JPH11293916A - Square tubing tightening device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make square tubing tightening easier for intersecting rod-shaped members by using a square tubing tightening device comprising a first linking portion and a second linking portion formed in one united body which individually connected to two rod-shaped members intersecting each other with a predetermined angle. SOLUTION: A square tubing tightening device 10 for fixing square tubings A, B orthogonal each other for reinforcing a concrete form is made by folding and bending a metal plates and forming a J-shaped portion 20 and a U-shaped portion 30, jointing a right triangle plate member 50 welding thereby reinforcing a coupling portion, adhering a non-slip rubber plate 22 on the rear surface of the J-shaped portion 30 and providing through holes 32a, 32b in the U-shaped portion 30. And the J-shaped portion 20 is fitted to the square tubing A, the U-shaped portion 30 is fitted to the square tubing 30, and a wedge-shaped fastener 40 is inserted to the through holes 32a, 33a, and the lower surface of the square tubing B is tightened and supported. Also, instead of rubber plate 22, a linking pin may be projected out and inserted to a pin hole provided in the square tubing A. By doing this, square tubings perpendicular to each other can be fixed easily.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a square fastener,
In particular, the present invention relates to a square fastener for assembling and fixing the tip of a rod-shaped member.

[0002]

2. Description of the Related Art When a reinforced concrete wall is made at a construction site, a reinforcing bar is assembled at a place where the reinforced concrete wall is to be formed, the reinforced concrete wall is surrounded by a plywood, and then cement is poured into a space surrounded by the plywood.

At this time, in order to make the veneer plate serving as a backing plate withstand the pressure of the poured cement, the veneer plate is reinforced by a horizontal square pipe fixed to the outer surface of the veneer plate by a separator (not shown). ing.

FIG. 20 is a perspective view showing a situation in which a plywood is reinforced by a square pipe.

[0005] A plurality of square pipes are pressed in a horizontal direction from the outer surface of the plywood, and the ends of the square pipes facing each other from a substantially orthogonal direction are crossed at the corners.

Heretofore, in order to assemble and fix the intersecting portion, a vertical square pipe 1, a chain 2, and a turnpackle 3 which are pressed against the intersecting portion from outside have been used.

That is, a vertical square pipe 1 is pressed against the intersection from the outside, and one end of the chain 2 is connected to the middle of the horizontal square pipe adjacent to each other in the vertical direction. One end of the chain 2 is connected to a vertical square pipe near the tip of the square pipe.

The chains 2 are pulled close to each other in the vicinity of the center, and each chain 2 is tightened while each end of the turn pack 3 is hung on each chain 2.

Then, since the vertical square pipe 1 is pressed inward, the intersection of the horizontal square pipes is tightened and fixed.

In the above-described conventional corner tightening work, the vertical square pipe 1 is pressed against the intersection of the horizontal square pipes, and at the same time, the chain 2 is hung to turn the turnpuckle 3. I have to tighten it,
At least about three people were required and it was a large one.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a square fastener capable of easily performing a square tightening operation by one or two persons.

[0011]

In order to achieve the above object, according to the present invention, there is provided a first supporting portion capable of fixing an end of one rod-shaped member, and a first supporting portion fixed to the first supporting portion. And a second support portion connected at an angle and capable of fixing an end of another rod-shaped member.

According to the first aspect of the present invention, the end of one rod-like member extending from one direction is formed at a corner where the tips of the rod-like members supported in a substantially horizontal direction by the separator face each other. The part is fixed to the first support part, and the end of another rod-shaped member extending from another direction is fixed to the second support part connected to the first support part at a predetermined angle.

Therefore, when a desired region is surrounded by a plurality of rod-shaped members, the rod-shaped members are fixed at each corner by the above-described method, so that the tightening of the chain or the like as in the conventional case is not performed. It can be assembled such that the end of each bar-shaped member does not open outward at the corner.

The rod-shaped members referred to here need only be assembled with each other and can be square-tightened. From the viewpoint that the present invention aims to easily perform the square-tightening work, the rod-shaped members have been described in the above-mentioned prior art. It is not limited to a square pipe, but may be a round pipe or the like, and can be appropriately changed.

[0015] The support portion only needs to be capable of fixing the end portion of the rod-shaped member, and may simply be an assembly of the end portion of the rod-shaped member, or may be assembled while engaging each other by an engagement structure. It may be.

