KR20060078091A - Pipe connector and connection method using the connector - Google Patents

Abstract

The present invention includes a support 10 made of a synthetic resin that is softened or shrunk by heat; A junction 20 attached to an inner side of the support 10; It relates to a connector for a pipe body consisting of; an elastic band bonded to the inner surface of the joining portion 20 while maintaining a state that is forcibly extended than the original state.

The pipe connector has an inner diameter that is larger than the outside diameter of the pipe and can be easily inserted in a loose state without forcibly extending the plug into the pipe. By tightly tightening the contracted elastic band and the support, it is possible to reduce the detachment phenomenon due to uneven settlement and to prevent the leakage phenomenon to improve the airtightness.

Tube, Connector, Support, Adhesive Part, Elastic Band

Description

Pipe joints and connection methods using the joints {The pipe banding device and fasting method of pipe joint}

1 is a perspective view showing a connector according to an embodiment of the present invention

2 is a cross-sectional view of the connector shown in FIG.

3 is a cross-sectional view showing a connector according to another embodiment of the present invention.

Figure 4 is a cross-sectional view showing a connector according to another embodiment of the present invention

5 is a view for explaining a manufacturing method of the connector of the present invention

Figure 6 is a view for explaining another manufacturing method of the connector of the present invention

7 is a view for explaining a connection method of the tube using the connector of the present invention.

8 is a view for explaining how to use the rubber hose of the present invention.

<Detailed description of the major symbols in the drawings>

1 connector

  10: support 20: junction

  30: elastic band 30A: rubber hose

  31: protrusion

2,2 ': tube

3: Shrinkage prevention ring

4: faucet

The present invention relates to a pipe connector and a connection method using the connector, and more specifically, to connect the pipes such as drain pipes, water and sewage pipes, communication plastic pipes, cement pipes, etc. used to prevent the departure of the connection portion It relates to a connector and a connection method using the connector.

In general, when connecting pipes such as drainage pipes, water and sewage pipes, agricultural water pipes, communication plastic pipes, cement pipes, etc. to be connected to each other, various types of connectors are used to maintain the watertightness and prevent the connection parts from being separated. It is used.

As a connector as described above, a method of connecting a tube made of elastic rubber having good elasticity to the tube and the interconnection portion of the tube has been conventionally used, but for this purpose, a rubber tube smaller than the diameter of the tube to be connected is forcibly increased. The workability is not good because it needs to be inserted into the tube, and even if you want to expand the rubber tube using a predetermined tool and insert it into the tube, the expansion tool is inserted into the inner diameter side of the rubber tube. Due to the connection of the professional tube was not easy to use.

In order to solve the above problems, recently, a socket-type connector made of plastic having a property of shrinking by heat is used, wherein the inner diameter of the socket is larger than the outer diameter of the pipe to be connected. A method of connecting the tube by making it easily inserted into the connecting portion of the tube and then shrinking the heat shrink socket by a gas torch or a heating wire has been attempted.

Similarly, the Korean Utility Model Application No. 2000-13260 is inserted into the outer side of the synthetic resin tube with a shrinkage interval, the adhesive is applied to the inside, and shrinks by heating from the outside to fusion the synthetic resin tube inside the heat shrink tube The structure of the heat shrinkable tube for fusion welding synthetic resin tube was introduced by inserting the circular reinforcement line into the shape and the transverse reinforcement line in the transverse direction.

In addition, Utility Model Registration No. 0245147 uses a sheet that shrinks when heated to form a heat shrink tube connecting the synthetic resin tube, and then install a protective member formed of asbestos and a resin plate on the outside of the welded portion to install the heat shrink tube. Heat shrink tubes for fusion of synthetic resin tubes have been introduced to prevent the welded parts from melting more than necessary.

The above-described techniques are to insert a connector made of heat-shrinkable plastic into the connection part of the tube, and then apply heat from the outside so that it is bonded by heat shrink, and the connector can be easily inserted without forcibly extending the tube into the tube. The advantage was that the work could proceed easily.

