KR930006056Y1 - Plastic connector - Google Patents

Abstract

None.

Description

End Connection of Synthetic Resin Pipe

1 is a side view of a portion of the present invention cut.

Figure 2 is a cross-sectional view of the working state of the present invention, Figure 2a is a state diagram before the coupling, Figure 2b is a combined state diagram.

Figure 3 is a half sectional view showing an embodiment of the present invention, Figures 3a, 3b, 3c shows the connection method according to the diameter of the tube, Figure 3d shows the main body of the ball to be implemented as a stationary.

* Explanation of symbols for main parts of the drawings

1: synthetic resin pipe connector 2: main body

3: pipe insertion part 4: tightening part

6: seating groove 8: flange

The present invention relates to a connector of a pipe made of synthetic resin. Specifically, the connector used to connect the synthetic resin pipe is composed of a main body, a pipe insertion part, and a fastening part to form a short overall length, but also to seal and bond. It is about improving.

In general, synthetic resin pipes are widely used in various devices and general pipes due to low manufacturing cost, ease of manufacture, and ease of handling, and various methods of connecting pipes have been developed according to the material and shape of the pipes.

By the way, the connection method of the pipe currently being used is screw type, heat welding type, compression joint type, rubber contact type, etc., but it is not compatible according to the material of the pipe, and it can satisfy all the sealing, durability, workability and economic efficiency. There was no way.

In other words, U.S. Patent No. 1,520,150 describes that the pipe is prevented from being separated by creep rings, the sealing is maintained by rubber rings, and the material is economically described as plastic, but it is prevented by the creep ring that the pipe is deformed to the outside. Although it can be deformed into the interior can not prevent the phenomenon, and can not prevent the degradation of the sealing due to the curing of the rubber ring, the material was plastic, there was a problem in impact resistance and durability.

In addition, Korean Patent Application No. 88-16197 (December 3, 1988) shows that the upper part is directed toward the end of the tube, and the main part of the connector is inserted into the outside of the end of the tube, and then the inside of the tube has an end with the shoulder. After pushing the shank until adjacent, the two parts are tightly fixed by using a pair of wrenches, and a plastic coated metal tube of the type manufactured by the technique described in European Patent No. 0024220, In order to prevent anodic corrosion caused by aluminum or aluminum alloy of an aluminum tube contacting a brass connector, a technique is described in which the metal of the connector and the tube are not in contact.

By the way, the present invention adopts a tapered shank part that is a compression joint type, which is superior to other plastic pipe connection methods, and can be said to be effective in preventing firmness and corrosion of the anode, but it is manufactured by long length of the connector (forging, cutting, etc.). ), The loss of raw materials due to the increase of cutting area, the large weight, and the high production cost, which made it impossible to install in places where the installation is limited.

In addition, when using the invention to produce a union, redusa, elbow, tee, etc. according to the use, there is a problem that the size is too large and the weight is increased as well as having a connector having a different size according to the diameter of the tube.

Polyethylene pipe connector specified in Korean Industrial Standard B1564 is widely used as a plastic pipe connector because of its short length and low price, but the width of the O-ring that provides sealing and rigidity is small, and the connection part where the pipe is joined is short. The tube could not be tolerated due to the stretching action.

Therefore, the present invention has been made in order to eliminate the above-mentioned problems in the related art, and an object thereof is to provide a good sealing property and tightness while shortening the length of the connector.

Another object of the present invention is to provide a connector that is easy to process and can be used universally according to the purpose of the connector and the diameter of the tube. Features of the present invention for achieving the above object has a maximum outer diameter larger than the outer diameter of the tube from the minimum outer diameter of approximately the same as the inner diameter of the tube, tapered and inserted into the tube and the flange is formed on the top, A fastening groove which is fixed to the device and the piping agent and on which the flange of the pipe insertion part is seated is inserted between the main body part and the main body part and the pipe insertion part, and is screwed to the main body to provide a sealability and tightness. As described below, the configuration of the present invention will be described in detail with reference to the accompanying drawings.

1 is a side view of a part of the present invention by cutting away, 1 is a synthetic resin pipe connector, 2 is a main body, 3 is a tube inserting part, 4 is a tightening part.

