JP2022134629A - Connecting tool of hollow member - Google Patents

Abstract

To provide a connecting tool of a hollow member which can easily connect the hollow member and the other member.SOLUTION: A connecting tool of a hollow member for connecting a connected member to a connecting end part of the long-length hollow member having a sidewall extending in a first direction comprises: a connecting metal fixture main body arranged in a hollow part of the hollow member, and including a first plate part having a first bolt hole and a second plate part connected to the first plate part; a through-bolt inserted into a pair of sidewall-side bolt holes formed at opposing positions of the sidewall, and a first bolt hole at the connecting metal fixture main body; a connecting bolt connected to the second plate part of the connecting metal fixture main body which is arranged in the hollow part at a first end, and inserted into an insertion hole which is formed at the connected member at a second end; and a fastening nut for fastening the connected member to the connecting end part side of the hollow member, and connecting it to the hollow member by being screwed to a second end side of the connecting bolt in a state of being inserted into the insertion hole of the connected member.SELECTED DRAWING: Figure 8

Description

The present invention relates to connectors.

Conventionally, when connecting another steel material to the end of a columnar steel material, these steel materials are welded together, or a plate for connection is welded to the end of one steel material, and this plate and another steel material are welded. A method of fastening with a plurality of bolts is used (Patent Document 1).

JP-A-9-78692

The conventional connection method has the problem that it takes time and effort to weld and fasten a large number of bolts. In addition, when each member is connected by welding, the strength and accuracy may vary depending on the skill of the worker. It was not easy to secure a stable supply.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a connector for a hollow member that enables easy connection between the hollow member and another member.

In order to solve the above problems, the first connector according to the present invention is
A connector for connecting a member to be connected to a connecting end of an elongated hollow member having side walls extending in a first direction,
a first plate portion disposed in a hollow portion formed inside the side wall at the connecting end portion of the hollow member and extending in the first direction and having a first bolt hole; a connecting fitting body including a second plate portion connected and extending in a second direction orthogonal to the first direction;
By being inserted into a pair of side wall side bolt holes formed at positions facing each other across the hollow portion on the connecting end side of the side wall and the first bolt hole in the connecting metal fitting main body, the connecting metal fitting through bolts for fixing the main body to the side wall;
A first end is connected to the second plate portion of the connecting fitting main body arranged in the hollow portion, and a second end opposite to the first end protrudes outside from the connecting end portion. A connecting bolt extending along the first direction, wherein the cover is arranged to extend in the second direction while being directly or indirectly abutted against the connecting end of the hollow member. a connecting bolt inserted into an insertion hole formed in the connecting member;
The connecting bolt is screwed to the second end side of the connecting bolt inserted through the insertion hole of the connecting member, thereby tightening the connecting member to the connecting end side of the hollow member to tighten the hollow member. a fastening nut connected to the
Prepare.

Further, in order to solve the above problems, the second connector according to the present invention is
A connector for connecting an attachment to an elongated hollow member having sidewalls extending in a first direction, comprising:
a base plate disposed in contact with the connecting end of the hollow member;
a first plate portion disposed in a hollow portion formed inside the side wall at the connecting end portion of the hollow member and extending in the first direction and having a first bolt hole; a connecting fitting body including a second plate portion connected and extending in a second direction orthogonal to the first direction;
By being inserted into a pair of side wall side bolt holes formed at positions facing each other across the hollow portion on the connecting end side of the side wall and the first bolt hole in the connecting metal fitting main body, the connecting metal fitting through bolts for fixing the main body to the side wall;
A first end is connected to the second plate portion of the connecting fitting main body arranged in the hollow portion, and a second end opposite to the first end protrudes outside from the connecting end portion. a connecting bolt extending along the first direction, the connecting bolt being inserted into an insertion hole formed in the base plate;
a fastening nut that tightens the base plate to the connection end side of the hollow member by being screwed onto the second end side of the connection bolt that has been inserted through the insertion hole of the base plate;
with
A connecting tool, wherein a portion of the connecting bolt to be connected to the attachment protrudes from the fastening nut and is arranged to stand on the base plate.

The second connector is
a first attachment mounting nut that screws together with the second end of the connecting bolt protruding from the fastening nut;
In a state in which the attachment is adjacent to the second end side of the first attachment mounting nut through the second end side of the connecting bolt through the mounting hole provided through at least a portion of the attachment, a second attachment mounting nut screwed onto the second end side of the connecting bolt and sandwiching the attachment between itself and the first attachment mounting nut;
may be provided.

