KR101638312B1 - Pipe joint adapter - Google Patents

Abstract

The present invention relates to a pipe joining adapter. The pipe joining adapter comprises: a body formed in a hollow shape to insert a first and a second pipe thereinto from both sides thereof, and provided with a space formed between outer circumferential surfaces of the first and the second pipe inserted thereinto and a support protrusion formed on one side of the space where the first pipe is positioned; a stopper installed in the space and provided with a stopping unit to support ends of the first and the second pipe; grip rings which are installed in the space, are positioned on both sides to dispose the stopper therebetween, and fix the first and the second pipe; O-rings positioned on both sides to disposed the stopper therebetween, inserted into the first and the second pipe, and installed in the space; and a nut unit inserted into the second pipe and screw-mounted on the body to allow a support unit to push the O-rings and the stopper by tightening the same to maintain airtightness of the first and the second pipe by compression of the O-rings. According to the present invention, reliability and convenience for connecting pipes having various materials and purposes as well as metal pipes can be increased. Internal components are maintained in an initial assembled order and form to prevent misuse. The nut unit mounted on the body has a structure of rotating with no traction in an unscrewed state to make disassembly of the nut unit difficult.

Description

[0002] Pipe joint adapter [0003]

The present invention relates to a pipe adapter, and more particularly, to a pipe adapter which improves reliability and convenience of a pipe having various materials and uses as well as a metal pipe, prevents misuse, and makes it difficult to disassemble the nut, To the tube adapter.

BACKGROUND ART [0002] In general, various types of pipe fittings are used to connect pipes that provide a fluid passage of a refrigerant or the like, in various fields as well as household appliances such as a refrigerator, an air conditioner, and a washing machine.

As a technique for a conventional pipe fitting, there has been proposed a "pipe connection structure in which adhesion force is increased" in Korean Utility Model Registration No. 20-0178047. This is because a grip ring inserted into a connection port, And a coupling cap threadably coupled to the outer circumferential surface of the connection port, wherein the grip ring comprises a ring-shaped frame plate, An inclined support plate integrally formed on the inner diameter of the edge plate and slightly inclined inward, and a grip blade inclined equally in an oblique direction of the inclined support plate and formed in a semicircular shape at regular intervals.

However, in such a conventional technique, the use of one of the connecting pipes to form a male screw is limited to the joining of a synthetic resin pipe, thereby applying to a metal pipe such as an aluminum pipe or a copper pipe used for fluid movement of a refrigerant or the like It is difficult or causes a lot of inconveniences in application, and there is a problem that the airtightness of both pipes is uneven due to the use of packing for one pipe only, and in particular, the airtightness holding force is limited in the case of high pressure.

In addition, conventional pipe fittings including the conventional art have a problem that when a worker omits or damages internal components, or when the direction of joining components changes, a fluid leakage accident occurs.

In order to solve the problems of the prior art as described above, the present invention improves the reliability and convenience of the joints of various materials and pipes as well as a metal pipe, and maintains the order and shape of the first internal assemblies, And the nut portion coupled to the body portion is structured to be idle in a state in which the screw connection is released so as to make it difficult to disassemble the nut portion so that the internal components can not be arbitrarily damaged, In addition to easy handling and storage of the components, it minimizes the risk of loss. The use of a single nut makes it easy to assemble and work, maintain the state of assembly of components, The purpose of this is to prevent the destruction of threads, etc. due to misassembly. .

Other objects of the present invention will become readily apparent from the following description of the embodiments.

In order to achieve the above object, according to one aspect of the present invention, the first and second pipes are made hollow so as to be respectively inserted from both sides, and the first and second pipes are connected to the outer peripheral surfaces of the first and second pipes inserted inward A body having a support jaw formed at one side of the space portion located in the first pipe; A stopper provided in the space portion and having an engagement portion for supporting ends of the first and second pipes, respectively; A grip ring installed in the space portion so as to be positioned on both sides with the stopper interposed therebetween, the grip ring fixing each of the first and second pipes; An o-ring installed in the space portion by being positioned on both sides of the stopper so as to be inserted into the first and second pipes; And a nut portion that is fitted to the second pipe and is screwed to the body and is tightened so that the supporting portion pushes the O-ring and the stopper so that each of the O-rings maintains airtightness of the first and second pipes by compression; Wherein the adapter is provided with a tubular adapter.

