KR102351804B1 - Clamp for pipe connection - Google Patents

Abstract

The present invention relates to a clamp for connecting pipes. The clamp (100) of the present invention is divided into a main body (110) and a pair of sub bodies (120, 130). An objective of the present invention is to provide the clamp for connecting pipes, having excellent airtightness while assembling the pipes more easily.

Description

Clamp for pipe connection

The present invention relates to a clamp for pipe connection, and more particularly, it has excellent airtightness, fixing power and rigidity in a pipe connection state, and was invented to significantly improve the reliability and durability of the product.

In general, a water pipe is buried underground in order to supply water to each household.

In addition, the sewage pipe is connected to several pipes for discharging rainwater or sewage generated in the home again through an external water collecting tank.

These water and sewage pipes are connected through a connecting pipe and a clamp.

Conventionally, the connector for interconnecting the pipe combines the packing surrounding the outer diameter of the pipe on both sides, and by placing clamps on both sides of the connector body, press the clamp by the nut fastened with the bolt, so that the airtightness can be maintained through the packing. is configured to

The clamp is divided into a semi-circular shape in an approximately ring shape, and one side is movably hinged with a pin, and the other side of the pin is configured to be tightened through a bolt and a nut.

However, in the above-described conventional clamp for sewage pipe, airtightness is maintained only by pressing the packing surrounding the outer diameter of the pipe by screwing the bolt and the nut.

Therefore, the ability to maintain airtightness at the connection part between the pipes and the connecting pipe is weakened, so it is difficult to respond to the pipe sagging (position change) or continuous vibration transmission due to the change of the ground in the installed state and the diameter change due to the change of season. There is a high risk of damage or leakage.

In addition, most of the pipe leaks occurring in the actual phenomenon are occurring in the connection pipe due to the above-described cause.

For example, when an external shock and vibration occurs due to an earthquake or the movement of a heavy vehicle, a gap is created in the pipe connection or the vicinity of the connection is damaged so that the debris contained in the wastewater cannot pass through and is discharged by blocking the inside of the pipe. Oh, there is a case where the wastewater backflows.

In addition, the foul odor generated from the decayed sewage and wastewater was the cause of the inflow into the home along the drain pipe.

Domestic Patent Registration Registration No. 10-0997534 (Registration Date November 24, 2010) Domestic Patent Registration Registration No. 20-0479920 (Registration Date March 16, 2016) Domestic utility model registration number registration number 20-0481046 (registration date August 02, 2016)

SUMMARY OF THE INVENTION The present invention is to solve this problem, and an object of the present invention is to provide a clamp for pipe connection having excellent airtightness while assembling pipes more easily.

Another object of the present invention is to provide a clamp for connecting a pipe capable of maintaining an airtight state normally even when vibration or a large external shock is generated.

Another object of the present invention is to provide a clamp for pipe connection that can stably maintain the coupling force with the pipe and the packing for a long time even after a long time elapses from the installation state, and the product's own strength and clamping force are significantly improved to provide excellent durability and reliability. have.

In order to achieve this object, in the configuration of the present invention, the pipes (1) are respectively fitted inside both sides of the connection pipe (10), and the pipe (1) and the packing groove (12) of the protrusion (11) provided on the inlet side The main body 110 in an arc shape in which the opening 111 is opened so that the compression ring 20 and the packing 30 are accommodated so as to be in close contact with the bolt 2 and the bolt 2 is clamped through the bolt 2 and,
The clamp ( 100) according to
In the sub-body 120 and 130, the connecting bars 122 and 132 are extended along the arc direction formed in the state connected to the main body 110, and the end positions of the connecting bars 122 and 132 are moved to the sub-body 120, 130. The hook projections 123 and 133 are integrally molded,
A connection passage 113 for accommodating the connection bars 122 and 132 inside is dug in the main body 110, and the hook protrusions 123 and 133 are fitted to the ends of the main body 110, and a fastening hole 112 for coupling. ) is provided, and
The contact surface (T) of the sub-body (120, 130) connected while forming an arc with the main body (110) is an extension line intersection (C2) of the main body (110) and the sub-body (120, 130) of the arc center point ( It is characterized in that it is formed to be inclined toward the eccentric position while maintaining a predetermined distance (L) to the inside of the main body 110 with respect to C1).