Also, in order to solve the above problems, the third connector according to the present invention is
A connector for connecting an attachment to an elongated hollow member having sidewalls extending in a first direction, comprising:
a base plate disposed in contact with the connecting end of the hollow member;
a first plate portion disposed in a hollow portion formed inside the side wall at the connecting end portion of the hollow member and extending in the first direction and having a first bolt hole; a connecting fitting body including a second plate portion connected and extending in a second direction orthogonal to the first direction;
By being inserted into a pair of side wall side bolt holes formed at positions facing each other across the hollow portion on the connecting end side of the side wall and the first bolt hole in the connecting metal fitting main body, the connecting metal fitting through bolts for fixing the main body to the side wall;
A first end is connected to the second plate portion of the connecting fitting main body arranged in the hollow portion, and a second end opposite to the first end protrudes outside from the connecting end portion. A connecting bolt extending along the first direction, the second end of which is inserted into an insertion hole formed in the base plate and a mounting hole that penetrates at least a portion of the attachment. a connecting bolt inserted through the
The attachment is screwed to the second end side of the connection bolt inserted through the insertion hole formed in the base plate and the mounting hole of the attachment, thereby connecting the attachment to the connection end portion of the hollow member together with the base plate. a fastening nut that is tightened to the side and connected to the hollow member;
Prepare.

The first to fourth connectors are
The connection bolt
a head provided at the first end;
a shaft portion extending from the head portion toward the second end;
has
The connecting bolt inserts the shaft portion into the second bolt hole provided in the second plate portion of the connecting fitting main body from the side opposite to the connecting end portion of the hollow member. may be connected to the connecting fitting main body.

In the first to fourth connectors, the head of the connection bolt may be polygonal, and at least one side of the polygon may be arranged along the first plate portion of the connector body.

ADVANTAGE OF THE INVENTION According to this invention, the coupling tool of the hollow member which can connect a hollow member and another member easily can be provided.

FIG. 1 is a front view showing a connecting structure in which a hollow member and a second member are connected using a connecting tool according to the first embodiment. FIG. 2 is a side view showing the connection structure according to the first embodiment. FIG. 3 is a bottom view showing the connection structure according to the first embodiment. FIG. 4 is an exploded perspective view of the coupler according to the first embodiment. 5A and 5B are views showing an example of the connecting fitting body 31, FIG. 5A is a front view, FIG. 5B is a top view, FIG. 5C is a bottom view, and FIG. 5D is a side view. It is a diagram. 6 is a front view showing a connecting structure in which a hollow member and a second member are connected using a connecting tool according to Modification 1. FIG. 7 is a bottom view showing a connection structure according to Modification 1. FIG. FIG. 8 is a front view showing a connecting structure in which a hollow member, a second member, and a third member are connected using a connecting tool according to a second embodiment. FIG. 9 is a bottom view showing the connection structure according to the second embodiment. FIG. 10 is a diagram showing the configuration of a deck using the connector according to the present embodiment in the second embodiment. 11A and 11B are diagrams showing a connection structure in which a hollow member and a second member and a third member are connected using a connection tool according to Modification 2. FIG. FIG. 12 is a diagram showing a connecting structure in which a hollow member, a second member, and a third member are connected using a connecting tool according to the third embodiment. FIG. 13 is a perspective view showing the bottom surface, front surface, and side surface of the third member according to the third embodiment. FIG. 14 is a diagram showing a connecting structure in which a hollow member and a tubular attachment are connected using a connector according to the fourth embodiment. FIG. 15 is a plan view of a state in which tubular attachments are connected using a connector according to the fourth embodiment.

<First Embodiment>
BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. The embodiment is an example of the present invention, and the configuration of the present invention is not limited to the following examples.

FIG. 1 is a front view showing a connection structure in which a hollow member 10 and a member to be connected 20 are connected using a connector 30 according to the first embodiment, and FIG. 2 is a side view showing the connection structure according to the first embodiment. Fig. 3
4 is a bottom view showing the connection structure according to the first embodiment, and FIG. 4 is an exploded perspective view of the connection tool 30 according to the first embodiment. In FIGS. 1 to 4, the Y axis is the height direction, the X axis is the left-right direction, and the Z axis is the depth direction. not to be The same applies to subsequent drawings.

The hollow member 10 is a long member having a side wall 11 extending in a first direction (the Y-axis direction in FIG. 1), is surrounded by the side wall 11, and communicates with the outside at least at the end on the first direction side. It is a hollow tube member such as a cylindrical tube or square tube having a hollow portion 12 . The side walls 11 need only have side walls 11 facing each other across the hollow portion 12 so that through bolts, which will be described later, can be provided. It doesn't have to be. For example, the hollow member 10 may be an H-shaped steel having an H-shaped cross section or a C-shaped steel having a C-shaped cross section. That is, in the present embodiment, H-shaped steel and C-shaped steel having a hollow portion between side walls having an H-shaped XZ cross section are also referred to as hollow members. The hollow member 10 of the present embodiment is a square pipe having a square cross section (XZ cross section) as shown in FIG. The hollow member 10 has an opening in which the hollow portion 12 communicates with the outside of the hollow member 10 .

The connected member 20 is a member having a surface that is in contact with one end (connecting end, upper end in FIG. 1 ) 13 of the hollow member 10 on the first direction side and bridges between the side walls 11 at the upper end 13 . The member to be connected 20 of the present embodiment is a C-shaped steel having a C-shaped longitudinal section (XY section) as shown in FIG.

