KR102243480B1 - Joint Assembly for Pipe Connection - Google Patents

Abstract

The present invention relates to a joint assembly for pipe connection, and more specifically, to a joint assembly for pipe connection which may stably couple pipes and facilitate ease in the connecting process of the pipes. To this end, the joint assembly for pipe connection according to the present invention comprises: a connecting main body (10) provided with an insertion pipe unit (11) inserted to the inside of the end portion of the pipe, and a pressurizing support unit (12) protruding from the outside of the insertion pipe unit (11) at an interval; a pressurizing nut unit (20) having a screw thread (23) formed at the inner circumferential surface to be mutually geared with the pressurizing support unit (12) of the connecting main body (10), and provided with a stepped protrusion unit (24); and a clamping O-ring (30) which has a single structure overall to be arranged between the pressurizing support unit (12) of the connecting main body (10) and the stepped protrusion unit (24) of the pressurizing nut unit (20), and is provided with a cut spacing unit (31) having a shape with one portion being cut to be spaced apart. Here, when the pressurizing nut unit (20) is fastened to the pressurizing support unit (12) of the connecting main body (10), the clamping O-ring (30) is pressurized to be elastically deformed by the pressurizing support unit (12) of the connecting main body (10) and the stepped protrusion unit (24) of the pressurizing nut unit (20), thereby forming a fixing coupling structure to clamp the outer circumferential surface of the pipe.

Description

Joint Assembly for Pipe Connection {Joint Assembly for Pipe Connection}

The present invention relates to a joint assembly for connecting pipes, and more particularly, to a joint assembly for connecting pipes that can stably couple pipes and facilitate connection work of pipes.

A piping adapter is used to couple to a piping and to connect other objects, such as other piping or parts, to the piping.

In this regard, Korean Patent Registration No. 15538337 discloses a pipe connector and a combination of pipes. The pipe connector and the combination of the pipe include a pipe connector; pipe; And an airtight member, and inserting an end portion of the pipe from the first end of the pipe connector into the inside of the pipe connector. Drawing the distal end of the pipe to the outside of a second end opposite to the first end, and fastening the airtight member to a part of the outer surface of the pipe; Positioning the pipe and the airtight member into the pipe connector; The pipe connector and the pipe are coupled through the step of expanding the outer diameter of a portion of the pipe using a pipe expander.

However, according to the prior art, there is a disadvantage in that it is not easy to connect pipes using a pipe connector, and it is not easy to secure or improve a sealing structure. In addition, there is a disadvantage in that the coupling strength between the pipe and the pipe connection is weak because a stepped part is formed inside the pipe connector and the first expansion part of the pipe is seated therein so that the pipe does not come off.

In addition, since the first and second expansion parts must be formed at the designated positions using the expansion machine during the coupling process, the work is difficult and the work efficiency is degraded, and leakage is blocked only by the airtight member inserted in the form of a sleeve. There is a disadvantage that the reliability of the sealing is poor.

Korean Patent Publication No. 10-1538337

Accordingly, an object of the present invention is to provide a pipe connection joint assembly capable of stably and quickly performing a pipe connection operation as to improve the conventional problems as described above.

In addition, there is an object to provide a pipe connection joint assembly capable of providing a stronger binding force between the pipe and the pipe connection part.

In addition, it is an object of the present invention to provide a joint assembly for connecting a pipe in which leakage is prevented by securing airtightness between a pipe and a pipe connection part.

In order to solve the above technical problem, a pipe connection joint assembly according to an embodiment of the present invention is a pipe connection joint assembly installed at an end of a pipe to connect a pipe, and an insert inserted into the end of the pipe A connection body 10 provided with a pipe part 11 and a pressure support part 12 protruding to be spaced apart from the outside of the insertion pipe part 11; And a pressing nut part 20 having a thread 23 formed on the inner circumferential surface of the connection body 10 and meshing with the pressing support part 12 and provided with a stepped part 24; The clamping is provided with a cutout space 31 having a shape that is generally circular and is disposed between the pressure support part 12 of the connection body 10 and the stepped part 24 of the pressure nut part 20 O-ring (30); Consisting of including, and when the pressing nut part (20) is coupled to the pressing support part (12) of the connection body (10), the clamping O-ring (30) presses the connection body (10) It is elastically deformed by pressure by the stepped portion 24 of the support portion 12 and the pressure nut portion 20, and has a configuration to form a fixed coupling structure that tightens the outer circumferential surface of the pipe.

