KR200184274Y1 - A piping reducer - Google Patents

Abstract

The present invention relates to a fitting for a synthetic resin pipe, the connection end of the synthetic resin pipe (60) inserted and pressed into the pipe socket (10) can be structurally prevented from being separated from the external pressure while being precisely pressed and secured to a substantial coupling gap. In order to ensure that, a plurality of stepped surfaces (11, 12) is formed on the inner circumferential surface on which the thread (13) is formed, the pipe socket (10) having the thread (14) formed on the other outer circumferential surface, and the thread (13) of the pipe socket (10). The screw portion 21 is formed on one side outer circumferential surface so as to correspond to the cap nut 20 and the outer peripheral surface of the synthetic resin pipe 60 inserted and fastened to the cap nut 20 on which the fastening portion 22 is expanded to be fastened by a fastening means. In order to be in contact with the step surface 12 of the pipe socket 10 so as to prevent the separation from the triangular tightening end 32 in the same direction as the insertion direction of the synthetic resin tube 60 on one side of the ring body 31 of a predetermined width ) Bending a number of The separation prevention ring 30 formed between the separation prevention ring 30 and the cap nut 20 is interleaved and pressed while maintaining the inner circumferential surface of the pipe socket 10 and the outer circumferential surface of the synthetic resin pipe 60. The cap nut compression surface 51 is inclined bent at a predetermined angle so that the cap nut 20 to be pressurized is inserted into the soft sealing packing 50 and the cap nut is relatively soft as the cap nut is fastened to the pipe socket 10. Phosphorus sealed packing 50 is characterized in that it is configured to include a blocking ring (40) to maintain the airtight so as not to be pressed toward the tightening end 32 of the separation prevention ring (30).

Description

Joints for synthetic resin pipes {A piping reducer}

The present invention relates to a fitting for a synthetic resin pipe for connecting the pipe of the synthetic resin tube by airtight, more specifically, the connection end of the synthetic resin pipe is inserted into the pipe socket by a one-touch fastening rotation to precisely the coupling gap Compression-fixed, airtight and structurally prevented from being separated against external pressurization, the coupling structure of the components also relates to a simplified synthetic resin fittings.

In general, with the radical development of science and technology and economic growth, more convenient functions and conveniences are required throughout the consciousness in the living environment.In particular, in the living environment, living water or fuel in living spaces such as high-rise buildings or houses and apartments The connection relationship between the pipe and the direction to extend the length of the pipe that can safely supply gas from a remote source to the corresponding place of use has emerged as an important infrastructure problem.

In other words, in connecting and diverting the supply pipe from the outside and the branch pipe to the place, leakage and leakage of the contents passing through the pipes are ensured by keeping the joints between these pipes from the internal pressure or the external shock. There is a need for a pipe joint structure that can prevent the occurrence of oil.

As such, the connection pipes used for supplying fluids such as hot water pipes for homes or heating pipes for boilers are generally used as synthetic resin pipes made of polyethylene resin or plastic, and a simple cylindrical synthetic resin pipe connection end is connected to a pipe fitting together with an insulation protection tube. While inserting into the pipe socket, insert the insulation ring, which is an insulation means together with the sealing seal, which is a direct sealing means in the middle, and finally press the cap nut to press and fix it so that the connection end of the synthetic resin pipe is kept tight in the fitting. It was.

However, the connecting end of the synthetic resin pipe inserted into the pipe socket of the pipe fitting has no problem in the insulation structure between the pipe socket and the cap nut, which are pipe fittings, by the insulating ring and the sealing packing, but the pipe socket in which the actual assembly gap is formed. Of the cap coupling part and the synthetic end of the synthetic resin pipe are crimped and sealed by a relatively hard insulating ring made of Teflon, so that the airtightness of these coupling parts, which sustains the harsh environment under high pressure and high temperature, may be structurally problematic. As well as the pipe socket into which the synthetic resin tube is inserted, the cap nut's own structure that compresses and seals the synthetic resin tube together with the sealing means is also very complicated, resulting in a relatively high product manufacturing and production cost.