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The hook protrusions 123 and 133 are molded into a rectangular prism shape, and the pair of sub-bodies 120 and 130 are assembled to the main body 110 by maintaining a gap D so that they are tightened. is composed

It is preferable that the angle to the boundary position where the main body 110 is connected to the sub-body 120 and 130 is 240 degrees.

A stop ring 40 is further installed between the compression rings 20 inside the clamp 100 to fix the pipe 1 .

According to the present invention, the clamp is divided into the main body and the sub-body, so that it can be mounted firmly and easily while maintaining airtightness with the pipes.
In particular, it is possible to obtain the effect of further improving the rigidity when the bolt and the bolt are tightened by pulling the sub-body by screwing.

In addition, a stop ring is provided on the inner surface of the clamp to contact the pipe to prevent movement in the departure direction, so that the pipe fixing force is very excellent, and even if vibration or a large external shock occurs, it is possible to maintain the airtight state normally.

In addition, in the installation state where the pipe is connected, the pressure ability and pipe fixing power through the compression ring are excellent, and even after a long period of time, the coupling force with the pipe and the compression ring can be stably maintained for a long time, so the durability and reliability of the product are excellent. .

1 is a perspective view showing a state in which the clamp of the present invention is disassembled from the main body to the sub-body.
Figure 2 is a perspective view showing a state in which the clamp of the present invention is mounted on the upper part of the connector.
Fig. 3 is a plan view of Fig. 1;
4 is a cross-sectional view of the clamp of the present invention in a state in which the main body and the sub-body are assembled.
5 is an exploded perspective view showing a state in which the clamp and the stop ring of the present invention, and the packing and the gasket are sequentially inserted into the connecting pipe and assembled;
6 is an exploded cross-sectional view of FIG.
Figure 7 is a longitudinal cross-sectional view of a state in which the clamp of the present invention is coupled to the pipe through the connecting pipe.
8 is an enlarged cross-sectional view of part A of FIG. 7 ;
Fig. 9 is a plan view of Fig. 2;

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings.

However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only these embodiments allow the disclosure of the present invention to be complete, and are common in the art to which the present invention pertains. It is provided to fully inform those with knowledge of the scope of the invention, and the present invention is only defined by the scope of the claims.

In addition, the terminology used herein is for the purpose of describing the embodiments and is not intended to limit the present invention.

In this specification, the singular also includes the plural unless specifically stated otherwise in the phrase. As used herein, "comprises" and/or "comprising" does not exclude the presence or addition of elements other than those mentioned.

Unless otherwise defined, all terms (including technical and scientific terms) used herein may be used with the meaning commonly understood by those of ordinary skill in the art to which the present invention belongs.

Hereinafter, in order to describe the present invention in more detail, embodiments according to the present invention will be described in more detail with reference to the accompanying drawings.

The clamp 100 for pipe connection provided in the present invention is divided and molded into one main body 110 and two sub bodies 120 and 130, respectively, and then the bolt 2 and the nut are connected to each other. (3) It is possible to significantly improve the tightening capacity and pipe fixing power by fastening through (3).

The connecting pipe 10 is penetrated with a dimension corresponding to the outer diameter of the pipe 1 to which the inner diameter is connected, and a locking protrusion 15 is provided at approximately the center. make it possible

In addition, at both inlet portions of the connection pipe 10, a space is provided in which the compression ring 20 and the packing 30 can be respectively connected to the inner packing groove 12 of the protrusion 11, which is expanded in diameter to the same thickness. do.

The packing 30 has a plurality of wing portions made of a rubber material or a silicone material pressed against the outer diameter of the pipe 1 to maintain airtightness.

In addition, a compression ring 20 made of a synthetic resin material (PVC-based material) is installed on the outside of the packing 30, and the clamp 100 of the present invention is tightened through the bolt 2 and the nut 3 It is closely compressed with the pipe (1) by the tightening force to maintain airtightness.

The upper portion of the compression ring 20 is formed to have an inclined surface.

In the installed state of the clamp 100 , the inner upper surface is in contact with the compression ring 20 , and the inner lower surface is in contact with the lower surface of the inclined protrusion 11 .

Then, in a state in which the clamp 100 is divided into the main body 110 and the sub-body 120 and 130, the bolt 2 is passed through the holes 121 and 131, the nut 3 and the screw By being fastened, the compression ring 20 and the packing 30 that are in close contact with the outside of the pipe 1 can be tightened.

The inner upper surface and the lower surface of the clamp 100 are respectively inclined cross-sections as shown in FIGS. 6 to 10 .

