KR20140038650A - Sealing structure of screw connector - Google Patents

Sealing structure of screw connector Download PDF

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Publication number
KR20140038650A
KR20140038650A KR1020120104970A KR20120104970A KR20140038650A KR 20140038650 A KR20140038650 A KR 20140038650A KR 1020120104970 A KR1020120104970 A KR 1020120104970A KR 20120104970 A KR20120104970 A KR 20120104970A KR 20140038650 A KR20140038650 A KR 20140038650A
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KR
South Korea
Prior art keywords
thread
sealing member
sealing
male
female
Prior art date
Application number
KR1020120104970A
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Korean (ko)
Inventor
박강훈
Original Assignee
박강훈
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.)
Filing date
Publication date
Application filed by 박강훈 filed Critical 박강훈
Priority to KR1020120104970A priority Critical patent/KR20140038650A/en
Publication of KR20140038650A publication Critical patent/KR20140038650A/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
    • F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
    • F16L15/006—Screw-threaded joints; Forms of screw-threads for such joints with straight threads
    • 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
    • F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
    • F16L15/04—Screw-threaded joints; Forms of screw-threads for such joints with additional sealings

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gasket Seals (AREA)
  • Non-Disconnectible Joints And Screw-Threaded Joints (AREA)

Abstract

The present invention relates to a sealing structure for a threaded coupler. A section of a female threaded portion or a male threaded portion is provided with a sealing member holding groove having a constant width to hold a sealing member (sealing tape) which is moved outwardly when the female threaded portion and the male threaded portion are threadedly engaged. A held portion of the sealing member held by the sealing member holding portion is compressed against the opposite threaded portion to improve its sealability. A circumferential surface of the held portion is formed with a threaded portion when the female threaded portion and the male threaded portion are threadedly engaged, thereby further improving the sealability. Since the sealing member is held by the sealing member holding portion, it is not necessary to again wind the sealing member at a re-coupling time after the female and male threaded portions are loosened from each other, thereby making its use convenient and reducing consumption of the sealing member.

Description

SEALING STRUCTURE OF SCREW CONNECTOR}

The present invention relates to a sealing structure of a screw connector, and more particularly, a sealing member having a predetermined width in the male thread section so as to catch and accumulate a sealing member (sealing tape) that is pushed outward when screwing the female thread and the male thread. It relates to a sealing structure of a screw connector forming an accumulation groove.

In general, fluids such as oil, gas, water including cold and hot water flow through pipes.

In this case, when a plurality of pipes are to be connected to each other, or when various valves for controlling the flow of fluid and the pipes are to be connected, in addition to when the sealing is required in connecting two objects to each other, a screw connector is used.

1 is a view showing an example of a conventional screw connector, the screw connector 1 is a female threaded connector 10 is formed with a female thread 11 on the inner peripheral surface, and a male thread 21 is formed on the outer peripheral surface of the female A male thread connector 20 is screwed to the thread 11, and a Teflon tape 30 wound around the male thread 21 to seal between the female thread 11 and the male thread 21.

Therefore, when the male thread 21 is screwed to the female thread 11 in a state where the Teflon tape 30 is wound on the male thread 21 a plurality of times, the Teflon tape 30 is the female thread 11. And close contact between the male thread mountain 21 is to be sealed.

However, when the conventional screw connector 1 is screwed to the female thread 11 while the Teflon tape 30 is wound around the male thread 21, most of the Teflon tape 30 as shown in FIG. ) Is pushed outward of the screwing portion, resulting in poor sealing performance.

In addition, since the female thread 11 and the male thread 21 are separated and recombined, the Teflon tape 30 must be rewound in the male thread 21, which is inconvenient and wasteful of the Teflon tape 30. .

An object of the present invention for solving the above problems is to seal the accumulating member (sealing tape) to be pushed outwards when the female screw thread and the male thread screwed together to accumulate a certain width of the sealing member in the female thread or male thread section. By forming the accumulating groove, the accumulating portion of the sealing member accumulating on the sealing member accumulating groove is compressed on the mating thread side to improve the sealing property, and a screw thread is formed on the outer circumferential surface of the accumulating portion during the screwing process of the female and male threads. Since it is compressed on the mating thread side, the sealing property can be further improved, and since the sealing member is accumulated in the sealing member accumulating groove, it is not necessary to rewind the sealing member when separating and rejoining the female and male threads. It provides a sealing structure of screw connector that is convenient and reduces waste of sealing member. There is.

