KR20170033150A - One touch fitting adapter - Google Patents

One touch fitting adapter Download PDF

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Publication number
KR20170033150A
KR20170033150A KR1020150131116A KR20150131116A KR20170033150A KR 20170033150 A KR20170033150 A KR 20170033150A KR 1020150131116 A KR1020150131116 A KR 1020150131116A KR 20150131116 A KR20150131116 A KR 20150131116A KR 20170033150 A KR20170033150 A KR 20170033150A
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KR
South Korea
Prior art keywords
ring
socket
nut
bolt
nipple
Prior art date
Application number
KR1020150131116A
Other languages
Korean (ko)
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KR101771314B1 (en
Inventor
김종운
Original Assignee
(주) 디엠테크
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by (주) 디엠테크 filed Critical (주) 디엠테크
Priority to KR1020150131116A priority Critical patent/KR101771314B1/en
Publication of KR20170033150A publication Critical patent/KR20170033150A/en
Application granted granted Critical
Publication of KR101771314B1 publication Critical patent/KR101771314B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L17/00—Joints with packing adapted to sealing by fluid pressure
    • F16L17/02—Joints with packing adapted to sealing by fluid pressure with sealing rings arranged between outer surface of pipe and inner surface of sleeve or socket
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
    • F16L33/20—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
    • F16L37/084—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
    • F16L37/088—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of a split elastic ring

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Joints Allowing Movement (AREA)
  • Joints With Pressure Members (AREA)

Abstract

The present invention provides a one-touch fitting adapter comprising: a straight nipple (110) having a through-hole (111) formed in a central part; a socket support ring (160) connected to the middle part of the outside of the nipple (110); a socket (120) inserted into the socket support ring (160); and a nut-type bolt (130) integrally connecting a hexagonal nut part (131) and a bolt part (132) to allow the nipple (110) connected to the socket (120) to be inserted. According to the present invention, the nipple and the nut-type bolt are strongly connected via a sealing, and tightness is maintained by an O-ring inserted into the inner circumferential surface of the bolt part of the nut-type bolt and an O-ring insertion groove formed at the end of the nipple.

Description

One-touch Fitting Adapter {ONE TOUCH FITTING ADAPTER}

The present invention relates to a one-touch fitting adapter, and more particularly to a one-touch fitting adapter which is firmly connected to a nipple and a nut bolt via a shearing ring, and which has an O-ring inserted into an inner circumferential surface of a bolt portion of a nut- Fitting adapter for allowing airtightness to be maintained.

As disclosed in Korean Utility Model Registration No. 20-0336038, a conventional hose connector 1 will be described with reference to FIGS. 13 to 17 attached hereto.

13, the conventional hose connector 1 has a nut 15 which is rotatable on the outside of the nipple 6 and a hexagonal head 11 is integrally formed in the middle portion of the nipple 6 And the socket 2 is fixedly mounted on the inner side of the nipple 6.

The socket 2 has a plurality of contact protrusions 3 protruding from an inner diameter of one side and a mounting portion 4 having a smaller diameter than the diameter of the portion where the contact protrusions 3 are formed.

The nipple 6 has a non-slip protrusion 8 formed on one side of its outer diameter so as to be inserted into the inner diameter of the hose 60 so as not to be pushed out. A hexagonal head 11 is integrally formed in the middle portion, (10) is formed between the socket mounting recess (9) and the non-slip projection (8), and the socket mounting recess (9) and the nut mounting recess A nut mounting portion 13 is formed at one side of the mounting groove 12 and an outer edge of the nipple 6 forms an inclined surface 14 and a flow hole 7 is formed through the center.

The nut (15) has a female screw (16) at its outer side and a mounting portion (17) at its inner side.

The socket 2 is inserted into the socket mounting groove 9 of the nipple 6 so that the mounting portion 4 is inserted into the socket mounting groove 9 so that the outer diameter of the mounting portion 4 can be adjusted by using hydraulic equipment The pressing portion 5 is formed so that the mounting portion 4 is plastically deformed so as to be in close contact with the socket mounting outer diameter 10 of the nipple 6 and the socket mounting groove 9 as shown in Figures 3 and 4 .

