JP2002310111A - Connecting tool and connecting structure of connecting tool and joint - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connecting tool capable of strongly and sufficiently rigidly connecting a pipe structural material and a connected member arranged on the end surface side. SOLUTION: This connecting tool connects the pipe structural material 2 and the connecting object member 3 arranged on the end surface side, and has a plate-like base 4 having the same contour as the pipe structural material, a fitting part 5 continuously arranged on one surface of the base coaxially with the base, and tightly fitted in an end part of the pipe structural material, a metal or synthetic resin body 7 composed of a cylindrical part 6 inserted into the pipe structural material, a metal or synthetic resin moving piece 10 nonrotatably fitted to the cylindrical part of the body, and fixing the body and the pipe structural material by bringing the side contacting with an inner peripheral surface of the pipe structural material into pressure contact with the inner peripheral surface of the pipe structural material with the cylindrical part in a state of allowing the opening end of the pipe structural material to abut to one surface of the base of the body by wedge action cooperated with the cylindrical part caused by an axial directional movement of the body, and one bolt 16 or a set of a bolt and nut for fastening a moving bridge and the connected member.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting member and a connecting structure of the connecting member and a joint, and more particularly to a structure such as a chaise lounge using a pipe structural member and other members, or mainly using a pipe structural member. The present invention relates to a connecting tool and a connecting structure of a connecting tool and a joint for connecting a pipe structural member and a member arranged on an end face side thereof for assembling a framework structure such as a railing or a shelving vehicle.

[0002]

2. Description of the Related Art Conventionally, a structure using a pipe structural material and other members, for example, the entire size is 950 mm in length and 38 in depth
0mm, height of about 450mm, height of the seat is about 420mm, a plurality of resin-coated steel pipes are laid horizontally on the upper part between the left and right leg plates, and this is used as a seat, and the lower part between the left and right leg plates As a connecting tool for connecting a left and right leg plate and a resin-coated steel pipe in a chaise lounge or the like in which a single resin-coated steel pipe is horizontally mounted and used as a lower connecting member, the one shown in FIG. 19 is known.

[0003] A connecting tool 121 is a thin steel pipe (SPCC) 1
A pipe structure member 122 made of a resin-coated steel pipe provided with a resin coating 122b in which a synthetic resin (ABS resin, AAS resin, or the like) is coated via an adhesive layer on the outer peripheral surface of the tube structure member 22a, The pipe structure member 122 is connected to a leg plate 123 as a connected member to be connected, and has the same outer diameter as the tube structure member 122 and a required thickness (for example,
Base washer 12 with an outer diameter of about 34 mm and about 6 mm)
4, a bolt 125 inserted into a through hole in the shaft center of the base washer 124, and a columnar shape having an outer diameter enough to lightly contact the inner periphery of the pipe structural member 122. A rubber bush 126 is externally fitted to the bolt 125 via the rubber bush 126, and a nut 127 with a washer screwed into a screw portion of the bolt 125 protruding from the rubber bush 126.
In FIG. 19, 128 is the head and leg 12 of the bolt 125.
3 is a washer interposed between the two.

[0004] The connecting tool 121 includes a base washer 124.
19, the leg plate 123 is in contact with the other surface (the left side in FIG. 19), the bolt 125 is inserted through the through holes of the leg 123 and the base washer 124, and the base washer 12
After the rubber bush 126 is externally fitted to a bolt 125 protruding from one side (the right side in FIG. 19) of the rubber bush 4, the rubber bush 126 presses a nut 127 with a washer on a thread portion of the bolt 125 protruding from the rubber bush 126. The rubber bush 126 is fitted into the pipe structural member 122 while being lightly screwed so as not to be screwed, and the end face of the pipe structural member 122 is brought into contact with the other surface of the washer 124 for the base. , The tool is turned in a direction in which the nut 127 with the washer and the washer 124 for the base approach each other, and the nut 127 with the washer and the washer 124 for the base approach each other, so that the rubber bush 126 is moved in the longitudinal direction. By compressing the tube structure material, the outer diameter of the tube structure material is increased and the outer peripheral portion thereof is pressed against the inner periphery of the tube structure material 122.
22 and the leg plate 123.

In addition, a frame structure mainly using a pipe structural material, for example, an almost constant height parallel to the inclination angle of a stair or a slope (750 m from a tread surface of a stair or a floor of a slope).
A railing standing on a stair or a slope with a height of about 850 mm), or a nearly constant height from the floor (about 750 to 850 mm from the floor of the landing) at the landing of the stairs, along the wall A pipe structure as a frame structure material for a handrail attached to an appropriate structure (for example, a pillar, a rim, a stud, etc.) of a wall portion in parallel with a wall surface, and a joint having a connecting tubular portion having the same outer diameter as the pipe structure material 20 and 21 are known as connecting devices for connecting the connecting portions so that the connecting portions have the same outer diameter.

[0006] The connecting member 131 is a pipe structural member 132 and a member to be connected to be connected to the pipe structural member 132. The connecting member 131 is formed by connecting two connecting cylinder portions 133 a having the same outer diameter as the pipe structural member 132 to the curved portion 13.
90 ° elbow joint 13 integrally connected via 3b
3 and has the same outer diameter as the pipe structural member 132 and the joint 133, and has a required thickness (for example, an outer diameter of 34 mm).
(In the case of about 6 mm), a disc-shaped base 134, bolts 135, 136 vertically planted in the center of both sides of the base 134 and threaded in mutually different directions, A rubber bush 137, 138 which has a cylindrical shape with an outer diameter enough to lightly contact the inner periphery of the connection tubular portion 133a of the joint 133, and which is externally fitted to each of the bolts 135, 136 via a through hole in the shaft center portion. And rubber bush 13
7, 138 and nuts 139 and 140 which are screwed into the threaded portions of the bolts 134 and 135 protruding therefrom.

The connecting member 131 is provided with a nut 13 with a washer.
With the respective rubber bushes 137 and 138 fitted into the pipe structural member 132 and the connecting tubular portion 133a of the joint 133 in a state where the rubber bushes 137 and 138 are lightly screwed so as not to press the rubber bushes 137 and 138, the outer periphery of the base 134 , The spanner is engaged with the tool engagement surface 141 formed at the opposing position in, and the spanner is turned in a direction in which the nuts 139 and 140 approach each other via the base 134 and the bolts 135 and 136, and the nut with the washer is rotated. 139, 140 are moved and approached to each other, and rubber bushes 137, 13
8 are compressed in the longitudinal direction to increase their outer diameters, so that their outer peripheral portions are connected to the pipe structural member 132 and the joint 133.
Is pressed against the inner periphery of the connecting tubular portion 133a, thereby intermediary connecting the pipe structural member 132 and the joint 133.

[0008]

However, the above-mentioned conventional connecting device has the following disadvantages. In the structure such as a chaise lounge, all connection parts between each pipe structural material and the left and right leg plates as connected members depend on the function of the rubber bush as a rubber elastic body. It is difficult to obtain high rigidity, and when an external force acts on or loads the structure, the structure is likely to be deformed or distorted.

[0009] Further, since all connecting portions of the pipe structure material and the joint as the connected member in the framework structure such as the handrail depend on the function of the rubber bush as the rubber elastic body, the framework structure is not provided. It is difficult to obtain sufficient rigidity as a whole, and when an external force acts on or loads the skeleton structure, the skeleton structure is likely to be deformed or distorted. And
Since the strength of each connecting portion between the connecting member, the pipe structural material, and the joint depends on the strength of the bolt, there is concern about the strength such as crack resistance and shear strength of the root portion of the bolt to the base.

[0010] Therefore, an object of the present invention is to provide a connection mediator capable of making the connection between a pipe structural member and a member to be connected disposed on the end face side strong and rigid. Another object of the present invention is to provide a connection structure between the connector and the joint which can firmly and sufficiently connect the connector and the joint.