As an example of the latter configuration, the invention according to claim 2 is the invention according to claim 1, wherein the support portion is configured such that the support portion is capable of engaging with the rod-shaped member. It has a structure having a structure.

In the invention according to claim 2 configured as described above, the support portion is assembled by engaging and recessing the rod-shaped member by an uneven engagement structure.

The concave-convex engagement structure may be formed between the first support portion and the second support portion, or may be formed at each support portion. .

The first support portion and the second support portion are fixed to the second support portion while intersecting another bar-shaped member with the one bar-shaped member. For supporting the member, it may be fixed to the first support portion, when formed between the first support portion and the second support portion, for example, in one rod-shaped member A convex structure is formed on the lower surface of the end portion, a concave structure is formed on the upper surface of another rod-shaped member, and each bar-shaped member is assembled while facing the convex structure and the concave structure to perform corner tightening. May be.

On the other hand, when formed by each support portion,
It is also possible to form a convex structure on the support portion, form a concave structure on the rod-shaped member that can be engaged with the convex structure, and assemble the convex structure and the concave structure while facing each other.

The first support portion and the second support portion only need to be capable of fixing the rod-shaped member, and may be fixed by tightening a ring body through which the rod-shaped member is inserted with a bolt. Alternatively, the opening may be sealed and fixed after the rod-shaped member is inserted therethrough.

[0022] As an example of the structure in the latter case, the invention according to claim 3 is the invention according to claim 1 or 2, wherein the second support portion is provided with the other support member. U which is open at one end so that the rod-shaped member can be inserted
The rod-shaped member is fixed by inserting a wedge piece through both wings.

[0023] In the invention according to claim 3 configured as described above, the other rod-shaped member is inserted into the second support portion formed in a substantially U-shape with one opening, and the second support portion is inserted through the opening of both wing portions. When the wedge piece is inserted from the narrow side into the through hole formed in the above, another rod-shaped member is pressed against the base side of the second support portion and fixed as the width of the wedge piece gradually increases.

The first support and the second support may be connected at a predetermined angle, and may be connected while being fixed at a predetermined angle.
It may be connected so that the angle can be changed.

As an example of the structure in the former case, the invention according to claim 4 is the invention according to claim 3, wherein the first support portion has one rod-shaped member inserted from one side. And the second support portion is oriented in a direction substantially orthogonal to the first support portion, and faces in the direction of inserting the rod-shaped member. It is formed in a substantially U-shape that is open, and has a configuration in which through holes are formed in both wing pieces so that wedge pieces can be inserted.

In the invention according to claim 4 configured as described above, the first support portion formed in a substantially J-shape includes:
One rod-shaped member is inserted from one side and engaged, and the second support portion formed in a substantially U-shape while being oriented in a direction substantially orthogonal to the first support portion inserts the rod-shaped member. Another rod-shaped member is inserted from the opening facing in the direction in which the bar-shaped member is to be moved. Then, the wedge pieces are inserted into the through holes formed in the both wing pieces.

For example, assuming that a square pipe is inserted as a rod-shaped member into each of the first support portion and the second support portion, the square fastening is performed as follows. Here, approximately J
Each piece of the first support portion formed in a character shape is referred to as a first piece, a second piece, and a third piece from the side connected to the second support portion.

When the length of the first piece is shorter than the width of the one bar-shaped member, when the one bar-shaped member is inserted through the first support portion and one side surface is brought into contact with the second piece, Is protruded from the first support portion toward the second support portion.

Accordingly, the opposite side surface can be brought into contact with one side surface of another rod-shaped member inserted through the second support portion. At this time, since one side surface of the other bar-shaped member is separated from the base piece of the second support portion, the other bar-shaped member can be pressed against the one bar-shaped member.

Here, when the wedge piece is inserted through the second support portion, one side surface of the other rod-shaped member is pushed toward the base of the second support portion as the width of the wedge piece gradually increases.

Then, since one side surface of the other bar-shaped member is pressed against the opposite side surface of the one bar-shaped member, one side surface of the one bar-shaped member is pressed against the second piece of the first support, and each bar-shaped member is pressed. Are fixed to the respective supports.

In this sense, the length of the first piece is important. However, if the length is too long, the length may be adjusted by flicking the spacer or making the spacer double.

The first support portion may have an additional structure so as to reliably support the one rod-shaped member.

As an example of the configuration in this case, the invention according to claim 5 is the invention according to claim 4, wherein the first support portion is affixed to a substantially J-shaped inner surface. It is configured to have a non-slip member.

