

In this embodiment, since the pipe type turnbuckle cylinder 1 has a desired size, the bolts 36, 5
The dimensions L ₁ and L ₂ of _No. 3 can be unified to the optimum length (see FIG. 8). Therefore, the floor receiving member 3 and the bottom member 5 are standardized. The bolt 36 used for the floor receiving member 3
Is a right-hand thread, the bolt 53 used for the bottom member 5
Is left-handed.

Next, the manufacture of the steel bundle J having such a configuration will be described.

(1) The pipe is cut into a predetermined length to form a pipe body 10. Alternatively, a pipe cut to a predetermined length is prepared. In this case, the minimum length of the pipe body 10 can be twice as long as the nut body 20. Also,
The pipe body 10 and the nut body 20 that have been cut to a predetermined length may be previously subjected to hot-dip galvanizing.

(2) The nut body 20, 20 is connected to the enlarged diameter portion 2
One end is inserted into both ends 10a and 10b of the pipe main body 10, and the flange 23 is brought into contact with both ends of the pipe main body 10.

(3) For example, as shown in FIG. 5, a special jig 6 is used, and a nut body 2 is attached to a processing portion 61 of the special jig 6.
0 is pressed into the pipe ends 10a, 10b of the flange 23 and the pipe end 1
The compression bonding of 0a and 10b to the reduced diameter portion 22 is performed simultaneously (see FIG. 6). In this case, if the thickness of the collar 23 is too thick,
When the flange 23 is crimped to the ends 10a and 10b of the pipe body 10, the female screw 24 is pulled outward and the mouth is opened, so that the thickness of the flange 23 is preferably as thin as possible. Note that this thickness is specifically determined by a compression test or the like.

(4) An engaging portion 11 for the body rotating jig is formed in the center of the pipe body 10 by, for example, press working. Thus, the manufacture of the pipe-type turnbuckle cylinder 1 is completed.

(5) A bolt 36 of the floor receiving member 3 is screwed to one end of the pipe-type turnbuckle cylinder 1, and a bolt 53 of the bottom member 5 is screwed to the other end to form a steel bundle J.

Note that the procedure (3) and the procedure (4) may be interchanged.

As described above, according to this embodiment, the nut bodies 20, 20 are inserted into the ends 10a, 10b of the pipe body 10, and then the flange 23 of the nut body 20 is connected to the pipe body 10.
The pipe-type turnbuckle cylinder 1 can be manufactured by a simple operation of crimping to the ends 10a and 10b. Further, since the nut body 20 is also composed of the reduced diameter portion 22 having the flange 23 at the distal end and the enlarged diameter portion 21, the manufacturing process is simplified. Therefore, the pipe type turnbuckle barrel 1
The productivity of the steel bundle J is accordingly improved. Therefore, the manufacturing cost of the steel bundle J is also significantly reduced.

As described above, the present invention has been described based on the embodiments. However, the present invention is not limited to only such embodiments, and various modifications are possible. For example, in the embodiment, the nut body is configured such that the enlarged diameter portion and the reduced diameter portion are integrally formed. However, the nut body may be a cylindrical shape having no step. Further, in the embodiment, the pipe is a round pipe, but the pipe is not limited to a round pipe, and may be a square pipe. In this case, the locking portion for the body rotating jig provided at the center of the round pipe becomes unnecessary, and the productivity and cost can be further improved.

[0030]

As described in detail above, according to the present invention, a nut body having a flange formed therein is inserted into both ends of a pipe body,
Then, since the pipe-type turnbuckle cylinder can be manufactured by a simple operation of crimping the outwardly protruding part of the flange pipe to both ends of the pipe body, the productivity of the pipe-type turnbuckle cylinder has been significantly improved, An excellent effect is obtained in that the productivity of floor load supports such as steel bundles is improved and the cost is reduced.

[Brief description of the drawings]

FIG. 1 is a front view of a steel bundle according to an embodiment of the present invention.

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

FIG. 3 is a bottom view of the same.