However, the connection part of the tubular body is adhered by fusion of the resin, so that the fusion part may be peeled off due to external heat, and due to the lack of shrinkage force, frequent leakage occurs due to the delamination of the connection part. There was a problem that this was not maintained.

Therefore, the present invention is configured to solve the problems as described above, easy to insert into the connecting portion of the tube, while the workability is good, and the connection using the connector and the connector for securing a high shrinkage force and airtightness after fastening It is an object to provide a method.

The present invention to achieve the above object,

In the connector used to prevent the connection between the tube and the tube,

A support made of a synthetic resin softened or shrunk by heat;

A joint attached to an inner side of the support;

It is achieved by providing a connector for a tubular body, characterized in that it comprises; an elastic band bonded to the inner surface of the joint portion while maintaining a state that is forcibly expanded than the original state within the elastic range.

Hereinafter, with reference to the accompanying drawings will be described in detail the connector according to the present invention and a connection method using the connector.

1 is a perspective view showing a connector according to an embodiment of the present invention, Figure 2 is a cross-sectional view of the connector shown in FIG.

As shown in FIG. 1 and FIG. 2, the connector 1 of the present invention includes a support 10 made of a synthetic resin, a junction 20 attached to an inner surface of the support 10, and the junction. It consists of an elastic band 30 joined together by force (30).

First, the support 10 is manufactured by selecting from a polyethylene, polypropylene, polystyrene, ABS resin, PET, polyacetal, polyvinyl chloride, acrylic-based thermoplastic synthetic resin having a property of softening by heat and molding it, more preferably It is more preferable to use the crosslinked treatment of the thermoplastic resins listed as described above because the shrinkage property by heat is good and the shape change is small.

The support 10 has a much larger inner diameter than the diameter of the tube to be connected in consideration of the thickness of the elastic band 30 attached to the inner surface, the length of the support body sufficient for the connection portion of the tube to be applied It is made to have.

Bonding portion 20 is a means for attaching the support 10 and the elastic band 30, a variety of methods such as laminating or bonding using an adhesive material, or sewn using a sewing machine or taka may be applied, but preferably Urethane-based hot-melt adhesive sheets are used, which do not separate or change their shape when contracted even when heat is applied, and melted adhesives do not flow down. The adhesive sheets may be formed on the inner surface of the support 10. It is applied to the outer surface of the elastic band 30, or both the support surface 10 and the adhesive surface of the elastic band 30.

The elastic band 30 is made of a material having a predetermined elastic force, such as natural rubber or synthetic rubber, the elastic band 30 has a larger inner diameter than the outer diameter of the tube to be connected within the elastic range. It is attached by the junction part 20 to the inner side surface of the support body 10, maintaining the state extended forcibly.

Therefore, when heat is applied to the support body 10 in the process of connecting the tubular body, it has a property of being contracted by a restoring force to return to its original state. Such an elastic band 30 has a diameter of 5 to 30% compared to the diameter of the original state. It is desirable to have an expanded state within the range.

In addition, the elastic band 30 of the present invention can be changed in various forms, which will be described with reference to FIGS. 3 and 4.

3 and 4 is a perspective view showing a connector according to a different embodiment of the present invention, in Figure 3 is an elastic band 30 attached to the inner surface of the support 10 by the joint 20 in the inside A plurality of protrusions 31 are formed at predetermined intervals, and in FIG. 4, a plurality of ring-shaped elastic bands 30 are attached to the length of the support 10 instead of one elastic band 30. It is shown.

As described above, the shape of the elastic band 30 may be variously changed to be selectively used according to the characteristics of the pipe to be connected, and it is particularly preferable to select the leakage band in consideration of securing stability or resistance to pressure.

The present invention proposes a variety of methods for producing the connector described above, it will be described as follows.

5 is a view for explaining the manufacturing method of the connector of the present invention, first, by using a predetermined expansion mechanism in the elastic band 30 having a predetermined elastic force as shown in (a) to force the inner diameter within the elastic range The elastic band 30, which is forcibly expanded as shown in (b), is attached to the inner surface of the support 10 having the same inner diameter as the outer diameter by means of a predetermined joining portion 30, so that The connector 1 of the invention is completed.

