WO2022065639A1 - Pvc pipe connecting device - Google Patents

Abstract

The present invention relates to a PVC pipe connecting device. Particularly, one embodiment of the present invention comprises: a connector having fastening grooves formed at both ends thereof; and socket units coupled to the fastening grooves to connect different PVC pipes, wherein the fastening groove includes: first fastening thread parts formed on the inner diametral surfaces of both ends of the connector; a fastening inclined part obliquely extended so that the inner diameter thereof is reduced in the coupling direction of the socket unit from the first fastening thread part; a second fastening thread part extended in the coupling direction of the socket unit from the fastening inclined part; and a loading part formed to have steps in the coupling direction of the socket unit from the second fastening thread part, and the socket unit can include: a snap ring inserted into the loading part; a fixing ring rotatably coupled to the second fastening thread part so that the snap ring comes into close contact with the loading part; a coupling nut rotatably coupled to the first fastening thread part; and an elastic member provided between the fixing ring and the coupling nut for watertightness between the connector and the socket unit.

Description

PVC pipe connector

The present invention relates to a PVC pipe connecting device.

In general, for the supply and drainage of water supply and drainage of tap water, small amount of sewage pipes, and other cities, PVC pipes made of synthetic resin materials such as PVC are widely used.

PVC piping is manufactured to a certain standard due to restrictions on transportation and handling. Since the length of PVC pipe is not infinite, when connecting different PVC pipes in the longitudinal direction or connecting them by bending, PVC adhesive is mainly used because it is inexpensive and can be easily installed.

However, when PVC adhesive is used, environmental problems may be caused due to the adhesive yarn, and harmful components of the adhesive may seriously damage the health of workers who use the adhesive. In addition, when constructing a pipe using PVC adhesive, if the PVC adhesive is incorrectly installed, it is difficult to correct it. Therefore, it is necessary to remove the installed part and re-construct the PVC pipe using the PVC adhesive. Also, if the PVC adhesive comes into contact with water in the PVC pipe, the PVC adhesive may change to a gel form by the water, or the PVC pipe may be clogged by the PVC adhesive.

(Patent Document 1) Patent Document: Domestic Registration Office No. 20-0413821 (Registered on Apr. 05, 2006)

Embodiments of the present invention are to provide a PVC pipe connecting device that can effectively connect between PVC pipes without the use of an adhesive.

According to one aspect of the present invention, there is provided a PVC pipe connecting device for connecting different PVC pipes, comprising: a connector having fastening grooves formed at both ends; and a socket unit coupled to the fastening groove so that an end of the PVC pipe can be assembled, wherein the fastening groove includes: first fastening screw threads formed on inner diameter surfaces of both ends of the connector; a fastening inclined portion extending obliquely from the first fastening screw thread portion to a narrow inner diameter in a coupling direction of the socket unit; a second fastening screw thread extending from the fastening slope in a coupling direction of the socket unit; and a seating portion formed to be stepped in a coupling direction of the socket unit in the second fastening screw thread portion, wherein the socket unit includes a snap ring inserted into the seating portion; a fixing ring rotatably coupled to the second fastening screw thread portion so that the snap ring is in close contact with the seating portion; a coupling nut rotatably coupled to the first fastening screw thread; and an elastic member provided between the fixing ring and the coupling nut for watertightness between the connector and the socket unit.

At this time, the snap ring is provided in a ring shape having an outer diameter corresponding to the inner diameter of the seating portion, and when pressed by the fixing ring, a snap ring portion that is in close contact with the seating portion; and a plurality of snap locking portions provided in this shape along the circumferential direction of the snap ring portion, the snap engaging portion protruding obliquely in a direction between a coupling direction of the socket unit and an inner diameter direction of the snap ring portion.

In addition, the fixing ring may include a fixing ring portion provided in a ring shape having an outer diameter corresponding to the inner diameter of the seating portion on the outer diameter surface; and a fixing screw portion formed on an outer diameter surface of the fixing ring portion and configured to attach the snap ring to the seating portion through rotational coupling with the second fastening screw thread portion.