The nut 15 is inserted into the nut mounting groove 12 of the nipple 6 so that the mounting portion 17 is inserted into the nut mounting groove 12 and the outer diameter of the mounting portion 17 is adjusted by using hydraulic equipment The pressing portion 18 is formed so that the mounting portion 17 is plastically deformed so as not to be detached from the nut mounting groove 12 of the nipple 6 as shown in Figs. 15 and 17, 17 and the outer diameter of the nut mounting groove 12 so that the nut 15 can freely rotate.

The conventional hose connector 1 configured as above has the following problems.

In the nipple 6, the hexagonal head 11 is necessary for connection with other equipment. The hexagonal head 11 is held by a tool such as a wrench so that the hose coupling 1 itself is not rotated, and the nut 15 is fastened to the port of the hydraulic equipment In forming the hexagonal head in the nipple 6, the hexagonal steel corresponding to the outer contour of the hexagonal head 11 is used as the raw material to perform the cutting. This results in a large amount of cutting work, There is a problem that it takes a lot of time to manufacture.

Particularly, since hexagonal steel raw material is mounted on a special large lathe, it is cut while rotating to form mounting grooves and projections on the left and right sides, and drilling is performed to form a flow hole in the center, There was a rising end.

Further, when the nut 15 is fastened to the nipple 6, the mounting portion 1 is forcibly pressed to cause plastic deformation so as not to be arbitrarily separated and separated, so that the metal structure is deformed, cracks are generated, and these cracks continue to expand when the high-pressure fluid is passed therethrough, thereby causing a fatal defect in which the nut 15 itself is damaged.

The coupling structure of the socket 2 and the nipple 6 also has a problem in that the socket 2 and the nipple 6 are detached and separated due to the weak binding force since the mounting portion 4 of the socket 2 is forcibly press- Frequent occurrence.

The present invention has been made in order to meet the above-described needs of the prior art, and it is an object of the present invention to provide a nipple and a nut bolt which are firmly connected to each other via a shearing, And a hermetic seal is maintained by an O-ring.

The one-touch fitting adapter according to the first embodiment of the present invention comprises: a nipple 110 formed in a straight shape having a flow hole 111 at a central portion thereof; A socket 120 connected to the outside of the nipple 110; And a nut bolt 130 integrally connected to the hexagonal nut 131 and the bolt 132 so as to fit the nipple 110 with the socket 120 connected thereto.

The one-touch fitting adapter according to the second embodiment of the present invention comprises: a nipple 110 formed in a straight shape having a flow hole 111 at a central portion thereof; A socket auxiliary ring 160 connected to the outside of the nipple 110; A socket 120 to be fitted on the socket auxiliary ring 160 and a hex nut part 131 and a bolt part 132 which are integrally connected to each other so as to sandwich the nipple 110 in a state in which the socket 120 is connected, Type bolt 130 as shown in FIG.

According to the one-touch fitting adapter of the present invention, the nipple and the nut bolt are firmly connected to each other through the shearing, and the airtightness is maintained by the O-ring inserted into the bolt inner circumferential surface of the nut bolt and the end o- Lt; / RTI >

1 is an exploded perspective view showing a straight type one-touch fitting adapter according to a first embodiment of the present invention,
2 is an assembled perspective view showing a straight type one-touch fitting adapter according to a first embodiment of the present invention,
3 is an assembled cross-sectional view showing a straight type one-touch fitting adapter according to the first embodiment of the present invention,
4 is an exploded perspective view showing an elbow type one-touch fitting adapter according to a first embodiment of the present invention,
5 is an assembled perspective view illustrating an elbow type one-touch fitting adapter according to a first embodiment of the present invention,
6 is an assembled cross-sectional view illustrating an elbow type one-touch fitting adapter according to a first embodiment of the present invention,
7 is an exploded perspective view showing a straight type one-touch fitting adapter according to a second embodiment of the present invention,
8 is an assembled perspective view showing a straight type one-touch fitting adapter according to a second embodiment of the present invention,
9 is an assembled cross-sectional view illustrating a straight type one-touch fitting adapter according to a second embodiment of the present invention,
10 is an exploded perspective view showing an elbow type one-touch fitting adapter according to a second embodiment of the present invention,
11 is an assembled perspective view showing an elbow type one-touch fitting adapter according to a second embodiment of the present invention,
12 is an assembled cross-sectional view illustrating an elbow type one-touch fitting adapter according to a second embodiment of the present invention,
13 is a perspective view showing a conventional hose connector,
FIG. 14 is an exploded cross-sectional view showing a state before the conventional hose connector of FIG. 13 is assembled,
Fig. 15 is a sectional view showing the state after assembly of the conventional hose connector shown in Fig. 13,
16 is a sectional view taken along the line AA in Fig. 15,
17 is a sectional view taken along line BB of Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