6 is a view for explaining another manufacturing method of the connector of the present invention, first, the elastic band 30 having a predetermined elastic force as shown in (a) to the joint portion 20 on the inner surface of the support 10 By applying heat to the support 10 and the elastic band 30 attached to each other as described above, by using a predetermined expansion mechanism to forcibly expand within the elastic range of the elastic band 30 and then cool ( The connector 1 of the present invention as in b) is completed.

The connector 1 manufactured through the manufacturing method as described above has a configuration in which all of the elastic bands 30, which are forcibly extended to the inner side of the support 10, are attached by the joints 20, and such a connector ( When heat is applied from outside 1), the elastic band 30 is contracted by the restoring force to return to its original state, and the support 10 is softened by heat due to the characteristics of the synthetic resin, thereby losing or maintaining the shape. Accordingly, it exhibits a strong shrinkage force with the elastic band 30 bonded to the inner side thereof.

In addition, the present invention has been described only the one-way connector used to connect two pipes having the same diameter, but can be changed in various ways, such as T-shaped, Y-shaped, + -shaped to connect two or more pipes together. In addition, it is found that it is easily applicable to tubes having different diameters.

Hereinafter, a method of connecting the connection portion of the tube and the tube using the connector (1) manufactured as described above, with reference to the drawings for explaining the connection method of the tube using the connector of the present invention of FIG. It will be described as.

First, as shown in (a), the elastic band 30 forcibly extended to the inner surface of the support 10 made of synthetic resin is attached by a predetermined joint 20, and the inner diameter of the tubular body to which the inner diameter is to be connected. The connector 1 formed larger than this is inserted into the connection portion between the tube body 2 and the tube body 2 ', and is heated from the outside through a heating means such as a torch or an electric heater to support the support 10 as shown in (b). The connection process is completed by cooling after confirming that the elastic band 30 bonded to the) is completely in contact with the outer surface of the tubular body 2.2 '.

At this time, the heating temperature when the connector 1 is heated depends on the material of the synthetic resin forming the support 10, but is preferably performed in the range of 150 ~ 300 ℃. This is because the support 10 melts and flows down when it is heated to a too high temperature, and if the heating process is too low, the connection process is prolonged for a long time, thereby reducing work efficiency.

In addition, hot melt that can be melted by heat on the inner surface of the elastic band 30 in direct contact with the tubular bodies 2 and 2 'in order to improve the adhesion between the tubular bodies 2 and 2' and the connector 1. -melt) adhesive can be applied and then connected. Although the adhesive may be applied during the connection process in the field, it is applied to the inner surface of the elastic band 30 in advance and stored with a release protective tape on the upper surface of the adhesive tape to remove the protective tape in the field for convenience of operation Bring.

In addition, when the tubular body 2,2 'to be connected is a rubber hose or a soft synthetic resin, the tubular body 2,2' is also contracted by the contracting force of the support 10 and the elastic band 30 in the connecting process. Since the binding force and watertightness may be reduced due to the shape change, the metal shrinkage ring 3 is inserted into the pipe 2 and 2 'to which the connector 1 is in close contact. Note that it is possible to prevent the contraction).

In this connection process, the inner diameter of the connector is larger than the outer diameter of the tube, so that the connector can be easily inserted in a loose state without forcibly extending the connector into the tube. By tightly tightening the elastic band and the support contracted to the site, it is possible to reduce the phenomena caused by the uneven settlement and to prevent the leakage phenomenon to improve the airtightness.

In addition, after being connected, the elastic band has elasticity and resilience in nature, so it can flexibly respond to thermal expansion or thermal contraction due to sudden temperature changes such as winter and summer, and when applied to underground buried pipes, vehicle movement or earthquake on the ground surface It shows high resistance to impact, etc., and the support body contracted together with the elastic band can be adequately complemented with mechanical strength to protect the tube from bending, torsion and impact caused by external force, and the elastic band is not exposed to the outside. It also serves as a protective device to prevent corrosion.

The present invention is not only applied to the connector for connecting the pipe, it can be applied as a connecting means in various other fields, as an example will be described with a rubber hose.