The present invention for achieving the above object, in the sealing structure of the screw connector comprising a female threaded connector formed with a female thread on the inner circumferential surface, and a male threaded connector is formed on the outer circumferential surface and screwed to the female thread, the female screw A certain width that is formed between the sealing member installed between the thread and the male thread and the female member or the male thread of the screw connector, and that catches and accumulates the sealing member that is pushed outwards when screwing the female thread and the male thread. And a sealing member accumulating groove, wherein the sealing member accumulates in the sealing member accumulating groove and is formed to seal between the female screw thread and the male screw thread.

The present invention provides a sealing member accumulating groove portion having a predetermined width in a female threaded or male threaded section of a screw connector so as to catch and accumulate a sealing member (sealing tape) that is pushed outward when screwing a female thread and a male thread. The accumulating portion of the sealing member accumulated in the member accumulating groove portion can be pressed against the mating thread side to improve the sealing property.

In addition, since the screw thread is formed on the outer circumferential surface of the accumulation part in the screwing process of the female screw thread and the male screw thread, the sealing property can be further improved.

In addition, since the sealing member is accumulated in the sealing member accumulating groove, the sealing member does not need to be rewound when the female thread and the male thread are separated and then recombined, thereby simplifying use and reducing waste of the sealing member.

In addition, by forming a sealing member accumulating groove portion in the screw thread of the female thread or male thread itself, the sealing tape accumulates in the sealing member accumulating groove, thereby effectively reducing the space generated when repeated expansion and contraction of the female screw connector and the male screw connector. Blocking improves sealing.

1 is a cross-sectional view showing a sealing structure of a conventional screw connector,
Figure 2 is an exploded cross-sectional view showing a first embodiment of the sealing member accumulation groove in the sealing structure of the screw connector according to the invention,
3 is a cross-sectional view showing a first embodiment of a sealing member accumulation groove in a sealing structure of a screw connector according to the present invention;
4 is a cross-sectional view showing a state in which the male threaded connector is separated from the female threaded connector in FIG. 3;
5 is an exploded cross-sectional view showing a second embodiment of a sealing member accumulation groove in a sealing structure of a screw connector according to the present invention;
6 is a cross-sectional view showing a second embodiment of the sealing member accumulation groove in the sealing structure of the screw connector according to the present invention;
7 is an exploded cross-sectional view showing a third embodiment of the sealing member accumulation groove in the sealing structure of the screw connector according to the present invention;
8 and 9 are combined cross-sectional view showing a third embodiment of the sealing member accumulation groove in the sealing structure of the screw connector according to the present invention;
10 is a cross-sectional view showing a fourth embodiment of the sealing member accumulation groove in the sealing structure of the screw connector according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

As shown, the sealing structure of the screw connector according to the present invention is a sealing structure when connecting two objects to each other, the object is connected to each other by screwing, including pipes, valves, pressure gauges, faucets, etc. All parts can be.

Hereinafter, in the present invention, the two objects will be described by expressing the female threaded connector 110 and the male threaded connector 120.

The female threaded connector 110, the female thread 111 is formed on the inner peripheral surface.

The male screw connector 120, the male thread 121 is formed on the outer peripheral surface is screwed with the female thread (111).

In this case, the length of the section in which the male screw thread 121 is formed on the outer circumferential surface of the male screw connector 120 may be screwed with the female screw thread 111 so as to have a proper length according to the purpose of use.

Meanwhile, in the drawing, the gap between the female screw thread 111 and the male screw thread 121 is largely shown for convenience.

A sealing member 130 is installed between the female threaded thread 111 of the female threaded connector 110 and the male threaded 121 of the male threaded connector 120.

The sealing member 130 is formed of a sealing tape 131 wound a plurality of times on the male screw thread 121.

Here, the sealing tape 131 is an example of teflon tape.

The sealing tape 131 may be wound several times in the male screw thread 121 section. The sealing tape 131 may be wound around the entire male screw thread 121 section, and the sealing member accumulating groove 125 which will be described later from the end of the male screw thread 121 will be described later. You may wind up the section until.