[0011]

According to a first aspect of the present invention, there is provided a first connector for connecting a pipe structural member and a member to be connected disposed on an end face side thereof. A plate-shaped base having the same contour as the pipe structural material, a fitting part coaxially connected to the base on one surface of the base, and closely fitted to an end of the pipe structural material; A metal or synthetic resin main body consisting of a cylindrical part inserted coaxially with the fitting part and inserted into the pipe structural member, and non-rotatably fitted to the cylindrical part of the main body, in the axial direction of the main body. The open end of the tube structure is brought into contact with one surface of the base of the main body by the wedge action cooperating with the cylindrical portion accompanying the movement of A contact piece is pressed against the inner peripheral surface of the pipe structural material, and a metal or synthetic resin moving piece that fixes the main body and the pipe structural material,
It is provided with one bolt or one set of bolts and nuts for fastening the moving piece and the connected member.

The second connecting member connects the pipe structural member and a joint disposed on the end face side and having a connecting tubular portion having the same contour as the pipe structural member. A plate-like base having the same contour as that of the connecting tubular portion, a fitting portion coaxially connected to the base on one surface of the base, and closely fitted to an end of the pipe structural material; A tubular portion coaxially connected to the fitting portion and inserted into the pipe structural material, and coaxially connected to the other surface of the base coaxially with the base, and fitted into the connecting tubular portion of the joint; A metal or synthetic resin main body composed of a cylindrical or columnar second fitting portion that is appropriately fixed, and a cylindrical portion which is non-rotatably fitted to the cylindrical portion of the main body and moves with the main body in the axial direction. The inner peripheral surface of the tubular structural material is joined to the tubular portion by the wedge action in cooperation with the cylindrical portion while the open end of the tubular structural material is in contact with one surface of the base of the main body. The contacting side is pressed against the inner peripheral surface of the pipe structural material, and a metal or synthetic resin moving piece for fixing the main body and the pipe structural material is fastened to the moving piece and the second fitting portion of the main body. It is provided with one bolt or one set of bolts and nuts.

Further, the third connecting tool is characterized in that, in the first or second connecting tool, a detachment preventing means for preventing the moving piece from detaching from the main body is provided.

On the other hand, in the connection structure between the first connector and the joint, a peripheral groove is formed on the outer periphery of the second fitting portion of the main body in the second or third connector, and the other surface of the base of the main body is formed. In a state where the opening end of the connecting tube portion of the joint is abutted, a set screw is screwed into a screw hole passing through the connecting tube portion of the joint corresponding to the peripheral groove of the second fitting portion. The tip of the set screw is engaged with the peripheral groove of the second fitting portion, the set screw is tightened, and the second fitting portion and the connecting cylinder portion of the joint are fixed.

[0015] The connection structure between the second connecting member and the joint is as follows.
The outer peripheral surface of the second fitting portion of the main body is connected to the joint with the other end of the base of the main body of the second or third connecting tool being in contact with the open end of the connecting tubular portion of the joint. It is characterized in that the inner peripheral surface of the tubular portion is adhered and the second fitting portion and the connecting tubular portion of the joint are fixed.

[0016]

In the first connecting device, the fitting portion connected to the base is formed in an arbitrary shape while securing the required thickness by making the whole plate-shaped or cylindrical-shaped on the inner surface side of the pipe structural material. It can be installed integrally with the base. The fitting portion of the main body is not elastically deformed, and the entire outer peripheral surface or almost the entire outer peripheral surface of the fitting portion and the inner peripheral surface of the end portion of the pipe structural material are fitted in close contact with each other, while the cylindrical shape is formed. Almost the entire outer peripheral surface of the portion or the moving piece and the inner peripheral surface of the pipe structural member are strongly pressed against each other by the wedge action of the cylindrical portion and the moving piece.

In the second connector, the fitting portion connected to the base is formed in an arbitrary shape by securing the required thickness by making the entire plate-like or tubular shape on the inner surface side of the pipe structural material. It can be installed integrally with the base. And
The fitting portion of the main body and the second fitting portion are not elastically deformed, and the entire outer peripheral surface or substantially the entire outer peripheral surface of the fitting portion and the inner peripheral surface of the end portion of the pipe structural material are in close contact and fitted. On the other hand, almost the entire outer peripheral surface of the cylindrical portion or the moving piece and the inner peripheral surface of the pipe structural material are strongly pressed by the wedge action of the cylindrical portion and the moving piece.

Further, in the third connecting device, in addition to the action of the first or second device, the moving piece is always kept in an inseparable relationship with the main body. As the detachment preventing means, there are a case where an undercut for preventing the detachment of the moving piece is provided in the cylindrical portion or the moving piece, and a case where a detachable retaining ring or a spring pin or the like is used at the tip of the bolt. is there.

On the other hand, in the connection structure between the first connecting member and the joint, the other surface of the base of the main body of the connecting member includes:
With the open end of the connecting tube in the joint abutting,
The second fitting portion of the main body and the connecting tubular portion of the joint are screwed in the circumferential groove together with no elastic deformation of the second fitting portion.

In the connection structure between the second connecting member and the joint, the opening end of the connecting cylindrical portion of the joint is brought into contact with the other surface of the base of the main body of the connecting member. The second fitting portion and the connecting tube portion of the joint are bonded together with the second fitting portion having no elastic deformation.

[0021]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 are a front sectional view (a sectional view taken along line II in FIG. 1) and a right side view, respectively, showing a first embodiment of the connector according to the present invention. This connector 1 has a nominal diameter (outer diameter) of 28 mm, and the outer peripheral surface of a thin steel pipe (SPCC) having a thickness of 0.7 mm is coated with a synthetic resin (ABS resin, AAS resin, or the like) via an adhesive layer. A pipe structural member 2 made of a resin-coated steel pipe provided with a resin coating 2b having a thickness of 1 mm, and a foamable injection-molded product of synthetic resin (ABS resin, AAS resin, etc.) or plywood (plywood). It has a bolt through hole 3a, a height of about 450 mm, a width of about 380 mm, and a thickness of about 24 mm, and connects the leg plate 3 as a connected member disposed on the end face side of the pipe structural material 2 with a synthetic resin. (ABS resin, A
(AS resin etc.) and a pipe structural material 2
And a disc-shaped base 4 having the same outer diameter as that of the base 4 and coaxially connected to one (right side in FIG. 1) surface of the base 4 and closely fitted to an end of the pipe structural material 2. Fitting portion 5 and fitting portion 5
The main body 7 includes a cylindrical tubular portion 6 having an outer diameter appropriately smaller than the outer diameter of the fitting portion 5 and having an inner diameter appropriately larger than a bolt described later.

The outer peripheral surface of the main body 7 on the opening end side of the cylindrical portion 6 is formed as a tapered surface 8 whose diameter becomes larger as approaching the fitting portion 5. The detent ridges 9 of the book are provided at equal intervals in the circumferential direction.

