One-touch-type connector for pipe for water supply or sewage

Abstract

Disclosed is a one-touch-type connector for a pipe for water supply or sewage. The one-touch-type connector for a pipe for water supply or sewage connects two pipes for water supply or sewage to each

Description

[Technical Field] [1] The present invention relates to a one-touch-type connector for a water supply and sewage pipe, and more specifically, to a one-touch-type connector for a water supply and sewage pipe, which easily fastens pipes without a tool when the pipes are buried underground or connected in an external environment. [Background Art] [2] The matters described in the Background Art are written to enhance understanding of the background of the present invention, and may include matters other than the related art that are already known to those of ordinary skill in the art to which the technology belongs. [3] In general, in living infrastructure such as houses and roads, piping construction for underground laying water supply pipes for drinking water supply and sewage pipes for sewage treatment is carried out to supply necessary contents or discharge unnecessary contents. [4] Until now, as for the types of pipes used to build the infrastructure of water supply and sewage facilities in Korea, steel pipes have been mainly used for water supply and reinforced concrete pipes (hume pipes) have been mainly used for sewage. However, as the lifespan of the already constructed facilities increases, in the case of steel pipes, contamination of water quality due to corrosion, and contamination and leakage due to rust inhibitors coated on an inner diameter of the steel pipes are pointed out as problems, and in the case of reinforced concrete pipes, there are disadvantages such as corrosion caused by hydrogen sulfide contained in sewage and the influence of acid, alkali, wastewater, salt, and organic substances. [6] Water supply and sewage polyethylene pipes (hereinafter, referred to as PE pipes) are resistant to stray-current corrosion and chemical corrosion, and do not form scaling, thereby providing excellent physical properties as pipes. [7] Furthermore, the water supply and sewage PE pipes are harmless, have excellent physical and chemical properties such as acid resistance and alkali resistance, and have a long lifespan of 50 years or longer, so that the water supply and sewage PE pipes are used as plumbing pipes and buried pipes in many fields today. [8] In addition, in a process in which the water supply and sewage PE pipes are cut to a length of about 6 m and and buried underground due to the characteristics of the water supply and sewage PE pipes, a connector (connection socket) is used at a connection portion of the water supply and sewage PE pipes to prevent the fluid or gas transferred inside the water supply and sewage PE pipes from leaking through a gap of the connection portion. The water supply and sewage PE pipes have the advantages of being lightweight, easy to handle, and available in a variety of sizes for various uses, but have disadvantages of not being widely used due to defects such as deformation of the molded shape after being buried underground under internal pressure or partial breakage due to brittleness under pressure.

[10] FIG. 1 is a longitudinal cross-sectional view of a conventional connector for a water supply and sewage pipe.

[11] Referring to FIG. 1, a conventional connector 10 for a water supply and sewage pipe is configured such that water supply and sewage pipes 1 are inserted into both sides of a body 11, respectively, so that the water supply and sewage pipes 1 are connected to each other, a sealing part 13 and a tightening part 14 are inserted into an inner surface of a cap fastening part 12 of the body 11, and a cap 15 is rotatably fastened to an outer surface of the cap fastening part 12.

[12] Since the cap 15 is configured to be fastened to the outer surface of the cap fastening part 12 in a screw-type fastening structure, the fastening part 14 is compressed by tightening or loosening the cap 15 while rotating the cap 15 clockwise or counterclockwise, thereby blocking a gap between the connector 10 and the water supply and sewage pipe 1 so that a fluid flowing inside the water supply and sewage pipes 1 are prevented from being leaked.

[13] However, the conventional connector for a water supply and sewage pipe has a problem in that it is difficult and time-consuming to connect and separate the water supply and sewage pipe. In addition, the water supply and sewage PE pipe is shaken according to a change in pressure of the fluid transferred from the inside thereof or receives an impact from the outside, so that the water supply and sewage PE pipe is removed from the connector (connection socket) without being not tightly compressed, thereby resulting in a problem in that the fluid transferred from the inside of the water supply and sewage pipe leaks through a joint part. [Disclosure] [Technical Problem]

[14] An object of the present invention is to provide a one-touch-type connector for a water supply and sewage pipe, which easily fastens pipes without a tool in a one-touch type (push-fit connection type) when the pipes are buried underground or connected in an external environment.