In addition, in the female thread 111 or the male thread 121 section of the screw connector 100, the female screw thread 111 and the male screw thread 121 are pushed outward in the direction of screwing when screwed together. Sealing member accumulation grooves 125 and 125a having a predetermined width are formed to hold and accumulate the sealing member 130.

The sealing member accumulating grooves 125 and 125a may be configured in various embodiments as shown in FIGS. 2 to 10.

First, the first embodiment of the sealing member accumulating groove 125 shown in Figures 2 to 4 is formed in a predetermined width within the male screw thread 121 section of the male screw connector 120, that is, the male screw ( 121 is formed on the outer circumferential surface of the male screw connector 120 in the section, it is formed to have a predetermined width and a predetermined depth because the sealing tape 131 is to be accumulated.

In addition, the male screw thread 121 is formed on the outer circumferential surface of the male screw connector 120 in a spiral direction at an angle, but the sealing member accumulation groove 125 is formed in the horizontal direction. That is, the sealing member accumulating groove 125 is formed at a right angle with respect to the center line of the male screw connector (120).

In addition, a male thread 121 is not formed in a portion where the sealing member accumulating groove 125 is formed in the male screw thread 121 section, thereby forming an accumulation space of the sealing member 130 accumulating part 132. .

Due to this, the male screw thread 121 is divided into a plurality of seal member accumulating grooves 125.

As such, by forming the sealing member accumulating groove 125 in the section of the male thread 121 and cutting the male thread 121, the female thread thread is wound around the male thread 121 in a state where the sealing tape 131 is wound. When the sealing tape 131 is pushed outwards when the thread 111 is screwed with the 111, it is accumulated in the sealing member accumulation groove 125 without being pushed further by the sealing member accumulation groove 125 having no thread.

In addition, by sealing between the female screw thread 111 and the male screw thread 121 through the accumulating portion 132 of the sealing member (sealing tape 131) that is accumulated and formed in the sealing member accumulation groove 125. The sealing property can be improved.

Here, the accumulating portion 132 of the sealing member (sealing tape 131) is a sealing tape 131 wound on the male thread 121 when screwing the female thread 111 and the male thread 121. Is accumulated in the sealing member accumulation groove 125 while being pushed outward.

In other words, the accumulation portion 132 of the sealing tape 131 is not formed when the sealing tape 131 is first wound on the male thread 121, and the female thread 111 and the male thread 121 are wound. Only during the screwing process, the sealing tape 131 is pushed outward and accumulated in the sealing member accumulation groove 125 to be newly formed.

At this time, since the sealing tape 131 wound on the male thread 121 is accumulated in the sealing member accumulation groove 125, a large amount of the sealing tape 131 is accumulated in the sealing member accumulation groove 125 and is bundled. As a result, the accumulating portion 132 of the sealing tape 131 is further compressed to the female thread 111 to improve the sealing property.

In addition, when the female screw thread 111 and the male screw thread 121 are screwed together, the amount of the sealing tape 131 accumulated in the sealing member accumulating groove 125 as described above is large, and thus, the female thread thread 111 and the male screw thread 121 are pressed against the female thread thread 111. In this process, the thread 133 is formed on the outer circumferential surface of the accumulation part 132 of the sealing tape 131 accumulated in the sealing member accumulation groove part 125.

3 is a cross-sectional view in which the female thread 111 and the male thread 121 are screwed together, and the thread 133 is formed on an outer circumferential surface of the accumulating portion 132 of the sealing tape 131 accumulated in the sealing member accumulation groove 125. It can be seen that the compression is formed on the female screw thread 111 side.

At this time, the screw thread 133 of the accumulating portion 132 filled in the sealing member accumulating groove 125 forms an integral screw thread connected to the male screw thread 121 and the female screw thread 111 and the male screw thread 121. Since the accumulation part 132 is still maintained in the sealing member accumulating groove 125 even after the separation, the sealing tape 131 needs to be rewound when the female thread 111 and the male thread 121 are recombined. There is no use, and the waste of the sealing tape 131 can be reduced.

5 and 6 illustrate a second embodiment of the sealing member accumulating groove 125, and a plurality of sealing member accumulating grooves 125 are formed to be spaced apart from each other by a predetermined interval within the male screw thread 121 section as shown. It is. In the drawing, two sealing member accumulation grooves 125 are formed in the male screw thread 121 section.