The body is provided with a first latching groove formed on the inner surface of the space portion, a first stop ring is received in the first latching groove, and the stopper is hollowed to surround the outer sides of the first and second pipes A second stop groove is formed on the side opposite to the first stop ring so that the first stop ring is engaged with the first stop ring, The first stop ring is provided so as to be movable within a limited range in the longitudinal direction of the body so that the range of movement of the stopper along the longitudinal direction is limited .

Wherein the grip ring is provided so as to be in contact with both sides of the stopper, and the O-ring is installed respectively in a plurality of positions between the grip ring and the support jaw and between the grip ring and the support, A guard may be provided between the two.

The body may have an inclined pressing surface that is inclined toward the supporting jaw at one end of the space.

The stopper may form an inclined guide portion such that the inner side surfaces of both ends of the stopper are inclined toward the end.

The grip ring includes a ring body positioned at an end of the stopper; A plurality of first and second pipes which are spaced apart from each other along the inner circumferential surface of the ring body and are inclined toward the inclined guide portion to have a tension so as to prevent the first or second pipe Fixed government; And a reinforcement insertion portion formed to be bent from the outer side of the ring body and inserted between the body and the stopper.

The stopper may be formed with an insertion groove into which the reinforcing insertion portion is inserted, on both outer sides of the stopper.

The body is provided with a third latching groove around the outer side surface thereof and a second stop ring is received in the third latching groove. When the latching body is inserted into the body, The jaw is formed, and the engagement jaw is engaged with the second stop ring, so that the separation from the body can be suppressed.

The body and the nut may be formed with first and second screw engagement portions to be screwed together. When the engagement portion is engaged with the second stop ring by moving the nut in a direction separating from the body, 1 and the second screw engaging portion can be spaced apart from each other.

The nut portion may be formed such that the support portion is separated from a nut that is inserted into the second pipe and the body and is screwed to the body.

The support portion may include a bushing surrounding the second pipe, and may be supported in a support groove formed to face the O-ring on the inner side of the nut.

According to the pipe adapter of the present invention, it is possible to improve the reliability and convenience of the joints of various materials and pipes as well as the metal pipe, and to prevent misuse by allowing the internal components to maintain their original assembled order and shape And the nut portion coupled to the body portion may have a structure in which the nut portion is loosened in a state in which the screw connection is released so that disassembly of the nut portion can be made difficult so that the internal components can not be arbitrarily damaged, It is possible to minimize the possibility of loss of the components and to prevent the components from being disassembled. Also, since the single nut portion can be used, the assembly and the workability can be improved, The initial fastening such as positioning of the screw is smoothly carried out, The phenomenon can be prevented.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a side cross-sectional view of a tube adapter according to one embodiment of the present invention.
2 is a plan view showing a grip ring of a tube adapter according to one embodiment of the present invention.
3 to 6 are side cross-sectional views for explaining the operation of the tube adapter according to one embodiment of the present invention.

The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated and described in detail in the drawings. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but is to be understood to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention, And the scope of the present invention is not limited to the following examples.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings, wherein like or corresponding elements are denoted by the same reference numerals, and redundant explanations thereof will be omitted.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a side cross-sectional view of a tube adapter according to one embodiment of the present invention.

1, a tube adapter 100 according to an embodiment of the present invention includes a body 110, a stopper 120, a grip ring 130, an O-ring 140, and a nut portion 150 can do.

The body 110 is hollow so that the first and second pipes 10 and 20 (shown in FIG. 6) are inserted into the first and second pipes 10 and 20, respectively, and the outer peripheral surfaces of the first and second pipes 10 and 20 And a supporting protrusion 112 is formed on one side of the space 111 located in the first pipe 10. [

The body 110 may be formed with an inclined pressing surface 114 which is inclined at one end of the space 111 toward the supporting step 112. The tapered pressing surface 114 is compressed by the stopper 120 in comparison with the O-ring 140 which is directly compressed by the nut portion 150 when the nut portion 150 is screwed on the body 110 The O-ring 140 compressed by the stopper 120 increases the adhesion to the first pipe 10 (shown in FIG. 6) so as to compensate for the reduction in the compressive force of the O-ring 140, 140) can maintain a uniform airtight force. The inclined pressing surface 114 can form an inclination angle? In the range of 1 to 15 degrees with respect to the horizontal line so as to be suitable for compensating the air tightness of the O-ring 140. [ In addition, the body 110 may have a stepped groove 171 formed on the outer circumferential surface of the side where the nut portion 150 is screwed. The stepped groove 171 is formed in a groove shape so as to support the end of the nut portion 150 and may restrict the excessive screwing of the nut portion 150 screwed to the body 110 have.