In addition, the coupling nut includes a nut body; a nut screw portion formed on an outer diameter surface of the front end side of the nut body portion so as to be rotationally coupled to the first fastening screw portion; And it is formed to protrude stepwise in the outer diameter direction from the rear end-side outer surface of the nut ring, the outer diameter may include a nut engaging portion having at least a larger diameter than the end-side outer diameter of the connecting portion.

In addition, a plurality of fixing grooves capable of clipping of the fastening tool are formed in the fixing ring in the circumferential direction, and the first fastening screw thread part, the fastening inclined part, the second fastening screw thread part and the seating part, In order to understand the assembly of the socket unit with respect to the connector, it may have an inner diameter that decreases sequentially in the coupling direction of the socket unit.

In addition, the elastic member may include an elastic ring portion that is smaller than the inner diameter of the first fastening screw thread portion and provides an outer diameter larger than the inner diameter of the second fastening screw thread portion; and the fastening slope

It may include an elastically inclined portion formed to be inclined on the outer diameter of the elastic ring portion to correspond to the inner diameter of the surface.

In addition, the elastic member further includes an elastic locking portion protruding from the elastic inclined portion in an outer radial direction, and the fastening groove is fastened so that the elastic locking portion is drawn in when the elastic member is inserted into the fastening inclined portion. The inclined portion may further include a fastening groove formed in the form of a groove.

In addition, the elastic engaging portion is provided in a plurality of which are formed on the outer diameter surface of the elastic inclined portion in the insertion direction of the socket unit, wedge-shaped in the elastic inclined portion so that only one-way entry in the insertion direction of the socket unit is allowed. It protrudes, and the fastening groove portion may be formed in the shape of a plurality of wedge grooves formed in the insertion direction of the socket unit in the fastening inclined portion to correspond to the elastic locking portion.

In addition, according to the embodiments of the present invention, since the PVC pipe is defective in a movable fastening method, there is an effect that the height adjustment such as the gradient of the PVC pipe can be adjusted very simply.

In addition, according to the embodiments of the present invention, compared to the prior art, since the adhesive is not used when fastening the PVC pipe, there is an effect that the problem caused by the use of the adhesive can be solved.

In addition, according to the embodiments of the present invention, in a harsh environment of the field, even a beginner in the equipment industry can easily install the PVC pipe, and there is an effect that the PVC pipe can be easily connected even in a narrow space.

1 is an exploded perspective view showing a PVC pipe connecting device according to an embodiment of the present invention.

Figure 2 is a combined perspective view of a pipe coupled to the PVC pipe connecting device according to an embodiment of the present invention.

FIG. 3 is a cross-sectional view showing the line “A-A” of FIG. 2 by cutting it. FIG. 4 is an enlarged cross-sectional view of part "B" of FIG. 3 .

FIG. 5 is an enlarged cross-sectional view of part "B" of FIG. 3 according to another embodiment of the present invention.

Hereinafter, specific embodiments for implementing the spirit of the present invention will be described in detail with reference to the drawings.

In addition, in the description of the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

In addition, when it is mentioned that a component is 'connected', 'supported', 'connected', 'supplied', 'transferred', or 'contacted' to another component, it is directly connected, supported, connected, It is to be understood that there may be supply, delivery, and contact, but other components may exist in between.

The words used herein are used only to describe specific embodiments and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise.

In addition, in the present specification, the expressions of the upper side, the lower side, the side, etc. are described with reference to the drawings, and it is clarified in advance that if the direction of the corresponding object is changed, it may be expressed differently. For the same reason, some components are exaggerated, omitted, or schematically illustrated in the accompanying drawings, and the size of each component does not fully reflect the actual size.

In addition, words including ordinal numbers such as 1st, 2nd, etc. may be used to describe various components, but the components are not limited by these words. These words are only used as adversaries to distinguish one component from another.

The meaning of "comprising," as used herein, specifies a particular characteristic, region, integer, step, operation, element and/or component, and other specific characteristic, region, integer, step, operation, element, component and/or It does not exclude the presence or addition of groups.

Hereinafter, a detailed configuration of the PVC pipe connecting device according to the present invention will be described with reference to FIGS. 1 to 5 .