According to the fifth aspect of the present invention, the one rod-shaped member is brought into contact with the non-slip member attached to the substantially J-shaped inner surface to prevent the rod-shaped member from slipping. To prevent. Here, the inner side surface means a portion corresponding to the inside of the curved portion in J.

The non-slip member only needs to be able to prevent the one bar-shaped member from slipping, and may be a resin material such as a rubber plate. Further, a groove having a shape capable of preventing slip may be added to the surface of the resin material.

The first support portion and the second support portion may be assembled by supporting one rod-shaped member, or may be assembled by supporting a plurality of rod-shaped members. Is also good.

As an example of the structure in the latter case, the invention according to claim 6 is the invention according to any one of claims 1 to 5, wherein each of the support portions has a plurality of rod-shaped members. The structure is such that the member can be supported.

In the invention according to claim 6 configured as described above, each of the support portions supports a plurality of rod-shaped members.

The rod-shaped members supported by the support portions may be assembled alternately, or the rod-shaped members supported by the support portions may be assembled together.

The first support portion and the second support portion need only be connected to each other, and may be formed integrally during processing, or may be separately formed and connected. It may be something.

As an example of the configuration in the former case, the invention according to claim 7 is the invention according to any one of claims 1 to 6, wherein the first supporting portion and the second The support portion is formed by bending a plate material.

In the invention according to claim 7 configured as described above, the plate material is bent to form the first support portion and the second support portion.

The above-mentioned plate material may have a reinforcing structure in advance, or may have no such structure.

As an example of the structure in the latter case, the invention according to claim 8 is the invention according to claim 7, wherein the first support portion and the second support portion are T-shaped. Both ends of the upper side of the formed plate material are bent in the same direction, and the vertical piece is bent so as to be bent to the opposite side while being bent back to the opposite side.

According to the eighth aspect of the present invention, both ends of the upper side of the T-shaped plate are bent in the same direction, and the tip is turned back while the vertical piece is turned to the opposite side. The first support part and the second support part are formed by bending.

At this time, one rod-shaped member is inserted into the first support portion obtained by bending both ends of the upper side in the same direction, and the tip is bent so that the vertical piece is folded back to the opposite side while the vertical piece is folded back to the opposite side. Another rod-shaped member is inserted through the obtained second support portion, and each rod-shaped member is assembled.

As described above, when the first support portion and the second support portion are integrally formed, it is possible to easily process the plate material by bending or the like. From the viewpoint that it is intended to easily perform corner tightening work by assembling the rod-shaped member to the part and the second support part, these first support part and the second support part are necessarily formed integrally. It is not necessary and may be configured separately.

[0049] As an example of the configuration in this case, the invention according to claim 9 is the invention according to claim 1 or 2, wherein the first support portion is formed of the one rod-shaped member. A notch is formed in a substantially downward U-shape having a bottom wall and a side wall so that the member can be inserted, and the middle portion of the bottom wall has a notch enough to allow the other rod-shaped member to be inserted into the adjacent side wall. A through-hole through which the wedge piece can be inserted through both side walls while forming a hole is formed, and the second support portion is within the width of the bottom wall and swells upward at the central portion. The bent portion is formed from a bent plate piece capable of pressing the upper portion of another bar-shaped member with the bulging portion, and the second supporting portion is formed with respect to the cutout hole of the first supporting portion. With the swollen part of the rod inserted from below, While inserting the one bar-shaped member from the lower side of the second support portion while inserting the one bar-shaped member to the other bar-shaped member previously inserted. It is configured to be fixed by the wedge piece so as to press it.

According to the ninth aspect of the present invention, the first support portion is formed in a substantially downward U-shape having a bottom wall and a side wall so that one rod-shaped member can be inserted therethrough. For the notch hole formed to the extent that another rod-shaped member can be inserted through the side wall adjacent to the middle of the bottom wall,
It was formed from a bent plate piece that was within the width of the bottom wall and bent so as to bulge the central portion upward while pressing the upper portion of the other bar-shaped member at the bulged portion. While inserting the other bar-shaped member through the swelling portion of the second support portion from the lower side while inserting the swelling portion of the second support portion from below, the one bar-shaped member is inserted from below the second support portion. Thereafter, wedge pieces are inserted into through holes formed in both side walls so as to press one inserted rod-shaped member against the other inserted rod-shaped member, and fix the rod-shaped member.