As such, when a plurality of the sealing member accumulating grooves 125 are formed in the male screw thread 121 section, the accumulating part 132 of the sealing member (sealing tape 131) is the female thread 111 and the male thread. When the thread 121 is screwed, the sealing tape 131 wound on the male thread 121 is pushed outward and divided and accumulated in the plurality of sealing member accumulation grooves 125 to be divided into a plurality of threads.

That is, when the female thread 111 and the male thread 121 are screwed together, the sealing tape 131 wound around the male thread 121 is pushed outward and accumulated in each sealing member accumulation groove 125. Since the accumulating part 132 of the sealing tape 131 is divided into a plurality of parts, the accumulating part 132 of the sealing tape 131 is divided into a plurality of points of the female thread 111. Compression can further improve the sealing property.

7 to 9 show a third embodiment of the sealing member accumulating groove 125a, and as shown, the sealing member accumulating groove 125a is formed of the female screw thread 111 or the male screw thread 121a. The thread itself is formed to have a predetermined width to form an accumulation space of the sealing member (sealing tape 131) accumulator 132.

7 and 8 form the sealing member accumulating groove portion 125a in the thread itself of the male screw thread 121, and FIG. 9 shows the sealing member accumulating groove portion 125a in the screw thread itself of the female thread thread 111. .

In FIG. 7, the enlarged view shows a case in which about half of the thread itself is formed by the sealing member accumulating groove 125a, wherein the sealing member accumulating groove 125a should not exceed half the size of the screw and less than half of the screw thread. It is preferable to form the size of.

On the other hand, although the sealing member accumulating groove portion 125 of the first embodiment is formed horizontally, the sealing member accumulating groove portion 125a of the third embodiment is formed in the thread itself, and thus is formed in a spiral direction together with the screw thread.

As such, when the sealing member accumulation groove 125a is formed in the female thread 111 or the male thread 121 itself, the sealing tape 131 accumulates between the female thread 111 and the male thread 121. The space that can be made is created.

Therefore, when the female thread 111 and the male thread 121 are screwed together, the sealing tape 131 wound on the male thread 121 is pushed outward and the sealing member accumulation groove 125a formed in the thread itself is formed. It will accumulate at the edge and will not be pushed out anymore, but will be pressed against the mating threads and sealed.

In addition, when the sealing member accumulating groove portion 125a is formed in the thread itself to accumulate the accumulating portion 132 of the sealing tape 131 in the sealing member accumulating groove portion 125, the female threaded connector 110 and the male screw connector. By effectively blocking the space generated when the expansion and contraction of the 120 is repeated to improve the sealing property.

10 is a fourth embodiment of the sealing member accumulating groove 125a, and as shown, a structure in which the first embodiment and the third embodiment are mixed, and the male screw thread 121 section of the male thread connector 120 is shown. A sealing member accumulating groove portion 125a formed in a predetermined width within the male screw thread 121 and the thread member itself of the female thread 111 or the male screw thread 121 is formed in a predetermined width. ) Are all equipped.

Thus, both the advantages of the first embodiment and the advantages of the third embodiment can be obtained.

Hereinafter, the operation of the sealing structure of the screw connector according to the present invention will be described, for convenience only the first embodiment will be described.

First, the sealing tape 131 is wound on the male thread 121 of the male thread connector 120 a plurality of times, and then the female thread of the female thread connector 110 is wound around the male thread mountain 121 on which the sealing tape 131 is wound. Screwed to (111).

When the threaded thread 121 on which the sealing tape 131 is wound is screwed to the female threaded thread 111, the sealing tape 131 is pushed outward in a screwing part during the screwing process. At this time, the sealing tape 131 is pushed up to the sealing member accumulation groove 125 without a screw thread and is accumulated in the sealing member accumulation groove 125 without being pushed out any more.

The larger the amount of the sealing tape 131 accumulated in the sealing member accumulation groove 125, the greater the force compressed on the female thread 111 side.

When the screwing of the female thread 111 and the male thread 121 is completed, a thread is formed on an outer circumferential surface of the accumulating portion 132 of the sealing tape 131 accumulated in the sealing member accumulating groove 125 so that the female screw thread is formed. Since it is crimped | bonded by the (111) side, sealing property is improved.

Thereafter, after the female thread 111 and the male thread 121 are separated, the accumulating portion 132 of the sealing tape 131 is maintained in the sealing member accumulation groove 125 even when recombination, so that the sealing tape ( The female screw thread 111 and the male screw thread 121 can be screwed together without having to rewind the 131.