The cylindrical portion 6 of the main body 7 is made of an injection-molded product of the same synthetic resin as the main body 7, and has a cylindrical portion 10a having an outer diameter substantially the same as the inner diameter of the pipe structural member 2, and one end of the cylindrical portion 10a. A bottomed cylindrical moving piece 10 integrally formed with a bottom wall 10b for closing the right end in FIG. 1 and a shaft portion 10c erected in the bottom wall 10b is made movable in the axial direction, and has a cylindrical shape. It is fitted outside to prevent detachment from the part 6. That is, moving piece 1
The inner peripheral surface of the cylindrical portion 10 a at 0 is a tapered surface 11 corresponding to the tapered surface 8 of the cylindrical portion 6, and the inner diameter decreases as the open end connected to the tapered surface 11 approaches the open end. The undercut 12 is formed to prevent the moving piece 10 from coming off the cylindrical portion 6. A portion of the tapered surface 8 of the cylindrical portion 6 near the end on the side of the undercut 12 serves as a hook portion for the undercut 12, and prevents the movable piece 10 from being detached from the cylindrical portion 6. . Also, the moving piece 1 is provided on the cylindrical portion 10a of the moving piece 10.
In order to disable rotation about the axis of the cylinder 0 itself, an axial slit 13 with which the rotation preventing ridge 9 of the cylindrical portion 6 is engaged is provided to extend to the bottom wall 10b. And the moving piece 10
In the shaft portion 10c, a screw hole 14 is formed through the shaft center portion. The screw hole 14 is inserted into a bolt through hole 15 formed through the shaft center portion of the main body 7, and the movable piece 10 A screw portion of one bolt 16 having a nominal diameter of 6 mm to be fastened to the fitting portion 5 of the main body 7 is provided so as to be screwable. In FIG. 1, reference numeral 17 denotes a washer interposed between the head of the bolt 16 and the leg plate 3.

The pipe structural member 2 and the leg plate 3 are connected by using the above-mentioned connecting tool 1. As shown in FIG. 3, the overall size is about 950 mm in length, 380 mm in depth, and about 450 mm in height, and In order to assemble the couch 18 having a height of about 420 mm, first, the leg plate 3 is attached to the other (left side in FIG. Bolt through hole 3a and bolt through hole 1 in base 4
5 and a bolt 16 having a washer 17 fitted in the bolt holes 3a, 15 of the leg plate 3 and the base 4.
And loosely screw the screw portion of the bolt 16 into the screw hole 14 of the moving piece 10. Next, the tubular portion 6 of the main body 7 of each connection tool 1 is inserted into the pipe structural material 2, and the fitting portion 5 is fitted into the end of the pipe structural material 2, and After the end surfaces of the pipe structural members 2 are brought into contact with each other, the bolts 16 are appropriately rotated to fasten the movable piece 10 and the leg plate 3,
The outer peripheral surface of the cylindrical portion 10a of the moving piece 10 is pressed against the inner peripheral surface of the pipe structural material 2 by a wedge action in cooperation with the cylindrical portion 6 accompanying the movement of the main body 7 in the axial direction. 2 and the left and right leg plates 3 and 3 are connected and assembled into a chaise longue 18.

According to the connecting device 1 having the above-described structure, the fitting portion 5 continuously provided to the base 4 is provided on the inner surface side of the pipe structural member 2.
The whole plate can be formed in a plate or cylindrical shape to secure a required thickness and be formed in an arbitrary shape, and is integrally provided with the base 4. Sufficient strength such as crack strength and shear strength can be secured. And the fitting part 5 of the main body 7 is not elastically deformed.
The entire outer peripheral surface or substantially the entire outer peripheral surface of the fitting portion 5 and the pipe structural member 2 are fitted in close contact with the inner peripheral surface of the end portion, while the substantially entire outer peripheral surface of the movable piece 10 and the inner peripheral surface of the pipe structural member 2 are fitted. The surface is strongly pressed by the wedge action of the cylindrical portion 6 and the moving piece 10, so that the connector 1 and the pipe structural material can be connected firmly and sufficiently to rigidity, and further, to the couch 18 as a structure. When an external force acts or loads on the other hand, the chaise longue 18 is less likely to be deformed or distorted. Further, since the moving piece 10 and the main body 7 are always kept in a non-separable relationship, the assembly and disassembly of the structure can be performed.
Further, during the maintenance / repair, the moving piece 10 does not separate from the main body 7 and fall into the pipe structural member 2, so that the moving piece 10 cannot be taken out or missing.

FIG. 4 is a front sectional view showing a second embodiment of the connecting device according to the present invention. This connecting tool 21 is
The pipe structure 2 is similar to that of the embodiment, and is made of stainless steel or the like, and has a spherical shape slightly larger than the outer diameter of the pipe structure 2 and has a smaller outer diameter than the outer diameter of the pipe structure 2 as appropriate. A screw hole 22b passing through the center of the disk-shaped mounting seat 22a is provided, and a sliding ball (a leg of a framed structure such as a work table or a shelf) is provided as a connected member disposed on the end face side of the pipe structural member 2. It is attached to the lower end of the pillar and is used to connect with a synthetic resin (ABS resin, AAS resin, etc.) 22 for moving the workbench, shelves, etc. on the floor surface when sliding. ), A disc-shaped base 23 having the same outer diameter as the pipe structural material 2 and coaxially connected to one (upper in FIG. 4) surface of the base 23 to form the pipe structural material. 2 and a short cylindrical fitting portion 24 closely fitted to the end of the second fitting portion 2.
4 and a main body 26 composed of a cylindrical tubular portion 25 having an outer diameter substantially the same as the inner diameter of the pipe structural material 2.

The cylindrical portion 25 of the main body 26 is provided with a plurality of slits 27 in the axial direction, and a tapered surface 28 whose diameter increases as approaching the open end is formed on the inner peripheral surface. An undercut 29 is provided in which the inner diameter is reduced as the open end connected to 28 approaches the open end.

The cylindrical portion 25 of the main body 26 is formed of an injection-molded product of a synthetic resin (ABS resin, AAS resin, etc.), and the outer peripheral surface is formed with a tapered surface 30 corresponding to the tapered surface 28 of the cylindrical portion 25. The truncated cone-shaped movable piece 31 is fitted so as to be movable in the axial direction of the main body 26, and the movable piece 3
The one tapered surface 30 is provided with a plurality of axially non-rotating ridges 32 that engage with the slits 27 of the cylindrical portion 25 in order to prevent the movable piece 31 from rotating around its axis. Further, a bolt 33 is integrally inserted into the movable piece 31 by insert molding the head, and a shaft portion of the bolt 33 is provided with a bolt through hole 3 penetrating through the shaft center portion of the base 23.
4, a sliding ball 22 is provided on the threaded portion of the bolt 33 protruding from the other (lower in FIG. 4) surface of the base 23 via a screw hole 22b.

As shown in FIG. 4, the lower end surface of the pipe structural member 2 constituting the pillar of the framework structure such as a work table or a shelf is slid into contact with the floor surface 35 using the connecting tool 21 described above. In order to connect the ball 22, first, the sliding ball 22 is loosely screwed into the screw portion of the bolt 33 protruding from the other surface of the base 23 of the connecting tool 21 via the screw hole 22b. Next, the tubular portion 25 of the main body 26 of the connection tool 21 is inserted into the pipe structural material 2 and the fitting portion 24 is inserted into the pipe structural material 2.
After the sliding ball 22 is turned in an appropriate direction, the moving piece 31 and the sliding ball 22 are fastened to each other, and the main body is inserted. 2
6, the outer peripheral surface of the cylindrical portion 25 is pressed against the inner peripheral surface of the pipe structural member 2 by a wedge action cooperating with the cylindrical portion 25 accompanying the movement in the axial direction of the tube structural member 6, and the pipe structural member 2 and the sliding ball 22 And connect.

According to the connecting device 21 having the above-described structure, the same effects as those of the first embodiment can be obtained.
The description is omitted.