[15] Another object of the present invention is to provide a one-touch-type connector for a water supply and sewage pipe, in which the water supply and sewage pipe may be firmly installed without being randomly separated (removed) by a hook cap and a collet when a main cap is randomly separated due to an external impact after construction of the pipe.

[16] Still another object of the present invention is to provide a one-touch-type connector for a water supply and sewage pipe, which allows easy attachment and detachment of the water supply and sewage pipe by simply rotating the same by 90°. [Technical Solution] A one-touch-type connector for a water supply and sewage pipe according to one embodiment of the present invention, which connects two water supply and sewage pipes to each other and is configured to prevent leakage of a fluid flowing inside the water supply and sewage pipes, includes: a connector body provided at one side and the other side thereof with fastening parts, respectively, in which the fastening part has an opening into which the water supply and sewage pipe is inserted, and is formed in an inner circumferential surface thereof with hook cap coupling grooves; a hook cap inserted into the opening, and having a plurality of elastic hooks configured to allow the hook cap to be elastically inserted into the hook cap coupling groove and coupled to the fastening part, wherein one side of the elastic hook is formed to have a round shape so that the elastic hook is released from the hook cap coupling groove when the elastic hook is rotated to one side by a user in a state where the elastic hook is inserted into the hook cap coupling groove; an annular collet coupled into the hook cap and having a plurality of clip parts that are elastically compressed against an outer circumferential surface of the water supply and sewage pipe to fix the water supply and sewage pipe, in which the clip part is provided at a lower end thereof with a locking protrusion; and a main cap positioned to surround the fastening part, formed in a center thereof with a pipe through-hole through which the water supply and sewage pipe passes, and having an inner circumferential surface configured to be coupled to or decoupled from the connector body.

[18] In this case, a support jaw for supporting an end part of the main cap may protrude from an outer circumferential surface of the fastening part.

[19] In addition, one side of the hook cap may be knurled, and when a knurled portion is rotated, a portion having a round shape of the elastic hook may be released in a state where the portion having the round shape of the elastic hook is inserted into the hook cap coupling groove.

[20] In addition, the elastic hook of the hook cap may be inclined inward.

[21] In addition, four hook cap coupling grooves and four elastic hooks may be formed at intervals of 90°, in which the elastic hooks may be simultaneously released from the hook cap coupling grooves when the elastic hooks are rotated to one side in a state in which the elastic hooks are inserted into the hook cap coupling grooves, respectively.

[22] In addition, when an end part of the water supply and sewage pipe is inserted into the collet, the clip part may be elastically compressed against the outer circumferential surface of the water supply and sewage pipe to fix a position of the water supply and sewage pipe.

[23] In addition, an upper end of the main cap may have a circular groove formed around the pipe through-hole, and a foreign substance prevention ring may be inserted into the circular groove. [Advantageous Effects]

[24] According to the present invention, the pipes are easily fastened without a tool in a one-touch type (push-fit connection type) when the pipes are buried underground or connected in an external environment.

[25] According to the present invention, the water supply and sewage pipe may be firmly installed without being randomly separated (removed) by the hook cap and the collet when the main cap is randomly separated due to an external impact after construction of the pipe.

[26] According to the present invention, the water supply and sewage pipe is easily attached and detached by simply rotating the same by 90°. [Description of Drawings]

[27] FIG. 1 is a longitudinal cross-sectional view of a conventional connector for a water supply and sewage pipe.

[28] FIG. 2 is a perspective view of a one-touch-type connector for a water supply and sewage pipe according to one embodiment of the present invention.

[29] FIG. 3 is a front view of the one-touch-type connector for a water supply and sewage pipe according to one embodiment of the present invention.

[30] FIG. 4 is a rear view of the one-touch-type connector for a water supply and sewage pipe according to one embodiment of the present invention.

[31] FIG. 5 is a side view of a one-touch-type connector for a water supply and sewage pipe according to one embodiment of the present invention. FIG. 6 is an exploded perspective view of the one-touch-type connector for a water supply and sewage pipe according to one embodiment of the present invention.

[33] FIG. 7 is a front view when the one-touch-type connector for a water supply and sewage pipe according to one embodiment of the present invention is erected.