Therefore, when one rod-shaped member is fixed to the first support by the wedge piece, the other rod-shaped member is fixed to the bulging portion of the second support by this one rod-shaped member. Are assembled while crossing each other.

[0052]

As described above, according to the present invention, it is possible to provide a square fastener capable of easily performing a square fastening operation by one or two persons.

Further, according to the invention of claim 2,
The rod-shaped member can be prevented from moving in the extending direction and falling out of the square fastener.

Further, according to the invention of claim 3,
The rod-shaped member can be easily fixed simply by inserting the wedge piece.

Further, according to the invention of claim 4,
When fixing the other rod-shaped member to the second support part with a wedge piece,
At the same time, one rod-shaped member can be fixed to the first support portion by the other rod-shaped member.

Further, according to the invention of claim 5,
It is possible to prevent the rod-shaped member from slipping on the support portion.

Further, according to the invention of claim 6,
When strength is required more than usual, a plurality of rod members can be assembled to each support.

Further, according to the invention of claim 7,
It can be formed by bending a plate material.

Further, according to the invention of claim 8,
It can be formed by easy processing.

Further, according to the ninth aspect of the present invention,
Since each support part supports each bar-shaped member from four directions, the strength of the corner tightening part can be increased.

[0061]

Embodiments of the present invention will be described below with reference to the drawings. <First Embodiment> FIG. 1 is a perspective view showing a square fastener and a square pipe before assembly according to a first embodiment of the present invention. For the sake of simplicity of explanation, the left front is referred to as the front and the right front is referred to as the right for convenience.

The square fitting 10 has a J-shaped portion 20 opened from below so that the square pipe A can be inserted therethrough, and is connected to the lower end of the J-shaped portion 20 and connects the square pipe B from below the square pipe A. A U-shaped part 30 which is orthogonally opened so as to be able to be inserted. The square pipe A is inserted through the J-shaped part 20 from below while projecting the right end, and the corner is formed from below the square pipe A while projecting the front end. Insert the pipe B.

The J-shaped part 20 is formed in a substantially U-shaped cross section with the opening directed downward, and the square pipe A is inserted from below.

The U-shaped portion 30 includes a base piece 31 disposed on a horizontal plane, and wing pieces 32 and 33 extending downward at right angles from both left and right sides of the base piece 31. The square pipe B is inserted from below the opening formed therebetween, and the base piece 31 is inserted.
To the underside of.

At this time, the square pipe B crosses the front end from below of the square pipe A inserted through the J-shaped
The upper surface of the square pipe B supports the lower surface of the square pipe A at this intersection because it is inserted into the character-shaped portion 30.

Under the respective wing pieces 32, 33, through holes 32a, 33a are formed at respective facing positions. As shown in FIG. 2, when the square pipe B is inserted into the U-shaped portion 30, When the wedge-shaped fastener 40 is inserted from the through hole 32a to the through hole 33a through the opening, the lower surface of the square pipe B is supported by the fastener 40.

The back of the J-shaped part 20 and the U-shaped part 30
A plate member 50 shaped into a substantially right triangle is welded between the upper surface of the base piece 31 and the J-shaped part 20 and the U-shaped part 3.
The connecting portion between 0 is reinforced.

Therefore, the end J of the square pipe A is assembled.
In this sense, the U-shaped portion 20 constitutes the first support portion according to the present invention, and the U-shaped portion 30 in which the end of the square pipe B is orthogonally attached to the square pipe A is used in this sense. It constitutes the second support part according to the invention.

In the present embodiment, the ends of the square pipes A and B are crossed in order to prevent the square pipes A and B from falling off from the square fitting 10, but if the drop-off can be prevented. It is not limited to such a configuration.

More specifically, as shown in FIG. 3, an engagement pin 21 is projected downward from the inner surface of the J-shaped portion 20, and the engagement pin 21 is provided on the upper end of the square pipe A. A pin hole 21a that can be inserted is opened. And the J-shaped part 20
When the square pipe A is inserted from below, the pin hole 21a
The engaging pin 21 is inserted into the
The lower surface is supported by a square pipe B inserted into the character-shaped portion 30. Then, the square pipe A cannot move in the left-right direction due to the engagement of the engagement pins 21.

As another example, a flange is formed at the right end of the square pipe A as shown in FIG. Then, as in the case described above, when the lower surface is supported by the square pipe B inserted into the U-shaped portion 30, even if the square pipe A tries to come out to the left, this flange is on the right side of the J-shaped portion 20. Locked on the surface.