FIGS. 5 and 6 are a front sectional view and a left side view, respectively, showing a third embodiment of the connector according to the present invention. This connecting tool 21 'is combined with the same pipe structural member 2 as that of the first embodiment and the outer peripheral surface of a thin steel pipe 36a having a larger nominal diameter of 42 mm and a wall thickness of 0.9 mm. A connected member which is formed of a resin-coated steel pipe provided with a resin coating 36b having a thickness of 1 mm and coated with a resin (ABS resin, AAS resin, etc.) via an adhesive layer, and which is disposed at a right angle to the end face side of the pipe structural material 2 And the second pipe structural member 36 of
The other surface of the base 23 'in the main body 26' is formed with a concave surface 37 which engages with the outer peripheral surface of the second pipe structural member 36, and is integrally formed with the axis of the main body 26 'with the base 23'. It has a cylindrical shape that is parallel and is externally fitted to the shaft portion of the bolt 33, and protrudes from the other surface of the base 23 ′ to form the base 2.
Second pipe structural member 36 engaged with concave curved surface 37 of 3 '
The shape holding cylinder 38 whose front end surface is in contact with the inner peripheral surface of
6 ′, a ring-shaped concave portion 39 is formed in a concave surface 37 around the base of the shape holding cylinder 38,
The O-ring 40 is housed in the recess 39. on the other hand,
A cap-shaped washer 42 in which a packing 41 is provided is interposed between the threaded portion of the bolt 33 protruding from the bolt through hole 45 in the second pipe structural member 36 in order to improve the waterproofness in cooperation with the O-ring 40. The cap nut 43 is detachably screwed.

In order to connect the pipe structural members 2 and 36 at right angles with each other by using the above-mentioned connecting tool 21 ', first, the connecting tool 2'
1 ', the cylindrical portion 25 of the main body 26' is inserted into the pipe structural member 2, the fitting portion 24 is inserted into the end of the pipe structural member 2, and the pipe structural member 2 is attached to one surface of the base 23 '. Of the cap nut 43 from the threaded portion of the bolt 33.
The shape holding cylinder 38 from which the washer 42 has been removed is inserted into a through hole 44 provided at a required position of the second pipe structural member 36, and the tip thereof abuts on the inner peripheral surface of the second pipe structural member 36, and Then, the screw portion of the bolt 33 is inserted into a bolt through hole 45 provided in the second pipe structural member 36 so as to face the through hole 44. Next, the outer peripheral surface of the second pipe structural member 36 is engaged with the concave curved surface 37 of the main body 26 ′, the washer 42 is fitted to the threaded portion of the bolt 33 protruding from the bolt through hole 45, and the cap nut After screwing the cap 43, the cap nut 43 is tightened.

According to the connecting tool 21 'having the above-described structure, substantially the same operation and effect as those of the first embodiment can be obtained.
The description is omitted.

FIGS. 7 and 8 are front sectional views (V in FIG. 8) showing a fourth embodiment of the connector according to the present invention.
FIG. 2 is a sectional view taken along the line II-VII) and a right side view. The connection mediator 51 is made of a stainless steel pipe having a nominal diameter (outer diameter) of 34 mm and an inner diameter of 31 mm, and a die-cast aluminum product. The connecting cylinder 53 a has the same outer diameter as the pipe structure 52. It has an intermediate connection with a joint 53 such as a variable angle type or a 90 ° elbow type, which will be described later, is made of an aluminum die-cast product, and has a pipe structural material 52.
And a disc-shaped base 54 having the same outer diameter as the connecting tubular portion 53a of the joint 53, and coaxially connected to one (right side in FIG. 1) surface of the base 54, and an end of the pipe structural material 52. The other part of the base 54 is a disc-shaped fitting portion 55 that is closely fitted into the fitting portion 55, a cylindrical tubular portion 56 coaxially connected to the fitting portion 55, and having an outer diameter substantially the same as the inner diameter of the pipe structure 52. (Left side in FIG. 7)
And the connecting cylindrical portion 53a of the joint 53
The main body 57 includes a short-cylindrical second fitting portion 58 having a bottom and closely fitted to the fitting.

On the outer periphery of the second fitting portion 58 of the main body 57, a circumferential groove 59 is formed in which a tip of a set screw described later is engaged, while a plurality of axially extending grooves are formed in the cylindrical portion 56. The slit 60 is provided and the opening end side (FIG. 7)
(The right end side in FIG. 3) is a tapered surface 61 whose inner diameter increases as it approaches the open end.

On the cylindrical portion 56 of the main body 57, a truncated cone-shaped moving piece 63 made of an aluminum die-cast product and having an outer peripheral surface formed on a tapered surface 62 corresponding to the tapered surface 61 of the cylindrical portion 56 is provided. The movable piece 63 is engaged with the slit 60 of the cylindrical portion 56 so as to be rotatable around the axis of the movable piece 63 on the tapered surface 62 of the movable piece 63. A plurality of detent ridges 64 in the axial direction are provided. In addition, a screw hole 65 is provided through the axis of the moving piece 63.
A bolt 67 having a nominal diameter of 6 mm and having a nominal diameter of 6 mm, which is inserted into a bolt through hole 66 penetrating through the axis of the main body 57 and fastens the movable piece 63 and the second fitting portion 58 of the main body 57. Are threadably inserted.

FIGS. 9 and 10 show the connecting device 5 described above, respectively.
FIG. 2 is a front view and an exploded perspective view of a variable-angle joint connected to 1; The joint 68 is made of an aluminum die-cast product, and has a short cylindrical bottomed connecting tube portion 69 into which the second fitting portion 58 of the connecting tool 51 is tightly fitted at one end (the left end in FIG. 9). At the other end (the right end in FIG. 9),
A substantially hemispherical projection 7 having a curvature radius approximately equal to the radius of the projection 9
0, and the bottom surface is a curved surface having the same radius of curvature as the convex portion 70, and the engaging groove 71 whose center of curvature coincides with the center of curvature of the convex portion 70 is formed with the cylindrical portion 69 in the axial direction. The first segment 72 formed over the portion 70 and a die-cast product of aluminum in the same manner, and the second fitting portion 58 of the connecting tool 51 is closely fitted to one end (the right end in FIG. 9). At the other end (the left end in FIG. 9) of the short cylindrical connecting tube portion 73, the edge (ridge line) of the reduced diameter is gradually reduced so that the upper side in FIG. A substantially triangular diameter-reducing cylinder 74 at an angle of about 45 ° with the axis of the cylinder is continuously provided, the end face 74a of the diameter-reducing portion of the diameter-reducing cylinder 74, and the opening of the diameter-reducing portion of the diameter-reducing cylinder 74. An outer surface of a bottom wall 75 that closes the first segment 72 is provided so as to be able to engage with a part of the projection 70 of the first segment 72, One, the center of the end portion of the reduced diameter cylindrical portion 74,
A plate-shaped connecting portion 76 having a curved surface capable of engaging with the bottom surface of the engaging groove 71 of the first segment 72 extending over a peripheral surface of about 2/3 circle extends in the axial direction of the reduced-diameter cylindrical portion 74. The projecting second segment 77 is inserted into the pin insertion holes 78 and 79 passing through the center of curvature of the convex portion 70 and the coupling portion 76 in a state where the coupling portion 76 is engaged with the engagement groove 71. It is connected via a spring pin (connection pin) 80 so as to be able to be bent at an angle of about 90 to 180 °. 9 and 10, reference numerals 81 and 82 denote first and second segments 72 and 7, respectively.
7 are inserted into the second fitting portion 58 of the connection tool 51 by the screw holes penetrating through the cylinder portions 69 and 73, and the opening ends of the cylinder portions 69 and 73 are respectively connected to the base 54 of the main body 57 of the connection tool 51.
The second fitting portion 5 is brought into contact with the other surface of the
8 is provided at a position corresponding to the circumferential groove 59.