100: screw connector 110: female thread connector
111: female thread 120: male thread connector
121: male thread 125,125a: sealing member accumulation groove
130: sealing member 131: sealing tape
132: accumulator 133: thread

Claims (7)

Sealing structure of the screw connector consisting of a female thread connector (110) having a female thread (111) formed on the inner circumferential surface, and a male thread connector (121) formed on the outer circumferential surface of the female thread (111). To
A sealing member 130 installed between the female thread 111 and the male thread 121;
The sealing member 130 is formed within the female thread 111 or the male thread 121 of the screw connector 100 and is pushed outward when the female thread 111 and the male thread 121 are screwed together. And a sealing member accumulation groove portion 125 and 125a having a predetermined width to hold and accumulate the
A screw, characterized in that for sealing between the female thread 111 and the male thread 121 through the accumulating portion 132 of the sealing member 130 accumulated and formed in the sealing member accumulation grooves (125, 125a). Sealing structure of the connector. The method according to claim 1,
The sealing member accumulating groove 125 is formed in a predetermined width within the male screw thread 121 section of the male screw connector 120, but the male screw 121 is not formed in the sealing member accumulating groove 125. Sealing member 130 The sealing structure of the screw connector characterized in that the accumulation space of the accumulator 132 is formed. The method according to claim 1,
The sealing member accumulating groove 125a is formed in a thread width of the female thread 111 or the male thread 121 to have a predetermined width to form an accumulation space of the sealing member 130 accumulating part 132. Sealing structure of the screw connector characterized in that. 3. The method of claim 2,
The sealing member 130 is made of a sealing tape 131 wound around the male thread 121 a plurality of times,
The accumulating portion 132 of the sealing member 130 has a sealing tape 131 wound on the male thread 121 when the female thread 111 and the male thread 121 are screwed to the outside. It is formed by accumulating in the sealing member accumulation groove 125,
On the outer circumferential surface of the accumulating portion 132 accumulated in the sealing member accumulating groove 125, a screw thread 133 is formed in the screwing process of the female thread 111 and the male thread 121 to the female thread 111. Sealing structure of the screw connector, characterized in that the crimp. 3. The method of claim 2,
The sealing member 130 is made of a sealing tape 131 wound around the male thread 121 a plurality of times,
The sealing member accumulating groove portion 125 is formed in a plurality of spaced apart from each other in the male screw thread 121 interval,
The accumulating portion 132 of the sealing member 130 has a sealing tape 131 wound on the male thread 121 when the female thread 111 and the male thread 121 are screwed to the outside. Sealing structure of the screw connector, characterized in that divided into the plurality of sealing member accumulating groove portion 125 is formed in a plurality. The method of claim 3,
The sealing member 130, the sealing structure of the screw connector, characterized in that consisting of a sealing tape 131 is wound on the male thread (121) a plurality of times. The method according to claim 2 or 4,
The sealing member accumulating groove part is formed in a thread width of the female thread 111 or the male thread 121 to have a predetermined width to form a sealing member accumulating groove part forming an accumulation space of the sealing member 130 and the accumulating part 132 ( The sealing structure of the screw connector, characterized in that it further comprises 125a).
KR1020120104970A 2012-09-21 2012-09-21 Sealing structure of screw connector KR20140038650A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020120104970A KR20140038650A (en) 2012-09-21 2012-09-21 Sealing structure of screw connector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020120104970A KR20140038650A (en) 2012-09-21 2012-09-21 Sealing structure of screw connector

Publications (1)

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KR20140038650A true KR20140038650A (en) 2014-03-31

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Application Number Title Priority Date Filing Date
KR1020120104970A KR20140038650A (en) 2012-09-21 2012-09-21 Sealing structure of screw connector

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110159844A (en) * 2019-06-26 2019-08-23 柳道万和(苏州)热流道系统有限公司 The installation method of sealing device and sealing device
KR102213246B1 (en) * 2019-11-08 2021-02-08 (주)지호이엠에스 Expansion joint

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110159844A (en) * 2019-06-26 2019-08-23 柳道万和(苏州)热流道系统有限公司 The installation method of sealing device and sealing device
KR102213246B1 (en) * 2019-11-08 2021-02-08 (주)지호이엠에스 Expansion joint

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