Figure 1 is an exploded perspective view showing a PVC pipe connecting device according to an embodiment of the present invention, Figure 2 is a combined perspective view of a pipe coupled to the PVC pipe connecting device according to an embodiment of the present invention, Figure 3 is 2 is a cross-sectional view showing a section “AA”, and FIG. 4 is an enlarged cross-sectional view of a section “B” of FIG. 3 .

1 to 4 , the PVC pipe connecting device 10 according to an embodiment of the present invention is coupled to the connector 100 having fastening grooves 110 formed at both ends thereof, and the fastening groove 110 . It may include a socket unit 200 that is.

The connector 100 may connect between different PVC pipes (P). To this end, fastening grooves 110 may be formed at both ends of the connector 100 . The fastening groove 110 may include a first fastening screw mountain part 111 , a fastening inclined part 112 , a second fastening screw thread part 113 , and a seating part 114 . Since the first fastening screw thread part 111, the fastening inclined part 112, the second fastening screw thread part 113 and the seating part 114 have inner diameters that are sequentially decreased in the coupling direction of the socket unit 200, , the socket unit 200 may be assembled to the connector 100 as follows.

In more detail, the first fastening screw thread portions 111 of the connector 100 may be positioned at both ends of the connector 100 . The first fastening screw thread portion 111 may be formed in the form of a screw thread along the circumferential direction at both ends of the inner diameter surface of the connector 100 . When the socket unit 200 is coupled, the coupling nut 230 of the socket unit 200 may be rotationally coupled to the first fastening screw thread portion 111 .

The fastening inclined part 112 may provide an inclined surface extending obliquely so that the inner diameter of the first fastening screw thread part 111 in the coupling direction of the socket unit 200 is narrowed. When the socket unit 200 is coupled, since the outer surface of the elastic member 240 is in close contact with the sliding movement of the fastening inclined portion 112, close watertightness can be achieved between the connector 100 and the socket unit 200. .

The second fastening screw thread portion 113 may be located at a point extending from the fastening inclined portion 112 in the coupling direction of the socket unit 200 . The second fastening screw thread portion 113 may be formed in the form of a screw thread along the circumferential direction on the inner diameter surfaces of both ends of the connector 100 . When the socket unit 200 is coupled, the fixing ring 220 of the socket unit 200 may be rotationally coupled to the second fastening screw thread portion 113 .

The seating part 114 may be located at a point extending from the second fastening screw thread part 113 in the coupling direction of the socket unit 200 . The seating part 114 may be formed to be stepped in the coupling direction of the socket unit 200 in the second fastening screw thread part 113 . As an example, the seating part 114 may include a first seating jaw part 114a, a second seating jaw part 114b, and a third seating jaw part 114c which are continuously disposed in the coupling direction of the socket unit 200 . there is.

Here, when the snap ring 210 of the socket unit 200 is coupled to the connector 100, the first seating jaw portion 114a may be provided in the form of a locking jaw in which the snap ring portion 211 of the snap ring 210 can be supported. there is. The second seating jaw portion 114b may be provided in the form of a stopping jaw having a smaller inner diameter than the first seating jaw portion 114a. When the snap ring 210 of the socket unit 200 is coupled to the connector 100 , the second seating jaw portion 114b may provide a space in which the snap engaging portion 212 of the snap ring 210 is positioned. The third seating portion 114 may be provided in the form of a locking jaw having an inner diameter smaller than that of the second seating jaw portion 114b. When the PVC pipe (P) is coupled to the third mounting part 114, the end of the PVC pipe (P) may be supported on the third mounting part 114.

The socket unit 200 may be coupled to the fastening groove 110 of the connector 100 for assembling between the ends of different PVC pipes (P). The socket unit 200 may include a snap ring 210 , a fixing ring 220 , a coupling nut 230 , and an elastic member 240 . At this time, the inner diameter of the snap ring 210, the fixing ring 220 and the coupling nut 230 may be manufactured to have the same diameter as the outer diameter of the PVC pipe (P).

More specifically, the snap ring 210 may be inserted into the seating portion 114 . When the PVC pipe (P) is inserted into the connector 100, the snap ring 210 pings the end of the PVC pipe (P), thereby improving the bonding force of the PVC pipe (P) to the connector (100). there is.