FIG. 11 is a front sectional view of a 90 ° elbow-shaped joint connected to the above-mentioned connecting tool 51. This joint 8
Numeral 3 is made of an aluminum die-cast product, and is formed by integrally connecting two connecting cylinder portions 84 and 85 so as to form a right angle via a curved portion 86.
Screw holes 87 and 88 are provided similarly to the joint 68 described above, and a partition wall 8 for reinforcement is provided at an intermediate portion of the curved portion 66.
9 are provided. Screw holes 81, 82 and 87, 8
8 is a peripheral groove 5 of the second fitting portion 58 as described later.
9, the outer peripheral surface of the second fitting portion 58 is brought into contact with the inner peripheral surfaces of the cylindrical portions 69 and 73 and 84 and 85 by strongly tightening the set screw with the tip end of the set screw engaged. The connection tool 51 and the joints 68, 83 are screwed in the circumferential groove 59, and the connection tool 51 and the joints 68, 8 are eventually pressed.
3 is provided so as to be connected firmly and sufficiently with rigidity. Therefore, the screw holes 81 and 82 are formed by connecting the first segment 72 and the second segment 77 with the pin 80 in the illustrated example shown in FIGS. 14 and 15 (end view taken along the line XV-XV in FIG. 14). In the horizontal direction with the cylinders 69, 7
3 and located on the same side on the left and right (right in FIG. 15).
And screw holes 87 and 88 are provided in FIG.
In the illustrated example clearly shown in FIG.
Are provided on the corners of the 90 ° elbow-shaped joint 83 at one position.
The arrangement and number of 2, 87 and 88 are not limited to this, and may be appropriately selected according to the specification of the framework structure and its members.

A pipe structural member 52 is formed by using the connecting member 51 described above.
And angle variable type joint 68 and 90 ° elbow type joint 83
As shown in FIG. 12, a frame structure having a substantially constant height (about 750 to 850 mm from the floor of the passage and the tread of the stairs) is parallel to the floor of the passage 90 and the inclination angle of the stairs 91 as shown in FIG. To construct the handrail 92 as a body, first,
As shown in FIG. 13, FIG. 14, FIG. 15, and FIG.
The tubular portions 56 of the connecting tool 51 are inserted into both end portions of the three pipe structural members 52 that are arranged at the upper end of the two and serve as handrails, the fitting portions 55 are fitted, and one of the bases 54 is provided. After the end face of the pipe structural material 52 is brought into contact with the surface of the main body 57, the moving piece 63 and the second fitting portion 58 are fastened by appropriately turning the bolt 67, and the moving piece 63 moves in the axial direction of the main body 57. Cylindrical part 5
The outer peripheral surface of the tubular portion 56 is pressed against the inner peripheral surface of the pipe structural material 52 by the wedge action in cooperation with 6, and the connecting tool 1 is assembled to the end side of the pipe structural material 52 (connected. deep).

Next, two pipe structural members 5 serving as pillars at both ends are provided.
2 and the two pipe structural members 52 serving as intermediate supports
The first and second segments 72, 72 in each angle-variable joint 68 are erected on the floor surface of the
The connecting cylinder portions 69 and 73 of 77 are externally fitted to the second fitting portion 58 of the connecting tool 51 assembled on the end side of the pipe structural material 52, and the respective open ends are connected to the other of the base 54 of the connecting tool 51. In a state of contact with the surfaces, three sets of screws are screwed into the screw holes 81 and 82, and the respective tips are engaged with the circumferential groove 59 of the connecting tool 51 and tightened, thereby forming three pipes serving as handrails. Structural material 5
2 are linked together. Next, the connecting tool 51 and the joint 68
One of the connecting tubular portions 84 of the 90 ° elbow-shaped joint 83 is externally fitted to the second fitting portions 58 of the connecting tool 51 assembled to both end portions of the pipe structural material 52 connected through the opening. With the end in contact with the other surface of the base 54 of the connection tool 51, a set screw 94 is screwed into the screw hole 87, and the tip is engaged with the peripheral groove 59 of the second fitting portion 58 and tightened. After connecting the connecting tool 51 to the joint 83, the other connecting tubular portion 85 of the joint 83 at both ends is connected to the pipe structural material 52 serving as a support at both ends.
A set screw 94 is screwed out of the screw hole 88 in a state where the second fitting portion 58 of the connecting tool 51 attached to the upper end of the connecting tool 51 is fitted to the outside, and each open end is in contact with the other surface of the base 54 of the connecting tool 51. Then, the distal end portion is engaged with the circumferential groove 59 of the connecting tool 51 and tightened, and the three pipe structural members 52 connected to each other via the connecting tool 51 and the joint 68 are placed on the struts at both ends. Assemble to. Then, as shown in FIG. 12, the pipe structural member 52 assembled on the pillars at both ends is connected to the upper end of the intermediate pillar via the joint 95, and the lower ends of the pillars are connected with the joints 96, 96. 97 and the pipe structure 52.

According to the connecting tool 51 having the above structure, the base 5
The fitting portion 55 connected to the base member 4 can be formed in an arbitrary shape on the inner surface side of the tube structural member 52 by securing the necessary thickness by making the whole plate-shaped or tubular-shaped and integrated with the base 54. Therefore, sufficient strength such as crack resistance and shear strength can be secured in a portion from the base 54 to the fitting portion 55. The fitting portion 55 of the main body 57 is not elastically deformed, and the entire outer peripheral surface or almost the entire outer peripheral surface of the fitting portion 55 and the inner peripheral surface of the end portion of the pipe structural member 52 are tightly fitted and fitted. Since the substantially entire outer peripheral surface of the cylindrical portion 56 and the inner peripheral surface of the pipe structural member 52 are strongly pressed by the wedge action of the cylindrical portion 56 and the moving piece 63, the connecting tool 51 and the pipe structural member 52 are separated. The connection can be made firmly and sufficiently rigid.

On the other hand, according to the connection structure between the connecting tool 51 and the joints 68 and 83, the connecting fittings 69 and 73 of the joints 68 and 83 are inserted into the second fitting portions 58 of the main body 57 of the connecting tool 51.
The second end 84 of the main body 57 is fitted in such a manner that the open ends thereof are fitted to the other surface of the base 54 of the main body 57 with their open ends.
Connecting cylindrical portions 69, 73 between the fitting portion 58 and the joints 68, 83;
84 and 85 are screwed in the circumferential groove 59 in addition to the fact that the second fitting portion 58 has no elastic deformation, so that the connection tool 51 and the joints 68 and 83 can be connected firmly and sufficiently. it can.

FIGS. 17 and 18 are a front sectional view (a sectional view taken along line XVII-XVII in FIG. 18) and a right side view, respectively, showing a fifth embodiment of the connector according to the present invention. The connecting tool 101 has a nominal diameter (outer diameter) of 28 mm and a wall thickness of 0.1 mm.
A pipe structural material 102 comprising a resin-coated steel pipe having a 1 mm-thick resin coating 102b in which an outer peripheral surface of a 7 mm thin-walled steel pipe (SPCC) 102a is coated with a synthetic resin (ABS resin, AAS resin, etc.) via an adhesive layer; , Synthetic resin (ABS resin, A
Angle-fixed type joint made of an injection-molded product of AS resin or the like, and integrally connected to the pipe structural member 102 and two connecting cylinder portions 103a having the same outer diameter via a curved portion (not shown) having an appropriate angle. 103 and a synthetic resin (ABS)
One of one of the bases 104 (in FIG. 17, a right side in FIG. 17), which is made of an injection-molded product made of a resin, an AAS resin, etc. And a short cylindrical fitting portion 10 which is coaxially connected to the surface of
5. The pipe structural material 102 is coaxially connected to the fitting portion 105,
17 and coaxially connected to the other (left side in FIG. 17) surface of the base 104 and the connecting cylindrical portion 103a of the joint 103 densely. A main body 108 including a short-cylindrical second fitting portion 107 with a bottom is fitted.

The cylindrical portion 106 of the main body 108 is provided with a plurality of slits 109 in the axial direction, and the inner peripheral surface on the open end side (the right end side in FIG. 17) of the cylindrical portion 106 has an opening. The tapered surface 110 forms a hexagonal pyramid surface whose diameter increases as approaching the end.