FIG. 4 is a front view of an example of the nut body of the embodiment.

FIG. 5 is a vertical cross-sectional view of the pipe body in the embodiment in which a nut body is inserted.

FIG. 6 is a longitudinal sectional view of the pipe body to which the nut body is mounted in the same embodiment.

FIG. 7 is a plan view of a floor receiving member.

FIG. 8 is an explanatory view showing that bolts can be unified to optimal dimensions even when the heights between the foundation and the floor are different.

FIG. 9 is a front view of a conventional steel bundle.

FIG. 10 is a longitudinal sectional view of a pipe-type turnbuckle cylinder used for the steel bundle.

FIG. 11 is an explanatory view showing that bolts cannot be unified to optimum dimensions because a pipe-type turnbuckle cylinder cannot have a desired length.

FIG. 12 is a longitudinal sectional view of a steel bundle proposed in Japanese Patent Application Laid-Open No. 9-291684.

FIG. 13 is a sectional view of a nut body used for the steel bundle.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Pipe type turnbuckle trunk 3 Floor receiving member 5 Bottom member 6 Dedicated jig 10 Pipe main body 11 Engagement part 20 Nut body (nut member) 21 Enlarged diameter part 22 Reduced diameter part 23 Flange 24 Female screw 31 Floor receiving member main body 32 Horizontal Part 33 Protruding part 34 Center back surface 36 Bolt 37 Bolt head 38 Through hole 51 Bottom plate 52 Joint 53 Bolt 54, 55 Through hole 61 Working part J Steel bundle R Right screw (female screw) L Left screw (female screw) L ₁ , the dimensions of the L ₂ bolt

Claims (6)

(57) [Claims] 1. A floor load supporting device comprising a pipe-type turnbuckle body having a nut member irremovably mounted at both ends of a round or square pipe, wherein one end of the pipe-type turnbuckle body has a floor back. A floor receiving member having a connection portion with a member is screwed on, a bottom member having a connection portion with the base member is screwed on the other end, and the nut member has an outer diameter or outer dimension of a pipe into which the nut member is inserted. A flange having a larger outer diameter or outer dimension at an end portion, wherein the nut member is irremovably attached to the end of the pipe, and the nut member is inserted into the end of the pipe, and the pipe of the flange is A floor load support device characterized by being crimped on a portion protruding outward from the upper end of the pipe, and by crimping the end of the pipe on which the flange is crimped to the nut member. 2. An enlarged diameter portion in which a nut member has substantially the same diameter or inner size as an inner diameter or inner size of a pipe to be mounted, and a diameter of the enlarged diameter portion formed integrally with the enlarged diameter portion. Or having a smaller diameter or outer diameter smaller than the outer dimension,
The floor load support according to claim 1, wherein a flange is formed at an end of the reduced diameter portion. 3. The floor load according to claim 1 or 2, wherein the thickness of the flange is such that the diameter of the nut of the nut member does not increase when the flange is crimped to the end of the pipe. Support. 4. A method of manufacturing a floor load support device comprising a pipe-type turnbuckle body having nut members irremovably attached to both ends of a round or square pipe, wherein the pipe end is provided at the end of the pipe. A procedure in which a nut member having an outer diameter or outer dimension flange larger than the diameter or outer dimension at the end thereof is inserted until the flange abuts on the pipe end face, and a portion of the flange projecting outward from the pipe. Crimping the pipe to the pipe, and crimping the pipe to a nut member. 5. An enlarged diameter portion in which a nut member has substantially the same diameter or the same size as an inner diameter or an inner size of a pipe to be mounted, and a diameter of the enlarged diameter portion formed integrally with the enlarged diameter portion. Or having a smaller diameter or outer diameter smaller than the outer dimension,
The method according to claim 4, wherein a flange is formed at an end of the reduced diameter portion. 6. The floor load according to claim 4, wherein the thickness of the flange is such that the diameter of the nut of the nut member does not increase when the flange is crimped to the end of the pipe. Manufacturing method of the support tool.