[First Embodiment]

As shown in FIGS. 1 to 3, the one-touch fitting adapter according to the first embodiment of the present invention includes a nipple 110 formed in a straight shape having a flow hole 111 at a central portion thereof, A bolt 130 having a hexagonal nut 131 and a bolt 132 integrally connected to each other to interpose the nipple 110 in a state where the socket 120 is connected to the socket 120, .

The socket 120 is a cylindrical member and has a plurality of contact protrusions 121 protruding from the inner diameter of one side and a mounting portion 122 having a diameter smaller than the diameter of the portion where the contact protrusions 121 are formed .

The straight ribs 110 are inserted into the inner diameter of the hose to be inserted so that the hoses are prevented from being pushed out. The non-slidable protrusions 112 protrude from the outer periphery of the hoses, A mounting groove 114 formed at one side of the protruding frame 113 and having an inner circumferential edge of the mounting portion 122 of the socket 120; Shaped auxiliary ring 170 is screwed on the outer periphery of the hexagonal nut 131 of the nut bolt 130 and is screwed to the screw An outer circumferential groove 116 into which a sealing ring (C ring) 140 is inserted in the middle of the protruding screw portion 115; and an outer circumferential groove 116 in which the nut- (150) of rubber material which is in close contact with the inner circumference of the bolt portion (132) Generated consists of an O-ring groove 117.

The hexagonal nut 131 of the nut bolt 130 has an inner circumferential groove 131a through which the seed ring 140 is inserted.

The one-touch fitting adapter according to the first embodiment of the present invention shown in Figs. 4 to 6 has only the shape of the ripple, and the remaining elements are the same as those of the one-touch fitting adapter shown in Figs. That is, the one-touch fitting adapter in which the ripple is an elbow type is formed with a bent portion 118 in which the mounting groove 114 of the ripple 110 and the projecting thread portion 115 are bent at 90 degrees.

Next, functions and effects of the one-touch fitting adapter according to the first embodiment of the present invention constructed as described above will be described.

First, the socket 120 is inserted through the non-slip ridges 112 of the nipple 110. The mounting portion 122 of the socket 120 is forced over the protruding frame 113 to be positioned on the outer circumference of the mounting groove 114 and is externally pressurized and fixed to the mounting groove 114. Then, a hose is connected to the non-slip projection 112 of the nipple 110.

An auxiliary ring 170 screwed to the projecting threaded portion 115 of the nipple 110 is connected to the nut type bolt 130 screwed to the end of the other member to which the nipple 110 is connected. The serring 140 inserted in the outer circumferential groove 116 of the projecting thread 115 is inserted into the hexagonal nut 131 of the nut bolt 130 on the inner side of the hexagonal nut 131 And inserted and fixed in the circumferential groove 131a.

In this way, the nipple 110 and the nut-shaped bolt 130 are firmly connected to each other through the shearing 140, and the inner peripheral surface of the bolt portion 132 of the nut-shaped bolt 130 and the inner peripheral surface of the end o- Air tightness is maintained by the O-ring 150 inserted in the O-ring 117.

[Second Embodiment]

As shown in FIGS. 7 to 9, the one-touch fitting adapter according to the second embodiment of the present invention includes a nipple 110 formed in a straight shape having a flow hole 111 at a central portion thereof, And a socket auxiliary ring 160 connected to the socket intermediate ring 160. The socket auxiliary ring 160 includes a socket 120 to be fitted on the socket auxiliary ring 160 and a hexagonal nut portion 131 and a bolt 132 are integrally connected to each other.

The socket 120 is a cylindrical member and has a plurality of contact protrusions 121 protruding from the inner diameter of one side and a mounting portion 122 having a diameter smaller than the diameter of the portion where the contact protrusions 121 are formed .

The socket auxiliary ring 160 is a ring shaped member having opposed small flanges 161 and large flanges 162 on both sides thereof and is provided between the small flange 161 and the large flange 162, Fitting groove 163 into which the mounting portion 122 of the mounting portion 122 is fitted.

