JPH112217A - Pipe connecting joint - Google Patents

Abstract

PROBLEM TO BE SOLVED: To maintain connected pipes linearly by arranging a block body between a drop part and a ring body in the substantially central part of a short round pipe which can be inserted into a pair of round pipes to be connected and is provided with engaging notches, which are engaged with engaging rods arranged inside the round pipes closely to theirs end parts, in both ends and allowing the block body to freely move in the circumferential direction. SOLUTION: Insertion of one side of a short round pipe 4 is carried out until a ring body 5 is butted to one end of one round pipe 1 to be connected, and insertion of the other side of the short round pipe 4 is carried out until the ring body 5 is butted to one end of the other round pipe 2, and then, engaging rods 1a, 2a of the round piper 1, 2 are engaged in L-shaped engaging notches 3 in both ends of the short round pipe 4. In addition, a bolt 8 screwed into a dcrew hole 7a in a block body 7 is turned so as to be fastened, and the block body 7 is moved in the circumference direction of the ring body 5 between a drop part 6 and the ring body 5 so as to be brought into tight contact with the inside faces of the round pipes 1, 2. In this way, the round pipes 1, 2 connected together are prevented from pluy, and very firm connection can be accomplished.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint for connecting pipes such as a round pipe for a temporary scaffold used at a construction site.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS.
Two large and small troughs having substantially L-shaped engaging notches 13a and 14a at both ends for engaging with engaging rods 10a and 11a attached to the insides near the ends of 0 and 11 respectively. The plates 13 and 14 are opposed to each other, and a ring body 15 is disposed at the center thereof.
Is fixed to the outer periphery of A through hole 15a is provided in the ring body 15, and a through hole 13a is provided in the gutter-shaped plate 13 so as to face the through hole 15a.
3a and the bolt 16
The nut 17 is screwed into the nut. Further, the lower end of the bolt 16 is loosely fitted to the gutter-shaped plate 14 and the ring body 15, and the rotation of the bolt 16 causes the nut 17 to move up and down. Are movable in the circumferential direction of the ring body 15.

In order to use the conventional pipe connecting joint constructed as described above, first, a round pipe 1 to be connected is used.
0 and 11 are inserted from both ends, and round pipes 10 and 1 are inserted.
1 engaging rods 10a, 11a with their substantially L-shaped engaging notches 1
3a and 14a. Next, by rotating the bolt 16 to move the nut 17 up and down, and moving the gutter plate 13 in the circumferential direction of the ring body 15, the inner surfaces of the round pipes 10, 11 connecting the gutter plate 13 are formed. Crimp. Therefore, the round pipes 10 and 11 connected in this way do not rattle, and the connection becomes very firm.

[0004]

However, in the above conventional joint for connecting pipes, two large and small gutter-like plates 1 are used.
3 and 14, the strength against bending force in the longitudinal direction is low, and there is a problem that the connected round pipes 10 and 11 may not be able to maintain a straight state.

In the above-mentioned conventional joint for connecting pipes, by increasing the thickness of the trough-like plates 13 and 14, the strength against bending force in the longitudinal direction can be increased. There is a problem that the weight of the pipe itself increases, and it is inconvenient to connect a pipe for a temporary scaffold or the like, which is loaded by connecting a large number of pipes.

Accordingly, the present invention is to solve the problem of the above-mentioned conventional joint for connecting a pipe, and to increase the strength against bending force in the longitudinal direction without increasing the weight of the joint for connecting a pipe. High, so that the connected pipes can maintain a straight state,
Moreover, it is an object of the present invention to provide a joint for connecting pipes suitable for connecting a pipe for a temporary scaffold or the like to which a load is applied by connecting a large number of pipes.

[0007]

Therefore, the pipe connecting joint according to the present invention has a diameter enabling insertion into the round pipes 1 and 2 to be connected, and is provided inside the round pipes 1 and 2 near the ends thereof. The engagement rods 1a respectively attached,
The ring body 5 is fixed to the outer periphery of the short round pipe 4 so that a substantially central portion of the short round pipe 4 provided with engagement notches 3 for engaging with the 2a at both ends is surrounded by a ring body 5. Further, a settling portion 6 is formed at a part of a substantially central portion of the short round pipe 4, and a block having a curved surface whose outer surface is in contact with the inner surfaces of the round pipes 1 and 2 between the settling portion 6 and the ring body 5. The block 7 is interposed between the settling portion 6 and the ring 5 by a bolt 8 screwed from a through hole 5a provided in the ring 5 into a screw hole 7a provided in the block 7 with the body 7 interposed therebetween. Is movable in the circumferential direction.

The settling portion 6 in the pipe connecting joint according to the present invention can be formed by forming a hole in the short round pipe 4 or by denting the short round pipe 4.

The pipe connecting joint of the present invention constructed as described above uses a short round pipe 4 instead of the conventional gutter-like plate, which is a plate material. The strength with respect to the bending force in the length direction is high.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a joint for connecting pipes according to an embodiment of the present invention.

As shown in FIGS. 1 to 8, the pipe connecting joint according to the present invention has a diameter capable of being inserted into the circular pipes 1 and 2 to be connected. Engagement rods 1a, 2 attached inside
a ring-shaped body 5 surrounding a substantially central portion of a short round pipe 4 provided with substantially L-shaped engagement notches 3 for engaging with the ring body 5. It is fixed to the outer periphery of the pipe 4.

The short round pipe 4 has a settling portion 6 formed at a part of a substantially central portion thereof. Between the settling portion 6 and the ring body 5, a curved surface whose outer surface is in contact with the inner surfaces of the round pipes 1 and 2 is formed. And a block body 7 having the same.