In addition, in the joint assembly for pipe connection according to an embodiment of the present invention, the pressure contact portion of at least one side of the pressure support portion 12 of the connection body 10 and the mutual pressure contact portion of the clamping O-ring 30 Formed in an inclined surface structure or a curved surface structure, or a pressing contact portion on at least one side of the mutual pressing contact portion of the stepped portion 24 of the pressing nut portion 20 and the clamping O-ring 30 is formed in an inclined surface structure or a curved surface structure As a result, the clamping O-ring 30 is deformed in the radial center direction by the fastening coupling between the connection body 10 and the pressure nut part 20, thereby forming the fixed coupling structure for tightening the outer circumferential surface of the pipe. .

In addition, in the joint assembly for connecting a pipe according to an embodiment of the present invention, the insertion pipe part 11 of the connection body 10 is a point past the fastening position of the pressure nut part 20 toward the end of the pipe. It may have a structure formed with an insertion length extended to.

In addition, in the joint assembly for connecting a pipe according to an embodiment of the present invention, the clamping O-ring 30 may be configured by further comprising a cover member formed of a rubber or synthetic resin material in the form of a tube surrounding an outer surface.

In addition, in the joint assembly for connecting a pipe according to an embodiment of the present invention, the connection body 11 is a portion of the insertion pipe 11 at a portion corresponding to the tightening position of the clamping O-ring 30 with respect to the pipe. It may have a structure provided with a pipe deformation support groove (16-1) formed to a predetermined depth along the outer circumferential surface. At this time, when the pipe (P) is tightened and coupled by the clamping O-ring (30), the pipe (P) is elastically deformed in the radial center direction so that the inner wall of the pipe (P) can enter. The width may be larger than the width of the clamping O-ring 30.

In addition, the joint assembly for pipe connection according to an embodiment of the present invention is disposed in the pipe deformation support groove 16-1 of the connection body 11 so that the clamping O-ring 30 is tightened from the inside of the pipe. It may be configured to further include a plate-shaped elastic body 33 that supports elasticity.

In addition, in the joint assembly for pipe connection according to an embodiment of the present invention, the clamping O-ring 30 may have a structure in which a central groove 34 is provided along an inner circumferential surface thereof.

The joint assembly for pipe connection according to the present invention has the effect of simplifying the work process by easily performing the installation work of the pipe and the pipe connection part.

In addition, it has the effect of increasing the binding force with the pipe by providing a clamping O-ring capable of tightening the pipe by interlocking with the fastening coupling.

In addition, by providing at least one sealing member in the connecting body, the sealing property with the pipe is increased, thereby securing the reliability of the sealing.

In addition, by having a structure surrounding the outer surface of the clamping O-ring with a cover member, it has the effect of more smoothly generating the tightening deformation of the clamping O-ring.

In addition, by providing a structure or configuration capable of alleviating excessive tightening strength in the tightening joint portion of the clamping O-ring, it has the effect of improving the damage or durability of the pipe.

The effects of the present invention are not limited to the above effects, and should be understood to include all effects that can be inferred from the configuration of the invention described in the detailed description or claims of the present invention.

1 is a perspective view of a joint assembly for pipe connection according to an embodiment of the present invention.
Figure 2 is a state of use immediately before clamping of the joint assembly for pipe connection according to an embodiment of the present invention.
Figure 3 is a state of use of the joint assembly for pipe connection according to an embodiment of the present invention.
Figure 4 is a cross-sectional view of the connection body of the joint assembly for pipe connection according to an embodiment of the present invention.
Figure 5 is a cross-sectional view of a pressure nut portion of the joint assembly for pipe connection according to an embodiment of the present invention.
6 is a detailed structure of a clamping O-ring of a joint assembly for pipe connection according to an embodiment of the present invention.
7 is an exploded perspective view of a joint assembly for pipe connection according to an embodiment of the present invention.
Figure 8 is a clamp structure of the joint assembly for pipe connection according to an embodiment of the present invention.
9 is a modified embodiment of the joint assembly for pipe connection according to an embodiment of the present invention.
10 is another modified embodiment of the joint assembly for pipe connection according to an embodiment of the present invention.

