KR200461998Y1

KR200461998Y1 - Connection packing for synthetic resin pipe

Info

Publication number: KR200461998Y1
Application number: KR2020110010156U
Authority: KR
Inventors: 신진욱
Original assignee: 신진욱
Priority date: 2011-11-16
Filing date: 2011-11-16
Publication date: 2012-08-22

Abstract

The present invention relates to a packing for pipe joint pipes for connection of synthetic resin pipes used as water pipes, sewer pipes, agricultural or industrial pipes, wherein the first sealing part is formed of hard rubber, and the second sealing part is made of soft rubber. Provided is a packing for connecting a synthetic resin pipe, characterized in that the adhesive rubber.
The first sealing part of the packing is formed at the lower end, the second sealing part is formed in the end tapered in the synthetic resin tube insertion direction at the upper end of the packing, the first sealing part (HS / Shore Hardness) 70 to 95 It consists of the hard rubber of the, and a 2nd sealing part is formed in the double structure which consists of soft adhesive rubber of Shore hardness 30-69.
The first sealing part and the second sealing part are molded by double injection, and the joint part of the first sealing part and the second sealing part is formed in a concave-convex shape to improve adhesion.

Description

CONNECTION PACKING FOR SYNTHETIC RESIN PIPE

The present invention relates to a packing for connecting a synthetic resin pipe used as a water supply pipe, a sewer pipe, an agricultural or industrial pipe, and more specifically, by forming a double structure by double injection molding the packing with a hard rubber and a soft adhesive rubber. In connection with the synthetic resin tube, the one-touch type can be easily and quickly and firmly coupled and fixed, there is no risk of leakage, and relates to a synthetic resin tube connecting packing that can prevent the separation of the synthetic resin tube.

When connecting synthetic resin pipes for water supply, sewerage, industrial use, and agriculture, jointing devices are used to facilitate the coupling between the resin pipes.

Various configurations are known as the joint apparatus, and a joint is generally used when the joint of the resin tube is combined, and a packing is inserted to maintain the airtightness between the joint tube and the synthetic tube.

Such packing is disclosed in Korean Utility Model Registration No. 20-0377322 (Registration Date: Feb. 21, 2005).

In the registration utility model is described a configuration for maximizing the effect of airtightness by forming two or more soft thin film frame in the inner diameter of the packing.

However, the packing is complicated in composition and the thin film frame formed on the packing may be damaged when the resin pipe is connected, and there is a problem in that the resin pipe is not prevented from being separated. Cases may occur.

In addition, Japanese Laid-Open Patent Publication No. 15-021280 (published Jan. 24, 2003) describes a seam packing formed of a hard part for preventing leakage and a soft part for preventing leakage.

In the Japanese Laid-Open Patent Publication, it is shown to have some effects on the prevention of leakage by the soft part, but still has a problem in preventing the separation of the connecting synthetic resin tube.

In addition, a technology related to a joint device of a synthetic resin pipe to which a stopper and a packing are applied to prevent separation of the connection pipe is disclosed in Korean Patent Registration No. 10-0679287 (Registration Date: Jan. 30, 2007).

The joint device 400 disclosed in the registered patent is formed at one end of the synthetic resin tube 410, as shown in FIG. 1, and an internal thread head 412 having an internal thread portion 413 and a locking jaw 415 formed therein; The stopper 416 and the stopper guide 419 and the rubber ring 421 which are inserted into the female screw head 412 and are caught by the locking jaw 415, and the male screw part which is then coupled to the female screw head 412 ( 432 includes a male screw 430 formed.

The joint device 400 having the above-described configuration inserts the stopper 416, the stopper guide 419, and the rubber ring 421 into the inside of the female screw head 412 when the synthetic resin pipe is connected, and then assembles the male screw 430. Pushing the synthetic resin tube 411 to be connected in a state has the advantage that the connection is made so that the synthetic resin tube can be easily connected.

However, if you want to connect the synthetic resin pipe using the joint device 400 of the above configuration in the field, the stopper 416, the stopper guide 419 and the rubber ring 421 inside the female screw head 412 in the correct order After inserting according to the male screw 430 to be assembled by combining, the configuration is complicated and takes a lot of time and processes to connect the resin pipe, there is inconvenience in use, especially each component is separately configured to keep There is a problem that is not easy.

The present inventors have applied for a patent application No. 2011-0044628 (2011. 5. 12.) and Utility Model Registration No. 2011-0004049 (2011. 5. 12.) to solve the problems of the prior art. The application solved the problem of preventing the separation by simplifying the configuration and strengthening the bonding force of the synthetic resin tube by configuring the separation prevention stopper integrally in the packing, the present invention further goes without the composition of the separate separation prevention stopper of the application This is further improved to prevent separation of the pipe.

The present invention is to solve the above-mentioned problems, the configuration is simple and easy to assemble, and in particular, to provide a synthetic resin pipe connection packing that can be fixed and fast, simple and fast when connecting the synthetic resin pipes. There is this.