Further, the ring body 5 is provided with a through hole 5a, and the block body 7 is provided with a screw hole 7a. Then, the screw hole 7 of the block body 7 is inserted through the through hole 5a of the ring body 5.
By screwing a bolt 8 into a, and by tightening or loosening the bolt 8, the block 7 can be freely moved in the circumferential direction of the ring 5 between the settling portion 6 and the ring 5. The lower end of the bolt 8 is in contact with the opposite wall of the short round pipe 4 as shown. Further, it is preferable that the ring body 5 has substantially the same diameter as the round pipes 1 and 2 to be connected since the ring pipes 1 and 2 are flush with the round pipes 1 and 2 at the connecting portion.

The settling portion 6 can be formed by forming a hole in the short round pipe 4 as shown in FIG. 2, or formed by recessing the short round pipe 4 as shown in FIG. . In addition, when the settling portion 6 is formed as a hole formed in the short round pipe 4, the strength of the short round pipe 4 may be slightly reduced due to the presence of the hole, and therefore the short round pipe 4 is recessed. It is more preferable that Also,
When the settling portion 6 is formed by recessing the short round pipe 4, a through hole 9 is provided in the settling portion 6 to penetrate the bolt 8, and the lower end of the bolt 8 is connected to the short round pipe 4. What is necessary is just to make it contact the opposite wall.

In order to use the joint for pipe connection of the present invention constructed as described above, first, a short round pipe 4 is used.
Is inserted into one end of one of the round pipes 1 to be connected until the ring body 5 abuts thereon, and the other side of the short round pipe 4 is inserted into one end of the other round pipe 2 to be connected to the ring body 5. Until it hits. Then, the engaging rods 1a, 2a of the round pipes 1, 2 to be connected are respectively engaged with the substantially L-shaped engaging notches 3 provided at both ends of the short round pipe 4. Further, by turning and tightening the bolt 8 screwed into the screw hole 7a of the block body 7, the block body 7 is moved in the circumferential direction of the ring body 5 and pressed against the inner surfaces of the connected round pipes 1 and 2 (FIG. 3, see FIG. 7).

In this way, the connected round pipes 1,
2 does not rattle and its connection is very solid.

In order to disconnect the round pipes 1 and 2,
By turning and loosening the bolt 8 screwed into the screw hole 7a of the block body 7, the block body 7 is moved toward the center of the ring body 5, and the pressure contact with the inner surfaces of the round pipes 1 and 2 is released (FIGS. 4 and 4). 8). Further, the engagement between the engagement rods 1a and 2a of the round pipes 1 and 2 and the substantially L-shaped engagement notches 3 provided at both ends of the short round pipe 4 is released. And
The pipes 1 and 2 may be pulled out from both sides of the pipe 4.

[0018]

The joint for connecting pipes of the present invention is
Because it is configured as described above, it is possible to increase the strength against the bending force in the length direction without increasing the weight of the pipe connecting joint itself, and the connected pipe maintains a straight state It is suitable for connection of pipes for temporary scaffolds and the like, which are loaded by connecting a large number of pipes.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a joint for connecting a pipe according to the present invention.

FIG. 2 is an exploded perspective view of the pipe connecting joint of the present invention shown in FIG.

FIG. 3 is a sectional view showing a state in which a bolt screwed into a block body is tightened in the pipe connecting joint of the present invention shown in FIG. 1;

FIG. 4 is a sectional view showing a state in which a bolt screwed into a block body is loosened in the joint for pipe connection of the present invention shown in FIG. 1;

FIG. 5 is a perspective view showing another embodiment of the pipe connecting joint of the present invention.

FIG. 6 is an exploded perspective view of the pipe connecting joint of the present invention shown in FIG. 5;

7 is a cross-sectional view showing a state where a bolt screwed into a block body is tightened in the pipe connecting joint of the present invention shown in FIG. 5;

8 is a cross-sectional view showing a state in which a bolt screwed into a block body is loosened in the joint for pipe connection of the present invention shown in FIG.

FIG. 9 is a perspective view showing an example of a conventional pipe connection joint.

FIG. 10 is a central vertical sectional view of a conventional pipe connection joint.

[Description of Signs] 1 Round pipe 1a Engagement rod 2 Round pipe 2a Engagement rod 2b Side 3 Engagement notch 4 Short round pipe 5 Ring body 5a Through hole 6 Settling part 7 Block body 7a Screw hole 8 Bolt

Claims (3)

[Claims] An engaging rod (1a, 1a, 2a) having a diameter capable of being inserted into the connecting round pipes (1, 2) and being attached to the inside of the round pipes (1, 2) near the ends thereof.
The ring body (5) is surrounded by a ring body (5) so as to surround a substantially central portion of a short round pipe (4) provided with engagement notches (3) at both ends for engaging with the ring body (5). It is fixed to the outer circumference of the short round pipe (4), and furthermore, a settling part (6) is formed at a part of the substantially central part of the short round pipe (4), and between the settling part (6) and the ring body (5). And a through-hole (5) formed in the ring body (5) with a block body (7) having a curved surface in contact with the inner surface of the round pipe (1, 2) interposed therebetween.
The block body (7) is moved between the settling portion (6) and the ring body (5) by the bolt (8) screwed from (a) into a screw hole (7a) provided in the block body (7). The joint for connecting pipes, characterized in that the joint is movable in the circumferential direction. 2. The joint according to claim 1, wherein the settling portion is formed by drilling a hole in a short round pipe. 3. The joint according to claim 1, wherein the settling portion is formed by recessing a short round pipe.