Hereinafter, the present invention will be described with reference to the accompanying drawings. However, the present invention may be implemented in a number of different forms, and therefore is not limited to the embodiments described herein.

Throughout the specification, when a part is said to be "connected (connected, contacted, bonded)" with another part, it is not only "directly connected", but also "indirectly connected" with another member in the middle. "Including the case. In addition, when a part "includes" a certain component, it means that other components may be further provided, rather than excluding other components, unless specifically stated to the contrary.

The terms used in the present specification are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present specification, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof does not preclude in advance.

In the present invention, a pipe (or pipe; hereinafter the same) as a connection object refers to a member of a hollow pipe structure, and is a member that provides a flow path for a fluid including a liquid, gas, etc., and the material of the pipe is a semiconductor manufacturing in addition to metal It may be composed of plastics or synthetic resins used industrially in facilities or devices.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings so that those of ordinary skill in the art can easily implement them.

First, looking at each drawing, FIG. 1 is a perspective view of a pipe connection joint assembly according to an embodiment of the present invention, in which the other joint member installed in the first pipe and the connection body installed in the second pipe are coupled by a clamp. It shows the state. Figure 2 is a state diagram of use immediately before clamping of the joint assembly for pipe connection according to an embodiment of the present invention, a state in which the connection body is internally installed in the second pipe and then fixed by fastening and coupling of the pressure nut part, after which the connection body It shows a structure in which a clamp is wrapped around the flange portion and fixed. Figure 3 is a state diagram of a use state of the joint assembly for pipe connection according to an embodiment of the present invention, Figure 3 (a) shows an initial fastening state in which the pressure nut is fastened and coupled to the connection body, Figure 3 (b) is It shows a state in which the connection body and the pressure nut part are fastened and the clamping O-ring is started to pressurize, and FIG. 3(c) shows a structure in which the connection body and the pressure nut part are completely fastened so that the clamping O-ring tightens and fixes the pipe. will be.

Figure 4 is a cross-sectional view of the connection body of the joint assembly for pipe connection according to an embodiment of the present invention, an insertion pipe portion inserted into the pipe and disposed, a pressure support portion having a pressure slope formed at the end, and a pipe seating groove in which the end of the pipe is inserted. And a detailed structure of the connecting body provided with a sealing groove in which the sealing member is installed. 5 is a cross-sectional view of a pressure nut portion of a joint assembly for pipe connection according to an embodiment of the present invention, showing a pressure inclined surface on which a clamping O-ring is pressed and a pressure nut portion provided with a thread screwed to the connection body.

6 shows a detailed structure of the clamping O-ring of the joint assembly for pipe connection according to an embodiment of the present invention, and when the taper part is pressed, it is deformed in the circumferential direction and contracted in the radial direction so that the pipe can be tightened. It shows the provided clamping O-ring. 7 is an exploded perspective view of a joint assembly for connecting a pipe according to an embodiment of the present invention, comprising a connection body formed to be partially inserted into a pipe, a clamping O-ring, a pressure nut part, etc., and fixedly installed at the end of the pipe It shows a structure that provides a flange for piping connection. Figure 8 is a clamp of the joint assembly for pipe connection according to an embodiment of the present invention, Figure 8 (a) is a plan view of the clamp, Figure 8 (b) is a side view of the clamp, Figure 8 (c) shows a side view of the clamp in an unfolded state.

9 is a modified embodiment of the joint assembly for pipe connection according to an embodiment of the present invention, in which an excessive coupling force of the clamping O-ring is generated in generating a fixed coupling force with the pipe by deforming the clamping O-ring by fastening and pressing the pressure nut portion. It shows a structure provided with a pipe deformation support groove or elastic support means for alleviation. 10 is another modified embodiment of the joint assembly for pipe connection according to an embodiment of the present invention, showing a structure using a clamping O-ring provided with a central groove so as to somewhat alleviate the excessive coupling force of the clamping O-ring.