That is, since the inner upper surface of the clamp 100 and the upper surface of the compression ring 20 are in contact with each other in an inclinedly molded state, when the bolt 2 and the nut 3 are tightened by screwing, the clamp 100 ) gradually presses the compression ring 20, the pressurized compression ring 20 presses the packing 30 located below it, and the pressurized packing 30 has its wings in close contact with the pipe 1 pressed to a state of

Therefore, it is possible to maintain airtightness and watertightness by blocking the gap between the pipe 1 and the connection pipe 10 .

On the other hand, the clamp 100 of the present invention is made of a PVC-based synthetic resin material, the main body 110 having an arc shape in which the opening 111 is opened, and is located in the opening 111 and the bolt 2 is passed through it. It is molded in a state of being divided into a pair of sub-bodies 120 and 130 in which holes 121 and 131 for fastening with the nut 3 are drilled, respectively.

As shown in the drawing, a fastening hole 112 is drilled in the main body 110 at a predetermined distance from the end face in order to couple the divided main body 110 and the sub-body 120 and 130 to each other.

In addition, hook protrusions 123 and 133 that are fitted into the fastening hole 112 at the end positions of the connecting bars 122 and 132 are integrally provided on the sub-body 120 and 130 .
Here, the connecting bars 122 and 132 are extended and molded in an arc shape along a circumference formed in a state in which the sub-body 120 and 130 are connected to the main body 110 .
The hook protrusions 123 and 133 are formed in a rectangular prism shape, and the fastening hole 112 in which the hook protrusions 123 and 133 are inserted and assembled is also square with a size corresponding to the hook protrusions 123 and 133. pierced in the shape of a column.
A connection passage 113 for accommodating the connection bars 122 and 132 inside is dug in the main body 110, and the connection passage 113 has a size corresponding to the connection bars 122 and 132 and In the shape of the sub-body 120, 130 is formed concavely toward the inside in a circular arc shape along a circumference formed in a state in which the main body 110 is connected.

Accordingly, the clamp 100 of the present invention is formed by inserting the hook protrusions 123 and 133 provided at the ends of the sub-body 120 and 130 into the fastening hole 112 of the main body 110 and coupling them. It is possible to achieve a round circular shape as a whole.
In addition, the contact surface T is formed to be inclined between the main body 110 and the sub-body 120 and 130 connected while forming an arc.
When the contact surface T is shown by imagining the intersection point C2 of the two extension lines, the main body 110 with respect to the arc center point C1 of the main body 110 and the sub-body 120 and 130 as shown in FIG. 9. It is formed to be inclined toward the eccentric position while maintaining a predetermined distance (L) to the inside of the.
Therefore, the contact surface length is further improved compared to the case in which the contact surface T faces the circular arc center point C1, and the bolt 2 and the nut 3 are screwed together, thereby pulling and tightening the sub-body 120 and 130. It is possible to obtain the effect of further improving the rigidity when it is lifted.
The main body 110 and the sub-body 120, 130 are made of synthetic resin material to retain some elasticity.

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In order to connect the pipe 1 using the clamp 100 of the present invention configured as described above, first, the pipe 1 is connected to the inside of the connecting pipe 10 through the opening 111 of the main body 110 and , the compression ring 20 and the packing 30 are inserted into the inner packing grooves 12 of the protrusions 11 provided at both ends of the connection pipe 10, respectively, and assembled.

In this state, the opening 111 of the main body 110 is widened, and the one side protrusion 11 of the connecting pipe 10 is inserted into the assembly, and then the hook protrusions 123 of the sub bodies 120 and 130 are assembled. 133) are inserted into the fastening hole 112 to be coupled.

Here, the sub-body 120, 130 made of a pair maintains the distance (D) in the assembled state to the main body (110).

Accordingly, when the bolt 2 penetrates through the holes 121 and 131 drilled in the sub-body 120 and 130 and is screwed with the nut 3, the sub-body 120 and 130 and the main body 110 are screwed. ) is the clamping force acting toward the inner diameter, respectively.

Here, the sub-body 120 and 130 are connected to the main body 110, and the inner diameter is reduced as a whole, and the compression ring 20 and the packing 30 are pressed, and the pipe 1 inserted therein is tightened. to keep confidentiality.

The angle of the main body 110 to the boundary positions 115a and 115b where the main body 110 is connected to the sub-bodies 120 and 130 spreads the main body to the outside of the connecting pipe 10 to increase the binding elastic force and tightening strength. In consideration of this, between 220 and 260 degrees is suitable. (FIG. 3)

According to the test results of the tightening strength test, preferably, 240 degrees was the most suitable result.