[34] FIG. 8 is a longitudinal cross-sectional view showing a state where a hook cap and a collet are coupled to a connector body and a main cap is fastened to the connector body, in the one-touch-type connector for a water supply and sewage pipe according to one embodiment of the present invention.

[35] FIG. 9 is a front view showing a state where the water supply and sewage pipe is coupled to the one-touch-type connector for a water supply and sewage pipe according to one embodiment of the present invention.

[36] FIG. 10 is a front view showing a state where the main cap is lifted up in order to separate the water supply and sewage pipe from the one-touch-type connector for a water supply and sewage pipe according to one embodiment of the present invention.

[37] FIG. 11 is a front view showing a state where the water supply and sewage pipe is lifted up in order to separate the water supply and sewage pipe from the one-touch-type connector for a water supply and sewage pipe according to one embodiment of the present invention. FIG. 12 is a front view showing a state where the main cap is separated from the one-touch-type connector for a water supply and sewage pipe according to one embodiment of the present invention.

[39] FIG. 13 is a perspective view of the hook cap of the one-touch-type connector for a water supply and sewage pipe according to one embodiment of the present invention. [Mode for Invention]

[40] The advantages and features of the present invention and a method of achieving the advantages and features will become more apparent from the embodiments described below in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments described below, but will be implemented in various different forms. The embodiments are provided merely to complete the disclosure of the present invention and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims.

[41] FIG. 2 is a perspective view of a one-touch-type connector for a water supply and sewage pipe according to one embodiment of the present invention. FIG. 3 is a front view of the one-touch-type connector for a water supply and sewage pipe according to one embodiment of the present invention. FIG. 4 is a rear view of the one-touch-type connector for a water supply and sewage pipe according to one embodiment of the present invention. FIG. 5 is a side view of a one-touch-type connector for a water supply and sewage pipe according to one embodiment of the present invention. FIG. 6 is an exploded perspective view of the one-touch-type connector for a water supply and sewage pipe according to one embodiment of the present invention. FIG. 7 is a front view when the one-touch-type connector for a water supply and sewage pipe according to one embodiment of the present invention is erected. FIG. 8 is a longitudinal cross-sectional view showing a state where a hook cap and a collet are coupled to a connector body and a main cap is fastened to the connector body, in the one-touch-type connector for a water supply and sewage pipe according to one embodiment of the present invention. FIG. 9 is a. front view showing a state where the water supply and sewage pipe is coupled to the one-touch-type connector for a water supply and sewage pipe according to one embodiment of the present invention. FIG. 10 is a front view showing a state where the main cap is lifted up in order to separate the water supply and sewage pipe from the one-touch-type connector for a water supply and sewage pipe according to one embodiment of the present invention. FIG. 11 is a front view showing a state where the water supply and sewage pipe is lifted up in order to separate the water supply and sewage pipe from the one-touch-type connector for a water supply and sewage pipe according to one embodiment of the present invention. FIG. 12 is a front view showing a state where the main cap is separated from the one-touch-type connector for a water supply and sewage pipe according to one embodiment of the present invention. FIG. 13 is a perspective view of the hook cap of the one-touch-type connector for a water supply and sewage pipe according to one embodiment of the present invention.

[42] A one-touch-type connector 100 for a water supply and sewage pipe according to one embodiment of the present invention is a pipe connection device that connects two water supply and sewage pipes 1 to each other and is configured to prevent leakage of a fluid flowing into the water supply and sewage pipes 1. The present invention is not limited to the water supply and sewage pipe 1, and may be equally applied to pipes used in buildings.

[43] Hereinafter, components of the one-touch-type connector 100 for a water supply and sewage pipe according to one embodiment of the present invention will be described in detail.

[44] The one-touch-type connector 100 for a water supply and sewage pipe 100 includes a connector body 110, a hook cap 120, a collet 130, and a main cap 140.

[45] The connector body 110 is provided at one side and the other side thereof with fastening parts 111, respectively, in which the fastening part 111 has an opening O into which the water supply and sewage pipe 1 is inserted. That is, the connector body 110 has a structure in which both sides thereof are open. A hook cap coupling groove 113 is formed on an inner circumferential surface (inner wall) of the fastening part 111, and a support jaw 119 for supporting an end part of the main cap 140 protrudes from an outer circumferential surface of the fastening part 111. Wien the main cap 140 is coupled (assembled) to the fastening part 111, the main cap 140 is prevented from sagging downward by the support jaw 119.

