KR101831706B1 - Safety coupler - Google Patents

Safety coupler Download PDF

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Publication number
KR101831706B1
KR101831706B1 KR1020150174636A KR20150174636A KR101831706B1 KR 101831706 B1 KR101831706 B1 KR 101831706B1 KR 1020150174636 A KR1020150174636 A KR 1020150174636A KR 20150174636 A KR20150174636 A KR 20150174636A KR 101831706 B1 KR101831706 B1 KR 101831706B1
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KR
South Korea
Prior art keywords
coupler body
sleeve
safety
valve
coupler
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Application number
KR1020150174636A
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Korean (ko)
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KR20170067987A (en
Inventor
김승열
박인수
Original Assignee
킴스엔지니어링 주식회사
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Priority to KR1020150174636A priority Critical patent/KR101831706B1/en
Publication of KR20170067987A publication Critical patent/KR20170067987A/en
Application granted granted Critical
Publication of KR101831706B1 publication Critical patent/KR101831706B1/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
    • F16L37/22—Couplings of the quick-acting type in which the connection is maintained by means of balls, rollers or helical springs under radial pressure between the parts
    • 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
    • F16L37/22—Couplings of the quick-acting type in which the connection is maintained by means of balls, rollers or helical springs under radial pressure between the parts
    • F16L37/23—Couplings of the quick-acting type in which the connection is maintained by means of balls, rollers or helical springs under radial pressure between the parts by means of balls
    • 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
    • F16L37/28—Couplings of the quick-acting type with fluid cut-off means
    • 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
    • F16L37/28—Couplings of the quick-acting type with fluid cut-off means
    • F16L37/38—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in only one of the two pipe-end fittings
    • 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
    • F16L37/28—Couplings of the quick-acting type with fluid cut-off means
    • F16L37/38—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in only one of the two pipe-end fittings
    • F16L37/40—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in only one of the two pipe-end fittings with a lift valve being opened automatically when the coupling is applied

Abstract

The present invention is directed to providing a safety coupler, wherein the safety coupler of the present invention comprises a coupler body (10); A sleeve 20 slidably coupled to a distal end side outer peripheral surface of the coupler body 10; A locking ball 30 coupled to a ball hole 12 penetrating the inner and outer peripheral surfaces of the coupler body 10; An elastic body (EL) for elastically urging the sleeve (20) to advance toward the distal end side of the coupler body (10); (50) is provided on the outer circumferential surface of the coupler body (10) so as to secure a space between the outer circumferential surface of the sleeve (20) and the inner circumferential surface of the sleeve (20) And a safety ring (50).

Description

Safety coupler

More particularly, the present invention relates to a safety coupler, and more particularly, to a safety coupler in which, when an operator enters and exits a structure having a height as high as inside a large tank, the operator is quickly separated from the structure, The present invention relates to a new safety coupler.

Generally, a coupler is a connection that connects a pipe, a pipe, a hose, and a hose to move a gas, oil, or the like smoothly. Couplers are also used to connect hoses and hoses, which are connected to pneumatic and hydraulic systems and are used to transport fluids.

On the other hand, oil tank storage tanks for oil tankers, gas storage tanks for LNG carriers and other large storage tanks need to be periodically cleaned internally. The operator must go inside the large tank and clean it. In the oil storage tank or the gas storage tank, toxic substances such as harmful gas can not enter the worker, and the operator wears the safety helmet and safety helmet. At this time, the safety clothing should come down to the waist of the worker and be sealed to the outside, and the safety helmet should be connected to the safety clothing to cover the entire head. A safety helmet is required to seal the body of the worker from the outside air and a safety helmet must seal the entire head and face to the outside. Therefore, a separate oxygen supply hose is connected to the safety helmet, and the oxygen supply hose is connected to the outside oxygen Lt; / RTI >

In order to supply oxygen from the external oxygen supply unit and the oxygen supply hose, the oxygen supply hose of the oxygen supply unit and the safety helmet A safety coupler is used to connect the oxygen supply hoses to each other.