8 is a view for explaining the use of the rubber hose of the present invention, as shown in FIG. 8, the present invention is more than the outer diameter of the faucet or water pipe to which one end of the rubber hose (30A) is to be connected; It is forcibly extended to have a large inner diameter, and the support 10 made of thermoplastic resin is joined to one end of the force-expanded rubber hose 30A by a predetermined joint 20. It provides a rubber hose provided with means.

Looking at the connection process of such a rubber hose (20A), as shown in (a) the one end is forcibly expanded and the rubber hose (30A) that the support 10 is attached to the outer side by the faucet (20A) 4) the rubber hose 30A bonded to the support 10 as shown in (b) by heating at the outside through a heating means such as a torch or an electric heater, and is connected to the outer surface of the faucet 4 After confirming that they are in close contact, the connection process is completed by cooling.

The rubber hose as described above can also bring the same effect as the connector described above. In other words, it is possible to easily insert the conventional faucet or water pipe without the hassle of inserting it forcibly, and the fastening part is tightly tightened by the contraction force of the rubber hose and the support to the faucet or the water pipe so that the rubber hose is separated by high water pressure. Can be prevented.

The present invention as described above is not limited to the embodiments shown in the drawings, and thus, various changes may be made without departing from the basic concept of the claims and the dependent claims of the present invention.

As described above, the tubular connector of the present invention and the connection method using the connector can be easily inserted in a loose state without forcibly extending the connector into the tubular body because the inner diameter of the connector is larger than the outer diameter of the tube. Not only its workability is good, but the elastic band and the support body tightened tightly to the connection part of the tube can reduce the detachment phenomenon due to the uneven settlement and can prevent the leakage phenomenon to improve the airtightness.

In addition, the present invention has elasticity and resilience in the nature of the elastic band can be flexibly respond to thermal expansion or thermal contraction due to sudden temperature changes, such as winter and summer, and when applied to underground buried pipes, vehicle movement or earthquake on the ground surface It shows high resistance to impact, etc., and the support body contracted together with the elastic band can be adequately complemented with mechanical strength to protect the tube from bending, torsion and impact caused by external force, and the elastic band is not exposed to the outside. To prevent corrosion.

Claims (8)

In the connector used to prevent the connection between the tube and the tube, A support made of a synthetic resin softened or shrunk by heat; A joint attached to an inner side of the support; And an elastic band bonded to the inner side of the joint while maintaining a state in which it is forcibly expanded than the original state. The connector of claim 1, wherein the support is selected from polyethylene, polypropylene, polystyrene, ABS resin, PET, polyacetal, polyvinyl chloride, and acrylic synthetic thermoplastic resin. The connector for a pipe according to claim 2, wherein the thermoplastic resin is crosslinked. The method according to claim 1 or 2, wherein the bonding portion is made in laminating or bonding using an adhesive material, or stitched using sewing machine or taka, and more preferably made of a hot-melt adhesive sheet of urethane series. Pipe fittings, characterized in that. The inner diameter of the elastic band is forcibly expanded within its elastic range, and the forcibly expanded elastic band is attached to the inner surface of the support having the same inner diameter as the outer diameter by a predetermined joint. Method of manufacturing a body connector. The elastic band is attached to the inner side of the support by a predetermined joint, and while the heat is applied to the bonded support and the elastic band as described above, the inner diameter is forcibly expanded within the elastic range of the elastic band, and then cooled. Method for producing a connector for pipes. Insert a connector in which the elastic band, which is forcibly expanded on the inner surface of the support made of synthetic resin, is attached to the connection portion between the tube and the tube by heating it through a heating means such as a torch or an electric heater from the outside. Connecting method using a connector for a tubular body characterized in that the cooling after confirming that the elastic band bonded to the support is in close contact with the outer surface of the tubular body. In the rubber hose connected to the faucet or the water pipe, One end of the rubber hose is forcibly extended to have a larger inner diameter than the faucet or the outer diameter of the water pipe to be connected, and one end of the forced rubber hose is a support made of a thermoplastic resin on the outside Rubber hose provided with a connecting means, characterized in that joined by a predetermined coupling means.

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