[46] The hook cap 120 has an annular shape and is inserted into the opening O. The hook cap 120 has a plurality of eiastic hooks 121 such that the hook cap 120 may be elastically inserted into the hook cap coupling groove 113 and coupled to the fastening part 111. The elastic hook 121 of the hook cap 120 is inclined inward. One side of the hook cap 120 is knurled, and when a knurled portion 122 is rotated by a user’s operation, a portion having a round shape of the elastic hook 121 is released in a state where the portion having the round shape of the elastic hook 121 is inserted into the hook cap coupling groove 113.

[48] The collet (clip) 130 has an annular shape and is coupled into the hook cap 120. The collet 130 has a plurality of clip parts 131 that are elastically compressed against an outer circumferential surface of the water supply and sewage pipe 1 to fix the water supply and sewage pipe 1.

[49] When an end part of the water supply and sewage pipe 1 is inserted into the collet 130 in order to couple the water supply and sewage pipe 1 to the connector 100 for a water supply and sewage pipe, the clip part 131 is elastically compressed against the outer circumferential surface of the water supply and sewage pipe 1 to fix a position of the water supply and sewage pipe 1, and the clip part 131 is elastically compressed against the outer circumferential surface of the water supply and sewage pipe 1 to fix the position of the water supply and sewage pipe 1.

[50] As described above, when the collet 130 stably fixes the water supply and sewage pipe 1, the collet 130 maintains a slightly moved state above the hook cap 120.

[51] An O-ring 240 is inserted between the hook cap 120 and the fastening part 111 to prevent leakage from the water supply and sewage pipe 1. An insert ring 230 is inserted between the O-ring 240 and the hook cap 120 to prevent the O-ring from being separated from the fastening part 111 and prevent the deformation of the O-ring 240.

[53] The main cap 140 is positioned to surround the fastening part 111. The main cap 140 is formed in the center thereof with a pipe through-hole 141 through which the water supply and sewage pipe 1 passes, and has an inner circumferential surface that may be coupled to and decoupled from the connector body 110.

[54] An upper end of the main cap 140 has a circular groove formed around the pipe through-hole 141, and a foreign substance prevention ring 144 is inserted into the circular groove. Since the foreign substance prevention ring 144 is in close contact with the outer circumferential surface of the water supply and sewage pipe 1 to remove contaminants adhered to the outer circumferential surface, the contaminants are not introduced into the connector 100 for a water supply and sewage pipe, and thus it is possible to quickly install the water supply and sewage pipe 1 in an environment exposed to the contaminants and to effectively prevent the water supply and sewage pipe 1 from being clogged by the contaminants.

[55] As described above, the features of the one-touch-type connector 100 for a water supply and sewage pipe according to one embodiment of the present invention will be described as follows.

[56] The one-touch-type connector 100 for a water supply and sewage pipe according to one embodiment of the present invention is a connector for a pipe, which is buried underground or used in an external environment, and may reduce a working time by using a push-fit connection type (one-touch structure) unlike a conventional screw method which takes a tot of time.

[57] In addition, the one-touch-type connector 100 for a water supply and sewage pipe according to one embodiment of the present invention has a structure in which the main cap 140 primarily fixes the water supply and sewage pipe 1. and the hook cap 120 and the collet 130 fix the water supply and sewage pipe 1 again. When the main cap 140 is randomly separated due to an external impact after the construction of the water supply and sewage pipe 1, the hook cap 120 and the collet 130 may be configured as a double locking structure that prevents the water supply and sewage pipe 1 from falling out (being separated).

[58] In addition, in the one-touch-type connector 100 for a water supply and sewage pipe according to one embodiment of the present invention, it is easy to couple the main cap 140 to the water supply and sewage pipe 1 in a one-touch manner as shown in FIG. 10.