A rubber plate 22 is provided on the inner surface of the J-shaped portion 20 so that the inserted square pipe A does not slide in the left-right direction.
Is affixed.

In the present embodiment, the rubber plate 22 is attached, but it is sufficient that the square pipe A can be prevented from slipping, and the invention is not limited to the rubber plate. Therefore, a member in which a groove is formed so as to prevent slippage may be attached, or a resin material other than rubber may be molded. In addition, since the present invention is not limited to the case where the separate member is attached, the J-shaped portion may have a non-slip uneven shape.

These non-slip members may be attached not only to the J-shaped portion 20 but also to the inner surface of the U-shaped portion 30 as shown in FIG. It is also possible to stick on the surface.

The square metal fitting 10 is assembled with two square pipes A and B crossing each other, but it is not always necessary to cross each square pipe, and as shown in FIG. It is also possible to assemble the two square pipes B and C while orienting them.

Note that the assembled state shown in the figure is only an example when a plurality of square pipes cross each other from each direction. For this reason, the number of square pipes assembled from each direction can be changed as appropriate.

The square fastener 10 is formed by bending a metal T-shaped plate as shown in FIG. 7, and as described above, the back of the J-shaped part 20 and the base of the U-shaped part 30. The plate member 50 is reinforced between the upper surface of the piece 31 and the upper surface.

In the present embodiment, the sheet is reinforced by the plate member 50 after bending, but as shown in FIG.
It is also possible to shape the reinforcing structure before bending. Note that, although the reinforcing structure is provided at two places in the same drawing, this is merely an example in the case where the reinforcing structure is provided, and therefore, the reinforcing structure can be formed at one place or at three or more places.

Here, the procedure when the operator performs the corner tightening operation using the corner fastener 10 will be described. The operator encloses the desired area with plywood and applies an appropriate number of square pipes in the vertical direction. Then, the square pipe A and the square pipe B are assembled from the outer surfaces of the plywood and the square pipe.

First, the tip of the square pipe A is inserted through the J-shaped part 20 from below on the outer surface of the plywood, and the tip of the square pipe B is inserted from below into the U-shaped part 30 while crossing the tip of the square pipe A. Insert it. Then, the fastener 40 is attached to the through holes 32a and 33a.

Then, the square pipe A is assembled to the J-shaped part 20 by the inner surface of the J-shaped part 20 and the upper surface of the square pipe B, and the square pipe B is connected to the inner surface of the U-shaped part 30 by the fastener. 40 is assembled to the U-shaped part 30.

By performing the same corner tightening work at each corner, a square pipe is assembled in the horizontal direction, and a structure can withstand even if pressure is applied to the plywood from within the above area.

<Second Embodiment> FIG. 9 is a front view showing the configuration of a corner fitting according to a second embodiment of the present invention.

The square fitting 60 includes a first U-shaped portion 61 opened so that a square pipe can be inserted from above, and a first U-shaped portion 6.
And a second U-shaped portion 62 that is connected to the lower surface of the first member while being oriented in the orthogonal direction and that is opened so that a square pipe can be inserted from below. The wing pieces of the first U-shaped portion 61 and the second U-shaped portion 62 have through holes 61a, 6 through which fasteners 63, 64 can be inserted, as in the first embodiment.
2a is formed.

With this configuration, as shown in FIG.
After the square pipe D is inserted through the first U-shaped part 61 from above, the fastener 63 supports the upper surface of the square pipe D, and the second U-shaped part 62 is inserted through the square pipe E from below. When the lower surface of the square pipe E is supported by the fastener 64,
Square pipes D and E are assembled in the orthogonal direction.

At this time, the first U-shaped part 61 and the second U-shaped part 62 do not necessarily need to be connected in the orthogonal direction.
For example, as shown in FIG. 11, when a hexagonal region is formed by a square pipe using six corner fittings 60 as shown in FIG. 11, as shown in FIG. It is also possible to connect the U-shaped portion 62 while crossing it in the direction of 120 degrees.

Therefore, the first U-shaped part 61 to which the end of the square pipe D is assembled constitutes the first support part according to the present invention in this sense, and the end of the square pipe E is connected to the square pipe D. In this sense, the second U-shaped portion 62 that is assembled while being orthogonal to each other constitutes a second support portion according to the present invention.