The snap ring 210 may include a snap ring portion 211 and a snap engaging portion 212 . The snap ring portion 211 may be provided in a ring shape having an outer diameter corresponding to the inner diameter of the seating portion 114 . For example, the snap ring part 211 may have an O-ring shape. When pressed by the fixing ring 220 , the snap ring part 211 may be in close contact with the seating part 114 .

And the snap engaging portion 212 is configured integrally with the snap ring portion 211, the snap ring portion 211 along the circumferential direction may be provided in plurality. The snap engaging part 212 is formed to protrude obliquely in a direction between the coupling direction of the socket unit 200 and the inner diameter direction of the snap ring part, so that when the PVC pipe (P) is inserted into the connector 100, the snap ring 210 is The end of the PVC pipe (P) can be pinged.

The fixing ring 220 may be rotationally coupled to the second fastening screw thread portion 113 such that the snap ring 210 is in close contact with the seating portion 114 of the connector 100 . The fixing ring 220 may be fixed so that the snap ring 210 is in close contact with the seating portion 114 of the connector 100 by pushing the snap ring 210 in the coupling direction of the socket unit 200 . The fixing ring 220 may include a fixing ring portion 221 made of a plastic material, a fixing screw portion 222 , and a fixing groove portion 223 .

The fixing ring portion 221 of the fixing ring 220 may be provided in a ring shape having an outer diameter corresponding to the inner diameter of the seating portion 114 on the outer diameter surface. A fixing screw portion 222 may be formed on the outer diameter surface of the fixing ring portion 221 . The fixing screw part 222 may be provided in the form of a screw thread on the outer diameter surface of the fixing ring part 221 . The fixing screw 222 may be rotatably coupled to the second fastening screw 113 to closely attach the snap ring 210 to the seating portion 114 .

And the fixing groove 223 may be provided in the shape of a plurality of (for example, four) grooves formed as follows in the circumferential direction of the fixing ring 220 . A fastening tool may be clipped to the plurality of fixing grooves 223 . For example, when the fastening tool is rotated in a state in which the fastening tool is clipped to the fixing groove 223, the fixing ring 220 is rotated by the rotation of the fastening tool, so the fixing screw 222 is the second fastening screw thread 113. ) can be rotationally coupled to

The coupling nut 230 may be rotationally coupled to the first fastening screw thread portion 111 of the connector 100 in order to attach the elastic member 240 to the fixing ring 220 . To this end, the coupling nut 230 may include a nut body portion 231 , a nut screw portion 232 , and a nut engaging portion 233 .

The nut body portion 231 of the coupling nut 230 may be provided in the form of a nut as a whole. The nut body part 231 may be formed in the form of a thread on the outer diameter surface of the front end side of the nut body part 231 . The nut screw part 232 may be rotationally coupled to the first fastening screw thread part 111 .

The nut locking part 233 may be formed to protrude stepwise in the outer diameter direction from the outer diameter surface of the rear end of the nut ring part. The outer diameter of the nut locking part 233 may have a diameter that is at least larger than the outer diameter of the end side of the connection part. The outer diameter surface of the nut locking part 233 may be formed to be bent so as to be gripped by the operator.

The elastic member 240 may be formed in the form of a conical ring inclined in the coupling direction of the socket unit 200 . The elastic member 240 may be provided between the fixing ring 220 and the coupling nut 230 for watertightness between the connector 100 and the socket unit 200 . The elastic member 240 may be made of a Teflon material having excellent heat resistance and durability. In particular, when the elastic member 240 is pressed by the coupling nut 230 in a state in which the PVC pipe (P) is inserted into the connector 100, the inner diameter surface of the elastic member 240 is that of the PVC pipe (P). It can be fixed in close contact with the outer surface.

The elastic member 240 may include an elastic ring portion 241 and an elastic inclined portion 242 . The elastic ring part 241 may provide an outer diameter smaller than the inner diameter of the first fastening screw thread part 111 and larger than the inner diameter of the second fastening screw thread part 113 . The elastic inclined part 242 may be formed to be inclined on the outer diameter of the elastic ring part 241 to correspond to the inner diameter of the fastening inclined part 112 .