[59] That is, in a case where the water supply and sewage pipe 1 is coupled (fastened) into the connector 100 for a pipe, as shown in FIG. 9, when the water supply and sewage pipe 1 is inserted into the pipe through-hole 141, the clip part 131 is elastically compressed against the outer circumferential surface of the water supply and sewage pipe 1 to fix the position of the water supply and sewage pipe 1 when an end part 1a of the water supply and sewage pipe 1 is inserted into the collet 130. In addition, in the one-touch-type connector 100 for a water supply and sewage pipe according to one embodiment of the present invention, when the water supply and sewage pipe 1 is separated (removed) from the connector 100, the main cap 140 is rotated counterclockwise by 90° as shown in FIG. 10, and the main cap 140 is lifted upward and separated as shown in FIG. 11. In addition, as the collet 130 is pressed with a finger, the clip part 131 is pushed rearward by a clearance D to be spaced apart from the outer circumferential surface of the water supply and sewage pipe 1, so that the water supply and sewage pipe 1 may be easily separated from the connector 100 for a water supply and sewage pipe.

[61] In addition, the one-touch-type connector 100 for a water supply and sewage pipe according to one embodiment of the present invention has the hook cap coupling groove 113 for preventing the separation of the hook cap 120.

[62] In addition, in the one-touch-type connector 100 for a water supply and sewage pipe according to one embodiment of the present invention, a contaminant removal ring (soft plastic or rubber) 143 is in close contact with the outer circumferential surface of the water supply and sewage pipe 1 to remove the contaminants adhered to the outer circumferential surface. Accordingly, since the contaminants are not introduced into the connector 100 for a water supply and sewage pipe, it is possible to quickly install the connector 100 even in an environment exposed to the contaminants and to prevent the water supply and sewage pipe 1 from being clogged by the contaminants. In addition, it is possible to protect internal components of the connector 100 and reduce a rework rate due to the minimization of exposure to the contaminants when the water supply and sewage pipe is fastened.

[63] The embodiments of the present invention described above have been described with reference to the embodiments shown in the drawings for better understanding, but this is merely an example, and those skilled in the art will understand that various modifications and other equivalent embodiments are possible therefrom. Therefore, the true technical scope to be protected by the present invention should be determined by the technical idea of the appended claims.

[64]

[65] [Description of Reference Numerals]

[66] 110: connector body 111: fastening part

[67] 113: hook cap coupling groove 119: support jaw

[68] 120: hook cap 121: elastic hook

[69] 122: knurled portion 130: collet

[70] 131: clip part 140: main cap

[71] 141: pipe through-hole 144: foreign substance prevention ring

[72] 230: insert ring 240: O-ring 100: connector for water suppiy and sewage pipe

Claims

1. A one-touch-type connector for a water supply and sewage pipe, which connects two water supply and sewage pipes to each other and is configured to prevent leakage of a fluid flowing inside the water supply and sewage pipes, the one-touch-type connector comprising:a connector body provided at one side and the other side thereof with fastening parts, respectively, in which the fastening part has an opening into which the water supply and sewage pipe is inserted, and is formed in an inner circumferential surface thereof with hook cap coupling grooves;a hook cap inserted into the opening, and having a plurality of elastic hooks configured to allow the hook cap to be elastically inserted into the hook cap coupling groove and coupled to the fastening part, wherein one side of the elastic hook is formed to have a round shape so that the elastic hook is released from the hook cap coupling groove when the elastic hook is rotated to one side by a user in a state where the elastic hook is inserted into the hook cap coupling groove;an annular collet coupled into the hook cap and having a plurality of clip parts that are elastically compressed against an outer circumferential surface of the water supply and sewage pipe to fix the water supply and sewage pipe, in which the clip part is provided at a lower end thereof with a locking protrusion; anda main cap positioned to surround the fastening part, formed in a center thereof with a pipe through-hole through which the water supply and sewage pipe passes, and having an inner circumferential surface configured to be coupled to or decoupled from the connector body.The one-touch-type connector of claim 1, wherein a support jaw for supporting an end part of the main cap protrudes from an outer circumferential surface of the fastening part.

3. The one-touch-type connector of claim 1, wherein one side of the hook cap is knurled, and when a knurled portion is rotated, a portion having a round shape of the elastic hook is released in a state where the portion having the round shape of the elastic hook is inserted into the hook cap coupling groove.