However, the existing safety coupler has a serious problem to prevent a safety accident that may occur due to a fall or the like when a worker moves in and out of a large tank. In other words, when the worker falls down the ladder through the ladder or climbs up the ladder when the worker slips and falls, the oxygen supply hose may be wound around the worker's neck, and thus the oxygen supply hose may be wound around the worker's neck If the safety coupler is not quickly disconnected, a large impact force (ie, the force that the oxygen supply hose tightens the worker's neck instantaneously) causes the oxygen supply hose to wind on the neck, causing the operator to break the neck and cause serious safety accidents There is a serious problem. In other words, even if the operator falls within a large tank, the safety coupler can be separated in time to prevent a serious safety accident that the operator breaks the neck due to the tightening force of the oxygen supply hose wound around the neck. However, There is a serious problem in that there is no function to prevent such safety accidents.

Korean Registered Utility Model No. 20-0458162 (Registered on January 12, 2012) Korean Patent Laid-Open Publication No. 10-2014-0011734 (published on April 29, 2014) Korean Registered Utility Model No. 20-0280059 (registered on June 17, 2002)

SUMMARY OF THE INVENTION The present invention has been developed in order to solve the problems as described above, and it is an object of the present invention to provide an apparatus and a method for operating a structure, such as a case where a worker falls on a structure, The present invention is intended to provide a new safety coupler which can prevent various safety accidents that may occur when the operator is slacked by the oxygen supply hose due to rapid separation.

According to an aspect of the present invention, there is provided a coupler comprising: a coupler body; A sleeve 20 slidably coupled to a distal end side outer peripheral surface of the coupler body 10; A locking ball 30 coupled to a ball hole penetrating the inner and outer peripheral surfaces of the coupler body 10; An elastic body 40 for elastically urging the sleeve 20 to advance toward the distal end side of the coupler body 10; A plug (50) having a locking groove for receiving and engaging the ball on the outer circumferential surface and coupled to the body; And a safety breaking cutout portion 62 provided on the outer circumferential surface of the coupler body 10 so as to be spaced apart from the inner circumferential surface of the sleeve 20, And a safety ring (60) formed on the outer circumferential surface of the safety ring (60).

The present invention is based on the fact that when an operator hangs on a structure such as when a worker is hurried when entering or exiting a structure having a height as high as inside a large tank, when the oxygen supply hose is wound around the neck to apply a large impulsive force to the neck, So that the operator can prevent various serious safety accidents that may occur when the oxygen supply hose is wound around the neck. When the safety ring is disposed outside the locking ball and the locking ball is pressed against the safety ring at a predetermined pressure or more, the safety connection ring cuts the ring connecting portion, which is thinner than the other portions, Is separated from the oxygen supply hose so that the operator avoids various serious safety accidents that may occur when the oxygen supply hose is wound around the neck.

Of course, the present invention has various effects in addition to the above effects, but the above-described effects are considered to be the main effects of the present invention.

1 is an exploded perspective view of a safety coupler according to the present invention;
2 and 3 are cross-sectional views showing the internal structure of the safety coupler of the present invention
4 is an enlarged view of a portion A in Fig. 3
5 is a conceptual view showing the coupling of the safety ring and the locking ball, which are the main components of the present invention, and the process of breaking the safety ring

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The objects, features and advantages of the present invention will be more readily understood by reference to the accompanying drawings and the following detailed description. In the following description of the present invention, a 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.

In describing the components of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. For example, if a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected or connected to the other component, It is to be understood that other components may be "connected "," coupled "

Referring to the drawings, the safety coupler according to the present invention includes a safety coupler in which a sleeve 20 is slidably coupled to a proximal end portion of a coupler body 10, a coupling ball 30 is provided in a coupler body 10, 20 are elastically biased to the front end of the coupler body 10 by the elastic body EL and the plug 40 is engaged with the coupler body 10 and the outer side of the locking ball 30 and the inner peripheral surface of the sleeve 20 The safety ring 50 can be disposed between the upper and lower portions of the base plate 50 to prevent a safety accident.

The coupler body 10 has a circular tube shape in which an inner space communicates with the tip end portion and the base end portion. A packing groove is provided on the outer peripheral surface of the front end side of the coupler body 10, and a packing PK is coupled to the packing groove.

In addition, the coupler body 10 is provided with a ball hole 12. The ball hole 12 penetrates from the outer circumferential surface to the inner circumferential surface of the coupler body 10. The ball holes 12 are provided in a plurality of radial directions with respect to the center of the coupler body 10 as a reference. It goes without saying that the number of the ball holes 12 can be increased or decreased.

Further, a threaded portion is provided on the inner peripheral surface of the coupler body 10. A threaded portion is provided on the inner peripheral surface adjacent to the proximal end of the coupler body 10. The coupler body 10 has a step portion on the inner peripheral surface on the front side of the threaded portion. The coupler body 10 has a stepped portion on the outer peripheral surface on the base end side.