Accordingly, when the elastic member 240 is inserted into the fastening inclined portion 112 , while the elastic member 240 is compressed, the watertight function of the connection portion with the fastening inclined portion 112 can be improved. In addition, the inner diameter of the elastic ring portion 241 may have an inner diameter that is at least smaller than the outer diameter of the PVC pipe (P). Through this, when the PVC pipe (P) is inserted into the connector 100, it is possible to improve the watertight function of the connection portion with the PVC pipe (P).

FIG. 5 is an enlarged cross-sectional view of part "B" of FIG. 3 according to another embodiment of the present invention.

Referring to FIG. 5 , according to another embodiment of the present invention, the elastic member 240 may include an elastic ring portion 241 , an elastically inclined portion 242 and an elastically engaging portion 244 , and a fastening groove ( 110 , a first fastening screw thread part 111 , a fastening inclined part 112 , a second fastening screw thread part 113 , a seating part 114 , and a fastening groove part 116 may be included.

In describing another embodiment of the present invention, as compared with the above-described embodiments, the elastic member 240 further includes an elastic engaging portion 244 , and the fastening groove 110 is a fastening groove portion 116 . There is a difference in that it further includes a bar, and this difference will be mainly described, and the same description and reference numerals refer to the above-described embodiments.

The elastic locking part 244 may have a protruding structure that is formed to protrude from the elastically inclined part 242 in an outer radial direction. For example, the elastic locking portion 244 may be formed in a wedge shape so that only one-way entry in the insertion direction of the socket unit 200 is allowed. The elastic engaging portion 244 may be provided in plurality in which the outer diameter surface of the elastically inclined portion 242 in the insertion direction of the socket unit 200 is formed.

The fastening groove part 116 may have a groove structure formed in the fastening inclined part 112 so that the elastic locking part 244 is drawn in when the elastic member 240 is inserted into the fastening inclined part 112 . For example, the fastening groove portion 116 may have a wedge groove shape corresponding to the wedge-shaped elastic engaging portion 244 . The fastening groove 116 may be formed in the insertion direction of the socket unit 200 in the fastening inclined part 112 of the connector 100 .

As such, when the elastic member 240 is inserted into the fastening inclined part 112, these elastic engaging parts 244 and the fastening groove 116 allow coupling only in the coupling direction of the socket unit 200, The elastic member 240 may be more closely coupled to the fastening inclined portion 112 .

Hereinafter, the operation and effect of the PVC pipe connecting device having the configuration as described above will be described.

In order to connect between different PVC pipes (P), first, the snap ring 210 of the socket unit 200 is inserted into the seating part 114 of the connector 100, and then, for fixing the snap ring 210 , the fixing ring 220 is continuously coupled to the second fastening screw thread portion 113 of the connector 100 . At this time, the fixing screw portion 222 of the fixing ring 220 is rotationally coupled along the second fastening screw thread portion 113, and by pressing the snap ring 210, the snap ring 210 can be strongly fixed to the connector 100. there is.

When the snap ring 210 is fixed to the connector 100 by the fixing ring 220 , the coupling nut 230 is connected in a state in which the elastic member 240 is inserted into the fastening inclined portion 112 of the connector 100 . The first rotation is coupled to the first fastening screw thread portion 111 of the sphere 100 . At this time, a certain interval is maintained between the elastic member 240 and the fixing ring 220 .

Then, the end of the PVC pipe (P) is inserted into the connector (100). When the end of the PVC pipe (P) is inserted into the connector 100, the coupling nut 230 is coupled to the first fastening screw thread portion 111 of the connector 100 by secondary rotation. At this time, the elastic member 240 may be fixed in close contact with the fixing ring 220 by the pressing of the coupling nut 230 , and the end-side outer surface of the PVC pipe (P) is in close contact with the inner diameter surface of the elastic member 240 . While being, the PVC pipe (P) can be strongly coupled to the connector (100).