Meanwhile, a stop ring 40 is further installed between the compression rings 20 inside the clamp 100 to fix the pipe 1 .

The inside of the stop ring 40 has teeth repeatedly formed in a state in which the pipe 1 is bent in a direction to be fitted into the connecting pipe 10 as shown in FIG. 8 .

Therefore, the assembly of the pipe 1 by the stop ring 40 is easy, while the disengagement of the pipe 1 in the direction of disengagement is suppressed by the teeth to prevent the disengagement of the pipe 1 .

In addition, even when vibration or shock is transmitted, it is possible to prevent the pipe 1 from flowing or being separated.

Therefore, even if the shock is transmitted due to vibration or other causes, it is possible to maintain the airtight state normally by preventing a gap from occurring between the clamp 100 and the pipe 1 .
When describing the assembly process of installing the pipe 1 so as to have watertightness and airtightness at both ends of the connection pipe 10 using the clamp 100 according to the present invention, the pipe 1 in the connection pipe 10 is Before installation, the packing 30, the compression ring 20, and the stop ring 40 are sequentially installed, respectively, and the pipe 1 is assembled to the connector 10 to install the clamp 100 according to the present invention. .
The clamp 100 installed as described above presses the stop ring 40 and the compression ring 20 assembled sequentially, and the pressurized stop ring 40 is a pipe 1 having teeth installed on its inner circumferential surface. The outer circumferential surface is held in an annular shape, and the pressing force applied to the compression ring 20 is transmitted to the packing 30 so that the wing portion of the packing 30 is pressed against the outer circumferential surface of the pipe 1 so as to have watertightness and airtightness. It can be stably maintained even after a long period of time by securing the bonding strength.

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The present invention described above is not limited by the above-described embodiments and drawings, and it is common knowledge in the technical field to which the present invention pertains that various substitutions, modifications and changes are possible without departing from the technical spirit of the present invention. It will be clear to those who have

1 - pipe
10 - connector 20 - compression ring
30 - packing 40 - stop ring
100 - clamp
110 - main body
111 - opening 112 - fastening hole
120,130 - sub body
121,131 - hole 122,132 - connecting bar
123,133 - hook projection

Claims (4)

The pipes (1) are respectively fitted inside both sides of the connection pipe (10), and the compression ring (20) and the packing (30) are placed in close contact with the pipe (1) in the packing groove (12) of the protrusion (11) provided on the inlet side. It is accommodated and clamped through the bolt (2) and the nut (3), but the opening 111 is opened in the center, and the fastening hole 112 and the connection passage 113 are formed at both ends thereof. , exists as the main body 110 in the shape of an arc as a whole,
It is located in the opening 111, the holes 121 and 131 are drilled for fastening the bolt 2 and the nut 3, and the connecting bars 122 and 132 are formed extending along the arc direction. And, it is divided into a pair of sub-body 120, 130 including hook projections 123 and 133 formed at the end positions of the connecting bars 122 and 132,
In the clamp 100 in which the hook projections 123 and 133 of the sub-body 120 and 130 are fitted and coupled to the fastening hole 112 of the main body 110,
The opening 111 of the main body 110 provides a passage through which the connector 10 can be inserted and assembled,
The angle from the main body 110 to the boundary positions 115a and 115b where the main body 110 is connected to the sub-bodies 120 and 130 is opened to the outside of the connecting pipe 10, thereby binding elastic force and tightening strength. Taking into account, 220 to 260 degrees are formed,
In a state in which the main body 110 forms the range of the angle, the driving force to open the opening 111 to both sides is the main body 110 and the sub-body 120 and 130 . It is possible by forming a synthetic resin material and using the elasticity of the synthetic resin material,
When the connecting pipe (10) is to be assembled, the opening (111) of the main body (110) is widened to both sides to form the passage, a pipe connection clamp.
The method according to claim 1,
The hook projections 123 and 133 are formed in the shape of a square column, and the pair of sub-body 120 and 130 are tightened by maintaining the distance D in the assembled state to the main body 110 . Clamp for pipe connection, characterized in that it is configured to be taken.
The method according to claim 1,
The angle from the main body 110 to the boundary positions 115a and 115b where the main body 110 is connected to the sub-body 120 and 130 is set to 240 degrees.

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