A nipple 16 is provided at the base end of the coupler body 10. The nipple 16 is provided with a threaded portion on the outer peripheral surface on the tip end side so that the threaded portion of the outer peripheral surface of the nipple 16 is engaged with the threaded portion provided on the inner peripheral surface of the base end side of the coupler body 10, As shown in Fig. At this time, a packing PK is interposed between the tip portion of the nipple 16 and the step portion provided on the inner peripheral surface of the coupler body 10. A preliminary coupling packing groove is provided in the step portion of the coupler body 10 so that a preliminary coupling protrusion protruded on both sides of the packing PK is inserted into the preliminary coupling packing groove and one side of the packing PK is coupled to the coupler body And the threaded portion of the nipple 16 is threadedly engaged with the threaded portion of the inner circumferential surface of the coupler body 10 in a state in which the packing PK is in contact with the stepped portion of the coupler body 10, The packing PK can be sealingly interposed between the step portion of the coupler body 10 and the base end portion of the nipple 16 since the stepped portion is pressed against the step portion. The connection portion of the coupler body 10 and the nipple 16 is sealed by the packing PK. Since the nipple 16 is coupled to the coupler body 10, the structure of the coupler body 10 can be said to be the nipple 16 itself. Meanwhile, the connection sleeve portion of the nipple 16 is provided with a jaw, and a hose or the like to be connected may be connected to the connection sleeve portion.

The sleeve (20) has a circular tubular shape in which an inner space portion communicates from a distal end portion to a proximal end portion. The sleeve 20 is slidably coupled to the outer circumferential surface of the coupler body 10. That is, the sleeve 20 can be coupled to the outer circumferential surface of the coupler body 10 so as to be able to move back and forth.

A ball catching portion 32 is provided on the inner circumferential surface of the sleeve 20. The ball catching portion 32 has a concave groove structure. The rear engaging surface of the ball engaging portion 32 is perpendicular to the longitudinal direction of the sleeve 20 and the front engaging surface of the ball engaging portion 32 is composed of a tapered portion. The front engaging surface is composed of a surface inclined downward from the tip end of the sleeve 20 toward the proximal end.

The sleeve 20 is provided with a washer groove on the inner peripheral surface between the ball catching portion 32 and the base end portion, and the washer 24 is engaged with the washer groove. The washer 24 is disposed to face the ball catching portion 32. That is, the washer 24 is disposed at a position facing the rear engaging surface of the ball catching portion 32. At this time, the washer 24 has a cut-out portion 24a penetrating through both sides so that the washer 24 is seated in the washer groove on the inner circumferential surface of the sleeve 20 in a state where the washer is compressed in such a manner that its outer diameter is reduced by the cut- And the washer 24 has its own elastic restoring force so that the washer 24 is engaged with the washer groove of the inner circumferential surface of the sleeve 20 so as not to be detached. The washer 24 is brought into contact with the inner circumferential surface of the sleeve 20 so that the washer 24 is brought into contact with the washer 24 by the inner circumferential surface of the sleeve 20, 24 are pressed. The washer 24 can be pressed by the inner circumferential surface of the sleeve 20 with the cut portion 24a. In this state, when the washer 24 is pushed toward the washer groove on the inner circumferential surface of the sleeve 20, the washer 24 is expanded to the original state by the elastic force of the washer 24 The washer 24 does not fall out of the washer groove of the sleeve 20 because the washer 24 is seated in the washer groove on the inner circumferential surface of the sleeve 20. A safety ring coupling space is secured between the washer 24 and the ball engagement portion 32 on the inner circumferential surface of the sleeve 20 so that a safety ring 50 described later can be engaged. The washer 24 faces the step portion of the outer circumferential surface of the coupler body 10 in a state where the sleeve 20 is coupled to the outer circumferential surface of the coupler body 10.

A locking ball 30 is coupled to a ball hole 12 penetrating the inner and outer peripheral surfaces of the coupler body 10. A portion of the locking ball 30 is received in the ball hole 12 of the coupler body 10 so that the locking ball 30 moves from the ball hole 12 toward the center of the coupler body 10, As shown in FIG. The coupler body 10 is provided with a plurality of ball holes 12 in the radial direction so that a plurality of locking balls 30 are radially arranged in the coupler body 10.