As shown, the synthetic resin pipe connector 1 of the present invention has a maximum outer diameter that is larger than the outer diameter of the tube 15 from a minimum outer diameter that is about the same as the inner diameter of the tube 15, and is tapered to be inserted into the tube. A tube inserting portion 3 having a flange formed therein, a main body portion 2 having a seating groove therein fixed to the apparatus and piping material and on which a flange of the tube inserting portion is seated, and the main body portion 2 and the tube inserting portion (3) inserted into the main body (2) is screwed to the main body (2) to provide a tightness and tightness 4, etc., consisting of three large parts, the first of the main body (2) ) Consists of a seating groove (6) into which the inner fastening screw (7) and the connecting flange (8) of the pipe inserting portion (3) are inserted and seated so as to be inserted and connected to the upper part of the main body (2). 5) to form and attach to other joints or fixed devices As the body portion (2) the upper portion of the subject innovation will be capable of performing the transformation by purpose such as power reception socket female, Union, tea, elbows, producers.

Secondly, it has a tapered shape so that it can be pushed into the open end of the pipe 15 by the pipe insertion part 3. The size of the tube insert 3 is such that the tube 15 attached to the tube insert 3 is tightly fixed beyond the tube insert 3 and the cut portion of the tube 15 is pushed in and fixed as necessary. It is intended to be spread outward. It is preferable that the entire taper of the pipe insertion part 3 be 2.5 degrees with respect to the longitudinal axis of the connection pipe 1.

In addition, the tube inserting portion (3) is composed of three or more truncated cones (9), each of which has a taper of 10 degrees or more with respect to the longitudinal axis of the fitting, the upper portion of these truncated cones (9) is the pipe 15 After being pushed into the insertion part, the inside of the tube is provided with a connector (1) to provide a tighter sealing and increase the connection effect.

And the upper part of the truncated cone 9 is seated in the seating groove 6 of the main body 2, the tube insert 3 is separated from the main body 2, characterized in that the flange 8 and sealing The packing 10 is formed for improvement.

Thirdly, the external fastening screw 13 inserted into the main body 2 with the fastening part 4, the tapered barrel 14 inside the body for tightening the tube inserting part 3 and the pipe 15, and the main body. Consists of a hexagonal wrench connector 12 to use a tool that can be turned when connecting the part (2) and the tightening part (4).

The inner tapered barrel 14 is about the same as the outer taper on the tube insert 3 of the connector 1, for example 2.5 ° and the narrowest part corresponding to the outer diameter of the tube 15, ie its It has an internal diameter at the bottom. Reference numeral 11 is an anode ion corrosion protection groove.

Referring to the effect of the present invention configured as described above are as follows. As shown in FIG. 2, in order to attach the connector 1 to the tube 15, first, the tightening portion 4 of the connector 1 is first directed with the wrench connector 12 facing away from the cut portion of the tube 15. After being pushed into the cut section 16 of the tube 15, the cut section 16 of the tube 15 is positioned between the third and fourth truncated cones 9 of the tube insert 3. ), Push the pipe insert (3) inserted into the tube so that the connecting flange (8) fits into the seating groove (6), and then raise the tightening part (4) of the connector (1) up to the main body ( 2) and put them together using a pair of wrenches to fix them completely tight.

At this time, the cut portion 16 of the tube is expanded to the taper of about 2.5 degrees so that the end of the cut portion is positioned between the 3 and 4 of the truncated cone when the tube insert 3 is pushed into the tube.

Through the present invention, the tapered shank portion of the iron portion of the Republic of Korea Patent Application No. 88-16197 is treated as a separate pipe inserting portion (3) and the role of the uneven portion is changed to the body portion (2) and tightening portion (4) Thus, both the tightening part and the tube inserting part are processed in the main body, thereby reducing the length by 30%. Therefore, it is possible to make easy and economical connector by solving the problems of loss of raw materials, limitation of manufacturing method, increase of cutting part and weight in manufacturing, which are included in Korean Patent Application No. 88-16197.