In addition, the present invention can maximize the bonding force by the adhesive force of the soft adhesive rubber when connecting the synthetic resin tube, not only to prevent leakage, but also to prevent the separation of the synthetic resin tube without a separate separation prevention device that can effectively prevent separation It is an additional object to provide a packing for the product.

In order to achieve the above object, the present invention is formed in at least one end of the connection pipe is formed therein, the insertion hole is inserted into the synthetic resin tube to be connected and the packing is fixed to the fixing groove formed along the inner periphery of the insertion hole The first sealing part is formed of hard rubber, and the second sealing part is softer than the first sealing part, and provides a packing for connecting a synthetic resin pipe, characterized in that the double configuration of rubber having adhesive properties.

The first sealing part of the packing is formed at the lower end, and the second sealing part is formed at the upper end of the packing so that its end is tapered in the synthetic resin tube insertion direction.

The first sealing part of the packing is formed of a hard rubber of HS / Shore Hardness 70 to 95, and the second sealing part is formed of a double structure composed of soft adhesive rubber of Shore hardness of 30 to 69.

Preferably, the first sealing portion has a Shore hardness of 70 to 85 and the second sealing portion has a Shore hardness of 40 to 65.

The first sealing part and the second sealing part may be formed by double injection, and the interface between the first sealing part and the second sealing part may be formed in an uneven shape to improve adhesion.

The packing is made of a rubber material or a soft synthetic resin, preferably made of silicone rubber having excellent physical and hygienic aspects and adhesion.

The present invention has the above-described configuration, the first sealing part has a sealing effect while fixing the connecting pipe with hard physical properties, and the second sealing part has a soft adhesiveness, which has the effect of improving the sealing force and preventing separation by adhesiveness. Its structure is simple and it is easy to use.

As described above, the packing for connecting the synthetic resin tube according to the present invention forms a double structure of the first sealing portion of the hard and the second sealing portion of the soft adhesive, so that the assembly is simple and economical, and the synthetic resin tube in the field One-touch type to complete the assembly by inserting the synthetic resin tube to be connected at the time of connection, not only easy and fast and firmly combined and fixed, but also less risk of water leakage, and the synthetic resin does not need a separate separation prevention structure due to the adhesive force of the second sealing part. There is a useful effect that can prevent the separation of the tube.

1 is an exploded perspective view of a conventional joint device for connecting a synthetic resin pipe.
Figure 2a is a perspective view of the present invention packing, Figure 2b is a cross-sectional view of the present invention packing, Figure 2c is an enlarged view of the junction of the present invention packing.
Figure 3 is a cross-sectional view of an embodiment using the synthetic resin pipe connection packing of the present invention in a connecting pipe having an expansion portion.
4 is a cross-sectional view of an embodiment in which the synthetic resin pipe is connected to FIG. 3.

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

Figure 2a is a perspective view of the present invention packing, Figure 2b is a cross-sectional view of the present invention packing, Figure 2c is an enlarged view of the joint surface of the present invention packing, Figure 3 is a synthetic resin pipe connection packing of the present invention connection with expansion pipe A diagram showing the state of use in the pipe.

2A to 2C, the packing 100 for synthetic resin pipe connection according to the present invention includes a first sealing part 101 and a second sealing part 102, and has a step 103 and a protrusion 104. Is formed.

The first sealing portion 101 is made of rubber harder than the second sealing portion 102, and the hardness thereof is made of hard rubber of Shore hardness 70 to 95, and the second sealing portion 102 is Shore hardness 30 To 69 soft adhesive rubbers.

The rubber components of the first sealing portion 101 and the second sealing portion 102 are silicone rubber, butadiene rubber (BR, SBR, NBR, etc.), isoprene rubber (IR), chloroprene rubber (CR), ethylene propylene diene Synthetic rubber such as rubber (EDPM) is used, and the rubber components of the first sealing part 101 and the second sealing part 102 may use different components, but it is preferable to use the same synthetic rubber to improve adhesion. In particular, silicone rubber is preferable in terms of adhesion, durability and hygiene.

The hardness of the first and second sealing portions 101 and 102 is controlled by the amount of rubber plasticizers or softeners (plant type softeners such as castor oil, pine tar, tall oil and mineral oil softeners such as process oil) that are commonly used. In order to provide the tackiness of the second sealing part, a tackifier (gumaron-indene resin, phenol-formaldehyde resin, xylene-formaldehyde resin, polyterpin resin, petroleum hydrocarbon resin, Rosin ester, etc.) is used by further mixing 3 to 10% by weight.

If the tackifier is less than 3% by weight, the tackifier is inferior. If the tackifier is more than 10% by weight, the tackifier may leak.

The joints 105 of the first and second sealing parts 101 and 102 may have a V-shape, a U-shape, a square shape, or the like, in order to prevent fracture due to a weakening of the joining force due to a difference in properties between the hard rubber and the soft rubber. It is formed to have a concave-convex shape, so that the cross-sectional area of the joint surface is enlarged to have an effect of improving the bonding force.

The packing having the configuration of the first and second sealing parts 101 and 102 of the present invention is molded by a double injection molding method.