The joint assembly for pipe connection according to an embodiment of the present invention is a device for stably connecting pipes without leakage, as shown in FIGS. In the process of replacing the pipe of the pipe, it relates to a joint assembly for pipe connection configured to simplify the pipe connection operation and reduce the cost. As a detailed configuration of the device, it may be configured to include a connection body 10, a pressure nut part 20, a clamping O-ring 30, and a sealing member 40, and as shown in FIG. 2, the connection body ( After 10) is internally fixed to the end of the pipe (P), the other joint member (10a) fixed to the end of the other pipe (P1) and the connecting body (10) are coupled by a clamp (50), thereby connecting the pipe (P). ) And other pipes (P1) can be interconnected. Here, the coupling structure of the other joint member (10a) and the connection body (10) is not limited to the clamp method, for example, both sides plan so that the other joint member (10a) and the connection body (10) can be coupled and fixed. A structure in which the branch is fastened with bolts may also be employed.

On the other hand, the other joint member (10a) fixed to the end of the other pipe (P1) may be configured by using the joint assembly for pipe connection of the present invention in common, but is not limited thereto and may be configured using a different coupling structure or configuration. May be.

A joint assembly for connecting a pipe according to an embodiment of the present invention, as shown in FIG. 3, has a basic configuration, a connection body 10 in which a part is inserted and disposed at an end of the pipe P, and the connection body The pressure nut part 20 configured to be screwed with (10), the clamping O-ring 30 formed in a shape that is partially cut apart, and the pipe P and the connecting body 10 are interposed between the pipe to perform a sealing function. And one or more sealing members 40 and the like. 3(a) shows the initial state of fastening of the connection body 10 and the pressure nut part 20, and FIG. 3(b) shows the fastening combination of the connection body 10 and the pressure nut part 20 It shows a state in which the pressure of the clamping O-ring 30 is started. Thereafter, when the fastening joint is further advanced, the clamping O-ring 30 is changed to the radial center direction by pressure and deformation occurs in the circumferential direction, so that the clamping O-ring 30 tightens the pipe (P). c). In this way, the pipe (P) is inserted into the pipe seating groove (14) of the connection body (10), and the pressure nut (20) prepared in advance with the clamping O-ring (30) inserted into the connection body (10) is fastened. By fixing it becomes possible to quickly perform the piping connection.

In the joint assembly for pipe connection according to an embodiment of the present invention, the connection body 10 is a configuration used for coupling with the other joint member 10a, as shown in FIG. 4, and as a detailed structure, a pipe (P ) To be inserted into the pipe (P) so that it can be installed in the inner longitudinal direction of the pipe (P), the insertion pipe portion (11) of a hollow pipe structure, the flange portion coupled to the other joint member (10a) at the outer end of the insertion pipe portion (11) (11-1), the pressure support portion 12 formed to protrude from the outside of the insertion pipe portion 11 in the extending direction of the insertion pipe portion 11 and provided with a thread 13 on the outer circumferential surface, and the end of the pipe P It may be configured to include a pipe seating groove (14) that is internally seated. The pipe seating groove 14 provided between the insertion pipe part 11 and the pressure support part 12 is preferably formed to a predetermined depth so that the end of the pipe P is inserted and seated, and the insertion pipe part 11 It is preferable to minimize interference or jamming with the pipe (P) when inserting the insertion pipe portion 11 into the pipe (P) by rounding the end of the pipe (P).

On the other hand, one or more sealing grooves 16 in which the sealing member 40 provided to secure airtightness between the insertion pipe part 11 and the inner side of the pipe P is partially seated may be provided in the insertion pipe part 11. If necessary, a sealing step 18 formed so that the connection part sealing member 60 is seated when combined with the other joint member 10a may be further provided. The connection body 10 is not limited to any one configuration or structure, and the flange portion 11-1 corresponds to each other for consistency with the flange portion of the other joint member 10a when coupled by the clamp 50 It is preferable to be formed in a shape that is, and when adopting a method of fastening and coupling both flange portions by bolts may be formed in a structure having a plurality of fastening holes.