The hollow member 10 and the member to be connected 20 of the present embodiment are made of steel, but the material is not particularly limited as long as it can withstand the fastening force of the connecting tool 30 . The hollow member 10 and the member to be connected 20 may be made of synthetic resin, ceramic, wood, concrete, or the like, for example.

≪Connector≫
The connector 30 has a connector body 31 , through bolts 32 , connecting bolts 33 , and fastening nuts 34 . The connecting fitting main body 31 is arranged in the hollow portion 12 of the hollow member 10 and is provided with a first bolt hole 310 through which the through bolt 32 is passed. 5A is a front view of the connecting metal fitting body 31, FIG. 5B is a top view of the connecting metal fitting main body 31, and FIG. A bottom view of the main body 31 and FIG. 5D is a side view of the connecting fitting main body 31 .

The connecting fitting main body 31 is arranged in the hollow portion 12 formed inside the side wall 11 at the connecting end portion 13 of the hollow member 10, and is a first plate portion extending in the first direction and having a first bolt hole 310. and a second plate portion 311 connected to the first plate portion 312 and extending in a second direction perpendicular to the first direction. The second plate portion 311 is provided with a second bolt hole 313 through which the connecting bolt 33 is passed. As shown in FIG. 1, the connecting fitting main body 31 of the present embodiment is a U-shaped member in which the first plate portion 312 is vertically provided on both side edges of the second plate portion 311 and viewed from the front. Note that this is not the only option, and the connecting fitting body 31 may be L-shaped with the first plate portion 312 provided on one side of the second plate portion 311 .

The through bolt 32 has a male threaded portion 321 and a head portion 322 . The through bolt 32 is in a state in which the male threaded portion 321 is passed through the side wall side bolt hole 111 and the first bolt hole 310 of the connecting fitting main body 31 provided at positions facing each other with the hollow portion 12 of the side wall 11 interposed therebetween. A nut 323 is screwed from the end of the male screw portion 321 opposite to the head portion 322 . The through bolt 32 is inserted into the side wall side bolt hole 111 of the side wall 11 and the first bolt hole 310 of the connecting metal fitting main body 31 , thereby fixing the connecting metal fitting main body 31 to the side wall 11 .

The connecting bolt 33 has a first end connected to the connecting fitting main body 31 and a second end opposite to the first end extending along the first direction, extending from the connecting end portion 13 of the hollow member 10 . It is arranged so as to protrude to the outside and is inserted into the insertion hole 21 of the member to be connected 20 . The connecting bolt 33 of this embodiment is a bolt, and has a head portion 331 provided at the first end and a shaft portion 332 extending from the head portion 331 toward the second end side. The connecting bolt 33 has a shaft portion 332 passing through the second bolt hole 313 from the lower side of the second plate portion 311 (the side opposite to the connecting end portion) with respect to the second plate portion 311 of the connecting metal fitting main body 31, and the head portion A surface 334 on the first direction side of the portion projecting in the radial direction (direction orthogonal to the first direction) from the shaft portion 332 of 331 abuts against the lower surface of the second plate portion 311 to prevent it from slipping off, thereby forming the main body of the connecting fitting. 31. The connection between the connecting bolt 33 and the connecting fitting main body 31 is not limited to this. For example, the connection bolt 33 may be a full screw without a head, and instead of the head 331 , a nut may be screwed onto the first end to connect to the connection fitting main body 31 . Moreover, the connection bolt 33 may be configured such that the rod-shaped connection bolt 33 is connected to the connection fitting main body 31 by welding. Alternatively, the connection bolt 33 and the connection fitting main body 31 may be integrally formed.

A head portion 331 of the connecting bolt 33 has a polygonal shape (a hexagonal shape in the example of FIG. 3) when viewed in the first direction from the lower end side. On the other hand, the second bolt hole 313 of the connecting fitting main body 31 through which the connecting bolt 33 is passed is provided eccentrically with respect to the center of the second plate portion 311 as shown in FIG. When the shaft portion 332 of the connecting bolt 33 is passed through the second bolt hole 313, at least one side 333 of the head portion 331 of the connecting bolt 33 is aligned with the first plate portion 312 of the connecting fitting main body 31 as shown in FIG. along the inner surface 314 of the . As a result, the connection bolt 33 is prevented from rotating in the first direction around the central axis.

The fastening nut 34 is screwed into a male threaded portion provided at least on the second end side of the shaft portion 332 of the connecting bolt 33 so as to pass through the to-be-connected member 20 . be tightened.