The cylindrical portion 106 of the main body 108
A truncated hexagonal pyramid-shaped moving piece made of an injection-molded product of a synthetic resin (ABS resin, AAS resin, etc.) and having an outer peripheral surface having a tapered surface 111 forming a hexagonal pyramid surface corresponding to the tapered surface 110 of the cylindrical portion 106. 112 is a tapered surface 1 forming a hexagonal pyramid surface
By aligning 11 with the tapered surface 110 of the cylindrical portion 106, its ridge engages with the slit 109, enabling the main body 108 to move in the axial direction, and
The movable piece 112 is provided so as to be unable to rotate around the axis. Further, a screw hole 113 is provided at the axis of the moving piece 112.
The screw hole 113 is provided with a main body 108.
A screw portion of a bolt 115 having a hexagonal hole with a nominal diameter of 6 mm, which is inserted into a bolt through hole 114 penetrating through the shaft portion of the main body 108 and fastens the movable piece 112 and the second fitting portion 107 of the main body 108. It is provided to be able to enter. And the moving piece 112
A retaining ring 116 or a spring pin (not shown) is provided in a threaded part of the bolt 115 projecting from the screw hole 113 so as to be detachable.

Using the above-mentioned connecting tool 101, pipe structural material 1
02 and the joint 103, first, the tubular part 106 of the connecting tool 101 is inserted into the pipe structural material 102, the fitting part 105 is fitted into the end of the pipe structural material 102, and After the end surface of the pipe structural material 102 is brought into contact with one surface of the pipe 104, the bolt 115 is appropriately rotated to move the moving piece 112.
And the second fitting portion 107 are fastened, and the outer peripheral surface of the cylindrical portion 106 is formed by the wedge action in cooperation with the cylindrical portion 106 accompanying the movement of the moving piece 112 in the axial direction of the main body 108.
And the connecting tool 101 is assembled to the end side of the pipe structural material 102 (connected). Next, the connection tool 101
Of the connection 103 of the joint 103
a with the opening end abutting against the other surface of the base 104 of the connecting tool 101, the second fitting portion 10 is inserted through the adhesive liquid injection hole 117 penetrated at an appropriate position of the connecting tube portion 103a.
An adhesive solution is injected between the outer peripheral surface of 7 and the inner peripheral surface of the connecting tube 103a, and both surfaces are adhered and integrated to fix them. When a dope-like (dense, semi-molten) adhesive is used instead of the adhesive solution, at least the dope-like adhesive is applied to at least the inner peripheral surface side of the connection tube 103a in the joint 103. Is applied, the connecting tube 103a of the joint 103 and the second fitting portion 107 of the connecting tool 101
And are fitted. In this case, the adhesive liquid injection hole is unnecessary.

According to the connecting tool 101 having the above-described structure, the fitting portion 105 connected to the base 104 is formed in a plate-like or tubular shape on the inner surface side of the pipe structural material 102 so as to secure a required thickness. Base 1
Since it is integrally formed with the base member 04, sufficient strength such as crack resistance and shear strength can be secured in a portion from the base 104 to the fitting portion 105. Then, the fitting portion 1 of the main body 108
05 is not elastically deformed, and the entire outer peripheral surface or almost the entire outer peripheral surface of the fitting portion 105 and the inner peripheral surface of the end portion of the pipe structural member 102 are in close contact with each other and fitted. Since the entire outer peripheral surface and the inner peripheral surface of the pipe structural member 102 are strongly pressed by the wedge action of the tubular portion 106 and the moving piece 112, the connecting member 101 and the pipe structural member 102 are firmly and rigidly and sufficiently connected. be able to. Also, since the moving piece 112 and the main body 108 are always kept in a non-separable relationship, the moving piece 112 is detached from the main body 108 during assembly and disassembly of the frame structural material, and further, during maintenance and repair. It will not fall out inside or into the framework structure, making it impossible to remove or missing.

On the other hand, according to the connection structure between the connection tool 101 and the joint 103, the second
The second fitting portion 10 of the main body 108 is fitted to the fitting portion 107 with the connecting cylindrical portion 103a of the joint 103 fitted outside with the opening end thereof abutting against the other surface of the base 104 of the main body 108.
7 and the connecting cylindrical portion 103a of the joint 103, the second fitting portion 107 has no elastic deformation, and the second fitting portion 1
07 is bonded to the inner peripheral surface of the connecting tube 103a.
Since they are integrally fixed, the connecting tool 101 and the joint 103
Can be firmly and rigidly connected.

In each of the above embodiments,
In any case, the cross-section perpendicular to the axis of the pipe structural material, the connector and the joint,
Although a circular state is illustrated, it is needless to say that the present invention is not limited to this and can be easily applied to a square.

[0050]

As described above, according to the first connector of the present invention, the fitting portion connected to the base is required to be entirely plate-shaped or tubular-shaped on the inner surface side of the pipe structural material. Since it can be formed into an arbitrary shape with a sufficient thickness and is integrally connected to the base, sufficient strength such as crack resistance and shear strength can be secured in the part from the base to the fitting portion. . The fitting portion of the main body is not elastically deformed, and the entire outer peripheral surface or almost the entire outer peripheral surface of the fitting portion and the inner peripheral surface of the end portion of the pipe structural material are fitted in close contact with each other, while the cylindrical shape is formed. Almost the entire outer peripheral surface of the part or the moving piece and the inner peripheral surface of the pipe structural material are strongly pressed by the wedge action of the cylindrical part and the moving piece, so the connection tool and the pipe structural material must be connected firmly and rigidly. Can be. As a result, the connection between the pipe structural member and the connected member disposed on the end face side can be made strong and rigid enough. According to the second connector, the fitting portion connected to the base can be formed in an arbitrary shape by securing the required thickness by making the entire plate-like or tubular shape on the inner surface side of the pipe structural material. As a result, since it is integrally formed with the base, a sufficient strength such as crack resistance and shear strength can be secured in a portion from the base to the fitting portion. The fitting portion of the main body is not elastically deformed, and the entire outer peripheral surface or substantially the entire outer peripheral surface of the fitting portion and the inner peripheral surface of the end portion of the pipe structural material are in close contact with each other and fitted. Almost the entire outer peripheral surface of the tubular portion or the moving piece and the inner peripheral surface of the pipe structural material are strongly pressed by the wedge action of the tubular portion and the movable piece, so that the connecting member and the pipe structural material are firmly and rigidly connected sufficiently. be able to. According to the third connector, in addition to the operation and effect of the first or second connector, the moving piece detaches from the main body during assembly and disassembly of the structure, and further during maintenance and repair. It does not fall into the timber or frame structure, making it impossible to remove or missing.

On the other hand, according to the connection structure between the first connecting member and the joint, the connecting tube portion of the joint is provided on the second fitting portion of the main body of the connecting member, and the opening end thereof is provided on the other surface of the base of the main body. In a state where the second fitting portion and the connecting tubular portion are brought into contact with each other and fitted externally, the second fitting portion and the connecting tubular portion are screwed in the circumferential groove together with the fact that the second fitting portion has no elastic deformation. The joint can be firmly and sufficiently connected to the joint. Also, according to the connection structure between the second connecting member and the joint, the second structure of the main body of the connecting member is provided.
In a state in which the connecting tube portion of the joint is fitted to the fitting portion with the opening end thereof abutting on the other surface of the base of the main body, and the second fitting portion and the connecting tube portion are fitted to the outside, the second fitting portion and the connecting tube portion are connected to each other. Since the portion is bonded together with no elastic deformation, the connecting member and the joint can be firmly and sufficiently connected to the joint. Thus, the connecting member and the pipe structural member can be firmly and sufficiently connected to each other, and the connecting member and the joint can be strongly and sufficiently connected to each other. The connection with the joint as a connected member can be made strong and rigid enough. Eventually, the frame structure
Strong and sufficient rigidity can be obtained as a whole.

[Brief description of the drawings]

FIG. 1 is a front cross-sectional view (a cross-sectional view taken along line II in FIG. 2) showing a first embodiment of a connecting device according to the present invention.