4. The one-touch-type connector of claim 1, wherein the elastic hook of the hook cap is inclined inward.

5. The one-touch-type connector of claim 1, wherein four hook cap coupling grooves and four elastic hooks are formed at intervals of 90°, in which the elastic hooks are simultaneously released from the hook cap coupling grooves when the elastic hooks are rotated to one side in a state in which the elastic hooks are inserted into the hook cap coupling grooves, respectively.

6. The one-touch-type connector of claim 1, wherein, when an end part of the water supply and sewage pipe is inserted into the collet, the clip part is elastically compressed against the outer circumferential surface of the water supply and sewage pipe to fix a position of the water supply and sewage pipe.

7. The one-touch-type connector of claim 1, wherein an upper end of the main cap has a circular groove formed around the pipe through-hole, and a foreign substance prevention ring is inserted into the circular groove.INTERNATIONAL SEARCH REPORT International application No. PCT / KR2024 / 020958A. CLASSIFICATION OF SUBJECT MATTER F16L 37 / 091(2006.01)i; F16L 19 / 07(2006.01)i; F16L 21 / 08(2006.01)i; F16L 21 / 02(2006.01)i; F16L 25 / 12(2006.01)i According to International Patent Classification (IPC) or to both national classification and IPC B. FIELDS SEARCHED Minimum documentation searched (classification system followed by classification symbols) F16L 37 / 091(2006.01); F16L 17 / 02(2006.01); F16L 19 / 08(2006.01); F16L 21 / 06(2006.01); F16L 37 / 092(2006.01); F16L 37 / 12(2006.01); F16L 55 / 00(2006.01) Documentation searched other than minimum documentation to the extent that such documents are included in the fields searched Korean utility models and applications for utility models: IPC as above Japanese utility models and applications for utility models: IPC as above Electronic data base consulted during the international search (name of data base and, where practicable, search terms used) eKOMPASS (KIPO internal) &keywords: 21 ((coupling device), E] *] E} (one-touch type), fl (hook cap), 11¾ (collet), (main cap) C. DOCUMENTS CONSIDERED TO BE RELEVANT Category* Citation of document, with indication, where appropriate, of the relevant passages Relevant to claim No. Y A Y A KR 10-2005-0023989 A (SANG-A PNEUMATIC CO., LTD.) 10 March 2005 (2005-03-10) See paragraphs [0067]-[0109] and figures 7-9, 15 and 16. JP 5452947 B2 (BRIDGESTONE CORP.) 26 March 2014 (2014-03-26) See paragraphs [0001], [0002], [0014] and [0015] and figures 1-5. JP 2010-065716 A (CK METALS CO , LTD.) 25 March 2010 (2010-03-25) See paragraphs [0012]-[0015] and figures 1-3. 1-6 7 1-6 1-7 A KR 10-2224063 Bl (WAPION) 08 March 2021 (2021-03-08) See claim 1 and figure 4. 1-7 A KR 10-2023-0()97667 A (MCM CO., LTD.) 03 July 2023 (2023-07-03) See claim 1 and figure 2. 1-7 | | Further documents are listed in the continuation of Box C. | J | See patent family annex. * Special categories of cited documents: "A" document defining the general state of the art which is not considered to be of particular relevance “D” document cited by the applicant in the international application ,4E” earlier application or patent but published on or after the international filing date •4L” document which may throw doubts on priority claim(s) or which is cited to establish the publication date of another citation or other special reason (as specified) “O” document referring to an oral disclosure, use, exhibition or other means “P” document published prior to the international filing date but later than the priority date claimed “T” later document published after the international filing date or priority date and not in conflict with the application but cited to understand the principle or theory underlying the invention “X” document of particular' relevance; the claimed invention cannot be considered novel or cannot be considered to involve an inventive step when the document is taken alone “Y” document of particular relevance; the claimed invention cannot be considered to involve an inventive step when the document is combined with one or more other such documents, such combination being obvious to a person skilled in the art document member of the same patent family Date of the actual completion of the international search 27 March 2025 Date of mailing of the international search report 27 March 2025 Name and mailing address of the ISA / KR Korean Intellectual Property Office Government Complex-Daejeon Building 4,189 Cheongsa-ro, Seo-gu, Daejeon 35208 Facsimile No. +82-42-481-8578 Authorized officer Telephone No.

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