≪Connection structure≫
In this embodiment, the connection structure is configured by connecting the hollow member 10 and the connected member 20 with the connecting tool 30 . First, the connecting metal fitting main body 31 and the connecting bolt 33 are connected by passing the second end of the connecting bolt 33 through the second bolt hole 313 of the connecting metal fitting main body 31 . The connecting fitting main body 31 connected to the connecting bolt 33 is inserted into the hollow portion 12 of the hollow member 10 so that the first bolt hole 310 of the connecting fitting main body 31 and the side wall side bolt hole 111 of the hollow member 10 are coaxial. Place it so that it is located in By inserting the through bolt 32 into the first bolt hole 310 of the connecting metal fitting main body 31 and the side wall side bolt hole 111 of the hollow member 10 , the connecting metal main body 31 is fixed to the side wall 11 . At this time, the connecting bolt 33 is arranged so that the second end protrudes outward from the connecting end portion 13 of the hollow member 10 . The second end of the connecting bolt 33 is passed through the insertion hole 21 of the member to be connected 20, the member to be connected 20 is abutted against the connecting end portion 13 of the hollow member 10, and the member to be connected 20 extends in the second direction, It is arranged so as to span between the side walls 11 . The member to be connected 20 may directly contact the connecting end portion 13 of the hollow member 10, or may be indirectly abutted via a member such as a base plate or packing, which will be described later. Then, a fastening nut 34 is screwed to the second end side of the connecting bolt 33 and tightened to the connected member 20 side. At this time, the connecting bolt 33 has a head portion 331 at the lower end that is stopped by the connecting fitting main body 31 , and the connecting fitting main body 31 is fixed to the side wall 11 by the through bolt 32 . That is, the connection bolt 33 is fixed to the side wall 11 . Therefore, when the fastening nut 34 is tightened to the connecting bolt 33 toward the member to be connected 20 , the member to be connected 20 is pressed against the connecting end portion 13 of the hollow member 10 . In other words, the force that tightens the fastening nut 34 pulls up the second end of the connecting bolt 33 and tensions the connecting bolt 33 with the first end, and the fastening nut 34 pulls the connected member 20 to the hollow member 10 . is tightened to the connecting end 13 of the . Thereby, the connector 30 connects the hollow member 10 and the member 20 to be connected.

<<Effects of the embodiment>>
As described above, according to this embodiment, the hollow member 10 and the member to be connected 20 can be easily connected without welding. In particular, since bolts and the like are tightened outside the hollow member 10, connection work can be easily performed. In the case of threaded connections such as bolts, for example, if a specified bolt is used and tightened with a specified torque, it is easy to obtain the strength as designed based on the diameter of the bolt, etc., and the joining state can be varied like welding. seldom come out. In other words, it is possible to obtain the desired result and maintain the appropriate quality during the connection regardless of the skill and proficiency of the operator who performs the connection work. In addition, in the present embodiment, the hollow member 10 and the member to be connected 20 can be connected by screw connection at two locations between the through bolt 32 and the fastening nut 34, and the time and effort required for connection can be reduced. In addition, since the hollow member 10 and the member to be connected 20 are connected by screw connection, it is easy to disassemble during maintenance or disposal.

Furthermore, in the connecting device 30 of the present embodiment, when the connecting bolt 33 is passed through the second bolt hole 313 of the connecting metal main body 31 , one side 333 of the head 331 of the connecting bolt 33 is aligned with the inner surface of the connecting metal main body 31 . 314 to prevent the connecting bolt 33 from rotating. As a result, there is no need to hold down the connecting bolt 33 with a tool or the like to prevent the connecting bolt 33 from rotating at the time of connection, and workability can be improved.

<Modification 1>
FIG. 6 is a front view showing a connection structure in which the hollow member 10 and the connected member 20A are connected using a connector 30A according to Modification 1, and FIG. 7 is a bottom view showing the connection structure according to Modification 1. . This modified example shows an example of connecting a hollow member 10A, which is a square pipe, and a connected member 20A, which is H-shaped steel. A connecting device 30A according to this modification differs from the connecting device 30 according to the above-described first embodiment in that a plurality of through bolts 32, connecting bolts 33, and fastening nuts 34 are provided. Other configurations are the same as those of the above-described first embodiment, and the same elements are denoted by the same reference numerals, and repeated explanations are omitted.

30 A of connection tools which concern on this modification have 31 A of connection metal fitting main bodies, two through bolts 32, four connection bolts 33, and four nuts 34 for fastening.

Four second bolt holes 313 through which the connecting bolts 33 pass are provided in the second plate portion 311 of the connecting fitting main body 31A, and two first bolt holes 310 are provided in the first plate portions 312 on both sides. ing. Similarly, the side walls 11 facing the second direction of the hollow member 10A are provided with two through-holes 111, four in total.

The two through-bolts 32 are respectively inserted into the side wall side bolt holes 111 of the side wall 11 and the first bolt holes 310 of the connecting metal fitting body 31 , thereby fixing the connecting metal fitting main body 31</b>A to the side wall 11 .