FIG. 2 is a right side view of the connection tool of FIG. 1;

FIG. 3 is a perspective view of a structure using the connection tool of FIG. 1;

FIG. 4 is a front sectional view showing a second embodiment of the connector according to the present invention.

FIG. 5 is a front sectional view showing a third embodiment of the connector according to the present invention.

FIG. 6 is a left side view of the connection tool of FIG. 5;

FIG. 7 is a front sectional view (a sectional view along line VII-VII in FIG. 8) showing a fourth embodiment of the connecting device according to the present invention.

FIG. 8 is a right side view of the connection tool of FIG. 7;

FIG. 9 is a front view of a variable-angle joint connected to the connector of FIG. 7;

FIG. 10 is an exploded perspective view of the joint shown in FIG. 9;

FIG. 11 is a front sectional view of a 90 ° elbow-shaped joint connected to the connection tool of FIG. 7;

12 is a front view of a skeleton structure constructed using the connection tool of FIG. 7, the joint of FIG. 9, the joint of FIG. 11, and the like.

FIG. 13 is an exploded perspective view of a connection structure of a pipe structural member by the connection tool of FIG. 7 and the joint of FIG. 9;

FIG. 14 is a front sectional view of a connection structure of a pipe structural member using the connection tool of FIG. 7 and the joint of FIG. 9;

15 is a sectional view taken along line XV-XV in FIG.

FIG. 16 is a front sectional view of a connection structure of a pipe structural material using the connection tool of FIG. 7 and the joint of FIG. 11;

FIG. 17 is a front sectional view (a sectional view taken along line XVII-XVII) showing a fifth embodiment of the connecting device according to the present invention.

FIG. 18 is a right side view of the connection tool of FIG. 17;

FIG. 19 is a front sectional view showing a conventional connecting device.

FIG. 20 is a front sectional view showing another conventional connector.

FIG. 21 is a left side view of FIG. 20.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Connection tool 2 Pipe structural material 3 Leg plate (connected member) 4 Base 5 Fitting part 6 Cylindrical part 7 Main body 8 Tapered surface 9 Non-rotating ridge 10 Moving piece 11 Taper surface 12 Undercut 13 Slit 16 Bolt 21 Connecting tool 21 ′ Connector 22 sliding ball (connected member) 23 base 23 ′ base 24 fitting portion 25 cylindrical portion 26 main body 26 ′ main body 27 slit 28 tapered surface 29 undercut 30 tapered surface 31 moving piece 32 detent ridge 33 bolt 36 Second pipe structural member (connected member) 43 Cap nut 51 Connector 52 Pipe structural member 53 Joint 54 Base 55 Fitting portion 56 Cylindrical portion 57 Main body 58 Second fitting portion 59 Peripheral groove 60 Slit 61 Tapered surface 62 Tapered surface 63 Moving piece 64 Non-rotating ridge 67 Bolt 68 Joint 69 Connecting cylinder 72 First Segment 73 Connection tube 77 Second segment 80 Spring pin 81 Screw hole 82 Screw hole 83 Joint 84 Connection tube 85 Connection tube 87 Screw hole 88 Screw hole 93 Set screw 94 Set screw 101 Connector 102 Tube structure 103 Joint 104 Base 105 Fitting portion 106 Tubular portion 107 Second fitting portion 108 Main body 109 Slit 110 Tapered surface 111 Tapered surface 112 Moving piece 115 Bolt 116 Retaining ring 117 Adhesive liquid injection hole

[Procedure amendment]

[Submission date] April 24, 2001 (2001.4.2
4)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0004

[Correction method] Change

[Correction contents]

[0004] The connecting tool 121 includes a base washer 124.
The other with a leg plate 123 to the surface of contact with (leftward in FIG. 19), and inserting bolts 125 into the through holes of the leg plates 123 and the base washer 124 and the base washer 12
After the rubber bush 126 is externally fitted to a bolt 125 protruding from one side (the right side in FIG. 19) of the rubber bush 4, the rubber bush 126 presses a nut 127 with a washer on a thread portion of the bolt 125 protruding from the rubber bush 126. The rubber bush 126 is fitted into the pipe structural member 122 while being lightly screwed so as not to be screwed, and the end face of the pipe structural member 122 is brought into contact with the other surface of the washer 124 for the base. , The tool is turned in a direction in which the nut 127 with the washer and the washer 124 for the base approach each other, and the nut 127 with the washer and the washer 124 for the base approach each other, so that the rubber bush 126 is moved in the longitudinal direction. By compressing the tube structure material, the outer diameter of the tube structure material is increased and the outer peripheral portion thereof is pressed against the inner periphery of the tube structure material 122.
22 and the leg plate 123.

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0005

[Correction method] Change

[Correction contents]

In addition, a frame structure mainly using a pipe structural material, for example, an almost constant height parallel to the inclination angle of a stair or a slope (750 m from a tread surface of a stair or a floor of a slope).
A railing standing on a stair or a slope with a height of about 850 mm), or a nearly constant height from the floor (about 750 to 850 mm from the floor of the landing) at the landing of the stairs, along the wall It has a pipe structural material as a framed structural material in a handrail or the like attached to an appropriate structure (for example, a column, a rim, a stud, etc.) of a wall portion in parallel with a wall surface , and has a connecting tubular portion having the same outer diameter as this. As a connecting tool that connects the joint with the connecting part so that the connecting part has the same outer diameter as the connecting part,
20 and 21 are known.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0010

[Correction method] Change

[Correction contents]

[0010] Therefore, the present invention provides the connection between the connecting members arranged tubular structure material and on its end face, a firm, a main object thereof is to provide a connection tool that may be assumed rigid enough.
Another object of the present invention is to provide a connection structure between the connector and the joint which can firmly and sufficiently connect the connector and the joint.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0016

[Correction method] Change

[Correction contents]

[0016]

In the first connecting device, the fitting portion connected to the base is formed in an arbitrary shape while securing the required thickness by making the whole plate-shaped or cylindrical-shaped on the inner surface side of the pipe structural material. It can be installed integrally with the base. The fitting portion of the main body is not elastically deformed, and the entire outer peripheral surface or almost the entire outer peripheral surface of the fitting portion and the inner peripheral surface of the end portion of the pipe structural material are fitted in close contact with each other, while the cylindrical shape is formed. a Department or the inner peripheral surface of substantially the entire outer peripheral surface and the tubular structure material of the moving piece is pressed against strongly by the wedge action between the tubular portion and the moving piece.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0017

[Correction method] Change

[Correction contents]

In the second connector, the fitting portion connected to the base is formed in an arbitrary shape by securing the required thickness by making the entire plate-like or tubular shape on the inner surface side of the pipe structural material. It can be installed integrally with the base. And
The fitting portion of the main body and the second fitting portion are not elastically deformed, and the entire outer peripheral surface or substantially the entire outer peripheral surface of the fitting portion and the inner peripheral surface of the end portion of the pipe structural material are in close contact and fitted. On the other hand, the inner peripheral surface of substantially the entire outer peripheral surface and the tubular structure material of the tubular portion or the moving piece is pressed against strongly by the wedge action between the moving piece and the tubular portion.

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0025

[Correction method] Change

[Correction contents]

According to the connecting device 1 having the above-described structure, the fitting portion 5 continuously provided to the base 4 is provided on the inner surface side of the pipe structural member 2.
And can be formed into any shape to ensure required thickness and overall plate-like or tubular, since it is continuously provided on the base 4 integral with the portion extending fitting portion 5 from the base 4, resistance Sufficient strength such as crack strength and shear strength can be secured. And the fitting part 5 of the main body 7 is not elastically deformed.
The entire outer peripheral surface or substantially the entire outer peripheral surface of the fitting portion 5 and the pipe structural member 2 are fitted in close contact with the inner peripheral surface of the end portion, while the substantially entire outer peripheral surface of the movable piece 10 and the inner peripheral surface of the pipe structural member 2 are fitted. The surface is strongly pressed by the wedge action of the cylindrical portion 6 and the moving piece 10, so that the connecting tool 1
And the tubular structural member 2 can be firmly and rigidly connected sufficiently, so that when an external force acts and loads on the couch 18 as a structure, the couch 18 is not easily deformed or distorted. be able to. The moving piece 10 and the main body 7
Is always kept in a non-separable relationship, so that during the assembly and disassembly of the structural body, and further during maintenance and repair, the moving piece 10 is detached from the main body 7 and falls into the pipe structural material 2 so that the take-out can be performed. It will not be disabled or missing.