<Third Embodiment> FIG. 13 is a front view showing a configuration of a corner fitting according to a third embodiment of the present invention.

The square fitting 70 includes a pair of ring portions 71 and 72 through which a square pipe can be inserted, and a connecting portion 73 that connects the ring portions 71 and 72 so as to be rotatable with each other, as shown in FIG. The square pipes F and G are inserted into the ring portions 71 and 72 and connected.

Each of the ring portions 71 and 72 has a bolt 71a,
It has a substantially rectangular shape having an opening that can be tightened by 72a.
When the 72a is tightened, the square pipes F and G are fixed by narrowing the interval between the openings.

The connecting portion 73 has a ring 71 at each end.
The square pipes F and G fixed to the respective ring portions 71 and 72 are connected at a desired angle.

For example, as shown in FIG. 15, when square regions are formed by square pipes using square fasteners 70 at four places, the square pipes are similarly connected by the respective square fasteners 70. Thereby, each square pipe can be made orthogonal.

As shown in FIG. 11, when a hexagonal region is formed by square pipes using the square fittings 70 at six places, the square pipes are similarly connected by the respective square fittings 70. This allows the square pipes to cross each other at 120 degrees.

Accordingly, the ring portion 71 for assembling the end of the square pipe F constitutes the first supporting portion according to the present invention in this sense, and the end of the square pipe G is formed at a predetermined angle with respect to the square pipe F. In this sense, the ring portion 72 assembled while having the above constitutes the second support portion according to the present invention.

<Fourth Embodiment> FIG. 16 is a front view showing the configuration of a corner fitting according to a fourth embodiment of the present invention.

The square fitting 80 includes a first supporting portion 81 having an opening through which a square pipe can be inserted from above, and a first supporting portion 81.
And a second support portion 82 having an opening through which the square pipe can be inserted from the same upper side and which is connected to the right front side.

With this configuration, as shown in FIG.
After the square pipe H is inserted through the first support portion 81, the square pipe I is inserted through the second support portion 82, and crosses the upper surface of the square pipe H.

Then, the square pipe J is inserted through the first support portion 81 and crosses the upper surface of the square pipe I, and the square pipe K is inserted through the second support portion 82 and crosses the upper surface of the square pipe J. Finally, the fastener 83 is attached to the through hole 82a to support the upper surface of the square pipe K.

Therefore, a plurality of square pipes can be assembled alternately. Thus, the square pipes J, H
In this sense, the first support portion 81 for assembling the ends of the square pipes I and K constitutes the first support portion, and the second support portion for assembling the end portions of the square pipes I and K orthogonally to the square pipes J and H. The support portion 82 in this sense constitutes the second support portion according to the present invention.

<Fifth Embodiment> FIG. 18 is a perspective view showing the configuration of a corner fitting according to a fifth embodiment of the present invention.

The square fitting 90 is formed in a downward U-shape having a bottom wall and a side wall so that the square pipe can be inserted, and the square pipe can be inserted into an adjacent side wall in the middle of the bottom wall. Through holes 91b through which the fasteners 93 can be inserted through both side walls while forming notches 91a
The first support body 91 formed with the inner wall is bent within the width of the bottom wall and the central portion is bulged upward so that the upper portion of the square pipe can be pressed by the bulged portion 92a. Second support 9 formed from a bent plate piece
2 is provided.

With this configuration, as shown in FIG.
With the square pipe L inserted through the swelled portion 92a while the swelled portion 92a of the second support 92 is inserted from below into the notch hole 91a of the first support 91, the square pipe M is A fastener 93 is attached to and fixed to the through-hole 91b so that the square pipe M inserted after this is inserted from below the support 92 and pressed against the square pipe L inserted first.

Therefore, the first support 91 to which the end of the square pipe M is assembled constitutes the first support part according to the present invention in this sense, and the end of the square pipe L is perpendicular to the square pipe M. In this sense, the second support body 92 to be assembled while configuring constitutes the second support portion according to the present invention.

As described above, after the end of the square pipe A is inserted through the J-shaped part 20 from below, the end of the square pipe B is inserted into the U-shaped part 30 from below while crossing the end of the square pipe A. Then, since the corner tightening operation can be performed only by attaching the fastener 40 to the through holes 32a and 33a, it can be easily performed by one or two persons.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a configuration of a square fitting according to a first embodiment and a square pipe before assembly.

FIG. 2 is a perspective view showing a square fitting after a square pipe is assembled.