The stopper 120 is provided in the space portion 111 and a latching portion 121 for supporting the ends of the first and second pipes 10 and 20 (shown in FIG. 6) is formed. The stopper 120 can form the inclined guide portion 124 such that the inner side surfaces of the stopper 120 are inclined toward the end. This inclined guide portion 124 facilitates the insertion of the first and second pipes 10 and 20 as well as minimizes the interference with the grip ring 130. The stopper 120 may have an insertion groove 125 through which the reinforcing insertion portion 133 of the grip ring 130 is inserted.

The body 110 may have a first engagement groove 113 formed along the inner surface of the space 111 such as an inner peripheral surface thereof and the first stop ring 171 may be received in the first engagement groove 113 have. The stopper 120 may be hollow to surround the outer sides of the first and second pipes 10 and 20 (shown in FIG. 6), and may include a pair of And a second latching groove 123 may be formed so that the first stop ring 171 is engaged with the side of each of the bodies 122 facing each other.

Any one or both of the first and second latching grooves 113 and 123 can be moved by the first stop ring 171 in a limited range in the longitudinal direction of the body 110 so that the stopper 120 can move in the longitudinal direction So that the range of movement is limited. The stopper 120 functions to provide a seat for the grip ring 130 and allows the o-rings 140 on both sides to be uniformly compressed with respect to the first stop ring 171 when the nut 150 is tightened Can play a role. The compression amount of the O-ring 140 at the time of tightening the nut portion 150 can be compressed on both sides of the stopper 120, for example, 1.6 mm. The first stop ring 171 can prevent the stopper 120 and the like from being excessively moved toward one side when the pipes 10 and 20 are inserted into both sides of the stopper 120, And the O-ring 140 can be prevented from being shifted to one side.

The grip ring 130 is installed in the space portion 111 so as to be positioned on both sides of the stopper 120 and fixes the first and second pipes 10 and 20 (shown in FIG. 6). The grip ring 130 may be disposed on both sides of the stopper 120.

The O-rings 140 are installed in the space portion 111 by being positioned on both sides of the stopper 120 so as to be inserted into the first and second pipes 10 and 20 (shown in FIG. 6), respectively. The O-rings 140 may be installed in multiple, e.g., one pair, between the grip ring 130 and the support jaws 112, and between the grip ring 130 and the supports 152, respectively. In addition, the O-ring 140 can increase the sealing force by applying AN209 (sunlight diameter: 3.53 mm) in order to prevent the sealing force from being lowered compared with the outer diameter of most pipes due to the diameter of 3 mm in the conventional case.

A guard 160 may be provided between the grip ring 30 and the O-ring 140. The guard 160 is a plate-shaped ring member, which allows the pressing force by the grip ring 130 to be accurately transmitted to the O-ring 140, and can have an appropriate thickness for preventing deformation.

The nut portion 150 is fitted to the second pipe 20 (shown in FIG. 6) and is screwed to the body 110 so that the support portion 151 pushes the O-ring 140 and the stopper 120, 140) to maintain the airtightness of the first and second pipes 10, 20 (shown in Figure 6) by compression. The nut portion 150 may prevent damage to the grip ring 130, the O-ring 140 and the guard 160 installed in the space 111 of the body 110, The airtightness of the first and second pipes 10 and 20 (shown in Fig. 6) can be maintained by the compression of the O-ring 140. [