The four connecting bolts 33 are provided so as to penetrate the second plate portion 311 of the connecting fitting main body 31 from below through the second bolt holes 313 and the insertion holes 21 of the connected member 20A. Then, the four fastening nuts 34 are screwed to the threaded portions on the upper end side of the connecting bolts 33 and are tightened to the connected member 20 side.

As a result, the hollow member 10A and the connected member 20A can be easily connected to each other by screw connection in the connector 30A of this modified example as well as in the above-described first embodiment. Further, the connector 30A of this modified example can obtain the required strength by appropriately setting the through bolt 32, the connecting bolt 33, and the fastening nut 34. FIG.

<Second embodiment>
FIG. 8 is a front view showing a connecting structure in which a hollow member 10B and an attachment 40 are connected via a connecting tool 30B according to the second embodiment, and FIG. 9 is a bottom view showing the connecting structure according to the second embodiment. . A connecting tool 30B according to the present embodiment differs from the connecting tool 30 according to the first embodiment described above mainly in that the base plate 20B is provided and the attachment 40 is connected to the upper part of the connecting bolt 33. there is The same elements as those of the first embodiment described above are given the same reference numerals, and the repetitive description thereof is omitted.

The hollow member 10B is a hollow member such as a cylinder or a rectangular tube, and is a columnar member extending in the first direction. The hollow member 10B of this embodiment is a substantially cylindrical pile, and at least the lower end (tip) is buried in the ground.

The base plate 20B is a plate-like member having a surface 22 that is in contact with the upper end 13 of the hollow member 10B on the first direction side and bridges between the side walls 11 facing the second direction at the upper end 13 . The base plate 20B of the present embodiment has a circular planar shape (external shape on the XY plane) as shown in FIG. 9, and the diameter of this circle is larger than the diameter of the hollow member 10B, so that it is cylindrical. It is attached so as to block the upper end opening of the hollow member 10B.

The attachment 40 is a member having a through hole 41 for connecting with the connecting bolt 33, and is a joist receiving member for laterally extending the joist 50 in this embodiment. The attachment 40 of this embodiment is made of steel, but the material is not particularly limited. The attachment 40 may be, for example, synthetic resin, ceramic, wood, or the like.

The connecting metal fitting main body 31 is arranged in the hollow portion 12 of the hollow member 10B, and the through bolt 32 is inserted into the side wall side bolt hole 111 of the side wall 11 and the first bolt hole 310 of the connecting metal main body 31, whereby the side wall is 11.

The connecting bolt 33 is provided through the second plate portion 311 of the connecting fitting main body 31 from below through the second bolt hole 313 and the insertion hole 21 of the base plate 20B. Further, the fastening nut 34 is screwed onto the threaded portion on the upper end side of the connecting bolt 33 and is tightened to the base plate 20B side to fasten the hollow member 10 and the base plate 20B.

After tightening the fastening nut 34, the first attachment mounting nut 352 is screwed onto the top of the connecting bolt 33, the upper end of the connecting bolt 33 is passed through the through hole 41 of the attachment 40, and the attachment 40 is attached to the first attachment. It is placed on the nut 352 for use. Then, the second attachment mounting nut 351 is screwed from the upper end of the connecting bolt 33 and tightened to the attachment 40 side, and the attachment 40 is secured by the second attachment mounting nut 351 and the first attachment mounting nut 352. , and connects the attachment 40 and the connecting bolt 33 .

FIG. 10 is a diagram showing the configuration of a deck using the connector 30B according to this embodiment. In the example of FIG. 10, a plurality of hollow members (piles) 10 are driven at predetermined intervals in the X-axis direction to form a row of the hollow members 10, and the row of the hollow members 10 is arranged in the Z-axis direction at a predetermined distance. A plurality of rows are formed with an interval of . That is, the hollow members 10 are placed in a matrix.

Next, the base plate 20B is placed on the upper end of each hollow member 10, and the base plate 20B is attached to the hollow members 10B with the fastening nuts 34 as described above. As a result, the upper portion of the connecting bolt 33 penetrating through the base plate 20B is erected with respect to the base plate 20B. The attachment 40 , which is a joist receiving member, is connected to the upper portion of the connection bolt 33 by means of attachment mounting nuts 351 and 352 .

The joists 50 are laid across the attachments 40 arranged in the X direction and fixed to the attachments 40 with screws 51 (FIG. 8). The height of the attachment 40 can be adjusted by vertically changing the tightening position of the attachment mounting nuts 351 and 352 along the connecting bolt 33. Therefore, the height of the ground GL and the embedding depth of the hollow member 10B can be adjusted. By absorbing the error, the attachment 40 can receive the joist 50 at a predetermined height.

A plurality of joists 50 are arranged at predetermined intervals in the Z direction. A floor material (deck material) 60 is laid over these joists 50 and fixed to the joists 50 .