Double injection molding is a mold designed to be double injection using an injection machine or core or slide structure that has two injection devices and a rotating mechanism installed using two different resins or resins of different colors. It is a molding method of filling a secondary resin into a space between a primary molded product and a secondary cavity (CAVYTY) molded in a mold, and the conventionally known technique used in the art, the packing of the present invention is known. It is manufactured by a method of injection molding a second first sealing part after injection molding the hard first sealing part in a mold having a packing shape of the present invention by a double injection molding machine.

The packing 100 of the present invention is a first sealing portion 101 is to be in close contact with the outer circumference of the synthetic resin tube is coupled with a hard rubber, to be fixed to the inside, the protrusion 104 is formed, the second sealing The part has a configuration in which the end thereof is tapered in the synthetic resin tube insertion direction.

When the first and second sealing parts 101 and 102 of the present invention are formed, when the synthetic resin tube 111 is inserted through the insertion hole 121, the hard first sealing part 101 may be formed of the synthetic resin tube 111. Along with the outer circumference, the adhesiveness is fixed and the soft adhesive second sealing part not only closely adheres to the synthetic resin tube but also adheres the packing and the synthetic resin tube by adhesiveness, thereby effectively preventing the separation of the synthetic resin tube and preventing leakage.

Here, the connection pipe 110 is formed as a flow path for the flow of fluid therein, the drawings have been described with an example of a straight, but may have a variety of structures, such as U-shaped, T-shaped, cross-shaped, the present invention is limited thereto no.

The synthetic resin tube 111 and the connecting tube 110 may be formed of a synthetic resin commonly used in the art, in particular may be formed of polyvinyl chloride (PVC).

The connection portion 120 is provided with an insertion hole 121, the insertion hole 121 is where the synthetic resin tube 111 to be connected is inserted.

A fixing groove 122 is formed at the inner circumference of the insertion hole 121.

The fixing groove 122 is formed to allow the packing 100 to be inserted and fixed, and may be formed in a shape corresponding to the shape of the packing 100 to be inserted.

The synthetic resin pipe connection packing 100 according to the present invention as described above is a simple one-touch type to complete the connection by inserting the synthetic resin pipe 111 to be connected when connecting the synthetic resin pipe 111 in the field, simple, fast and robust The advantage is that you can.

In particular, there is no risk of leakage due to the dual structure having the hard and soft adhesiveness of the packing 100, it is a useful design that can prevent the separation of the synthetic resin tube (111).

As shown in Figure 3 is inserted into the fixing groove 122 through the insertion hole 121 of the connecting portion 120 having the expansion pipe 124 packing 100 for the synthetic resin pipe connection according to an embodiment of the present invention Assembly is completed by fixing.

As shown in FIG. 4, when the synthetic resin tube 111 to be connected is pushed in until it is no longer inserted, the connection of the synthetic resin tube 111 is completed.

In order to prevent the insertion of the synthetic resin tube 111 to be inserted as shown in the drawing any more, the inner diameter at the end of the connecting portion 120 can be made smaller, which can be made selectively as needed.

When the connection of the synthetic resin tube 111 is completed, the hard first sealing portion of the packing 100 fixes the synthetic resin tube 111, and the second sealing portion having a soft adhesiveness is connected to the synthetic resin tube 111 and the connecting tube 100. ) By adhering at the same time with the adhesion, it has an excellent effect of improving the adhesion between the synthetic resin tube and the connecting tube to prevent leakage and separation between the tube.

According to the embodiment of the present invention described above, as the packing 100 is inserted into the fixing groove 122 is fixed, there is no need for a separate device for fixing the packing 100.

Accordingly, in the field, simply insert the synthetic resin tube 111 to be connected to the inserting hole 121 after the packing 100 is inserted, and the connection of the synthetic resin tube 111 is completed to shorten the working time. have.

Reference numeral 125 is a reinforcement pipe for reinforcing the expansion pipe.

While the present invention has been described with reference to the accompanying drawings, the accompanying drawings are presented to help understand the present invention, and can be used by changing the configuration of the packing according to the structure of the joint device of the various synthetic resin pipes, this technique Those skilled in the art will understand that various such modifications and equivalent other embodiments are possible.

100: packing, 101: first sealing part, 102: second sealing part, 103: stepped, 104: protrusions, 105: junction, 110: connector, 111: synthetic resin tube, 120: connection, 121: insertion port, 122: Fixing groove, 123: locking jaw, 124: expansion pipe, 125: reinforcement pipe

Claims

The first sealing part 101 and the second sealing part 102 are made of hard, and the junction part 105 of the first sealing part and the second sealing part has a concave-convex shape for the synthetic resin pipe connection packing 100. In
The first sealing portion 101 is made of hard silicone rubber having a Shore hardness of 70 to 85 having the protrusion 104 formed therein, and the second sealing portion 102 has a Shore hardness of 40 to which the step 103 is formed. 65. A packing for a synthetic resin pipe connection, characterized in that it is a double structure composed of soft adhesive silicone rubber containing 3 to 10 wt% of a tackifier.

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