The present invention has been devised in view of the above problems, and the one end of the synthetic resin pipe inserted into the pipe socket by one-touch fastening rotation is precisely crimped and secured with a substantial coupling gap, thereby maintaining its airtight, and structurally deviating from external pressure. It is an object of the present invention to provide a fitting for a synthetic resin pipe which can be prevented and as a result, a reliable structure of the piping connection can be ensured even with a simplified structure of component coupling.

Figure 1 is a perspective view of the separated state of the fittings for synthetic resin piping of the present invention.

Figure 2 is a cross-sectional view of the separated joint for the synthetic resin pipe of the present invention.

Figure 3 is a cross-sectional view of the fitting state for the synthetic resin pipe of the present invention.

Figure 4 is an application of the fittings for the synthetic resin pipe of the present invention, the inner and outer parts of the pipe socket to which the cap nut is fastened and fastened to each other formed of a brass reinforcement portion and a synthetic resin material coupled through a plurality of grooves Status section.

Explanation of symbols on the main parts of the drawings

10: pipe socket 11, 12: step surface

13,14: thread 18: coupling groove

19: reinforcement 20: cap nut

21: screw portion 22: fastening portion

30: release prevention ring 31: ring body

32: tightening unit 40: blocking ring

50: hermetic packing 51: cap nut compression surface

60: synthetic resin pipe

Synthetic resin pipe fittings of the present invention for achieving the above object, so that a plurality of step surface is formed on the inner circumferential surface formed with a screw thread so that the screw socket is formed on the other outer circumferential surface and the corresponding screw thread of the pipe socket A screw width is formed on one side of the outer circumferential surface and the cap nut on which the fastening portion is extended to be pressed by the fastening means on the other outer surface and the outer circumferential surface of the synthetic resin pipe to be inserted are pressed into a predetermined width to closely contact the step surface of the pipe socket. A separation prevention ring formed by bending a plurality of triangular tightening ends in the same direction as the insertion direction of the synthetic resin tube on one side of the ring body of the ring body, and interposed and crimped between the separation prevention ring and the cap nut, the inner peripheral surface of the pipe socket and the outer peripheral surface of the synthetic resin tube The cap nut crimping surface at a certain angle so that the pressurized cap nut is induced while It is configured to include an inclination bent soft sealing packing, and a blocking ring for maintaining the airtight sealing cap so as not to be pressed against the tightening end of the separation prevention ring as the cap nut is pressed against the pipe socket. It features.

In addition, the pipe socket is characterized in that at least the threaded inner portion is formed of a brass reinforcement portion so that the wear of the thread is reduced, the outer portion of the synthetic resin material is integrally coupled to each other through a plurality of coupling grooves.

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

1 is a view showing the external structure of the synthetic resin pipe fittings separated state of the present invention, Figure 2 is a cross-sectional view showing the internal structure of the synthetic resin pipe fittings separated state of the present invention, Figure 3 is a synthetic resin pipe fittings according to the present invention The internal structure of the bonded state of the cross-sectional view, the connecting end of the synthetic resin pipe (60), which is the connecting branch pipe, the separation prevention ring 30 of the metal material, the hard blocking ring 40 and the soft sealing packing 50 sequentially The cap nut 20 is inserted into the inside of the pipe socket 10, and the cap nut 20 is pressurized and fastened to the pipe socket 10, so that the sealing packing 50 embedded in the pipe socket 10 is compressed and connected to the synthetic resin pipe 60. The outer circumferential surface of the end end and the inner circumferential surface of the pipe socket 10 are configured to be kept airtight.