The straight ribs 110 are inserted into the inner diameter of the hose to be inserted so that the hoses are prevented from being pushed out. The non-slidable protrusions 112 protrude from the outer periphery of the hoses, A mounting groove 114 formed at one side of the protruding frame 113 and having an inner circumferential edge of the socket auxiliary ring 160 and a protruding frame 113 formed at one side of the mounting groove 114, Shaped auxiliary ring 170 is screwed on the inner peripheral edge of the hexagonal nut portion 131 of the nut-shaped bolt 130, An outer circumferential groove 116 into which a shearing ring 140 is inserted in the middle of the protruding thread 115 and a threaded bolt 130 formed at one end of the protruding thread 115. [ Formed in a cylindrical shape so as to insert an O-ring 150 made of rubber, which is in close contact with the circumference of the bolt portion 132 And an O-ring insertion groove 117.

The hexagonal nut 131 of the nut bolt 130 has an inner circumferential groove 131a through which the seed ring 140 is inserted.

The one-touch fitting adapter according to the second embodiment of the present invention shown in Figs. 10 to 12 is different from that of the one-touch fitting adapter of Figs. 7 to 9 only in the shape of the ripple. That is, the one-touch fitting adapter in which the ripple is an elbow type is formed with a bent portion 118 in which the mounting groove 114 of the ripple 110 and the projecting thread portion 115 are bent at 90 degrees.

Next, functions and effects of the one-touch fitting adapter according to the second embodiment of the present invention constructed as described above will be described.

The socket auxiliary ring 160 is inserted into the protrusion 113 of the ripple 110 and is positioned at the outer circumference of the mounting groove 114 by passing through the slip prevention protrusion 112 of the nipple 110 The mounting portion 122 of the socket 120 is fixed and fixed to the interference fit groove 163 through the small flange 161 of the socket auxiliary ring 160 by externally applying pressure. Then, a hose is connected to the non-slip projection 112 of the nipple 110.

In this state, the nipple 110 is connected to the nut-shaped bolt 130 screwed to the end of the other member to be connected, that is, the auxiliary ring 170 screwed to the projecting threaded portion 115 of the nipple 110 Is inserted into the hexagonal nut portion 131 of the nut bolt 130 and the shearing 140 inserted in the middle outer circumferential groove 116 of the projecting screw portion 115 is inserted into the hexagonal nut portion 131 of the hexagonal nut portion 131 And inserted and fixed in the inner circumferential groove 131a.

In this way, the nipple 110 and the nut-shaped bolt 130 are firmly connected to each other through the shearing 140, and the inner peripheral surface of the bolt portion 132 of the nut-shaped bolt 130 and the inner peripheral surface of the end o- Air tightness is maintained by the O-ring 150 inserted in the O-ring 117.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art. And will be included in the described technical idea.

110: Nipple 111: Distribution ball
112: Slip prevention projection 113:
114: mounting groove 115: projecting thread
116: outer circumferential groove 117: O-ring insertion groove
118: Bend 120: Socket
121: contact projection 122:
130: nut bolt 131: hexagon nut part
131a: inner circumferential groove 132: bolt portion
140: Sealing 150: O ring
160: Socket auxiliary ring 161: Small flange
162: Large flange 163: Retaining groove
170: auxiliary ring

Claims (7)