In addition, a pressure inclined surface 15 formed in an inclined shape may be further provided at an end of the pressure support part 12 of the connection body 10. The pressure inclined surface 15 is formed in an inclined shape toward the center of the pipe and in the direction of the pipe seating groove 14, so that the clamping O-ring 30 by the fastening coupling of the pressure nut part 20 and the connection body 10 In the process of pressing the clamping O-ring 30 may cause deformation to be contracted in the radial center direction, and the pipe end may smoothly enter the pipe seating groove 14 in the process of inserting the insertion pipe part 11 inside the pipe. It can also perform a guiding function. At this time, the pressure inclined surface 15 may have the same inclination as the tapered portion 32 of the clamping O-ring 30 or may have a different inclination.

In addition, the insertion pipe portion 11 of the connection body 10 may have a structure formed with an insertion length L extending to a point past the fastening position of the pressure nut portion 20 toward the inside of the end of the pipe. With such an extended insertion length, the insertion connection body 10 is disposed at the end of the pipe to provide a stable arrangement, so that when assembling, the fastening and coupling work with the pressure nut 20 can be smoothly performed, and external shock or earthquake, etc. It has the effect of reducing the posture fluctuation of the connection body 10 even under the vibration load of the clamping O-ring 30 and also stably maintaining the tightening state of the coupling.

In addition, the insertion pipe portion 11 and the pipe P of the connection body 10 may have a structure in which the inner wall surface is coated with a synthetic resin or a composite material in order to prevent damage to the composition due to the fluid flowing therein. have.

In the joint assembly for piping connection according to an embodiment of the present invention, the pressure nut part 20 is, as shown in FIG. 5, the clamping O-ring 30 in the process of being fastened and coupled with the connection body 10 in the radial center direction. It is a configuration that presses the clamping O-ring 30 so as to be deformed by contraction, and as a detailed structure, the nut body part 21 formed with an inner diameter into which the clamping O-ring 30 can be inserted and the connection body 10 are mutually meshed. It may be configured to include a screw thread 23 provided on the inside of the nut body 21, a stepped portion 24 that protrudes toward the radial center so that the pipe penetrates, but the clamping O-ring 30 cannot pass. have.

In addition, the stepped portion 24 may be further provided with a pressure inclined surface 25 formed in an inclined shape at a portion corresponding to the clamping O-ring 30. The pressure inclined surface 25 is formed in an inclined shape toward the center of the pipe and the entry direction, so that the clamping O-ring in the process of pressing the clamping O-ring 30 by fastening coupling between the pressure nut part 20 and the connecting body 10 (30) This can cause deformation to shrink in the radial center direction. In this case, the pressure inclined surface 25 may have the same inclination as the tapered portion 32 of the clamping O-ring 30 or may have a different inclination.

In addition, in order to smoothly perform the fastening drive of the pressure nut part 20 when the pressure nut part 20 is fastened to the connection body 10, the pressure nut part 20 includes a handle for an operator or a tool A dragon structure may be additionally provided. That is, for example, a tool groove 27 is provided as shown in FIG. 5 to temporarily mount a tool that rotates the pressing nut part 20, or a chamfered structure or a polygonal outer surface is provided on the outer circumferential surface to temporarily mount the tool. can do. Meanwhile, a relief groove 27 required for processing the inner circumferential surface of the pressing nut part 20 by a tool may be provided. In addition, the connection body 10 is also in a predetermined position so that the assembly worker can stably maintain the posture of the connection body 10 when the pressure nut part 20 is fastened and coupled to the connection body 10. For example, a tool groove or a chamfered structure may be provided on an outer circumferential surface adjacent to the flange portion 11-1.