That is, even when the connecting end of the synthetic resin pipe 60 fastened and fixed by the pipe socket 10 and the cap nut 20 receives an external force, the outer circumferential surface of the connecting end of the synthetic resin pipe 60 is strongly responded to the external force. Compression prevents the structure of the synthetic resin tube 60 from being separated, wherein the pipe socket 10 is a synthetic resin material such as polyethylene resin or plastic, and the synthetic resin tube 60 is formed on the inner circumferential surface of one side to which the synthetic resin tube 60 is inserted and compressed. The stepped surface 11 corresponding thereto is formed to allow the connection end to be interlocked, and the stepped surface 11 is formed such that the inner diameter of the synthetic resin pipe 60 and the inner diameter of the other side of the pipe socket 10 are the same. Prevent changes in flow rate.

In addition, a plurality of sealing means (30) (40) for maintaining the gap between the gap between the step surface 11 and the opening of the pipe socket (10) and the opening to prevent the backward departure after the insertion compression of the synthetic resin pipe (60) Another stepped surface 12, which is orthogonal, is bent to allow the 50 to be internally compressed, and the inner diameter of the upper stepped surface 12 is larger than the outer diameter of the lower stepped surface 11. .

In addition, the pipe socket 10 has a predetermined thread 13 formed in the direction of the upper step surface 12 from the outer opening so as to be screwed corresponding to the cap nut 20, and an external supply pipe (not shown in the drawing). Thread 14 is formed on the outer circumferential surface of the other side in order to be connected to).

On the other hand, the separation prevention ring 30 is formed of a ring body 31 having a predetermined width in the inner radial direction from the outer peripheral surface to be in close contact with the upper step surface 12 of the pipe socket 10 as a metal material, and also the ring body ( A plurality of triangular tightening ends 32 continuous in the center of the direction from the lower surface of the tube socket 10 into the insertion direction of 31) are bent in the same direction as the indentation direction of the synthetic resin tube 60.

In particular, when the tightening end 32 has an external force acting on the fastened synthetic resin tube 60, the outer peripheral surface of the synthetic resin tube 60 in response to the synthetic resin tube 60 is retracted toward the opening side of the pipe socket 10 The protruding end of the bent tightening end 32, which has been pressed on, rotates on the basis of the lower end of the ring body 31, thereby more firmly compressing and fixing the outer circumferential surface of the synthetic resin tube 60 to prevent it from falling back. Do it.

In addition, the blocking ring 40 is interposed between the separation prevention ring 30 and the sealed packing 50 relative to the sealed packing 50 that pressurizes the sealed packing so that the sealed packing is inclined toward the release preventing ring 30 so as not to be press-fitted. As a hard material, that is, a part of the sealing packing 50, which is a soft material when the pipe is fastened, is pressed by the cap nut 20 and prevented from being pressed between the tightening ends 32 of the release preventing ring 30. This ensures that the joining gap is more strongly confidential.

The sealed packing 50 is a cross-sectional shape of the initial state that is not pressurized by the soft material, the outer side is constant so that the screw portion 21 of the cap nut 20 to be pressurized can be easily inserted into the inside while being pressurized. It forms an inclined bent at an angle, which is sealed tube 50 is embedded in the tube socket 10 is pressed by the fastening pressure of the cap nut 20 to be squeezed and secured in a rectangular or square, the tube socket 10 Implement perfect airtightness between the inner circumferential surface of the inner surface and the outer circumferential surface of the synthetic resin tube (60) and at the same time to prevent the sealing packing 50 from being damaged by the external force.

On the other hand, the cap nut 20 is a hollow structure of a synthetic resin material such as non-ferrous metal or plastic, the thread 21 is formed on a predetermined portion of the outer peripheral surface of one end to be fastened corresponding to the thread 13 of the pipe socket 10 described above. In addition, the fastening portion 22 having a predetermined shape is extended to the opposite side to be fastened to the pipe socket 10 by a fastening means such as a spanner, and the like, in particular, the diameter of the fastening portion 22 is a pipe socket ( 10) It is formed larger than the outer diameter of one side portion, so that the threaded end 13 and the threaded part corresponding to the fastening end of the fastening end 22 of the cap nut 20 and the fastening end of the pipe socket 10 when the pipe is fastened. It is preferred that 21) be formed respectively.