The body 110 may have a third engagement groove 116 formed around the outer surface thereof and the second stop ring 172 may be received in the third engagement groove 116. When the nut 150 is inserted into the body 110, a locking protrusion 154 may be formed to extend over the second stop ring 172, and the locking protrusion 154 may be formed on the second stop ring 172 So that separation from the body 110 can be suppressed. The first and second screw coupling portions 115 and 153 may be formed so that the body 110 and the nut portion 150 are screwed to each other and the nut portion 150 moves in a direction in which the nut portion 150 is separated from the body 110 The first and second screw engagement portions 115 and 153 may be spaced from each other by a predetermined distance A, for example, about 0.5 mm when the stopping jaw 154 is engaged with the second stop ring 172, The nut 150 can be freely rotated from the body 110 so that the nut 150 can not be separated from the body 110 when the body 150 is moved in a direction separating from the body 110. [ In addition, the first and second stop rings 171 and 172 may have various cross-sectional shapes including a circular shape or a quadrangle shape, and may be made of various metal materials including brass or SUS, and are not necessarily so.

The nut portion 150 is formed such that the support portion 152 is separated from the nut 151 that is inserted into the body 110 by inserting the second pipe 20 (shown in FIG. 6) and the body 110 inward . The support 152 may be a bushing that surrounds the second pipe 20 (shown in FIG. 6) and may be supported by a support groove 155 formed to face the O-ring 140 on the inside of the nut 151 . The support portion 152 may have a gap with the O-ring 140 by forming the clearance B before the nut 151 is screwed into the body 110. [ The nut portion 150 may be made of brass together with the body 110 and the stopper 120 and may be made of various metals or alloys thereof and may be made of the same material as that of the first and second pipes 10, And may be made of various materials in consideration of the material and the pressure of the fluid.

1 and 2, the grip ring 130 includes a ring body 131 positioned at an end of the stopper 120 and a plurality of spaced apart gaps formed along the inner circumferential surface of the ring body 131, (See FIG. 6) that is inclined toward the side of the ring portion 124 and has a tension, and fixes the first or second pipe 10, 20 And a reinforcement insertion portion 133 formed to be bent from the outer side of the ring body 131 and inserted between the body 110 and the stopper 120. The reinforcing insertion portion 133 may be formed in the insertion groove 125 formed in the stopper 120 described above. The grip ring 130 compensates for a case where the grip ring 130 does not maintain its inherent shape during pipe connection and nut tightening and causes deformation and deteriorates the releasing force. While retaining the inherent shape, thereby maintaining a constant gripping force.

The operation of the pipe adapter according to the present invention will now be described.

1, in the initial state, the engagement protrusions 154 of the nut portion 150 are coupled by the second stop ring 172 in a state where the body 110 and the nut portion 150 are separated by about 0.5 mm The nut portion 150 can be freely rotated while the nut portion 150 can not be detached from the body 110. In this case, the support portion 152 of the nut portion 150 may maintain the separation distance so as not to compress the O-ring 140, thereby minimizing damage to the O-ring 140 due to deformation.

3, when the first pipe 1 is inserted from one side of the body 110, the stopper 120 is pushed by a predetermined distance, for example, 1.5 mm in the inserting direction of the first pipe 10, The O-rings 140 and the like will no longer be subjected to a load at the level of fine interference, and as a result, the second pipe 20 (shown in FIG. 4) It is possible to solve the problem that the stopper 120 or the like is excessively pushed in the inserting direction.

4, when the second pipe 20 is inserted from the other side of the body 110, the stopper 120 or the like is tilted in this inserting direction and prevented from being excessively tilted by the first stop ring 171 do. It is a matter of course that the insertion order of the first and second pipes 10 and 20 can be performed differently from the above example.

5 and 6, the nut portion 150 is screwed to the body 110 by a manual operation or a tool operation such as a spanner, so that the support portion 152 pushes the stopper 120 together with the O- The O-rings 140 are compressed and expanded in a direction perpendicular to the direction in which the O-rings 40 are compressed, so that the sealing of the first and second pipes 10 and 20 can be accurately and uniformly performed have. In this case, the stopper 120 can be compressed to, for example, 7 mm to 5.4 mm in the case of the O-ring 140 located on the left, and after the O-ring 140 is compressed, by the engagement of the first stop ring 171 The additional compression amount of 1.6 mm can compress the O-ring 140 located on the right side. Accordingly, in this case, the total compression amount of the O-ring 140 is 3.0 to 3.2 mm, and the O-ring 140 on one side can be compressed to 1.5 to 1.6 mm, which is half thereof.