As described above, the connecting member 30B according to the present embodiment can easily connect the attachment 40, which is a joist receiving member, to the hollow member 10B driven into the ground GL, thereby improving the workability when installing the deck. can be made

<Modification 2>
FIG. 11 is a diagram showing a connection structure in which a hollow member 10B, a base plate 20B, and an attachment 40A are connected using a connector 30C according to Modification 2. FIG. This modification differs from the second embodiment in that the attachment 40A is an eye nut. The rest of the configuration is the same as that of the above-described second embodiment, and the same reference numerals are given to the same elements, and the repetitive description will be omitted.

30 C of connection tools which concern on this modification make the upper end of the connection bolt 33 screw together the eye nut as attachment 40A in the state which fastened the base plate 20B with the hollow member 10B with the fastening nut 34. FIG. As a result, the connector 30C according to the present modification can easily connect the hollow member 10B driven into the ground GL and the eye nut (attachment 40A), thereby facilitating fixing of the eye nut to the ground GL.

<Third embodiment>
FIG. 12 is a diagram showing a connection structure in which the hollow member 10B, the base plate 20B, and the attachment 40A are connected using the connector 30D according to the third embodiment. FIG. 13 is a perspective view showing the bottom, front and side surfaces of the attachment 40A. This embodiment differs from the above-described first or second embodiment in that an attachment 40A is used as an attachment that serves as a base for erecting a column. Other configurations are the same as those of the above-described embodiment, and the same elements are denoted by the same reference numerals, and the repetitive description is omitted.

The attachment 40A of this embodiment has a cylindrical peripheral wall 45 and a bottom portion 42 which is orthogonal to the central axis 49 of the cylinder and defines the inner space of the cylinder from the outside at the lower end of the peripheral wall 45. there is The bottom portion 42 is provided with an elongated hole 43 that penetrates in the first direction and is elongated in a direction orthogonal to the first direction (the Z-axis direction in FIG. 13).

In the connecting device 30D according to the present embodiment, the connecting bolt 33 has the shaft portion 332 passed through the second bolt hole 313 of the connecting metal fitting main body 31 to connect with the connecting metal main body 31, and the connecting metal main body 31 is connected to the hollow member 10B. The through bolt 32 is inserted into the side wall side bolt hole 111 of the side wall 11 and the first bolt hole 310 of the connecting metal fitting main body 31 , and the connecting metal main body 31 and the connecting bolt 33 are inserted into the side wall 11 . fixed against At this time, the upper portion of the connecting bolt 33 is provided so as to protrude upward (first direction) from the upper opening of the hollow member 10B. In this state, the base plate 20B is placed on the upper end 13 of the side wall 11 through the upper portion of the connecting bolt 33 through the insertion hole 23, and the attachment 40A is placed on the base plate 20B through the elongated hole 43 through the upper portion of the connecting bolt 33. A fastening nut 34 is screwed onto the upper portion of the connecting bolt 33 to fasten the base plate 20B and the attachment 40A to the hollow member 10B.

By inserting the lower end of the post (not shown) into the inner space 44 from the upper opening of the attachment 40A and fixing the post to the attachment 40A, the connection structure (hollow member 10B, connector 30D, and attachment 40A) can be used as the base of the stanchion.

As described above, according to the present embodiment, the attachment 40A can be easily connected to the hollow member 10B driven as a pile, so that workability in erecting the support can be improved.

In addition, since the attachment 40A of the present embodiment is connected to the connecting bolt 33 through the elongated hole 43, by changing the position through which the connecting bolt 33 is passed in the elongated hole 43, the attachment 40A can be attached to the center of the hollow member 10B. Attachment 40A can be eccentric. That is, even if there is an error between the position where the hollow member 10 is cast and the position where the support is erected on the XZ plane, the mounting position of the attachment 40A can be adjusted according to this error, and the support can be erected with high accuracy. be able to.

<Fourth embodiment>
FIG. 14 is a diagram showing a connection structure in which a hollow member 10B and a tubular attachment 40B are connected using a connector 30E according to the fourth embodiment, and FIG. It is a top view of the state which connected the attachment 40B. This modification differs from the third embodiment in the configuration of connecting the tubular attachment 40B to the hollow member 10B. The rest of the configuration is the same as that of the above-described third embodiment, and the same elements are denoted by the same reference numerals, and the repetitive description is omitted.

The tubular attachment 40B is a circular tubular member with no bottom, and has a pair of base-side bolt holes 451 on the connecting end side of the peripheral wall 45 that contacts the base plate 20B. The base-side bolt holes 451 are formed at positions facing each other in the second direction with the hollow portion 44 interposed therebetween in the connecting end-side peripheral wall 45 of the tubular attachment 40B. The tubular attachment 40B has a shape in which the bottom portion 42 is omitted and a base-side bolt hole 451 is provided, unlike the attachment 40A of the third embodiment.

The connector 30E of this embodiment further includes a base hardware 51 and a base-side bolt 52 as compared with the connector 30D of the third embodiment.