In the joint assembly for pipe connection according to an embodiment of the present invention, the clamping O-ring 30 is a pipe (P) by the pressing force of the connection body 10 and the pressure nut 20, as shown in FIG. It deforms in the radial center direction of and tightens the pipe (P) to form a fixed structure, and as a detailed structure, it has a circular ring structure as a whole, but a cutout space 31 of a shape that is partially cut and spaced apart, and the above It may be configured to include a tapered portion 32 provided at a portion corresponding to the pressure inclined surface 15 of the connection body 10 or the pressure inclined surface 25 of the pressure nut portion 20. The clamping O-ring 30 is not limited to any one configuration or structure, for example, the tapered portion 32 is a portion corresponding to the connection body 10 and a portion corresponding to the pressure nut portion 20 It may be formed on either or both sides of the tapered portion 32, in addition to the simple inclined surface structure, a predetermined curved surface structure may be employed as necessary.

The clamping O-ring 30 is deformed in the radial center direction and circumferential direction of the pipe P in the process of fastening the connection body 10 and the pressure nut part 20, thereby tightening the outer surface of the pipe P. As a medium to form a solid fixing force of the connection body 10 installed at the end of the pipe (P). As the connection body 10 and the pressure nut part 20 are fastened, the pressure inclined surface 25 of the pressure nut part 20 presses the tapered part 32 of the clamping O-ring 30 and slides with each other to clamp the O-ring 30 The pressure inclined surface 15 of the pressure support part 12 causes a deformation of pushing the tapered part 32 of the clamping O-ring 30 toward the pipe P side. Due to the deformation, the clamping O-ring 30 tightens the pipe P.

In addition, the clamping O-ring 30 may further include a cover member formed of a plastic or elastic material in the form of a tube. Not only can the surface of the clamping O-ring 30 be protected by the cover member, but also the relative movement of the surface of the clamping O-ring 30 at the mutual contact portion when the connection body 10 and the pressure nut part 20 are deformed under pressure. It can have the effect of smoothing.

In the joint assembly for pipe connection according to an embodiment of the present invention, as shown in FIGS. 3 and 7, the connection body 10 is installed and fixed to the end of the pipe P before fastening with the other joint member 10a. It is desirable to form a state. At this time, the pressure nut part 20 and the clamping O-ring 30 are prepared by passing through the end of the pipe P in the order, and before installing the connecting body 10 to the end of the pipe P, the insertion pipe part 11 It is preferable that at least one sealing member 40 is provided in the sealing groove 16. In this way, after installing the connection body 10 to the end of the pipe (P), by fastening and coupling the pressure nut part 20 with the connection body 10, the connection body 10 is fixed to the end of the pipe (P). The order of assembly to be formed can be used. The joint assembly for pipe connection of the present invention is not limited to any one assembly sequence, and the connection body 10 forms the remaining coupling structure after being coupled with the other joint member 10a, or a connection provided with a sealing member 40 An assembly sequence in which the clamping O-ring 30 is first approached to the main body 10 and the pressure nut 20 is fastened may also be employed.

In the joint assembly for pipe connection according to an embodiment of the present invention, the clamp 50 is a flange portion 11-1 of the connection body 10 fixedly installed at the end of the pipe P, as shown in FIG. 8. It is a configuration that combines the other side joint member (10a) coupled to the end of the other pipe (P1), as a detailed configuration, by mutual coupling of the sub-body (51-1, 51-2) the connection body (10) and A clamp body part 51 for fixing the other joint member 10a together, a fixing screw part 52 hinged with the clamp body part 51, and an adjustment member that rotatably engages with the fixing screw part 52 ( 53), and a hinge portion 54 that is a hinge coupling portion may be provided between the clamp body portion 51 or the fixing screw portion 52.

After wrapping the other joint member (10a) and the flange portion (11-1) in the mutually approached state by the clamp (50), the sub-adjustment member (53) meshed with the fixing screw (52) is rotated forward. The bodies 51-1 and 51-2 are fixed to each other, and the coupling of the other joint member 10a and the flange 11-1 can be easily released by rotating the adjustment member 53 in reverse. There will be. The clamp 50 is not limited to any one configuration or structure, for example, a gripping groove is formed on the outer surface of the adjusting member 53 so that the operator can easily rotate the adjusting member 53 by hand. It can be configured to be able to.