Although the present invention has been described with reference to the accompanying drawings, it is to be understood that various changes and modifications may be made without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the scope of the appended claims and equivalents thereof.

10: first pipe 20: second pipe
110: body 111:
112: support jaw 113: first engagement groove
114: inclined pressing surface 115: first screw coupling portion
116: third engaging groove 117: stepped groove
120: stopper 121:
122: body 123: second latching groove
124: inclined guide portion 125: insertion groove
130: Grip ring 131: Ring body
132: fixing portion 133: reinforcing insertion portion
140: O-ring 150: Nut portion
151: nut 152:
153: second screw coupling part 154:
155: support groove 160: guard
171: first stop ring 172: second stop ring

Claims (11)

Wherein the first pipe and the second pipe are hollow so as to be inserted into the first pipe and the second pipe, respectively, and a space is formed between the first pipe and the second pipe inserted into the first pipe, A body having a support jaw formed therein;
A stopper provided in the space portion and having an engagement portion for supporting ends of the first and second pipes, respectively;
A grip ring installed in the space portion so as to be positioned on both sides with the stopper interposed therebetween, the grip ring fixing each of the first and second pipes;
An o-ring installed in the space portion by being positioned on both sides of the stopper so as to be inserted into the first and second pipes; And
A nut portion that is fitted to the second pipe and is screwed to the body to push the O-ring and the stopper so that the O-rings each hold the airtightness of the first and second pipes by compression;
Wherein the adapter comprises: The method according to claim 1,
The body
A first engaging groove is formed on an inner surface of the space portion, a first stop ring is accommodated in the first engaging groove,
The stopper
Wherein the first stop ring is hollow and has a pair of bodies divided on both sides with respect to the first stop ring so as to surround the outer sides of the first and second pipes, A second latching groove is formed so as to catch the ring,
Wherein one or both of the first and second engaging grooves are formed in the first and second engaging grooves,
Wherein the first stop ring is movably provided within a limited range in the longitudinal direction of the body so that the range of movement of the stopper along the longitudinal direction is limited. The method according to claim 1,
Wherein the grip ring comprises:
A stopper provided on both sides of the stopper,
The O-
A plurality of grip rings each provided between the grip ring and the support jaw, and between the grip ring and the support,
Between the grip ring and the O-ring,
The tube is installed with a guard, a drinking adapter. The method according to any one of claims 1 to 3,
The body
Wherein an inclined pressing surface is formed at one end of the space portion so as to be inclined toward the supporting jaw side. The method according to any one of claims 1 to 3,
The stopper
And an inclined guide portion is formed so that the inner side surfaces of both sides are inclined toward the end. The method of claim 5,
Wherein the grip ring comprises:
A ring body positioned at an end of the stopper;
A plurality of first and second pipes which are spaced apart from each other along the inner circumferential surface of the ring body and are inclined toward the inclined guide portion to have a tension so as to prevent the first or second pipe Fixed government; And
And a reinforcement insertion portion formed to be bent from the outside of the ring body and inserted between the body and the stopper. The method of claim 6,
The stopper
And an insertion groove into which the reinforcing insertion portion is inserted is formed on the outer side of both sides. The method according to any one of claims 1 to 3,
The body
A third stop groove is formed around the outer side surface of the second stop ring, a second stop ring is received in the third stop groove,
The nut portion
Wherein when the body is inserted into the body, a latching jaw is formed so as to ride over the second stop ring, and the latching jaw is engaged with the second stop ring, thereby preventing separation of the body from the body. The method of claim 8,
Wherein the body and the nut portion are made of a metal,
The first and second screw engagement portions are formed so as to be screwed together,
And the first and second threaded engaging portions are spaced apart from each other when the engaging jaw is engaged with the second stop ring by moving the nut portion in a direction separating from the body. The method according to any one of claims 1 to 3,
The nut portion
Wherein the support is formed to separate the second pipe and the nut from a nut that is inserted into the body and screwed into the body. The method of claim 10,
The support portion
And a bushing that surrounds the second pipe, and is supported by a support groove formed inside the nut to face the O-ring.

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