The base hardware 51 includes a first mounting plate portion 511 extending in a second direction perpendicular to the first direction, and a second mounting plate portion 512 connected to both sides of the first mounting plate portion 511 and extending in the first direction. and The base hardware 51 is arranged so that the lower surface of the first mounting plate portion 511 directly or indirectly contacts the surface 24 of the base plate 20B opposite to the surface 22 that contacts the hollow member 10B.

The first mounting plate portion 511 of the base hardware 51 is provided with a first mounting hole 513 through which the upper end (second end) of the connecting bolt 33 is inserted. A second attachment hole 510 is provided for this purpose. The first mounting plate portion 511 is longitudinal in a second direction orthogonal to the first direction, and the first mounting hole 513 is a long hole provided along the longitudinal direction of the first mounting plate portion 511 .

The base-side bolt 52 connects the base metal 51 and the tubular attachment 40B by being inserted into the base-side bolt hole 451 of the tubular attachment 40B and the second attachment hole 510 of the base metal 51 . In this embodiment, one base-side bolt 52 is configured to pass through the tubular attachment 40B in the second direction. A female threaded portion may be provided in the hole 510 , and the base side bolt 52 may pass through the base side bolt hole 451 of the tubular attachment 40</b>B and be screwed into the second mounting hole 510 of the base hardware 51 .

In the connecting device 30E according to this embodiment, the connecting bolt 33 is connected to the connecting metal fitting main body 31 in the same manner as in the above-described third embodiment, and the connecting metal fitting main body 31 is connected to the side wall 11 of the hollow member 10B with the through bolt 32 to the base plate. The base plate 20B is placed on the upper end 13 of the side wall 11 through the upper portion of the connecting bolt 33 through the insertion hole 23 of the base plate 20B. In this state, the base metal fitting 51 is placed on the base plate 20B through the upper portion of the connecting bolt 33 through the first mounting hole 513, and the fastening nut 34 is screwed onto the upper portion of the connecting bolt 33 to hold the base plate 20B and the base metal fitting 51 together. Fasten to the hollow member 10B.

Attachment 40B is arranged so that the lower end of attachment 40B is placed on base metal 51, and the connection end portion of attachment 40B is abutted against the base plate. The base hardware 51 and the tubular attachment 40B are connected by being inserted into the second mounting hole 510 and screwing a nut 523 onto the tip of the base-side bolt 52 .

By inserting the lower end of the post (not shown) into the inner space 44 from the upper opening of the attachment 40B and fixing the post to the attachment 40A, the connection structure (hollow member 10B, connector 30E, and attachment 40B) can be used as the base of the stanchion.

As described above, according to the present embodiment, the attachment 40B can be easily connected to the hollow member 10B that is driven as a pile, so that the workability in erecting the support can be improved.

Also, in the attachment 40B of the present embodiment, the first mounting hole 513 of the base hardware 51 is an elongated hole, and as shown in FIG. The attachment 40B can be eccentric with respect to the center of the hollow member 10B within the range of the length L1 of the first attachment hole 513. Further, as shown in FIG. 15C, the attachment 40B can be rotated around the connecting bolt 33 and placed. That is, even if there is an error between the position where the hollow member 10 is cast and the position where the support is erected on the XZ plane, the mounting position of the attachment 40B can be adjusted according to this error, and the support can be erected with high accuracy. be able to.

<others>
The present invention is not limited to the illustrated examples described above, and it goes without saying that various modifications can be made without departing from the gist of the present invention.

10, 10B Hollow member 20 Connected member 20B Base plate 30, 30A to 30E Connector 31 Connector main body 32 Through bolt 33 Connecting bolt 34 Nut 351, 352 Attachment mounting nut 40, 40A, 40B Attachment

Claims (7)