On the other hand, the joint assembly for pipe connection according to an embodiment of the present invention uses the tightening coupling force of the pipe P by the clamping O-ring 30, but the tightening coupling force is excessive, causing damage to the pipe or deteriorating physical properties. It may be provided with additional technical means for improving the phenomenon of lowering the durability. That is, for example, as shown in FIG. 9, the outer peripheral surface of the insertion tube 11 is placed on the portion corresponding to the tightening position by the clamping O-ring 30 of the outer peripheral surface of the insertion tube 11 of the connection body 10. Accordingly, a pipe deformation support groove 16-1 of a predetermined depth may be provided. By having such an inner recess structure, when the pipe P is tightened by the clamping O-ring 30, the pipe P can be elastically deformed in the radial center direction, so that the pipe P at the tightening joint portion of the clamping O-ring 30 ), and the pipe deformation support groove (16-1) provides a stepped structure in the longitudinal direction of the pipe (P) to limit the disengagement of the connection body (10). I can.

In addition, a structure including a plate-shaped elastic body 33 in the pipe deformation support groove 16-1 may be used. In this case, a plate-shaped elastic body 33 having a suitable rigidity according to the thickness or material of the pipe P, requirements, etc. It is possible to adjust the supporting reaction force by replacing it. In other words, since the support reaction force can be adjusted only by replacing the plate-shaped elastic body 33, it is not required to change the depth of the pipe deformation support groove 16-1, so the remaining components such as the connecting body 10 are used jointly to connect the pipe. It has the advantage of implementing a joint assembly.

On the other hand, the pipe deformation support groove (16-1) and the plate-shaped elastic body 33 are not limited to any one structure or configuration, for example, the plate-shaped elastic body 33 is the bottom of the pipe deformation support groove (16-1) At least one end may be formed in a rolled shape so that the end thereof is slidable, and if necessary, one or more plate-shaped elastic bodies may be overlapped and configured. In addition, the plate-shaped elastic body may employ a closed ring structure, or may adopt a ring structure in which one side is cut in consideration of mounting convenience, if necessary.

In the joint assembly for pipe connection according to an embodiment of the present invention, the clamping O-ring 30 may be configured with a central groove 34 on an inner circumferential surface as shown in FIG. 10. As the connection body 10 and the pressure nut 20 are fastened, the clamping O-ring 30 tightens the pipe P, and both ends of the clamping O-ring 30 slide in a direction that opens on the outer circumference of the pipe P. It provides the effect of alleviating the pressing force by elastic deformation. In this way, the clamping O-ring 30 provided with the central groove 34 may have reduced rigidity compared to the clamping O-ring 30 not provided with such a structure, and thus other configurations such as the connection body 10 and the pressure nut part 20 Likewise, it has an improved effect in that it is possible to provide an appropriate tightening force according to the thickness or material of the pipe P, requirements, etc. without changing the value. The clamping O-ring 30 is not limited to any one structure or configuration, and the central groove 36 is preferably formed in the center so that pressure is not concentrated to either side, and the pipe-side contact portion is formed in a non-sharp shape. It is desirable to be.

On the other hand, the joint assembly for pipe connection of the present invention is not limited to the exemplary structure of the foregoing description. For example, the pressure support part 12 of the connection body 10 and the clamping O-ring 30 have a clamping O-ring 30 even when the pressure contact part of either side is formed in an inclined surface structure or a curved surface structure. ) Is deformed in the radial center direction to form a pipe tightening structure, and the pressure contact portion between the stepped portion 24 of the pressure nut portion 20 and the clamping O-ring 30 is also Even when the pressing contact portion is formed in an inclined surface structure or a curved surface structure, deformation occurs in the radial center direction when the clamping O-ring 30 is pressed, thereby forming a pipe tightening structure. In addition, even when the pressure contact portion of the inclined surface structure or the curved surface structure is formed only on either side of the pressing of the clamping O-ring 30, deformation occurs in the radial center direction when the clamping O-ring 30 is pressed, thereby forming a pipe tightening structure. can do.

In addition, the above description of the present invention is for illustrative purposes only, and those of ordinary skill in the art to which the present invention pertains will understand that it is possible to easily transform it into other specific forms without changing the technical spirit or essential features of the present invention. I will be able to. Therefore, it should be understood that the embodiments described above are illustrative in all respects and are not limiting. For example, each component described as a single type may be implemented by being distributed or divided, and similarly, components described as being distributed or divided may also be implemented in a combined form within the scope of the understanding of a person skilled in the art. have. In addition, the steps of the method may be performed alone or in a plurality of times in combination with at least one other step.