A nipple 110 formed in a straight shape in which a flow hole 111 is formed in a central portion;
A socket 120 connected to the outside of the nipple 110;
And a nut bolt (130) integrally connected to the hexagonal nut part (131) and the bolt part (132) so as to fit the nipple (110) with the socket (120) connected thereto. The method according to claim 1,
The socket 120 is a cylindrical member and has a plurality of contact protrusions 121 protruding from the inner diameter of one side and a mounting portion 122 having a diameter smaller than the diameter of the portion where the contact protrusions 121 are formed ≪ / RTI >
The slip prevention protrusion 112 is inserted into the inner diameter of the hose to be inserted, and protruded to the outer periphery of the hose to prevent the hose from being pushed.
A protrusion 113 formed at one side of the non-slip protrusion 112;
A mounting groove 114 formed at one side of the protruding frame 113 and having an inner circumferential edge of the mounting portion 122 of the socket 120;
And a screw is formed on an outer circumferential surface of the mounting groove 114 so as to be engaged with the inner circumferential edge of the hexagonal nut portion 131 of the nut bolt 130 A protruding screw portion 115 to which a tier-like auxiliary ring 170 is screwed while being positioned;
An outer circumferential groove 116 into which a seed ring (C ring) 140 is inserted in the middle of the projecting thread 115;
And an O-ring insertion groove 117 formed at one side of the protruded screw portion 115 so as to insert a rubber O-ring 150 which is in close contact with the inner circumference of the bolt portion 132 of the nut- ;
Wherein the hexagonal nut part (131) of the nut bolt (130) has an inner circumferential groove (131a) into which the seed ring (140) is inserted. 3. The method of claim 2,
The ripple 110 is elbow-shaped;
Further comprising a bent portion (118) bent 90 degrees between the mounting groove (114) of the ripple (110) and the projecting threaded portion (115). A nipple 110 formed in a straight shape in which a flow hole 111 is formed in a central portion;
A socket auxiliary ring 160 connected to the outside of the nipple 110;
A socket 120 to be fitted on the socket auxiliary ring 160 and a hex nut part 131 and a bolt part 132 which are integrally connected to each other so as to sandwich the nipple 110 in a state in which the socket 120 is connected, Shaped bolt (130). 5. The method of claim 4,
The socket 120 is a cylindrical member and has a plurality of contact protrusions 121 protruding from the inner diameter of one side and a mounting portion 122 having a diameter smaller than the diameter of the portion where the contact protrusions 121 are formed ≪ / RTI >
The socket auxiliary ring 160 is a ring shaped member having opposed small flanges 161 and large flanges 162 on both sides thereof and is provided between the small flange 161 and the large flange 162, Fit fitting groove (163) into which the mounting portion (122) of the fitting portion (162) is fitted. The method according to claim 4 or 5,
The slip prevention protrusion 112 is inserted into the inner diameter of the hose to be inserted, and protruded to the outer periphery of the hose to prevent the hose from being pushed.
A protrusion 113 formed at one side of the non-slip protrusion 112;
A mounting groove 114 formed at one side of the protruding frame 113 and having an inner circumferential edge of the socket auxiliary ring 160;
And a screw is formed on an outer circumferential surface of the mounting groove 114 so as to be engaged with the inner circumferential edge of the hexagonal nut portion 131 of the nut bolt 130 A protruding screw portion 115 to which a tier-like auxiliary ring 170 is screwed while being positioned;
An outer circumferential groove 116 into which a seed ring (C ring) 140 is inserted in the middle of the projecting thread 115;
And an O-ring insertion groove 117 formed at one side of the protruded screw portion 115 so as to insert a rubber O-ring 150 which is in close contact with the inner circumference of the bolt portion 132 of the nut- under;
Wherein the hexagonal nut part (131) of the nut bolt (130) has an inner circumferential groove (131a) into which the seed ring (140) is inserted. The method according to claim 6,
The ripple 110 is formed in an elbow shape;
Further comprising a bent portion (118) bent 90 degrees between the mounting groove (114) of the ripple (110) and the projecting threaded portion (115).









KR1020150131116A 2015-09-16 2015-09-16 One touch fitting adapter KR101771314B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150131116A KR101771314B1 (en) 2015-09-16 2015-09-16 One touch fitting adapter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150131116A KR101771314B1 (en) 2015-09-16 2015-09-16 One touch fitting adapter

Publications (2)

Publication Number Publication Date
KR20170033150A true KR20170033150A (en) 2017-03-24
KR101771314B1 KR101771314B1 (en) 2017-08-24

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190024086A (en) 2017-08-31 2019-03-08 이용돈 High-pressure Nozzle Fitting
KR200491654Y1 (en) * 2020-02-04 2020-05-14 조재훈 Elbow Crimp Pipe Connector
KR200491729Y1 (en) * 2020-02-04 2020-05-26 조재훈 T-type crimped piping connector

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3058896B2 (en) * 1990-08-17 2000-07-04 安藤電気株式会社 Polarization crosstalk measurement system for polarization-maintaining optical fiber

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190024086A (en) 2017-08-31 2019-03-08 이용돈 High-pressure Nozzle Fitting
KR200491654Y1 (en) * 2020-02-04 2020-05-14 조재훈 Elbow Crimp Pipe Connector
KR200491729Y1 (en) * 2020-02-04 2020-05-26 조재훈 T-type crimped piping connector

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