[Procedure amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0037

[Correction method] Change

[Correction contents]

FIG. 9 and FIG.
FIG. 2 is a front view and an exploded perspective view of a variable-angle joint connected to 1; The joint 68 is made of an aluminum die-cast product, and has a bottomed short cylindrical connecting tube portion 69 into which the second fitting portion 58 of the connecting tool 51 is tightly fitted at one end (the left end in FIG. 9). At the other end (the right end in FIG. 9), a substantially hemispherical convex portion 70 having a curvature radius substantially equal to the radius of the cylindrical portion 69 is continuously provided, and the bottom surface is a curved surface having the same radius of curvature as the convex portion 70. the engaging groove 71 whose center of curvature coincides with the center of curvature of the convex portion 70, the cylindrical portion 69 in the axial direction of the cylindrical portion 69 and the convex portions 7
The first segment 72 is formed so as to straddle 0 and is also made of an aluminum die-cast product, and the second fitting portion 58 of the connecting tool 51 is closely fitted to one end (the right end in FIG. 9). At the other end (the left end in FIG. 9) of the cylindrical connecting tubular portion 73, the diameter (diameter line) of the reduced diameter is gradually reduced so that the upper side in FIG. A substantially triangular diameter-reduced cylinder portion 74 that forms an angle of about 45 ° with the axis is continuously provided, and an end surface 74 of the diameter-reduced cylinder portion 74 where the diameter is reduced.
a, and an outer surface of a bottom wall 75 for closing the opening of the diameter-reduced portion of the reduced-diameter tube portion 74 so as to be able to engage with a part of the convex portion 70 of the first segment 72; A plate-shaped connecting portion 76 having a curved surface that can be engaged with the bottom surface of the engaging groove 71 of the first segment 72 extending around a peripheral surface of about 2/3 circle, A second segment 77 extending in the axial direction and projecting in the axial direction of
6 is engaged, and through a spring pin (connecting pin) 80 inserted into pin insertion holes 78 and 79 passing through the centers of curvature of the convex portion 70 and the connecting portion 76, an angle of about 90 to 180 ° is obtained. It is connected so that it can be bent in the range. 9 and 10
81 and 82 are the first and second segments 7, respectively.
With the screw holes penetrating through the cylindrical portions 69 and 73 of the connecting member 51, the cylindrical portions 69 and 73 are
Each opening end is provided at a position corresponding to the circumferential groove 59 of the second fitting portion 58 in a state where the opening end is in contact with the other surface of the base 54 of the main body 57 of the connecting tool 51 and externally fitted thereto.

[Procedure amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0039

[Correction method] Change

[Correction contents]

Using the above-mentioned connecting tool 51 , the pipe structural member 5
2. Variable angle joint 68 and 90 ° elbow joint 8
12, a frame having a substantially constant height (about 750 to 850 mm from the floor of the passage and the tread of the stairs) parallel to the floor of the passage 90 and the inclination angle of the stairs 91 as shown in FIG. In order to construct the handrail 92 as a structure, first, as shown in FIGS. 13, 14, 15 and 16,
The tubular parts 56 of the connecting tool 51 are inserted into both ends of three pipe structural members 52 which are made of stainless steel pipes and which are arranged at the upper end portions of the four tube structural members 52 serving as pillars and which serve as handrails. At the same time, the fitting portions 55 are fitted into both ends of the pipe structural member 52, and the end surface of the pipe structural member 52 is brought into contact with one surface of the base 54. 2 with the fitting portion 58, and the outer peripheral surface of the tubular portion 56 is moved to the inner periphery of the pipe structural member 52 by the wedge action in cooperation with the tubular portion 56 accompanying the movement of the moving piece 63 in the axial direction of the main body 57. The connecting tool 1 is assembled (connected) on the end side of the pipe structural material 52 by pressing against the surface.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification FI FI Theme coat ゛ (Reference) F16B 12/44 F16B 12/44 C F-term (Reference) 2E101 KK07 KK08 3J023 EA01 FA03 GA03 3J024 AA04 AA12 AA33 BB04 CA05 CA24 3J039 AA01 AB04 BB01 DA01

Claims (5)

[Claims] 1. A plate-like base having the same contour as the pipe structural material, which connects the pipe structural material and a member to be connected disposed on the end face side thereof. And a fitting portion which is coaxially connected to the end portion of the pipe structural material, and a cylindrical portion which is coaxially connected to the fitting portion and which is inserted into the pipe structural material. The main body made of metal or synthetic resin and the cylindrical portion of the main body are non-rotatably fitted to each other, and the opening of the tube structural material is formed by the cooperative wedge action of the cylindrical portion accompanying the movement of the main body in the axial direction. With the end in contact with one surface of the base of the main body, the side that contacts the inner peripheral surface of the pipe structural material with the cylindrical portion is pressed against the inner peripheral surface of the pipe structural material, and the main body and the pipe structure are pressed. A moving piece made of metal or synthetic resin for fixing the material, and one bolt or a set of bolts for fastening the moving piece and the connected member;
A connection tool comprising a nut. 2. A pipe connecting member for connecting a pipe structural member and a joint disposed on an end face side thereof and having a connecting cylindrical portion having the same contour as the pipe structural member. A plate-shaped base having the same contour as the above, a fitting portion coaxially connected to the base on one surface of the base and closely fitted to an end of the pipe structural material, and a coaxial shape with the fitting portion at the fitting portion. And a cylindrical part inserted into the pipe structural material, and coaxially connected to the other surface of the base coaxially with the base, fitted into the connecting cylindrical part of the joint and fixed appropriately. A metal or synthetic resin main body comprising a cylindrical or columnar second fitting portion, and a wedge which is non-rotatably fitted to the cylindrical portion of the main body and cooperates with the cylindrical portion accompanying the movement of the main body in the axial direction. By the action, in a state where the open end of the pipe structural material is in contact with one surface of the base of the main body, the side contacting the inner peripheral surface of the pipe structural material with the cylindrical portion, A metal or synthetic resin moving piece that is pressed against the inner peripheral surface of the pipe structural material to fix the main body and the pipe structural material, and one bolt or 1 that fastens the moving piece to the second fitting portion of the main body. A connector comprising a set of bolts and nuts. 3. The connecting device according to claim 1, further comprising a detachment preventing means for preventing the moving piece from detaching from the main body. 4. A peripheral groove is formed on an outer periphery of a second fitting portion of a main body of the connecting device according to claim 2 or 3, and an opening end of a connecting tubular portion of a joint is formed on the other surface of a base of the main body. In the abutted state, a set screw is screwed into a screw hole penetrating through the connecting cylinder portion of the joint corresponding to the circumferential groove of the second fitting portion, and the tip of the set screw is placed around the second fitting portion. A connection structure between a connection mediating device and a joint, wherein the connection engagement tool is engaged with the groove, the set screw is tightened, and the second fitting portion and the connection tubular portion of the joint are fixed. 5. The outer periphery of a second fitting portion of the main body in a state in which the opening of the connecting tube portion of the joint is brought into contact with the other surface of the base of the main body in the connecting device according to claim 2 or 3. A connection structure between a connection tool and a joint, wherein the surface and the inner peripheral surface of the connection tube portion of the joint are adhered, and the second fitting portion and the connection tube portion of the joint are fixed.