A connector for connecting a member to be connected to a connecting end of an elongated hollow member having side walls extending in a first direction,
a first plate portion disposed in a hollow portion formed inside the side wall at the connecting end portion of the hollow member and extending in the first direction and having a first bolt hole; a connecting fitting body including a second plate portion connected and extending in a second direction orthogonal to the first direction;
By being inserted into a pair of side wall side bolt holes formed at positions facing each other across the hollow portion on the connecting end side of the side wall and the first bolt hole in the connecting metal fitting main body, the connecting metal fitting through bolts for fixing the main body to the side wall;
A first end is connected to the second plate portion of the connecting fitting main body arranged in the hollow portion, and a second end opposite to the first end protrudes outside from the connecting end portion. A connecting bolt extending along the first direction, wherein the cover is arranged to extend in the second direction while being directly or indirectly abutted against the connecting end of the hollow member. a connecting bolt inserted into an insertion hole formed in the connecting member;
The connecting bolt is screwed to the second end side of the connecting bolt inserted through the insertion hole of the connecting member, thereby tightening the connecting member to the connecting end side of the hollow member to tighten the hollow member. a fastening nut connected to the
Hollow member coupling comprising: A connector for connecting an attachment to an elongated hollow member having sidewalls extending in a first direction, comprising:
a base plate disposed in contact with the connecting end of the hollow member;
a first plate portion disposed in a hollow portion formed inside the side wall at the connecting end portion of the hollow member and extending in the first direction and having a first bolt hole; a connecting fitting body including a second plate portion connected and extending in a second direction orthogonal to the first direction;
By being inserted into a pair of side wall side bolt holes formed at positions facing each other across the hollow portion on the connecting end side of the side wall and the first bolt hole in the connecting metal fitting main body, the connecting metal fitting through bolts for fixing the main body to the side wall;
A first end is connected to the second plate portion of the connecting fitting main body arranged in the hollow portion, and a second end opposite to the first end protrudes outside from the connecting end portion. a connecting bolt extending along the first direction, the connecting bolt being inserted into an insertion hole formed in the base plate;
a fastening nut that tightens the base plate to the connection end side of the hollow member by being screwed onto the second end side of the connection bolt that has been inserted through the insertion hole of the base plate;
with
A connecting tool of a hollow member, wherein a portion of the connecting bolt to be connected to the attachment protrudes from the fastening nut and is arranged to stand on the base plate. a first attachment mounting nut that screws together with the second end of the connecting bolt protruding from the fastening nut;
In a state in which the attachment is adjacent to the second end side of the first attachment mounting nut through the second end side of the connecting bolt through the mounting hole provided through at least a portion of the attachment, a second attachment mounting nut screwed onto the second end side of the connecting bolt and sandwiching the attachment between itself and the first attachment mounting nut;
3. The hollow member connector of claim 2, comprising: A connector for connecting an attachment to an elongated hollow member having sidewalls extending in a first direction, comprising:
a base plate disposed in contact with the connecting end of the hollow member;
a first plate portion disposed in a hollow portion formed inside the side wall at the connecting end portion of the hollow member and extending in the first direction and having a first bolt hole; a connecting fitting body including a second plate portion connected and extending in a second direction orthogonal to the first direction;
By being inserted into a pair of side wall side bolt holes formed at positions facing each other across the hollow portion on the connecting end side of the side wall and the first bolt hole in the connecting metal fitting main body, the connecting metal fitting through bolts for fixing the main body to the side wall;
A first end is connected to the second plate portion of the connecting fitting main body arranged in the hollow portion, and a second end opposite to the first end protrudes outside from the connecting end portion. A connecting bolt extending along the first direction, the second end of which is inserted into an insertion hole formed in the base plate and a mounting hole that penetrates at least a portion of the attachment. a connecting bolt inserted through the
The attachment is screwed to the second end side of the connection bolt inserted through the insertion hole formed in the base plate and the mounting hole of the attachment, thereby connecting the attachment to the connection end portion of the hollow member together with the base plate. a fastening nut that is tightened to the side and connected to the hollow member;
Hollow member coupling comprising: A connector for connecting a tubular attachment to an elongated hollow member having sidewalls extending in a first direction, comprising:
a base plate disposed in contact with the connecting end of the hollow member;
a first plate portion disposed in a hollow portion formed inside the side wall at the connecting end portion of the hollow member and extending in the first direction and having a first bolt hole; a connecting fitting body including a second plate portion connected and extending in a second direction orthogonal to the first direction;
By being inserted into a pair of side wall side bolt holes formed at positions facing each other across the hollow portion on the connecting end side of the side wall and the first bolt hole in the connecting metal fitting main body, the connecting metal fitting through bolts for fixing the main body to the side wall;
a first mounting plate portion disposed in contact with a surface of the base plate opposite to the surface in contact with the hollow member, extending in a second direction orthogonal to the first direction, and having a first mounting hole; a base hardware including a second mounting plate portion extending in the first direction and having a second mounting hole;
A first end is connected to the second plate portion of the connecting fitting main body arranged in the hollow portion, and a second end opposite to the first end protrudes outside from the connecting end portion. A connection bolt extending along the first direction, the second end of which is inserted into an insertion hole formed in the base plate and inserted into the second mounting hole of the base metal. When,
The base hardware is fastened to the base plate by being screwed to the second end side of the connection bolt that has been inserted through the insertion hole formed in the base plate and the second mounting hole of the base hardware. a fastening nut;
The base hardware is inserted into a pair of base-side bolt holes formed at opposing positions across a hollow portion in the connecting end side peripheral wall of the tubular attachment and the second mounting hole of the base hardware. and a base-side bolt that connects the tubular attachment,
Hollow member coupling comprising: The connection bolt
a head provided at the first end;
a shaft portion extending from the head portion toward the second end;
has
The connecting bolt inserts the shaft portion into the second bolt hole provided in the second plate portion of the connecting fitting main body from the side opposite to the connecting end portion of the hollow member. 6. The connector for hollow members according to any one of claims 1 to 5, wherein the connector is connected to the connector main body by a. 7. The connector for hollow members according to claim 6, wherein the head of the connecting bolt is polygonal, and at least one side of the polygon is arranged along the first plate portion of the connector body.

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