In this process, there is no deterioration of sealing and robustness due to separation of the tube insert (shank), and it is partially compatible according to the use and diameter of the pipe due to the separation of the tube insert. It can reduce the cost of mold production and have the advantage of mass production.

3 shows that tubes of close aperture can be used in common.

Hereinafter, the performance and effects of the connector presented in the present invention through Examples and Comparative Examples will be described in detail. However, the following examples do not limit the scope of the present invention.

Example 1

According to the present invention, the brass bar is made of five connectors (figure 1) to connect a tube having an outer diameter of 16 mm, and five tinees (figure 3d), which are embodiments of the present invention, are then lathed. The weight and length of the was measured. The results of the run are reported in Table 1.

Example 2

Randomly extract four connectors of Example 1, assemble them at both ends of a 30cm length tube, and close one end with a cap to make two test pieces, and connect a hydraulic tester to the other end of each test piece to obtain water at room temperature (20 ± 3 ° C). Test load was applied for 10 minutes at 70kg / ㎠ to check whether there was any rupture or leakage in the connector and tube.

The tube used a metal tube coated with a plastic of the type described in European Patent No. 0024220 (Kitechnology B.V. (UU.K.) trade name KiTEC 1216). The results of the run are reported in Table 2.

Example 3

The three connectors of Example 1 were randomly extracted and assembled at one end of a 15 cm length tube to make three test pieces, and the tube opposite the socket of the part where the socket was assembled in the creep of the universal testing machine (MODEL 4200, INSTRON, USA) The tensile load coming out of this socket was measured. The results of the run are reported in Table 3.

Comparative Example 1

From the tube connector (KoTai Co., Taiwan) proposed in Korean Patent Application No. 88-16197, five connectors and five teees having the same diameter as Example 1 were randomly extracted and their respective weights and lengths were measured. The results of the run are reported in Table 1.

Comparative Example 2

Four connectors of Comparative Example 1 were randomly extracted and measured in the same manner as in Example 2. The results of the run are reported in Table 2.

Comparative Example 3

Commercially available 10 connecting connectors for polyethylene pipes of the same diameter as in Example 1, four were randomly extracted and measured in the same manner as in Example 2. The crosslinked polyethylene inter-linking connector used connector M (θ12) of Asia Union Co., Ltd., Korea. The results of the run are reported in Table 2.

Comparative Example 4

Three connectors of Comparative Example 1 were randomly extracted and measured in the same manner as in Example 3. The results are reported in Table 3.

Comparative Example 5

Three connectors of Comparative Example 3 were randomly extracted and measured in the same manner as in Example 3. The results of the run are reported in Table 3.

TABLE 1

Note) * is the length of the long direction

TABLE 2

TABLE 3

Claims (4)

A pipe insert (3) having a maximum outer diameter larger than the outer diameter of the tube (15) from a minimum outer diameter approximately equal to the inner diameter of the tube (15) and tapered to be inserted into the tube, and having a flange at the top thereof, the apparatus and the pipe And a seating groove fixed therein with a seating groove in which the flange of the pipe insertion part is seated, and inserted between the body part 2 and the pipe insertion part 3, and screwed into the body part 2. Synthetic resin pipe connector, characterized in that consisting of three parts, including a tightening portion (4) coupled to impart a sealability and firmness. The tube insert (3) is provided with a flange (8) in the tube insert (3) so that the tube insert (3) can be separated from the main body (2) or prevent the tube from being pulled out. The mounting groove 6 is formed in the main body 2, and when the main body 1 and the fastening part 4 are combined, the external fastening screw end of the fastening part 4 acts to tighten the flange 8, Synthetic resin pipe connector, characterized in that it comprises a packing (8) on top of the flange (8) to increase. 2. A tapered barrel (14) is also provided in the clamping portion (4) to increase the connection and sealing of the tube between the inside of the clamping portion (4) and the outside of the tapered tube insert (3). Synthetic resin pipe connector, characterized in that. The connector of the synthetic resin pipe according to claim 1, characterized in that the change of the tightening part (14) and the tube inserting part (3) minimizes the type of the main body part (2) by mutually compatible with each other according to the use and the tube diameter. .