FIG. 3 is a perspective view showing a situation when a square pipe is engaged with an engagement pin protruding from a J-shaped part.

FIG. 4 is a perspective view showing a situation when a square pipe having a flange formed at a tip is assembled to a J-shaped part.

FIG. 5 is a front view showing an assembling state when a rubber plate is attached to an inner surface of a U-shaped portion.

FIG. 6 is a perspective view showing a situation when a plurality of square pipes are assembled to a U-shaped part.

FIG. 7 is a front view showing a T-shaped plate before bending.

FIG. 8 is a front view showing a T-shaped plate member provided with a reinforcing structure.

FIG. 9 is a front view showing a configuration of a corner fitting according to a second embodiment.

FIG. 10 is a front view showing a situation when a square pipe is assembled to the same angle fitting.

FIG. 11 is a schematic diagram showing an example of a region surrounded by a square pipe.

FIG. 12 is a front view showing a configuration of a square fitting according to a modified example and an assembled state of a square pipe.

FIG. 13 is a front view showing a configuration of a corner fitting according to a third embodiment.

FIG. 14 is a front view showing a situation when a square pipe is assembled to the square fitting.

FIG. 15 is a schematic diagram showing another example of a region surrounded by a square pipe.

FIG. 16 is a front view showing a configuration of a corner fitting according to a fourth embodiment.

FIG. 17 is a front view showing a situation when a square pipe is assembled to the same angle fitting.

FIG. 18 is a perspective view showing a configuration of a corner fitting according to a fifth embodiment.

FIG. 19 is a front view showing a situation when a square pipe is assembled to the square fitting.

FIG. 20 is a perspective view showing a corner tightening operation state according to a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Square fastener 20 ... J-shaped part 21 ... Engagement pin 22 ... Rubber plate 21a ... Pin hole 30 ... U-shaped part 32a, 33a ... Through-hole 40 ... Fastener

Claims (9)

[Claims] 1. A first supporting portion capable of fixing an end of one rod-shaped member, and a second supporting member connected to the first supporting portion at a predetermined angle and capable of fixing an end of another rod-shaped member. And a supporting portion. 2. The corner fitting according to claim 1, wherein the support has an uneven engagement structure capable of engaging with the rod-shaped member. 3. The square fastener according to claim 1 or 2, wherein the second support portion is formed in a substantially U-shape with one opening opened so that the other rod-shaped member can be inserted. A wedge piece is inserted through both wings to fix the rod-shaped member. 4. The corner fitting according to claim 3, wherein the first support portion is formed in a substantially J shape into which one rod-shaped member can be inserted and engaged from one side. The support of
A substantially U which is oriented in a direction substantially perpendicular to the first support portion and opens in the direction in which the rod-shaped member is inserted.
A square fastener formed in a shape of a letter and having a through hole formed in both wing pieces so that a wedge piece can be inserted therethrough. 5. The square fastener according to claim 4, wherein the first support has a non-slip member attached to a substantially J-shaped inner surface. 6. The square fastener according to claim 1, wherein the support portion can support a plurality of rod-shaped members. 7. The corner fastener according to claim 1, wherein the first support portion and the second support portion are formed by bending a plate material. And the square fastener. 8. The square fastener according to claim 7, wherein the first support portion and the second support portion are configured so that both ends of an upper side of a T-shaped plate are bent in the same direction, and are vertically extended. A corner fitting formed by bending a piece so that the tip is folded while the piece is folded to the opposite side. 9. The corner fitting according to claim 1, wherein the first support portion has a bottom wall and a side wall so that the one rod-shaped member can be inserted therethrough. A wedge piece is formed by penetrating both side walls while forming a cutout hole which is formed in a downwardly substantially U-shape and which is formed in the middle of the bottom wall so that the other rod-shaped member can be inserted into the adjacent side wall. An insertable through hole is formed, and the second support portion is in the range of the width of the bottom wall and bent at the center portion so as to bulge upward, and another bar-like portion is formed at the bulge portion. The upper part of the member is formed from a bent plate piece that can be pressed, and the other swelling portion of the second support portion is inserted into the cutout hole of the first support portion from the lower side. While inserting the rod-shaped member through the bulging portion, one rod-shaped member is Sumishime fitting, characterized in that fixing by square side other rod-like member the wedge pieces so as to press against the inserted through one of the bar-like member inserted through after this after having allowed inserted first from.