Although the embodiments of the present invention have been described as specific embodiments, these are merely examples, and the present invention is not limited thereto, and should be construed as having the widest scope according to the basic idea disclosed in the present specification. A person skilled in the art may implement a pattern of a shape not specified by combining/substituting the disclosed embodiments, but this also does not depart from the scope of the present invention. In addition, those skilled in the art may change or modify the disclosed embodiments based on the present specification, and it is clear that such changes or modifications also fall within the scope of the present invention.

Claims (8)

In the PVC pipe connecting device for connecting between different PVC pipes, a connector having fastening grooves formed at both ends; and and a socket unit coupled to the fastening groove so that the end of the PVC pipe can be assembled; The fastening groove is first fastening screw threads formed on inner diameter surfaces of both ends of the connector; a fastening inclined part extending obliquely from the first fastening screw thread part to a narrow inner diameter in a coupling direction of the socket unit; a second fastening screw ridge extending from the fastening inclined part in a coupling direction of the socket unit; and and a seating portion formed to be stepped in the coupling direction of the socket unit in the second fastening screw thread portion, The socket unit, a snap ring inserted into the seating part; a fixing ring rotatably coupled to the second fastening screw thread portion so that the snap ring is in close contact with the seating portion; a coupling nut rotatably coupled to the first fastening screw thread; and For water-tightness between the connector and the socket unit, comprising an elastic member provided between the fixing ring and the coupling nut, PVC pipe connectors. The method of claim 1, The snap ring is provided in a ring shape having an outer diameter corresponding to the inner diameter of the seating portion, and when pressed by the fixing ring, a snap ring portion that is in close contact with the seating portion; and It is provided in a plurality of this shape along the circumferential direction of the snap ring part, comprising a snap engaging part which is formed to protrude obliquely in a direction between the coupling direction of the socket unit and the inner diameter direction of the snap ring part, PVC pipe connectors. 3. The method of claim 2, The fixing ring is a fixing ring portion provided in a ring shape having an outer diameter corresponding to the inner diameter of the seating portion on the outer diameter surface; and It is formed on the outer diameter surface of the fixing ring portion, and includes a fixing screw portion for attaching the snap ring to the seating portion through rotational coupling with the second fastening screw thread portion, PVC pipe connectors. 4. The method of claim 3, The coupling nut is Nut body part; a nut screw portion formed on an outer diameter surface of the front end side of the nut body portion so as to be rotationally coupled to the first fastening screw portion; and It is formed to protrude stepwise from the outer diameter surface of the rear end side of the nut ring in the outer diameter direction, and the outer diameter includes a nut engaging portion having at least a larger diameter than the outer diameter of the end side of the connecting portion, PVC pipe connectors. 5. The method of claim 4, A plurality of fixing grooves capable of clipping of the fastening tool are formed in the fixing ring in the circumferential direction, The first fastening screw thread part, the fastening inclined part, the second fastening screw thread part and the seating part have inner diameters that are sequentially smaller in the coupling direction of the socket unit so that the assembly of the socket unit with respect to the connector is understood. PVC pipe connectors. 5. The method of claim 4, The elastic member, an elastic ring portion providing an outer diameter smaller than the inner diameter of the first fastening screw thread portion and larger than the inner diameter of the second fastening screw thread portion; and Comprising an elastic inclined portion formed to be inclined on the outer diameter of the elastic ring portion so as to correspond to the inner diameter of the fastening inclined portion, PVC pipe connectors. 7. The method of claim 6, The elastic member, Further comprising an elastic locking portion formed to protrude in the outer radial direction from the elastic inclined portion, The fastening groove is When the elastic member is inserted into the fastening inclined portion, further comprising a fastening groove portion formed in the form of a groove in the fastening inclined portion so that the elastic engaging portion is introduced, PVC pipe connectors. 8. The method of claim 7, The elastic locking part is provided with a plurality of which are formed on the outer diameter surface of the elastically inclined part in the insertion direction of the socket unit, and protrudes in a wedge shape from the elastically inclined part so that only one-way entry is allowed in the insertion direction of the socket unit, The fastening groove portion, Formed in the shape of a plurality of wedge grooves formed in the insertion direction of the socket unit in the fastening inclined portion to correspond to the elastic engaging portion, PVC pipe connectors.

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