The scope of the present invention is indicated by the claims to be described later, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts should be construed as being included in the scope of the present invention.

10: connection body 10a: other side joint member
11: insertion tube part 11-1: flange part
12: pressure support part 13: thread
14: pipe seating groove 15: pressure slope
16: sealing groove 16-1: pipe deformation support groove
18: sealing step
20: pressure nut portion
21: nut body portion 23: thread
24: stepped portion 25: pressure slope
27: tool groove
30: clamping O-ring
31: incision spaced portion 32: tapered portion
33: plate-shaped elastic body 34: central groove
40: sealing member
50: clamp
51: clamp body part 52: fixing screw part
53: adjustment member 54: hinge portion
60: connection part sealing member
P: pipe

Claims (7)

In the pipe connection joint assembly installed at the end of the pipe to connect the pipe,
A connection body 10 provided with an insertion pipe part 11 inserted into the end of the pipe, and a pressure support part 12 protruding from the outside of the insertion pipe part 11 to be spaced apart; And
A pressing nut part 20 having a screw thread 23 which is mutually engaged with the pressing support part 12 of the connection body 10 and provided with a stepped part 24 on the inner circumferential surface;
The clamping is provided with a cutout space 31 having a shape that is generally circular and is disposed between the pressure support part 12 of the connection body 10 and the stepped part 24 of the pressure nut part 20 O-ring (30); is configured to include,
When the pressure nut part 20 is fastened with the pressure support part 12 of the connection body 10, the clamping O-ring 30 is connected to the pressure support part 12 and the pressure nut part 20 of the connection body 10. It is pressurized and elastically deformed by the stepped portion 24 of the pipe and forms a fixed coupling structure that tightens the outer circumferential surface of the pipe,
The connection body 10 is a pipe deformation support groove 16-1 formed at a predetermined depth along the outer circumferential surface of the insertion pipe 11 at a portion corresponding to the tightening position of the clamping O-ring 30 with respect to the pipe. Is equipped,
When the pipe (P) is tightened and coupled by the clamping O-ring (30), the width of the pipe deformation support groove (16-1) is so that the pipe (P) elastically deforms in the radial center direction so that the inner wall of the pipe (P) can enter. It is formed larger than the width of the clamping O-ring 30,
It is configured to further include a plate-shaped elastic body 33 disposed in the pipe deformation support groove 16-1 of the connection body 10 to elastically support from the inside of the pipe when the clamping O-ring 30 is tightened and coupled,
The insertion pipe portion 11 of the connection body 10 is formed with an insertion length L extending to a point past the fastening position of the pressure nut portion 20 toward the inside of the end of the pipe,
A pipe that enters the inside of the pipe deformation support groove 16-1 by elastically deforming in the radial center direction by forming a stepped structure at both ends of the pipe deformation support groove 16-1 based on the longitudinal direction of the pipe (P) to form a longitudinal locking protrusion with respect to the inner wall,
The clamping O-ring 30 is a pipe connection joint assembly, characterized in that a cover member formed of rubber or synthetic resin material is further provided to surround the outer surface of the clamping O-ring 30 in a tube shape.
The method of claim 1,
At least one of the pressing support portion 12 of the connection body 10 and the mutual pressing contact portion of the clamping O-ring 30 is formed in an inclined surface structure or a curved surface structure,
The pressing contact portion of at least one side of the stepped portion 24 of the pressing nut portion 20 and the mutual pressing contact portion of the clamping O-ring 30 is formed in an inclined surface structure or a curved surface structure,
The clamping O-ring 30 is deformed in the radial center direction by the fastening coupling of the connection body 10 and the pressure nut 20 to form the fixed coupling structure for tightening the outer circumferential surface of the pipe. Joint assembly.
The method of claim 1,
The clamping O-ring (30), a pipe connection joint assembly, characterized in that the central groove (34) is provided along the inner circumferential surface.
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