Figure 4 is an application of the fitting for the synthetic resin pipe of the present invention is the inner portion and the outer portion of the pipe socket 10, the cap nut 20 is fastened and pressurized is formed of the reinforcement portion 19 and the synthetic resin material of the brass material, respectively The cross-sectional structure of the coupling state is integrally coupled through a plurality of grooves, and the corresponding thread 13 to which the cap nut 20 is fastened to both sides is sealed on both sides so as to seal the synthetic resin pipe 60 on both sides. The thread 14 formed on the outer peripheral surface of the other side of the pipe socket 10 is not required.

Here, the pipe socket 10 of the present embodiment includes at least the threaded portion 13 is formed so as to improve the fastening force in the screw fastening with the cap nut 20, as well as to reduce the wear of the threaded thread 13, which is a fastening portion. Reinforcement portion 19 of a metallic material, for example, brass material may be provided, and the reinforcement portion of the reinforcement portion 19 of the inner portion, which is a metallic material, and the synthetic resin material to improve the bonding force of the boundary portion where the outer portion contacts. A plurality of coupling grooves 19a may be formed on the upper surface of the 19 to be integrally coupled to each other.

Such a reinforcement 19 may be applied to the basic embodiment in FIGS. 1 to 3 described above, but has been described by way of example only and limited to the application embodiment of FIG. 4.

According to the synthetic resin pipe fitting of the present invention described above, the airtightness between the outer peripheral surface of one end of the pipe and the inner circumferential surface of the pipe socket embedded in the pipe socket is fully realized, and there is an advantage of improving workability by simplifying the fastening part. In addition, while the existing pipe socket is made of non-ferrous material, it is expensive, and by replacing part of the pipe socket with synthetic resin, it is possible to reduce the manufacturing cost.

Moreover, the joint fitting for synthetic resin pipe of the present invention can press the outer circumferential surface of the end of the pipe to which the release prevention ring is fastened in response to the applied external force even when the external force is applied to the fastened pipe, so that it is a perfect coupling part under severe environments The effect of maintaining the airtight structure of is provided.

Claims (2)

A plurality of stepped surfaces 11 and 12 are formed on the inner circumferential surface on which the threads 13 are formed, and the pipe socket 10 of the synthetic resin material having the threads 14 formed on the other outer circumferential surface, and the threads 13 of the pipe socket 10. While the screw portion 21 is formed on one side outer circumferential surface to correspond to the other, the cap nut 20 on which the fastening portion 22 is extended to be pressurized by the fastening means on the other outer surface, and the outer circumferential surface of the synthetic resin tube 60 to be fastened. In order to be in close contact with the step surface 12 of the pipe socket 10 so as to prevent the separation from the triangular tightening end 32 in the same direction as the insertion direction of the synthetic resin tube 60 on one side of the ring body 31 of a certain width ) Is a plurality of bent release prevention ring 30, interposed and compressed between the separation prevention ring 30 and the cap nut 20, the inner circumferential surface of the pipe socket 10, the outer circumferential surface of the thread 13 and the synthetic resin pipe (60) The cap nut press surface 51 has a predetermined angle so that the pressurized cap nut 20 is guided while maintaining the airtightness. Soft sealing packing 50 inclined into a bent, the cap nut is fastened by pressing the cap nut to the pipe socket 10, the relatively soft sealing packing 50 is cut gap of the tightening end 32 of the separation prevention ring (30). Fittings for synthetic resin pipes, characterized in that the coupling is configured to include a shut-off ring (40) for hermetically sealed so as not to be pushed toward. The outer portion of the synthetic resin material according to claim 1, wherein the pipe socket (10) is formed of a reinforcing portion (19) of brass material so that at least an inner portion of the thread (13) is formed to reduce wear of the thread (13). Fittings for synthetic resin pipes, characterized in that they are integrally coupled through a plurality of coupling grooves (19a).