The sleeve 20 can be advanced by the elastic body EL toward the front end of the coupler body 10 while the sleeve 20 is retracted toward the proximal end of the coupler body 10. [

The elastic body EL may be a spring. The elastic body EL is coupled to the outer peripheral surface of the coupler body 10. [ An elastic body (EL) is disposed inside the inner peripheral surface of the sleeve (20). An elastic body EL is interposed between the step portion formed on the outer peripheral surface of the coupler body 10 and the washer 24 provided on the inner peripheral surface of the sleeve 20. [ That is, both end portions of the elastic body (EL) are respectively in contact with the step portion formed on the outer peripheral surface of the coupler body (10) and the washer (24) provided on the inner peripheral surface of the sleeve (20). The elastic body EL compresses and holds the elastic force in a state where the sleeve 20 is retracted to the base end of the coupler body 10. When the sleeve 20 is advanced to the distal end of the coupler body 10, Is released. The elastic body EL becomes the original length when the sleeve 20 advances to the distal end portion of the coupler body 10. [

A valve 17 to be described later is advanced toward the distal end of the coupler body 10 in a state in which the sleeve 20 is retracted toward the proximal end of the coupler body 10 and the locking ball 30 The locking ball 30 is pushed away from the center of the coupler body 10 while the locking ball 30 is engaged with the ball hole 12 of the coupler body 10 and the ball catching portion 32 of the inner circumferential surface of the sleeve 20, And the elastic body EL is in a compressed state. The locking ball 30 is caught by the front engaging surface of the ball engaging portion 32 on the inner circumferential surface of the sleeve 20. [

The valve 17 moves backward toward the proximal end of the coupler body 10 when the sleeve 20 is advanced toward the proximal end of the coupler body 10. [ That is, a coupling sleeve portion of a plug 40 is inserted into a hose or the like to be connected to the plug 40, and the plug 40 is connected to a hose or the like. The plug 40 enters the coupler body 10 of the safety coupler of the present invention, The valve 17 is pulled back toward the proximal end of the coupler body 10 so that the valve 17 is moved backward. When the valve 17 is retracted, the locking ball 30 comes into the locking groove 42 (in the form of a concave groove) provided on the outer peripheral surface of the plug 40 and is pushed into the center of the coupler body 10, The locking ball 30 is disengaged from the ball catching portion 32 on the inner circumferential surface of the elastic body 20 and the elastic body EL is released from its compressed state and unfolded to its original length. In other words, the elastic body EL resiliently urges the sleeve 20 to advance toward the distal end side of the coupler body 10 so that the locking ball 30 is pulled out of the ball catching portion 32 of the sleeve 20, And the locking ball 30 is inserted into the locking groove 42 of the concave groove-shaped groove of the locking groove 30a.

The valve 17 is coupled to the inside of the coupler body 10 such that it can move back and forth. The valve 17 is in the form of a circular tube in which the distal end portion and the proximal end portion are in communication with each other. The valve (17) is provided with a step portion on the outer circumferential surface thereof. Further, the valve 17 has a packing groove on the inner peripheral surface thereof, and the packing groove packing PK of the valve 17 is engaged. On the other hand, the front end portion of the packing PK (the end portion which comes into contact with the end portion of the plug 40) is constituted by the curved surface portion 57. At this time, the inner diameter of the curved surface portion 57 is gradually increased from the proximal end portion of the packing PK toward the distal end portion. That is, the portion where the curved portion is formed in the packing PK gradually flares from the proximal end to the distal end of the packing PK. On the other hand, the packing PK may be formed as a tapered portion instead of the curved portion. In the case of the tapered portion, the inner diameter of the tapered portion may be gradually increased from the proximal end portion of the packing PK toward the distal end portion.

In addition, a stepped portion is provided on the outer circumferential surface of the valve (17). The step portion includes a front step portion and a rear step portion. The front step is disposed in front of the packing PK provided inside the coupler body 10 and the rear step is disposed between the base end of the coupler body 10 and the packing PK inside the coupler body 10 . That is, a rear step portion is provided behind the packing PK, and the rear step portion is disposed at a position where it can be brought into close contact with the packing PK. A valve elastic body (EL) is interposed between the inside of the nipple (16) of the coupler body (10) and the valve (17). That is, the valve elastic body EL is accommodated in the inner space of the coupler body 10, and at the same time, the valve elastic body EL is mounted on the base end of the valve 17 and the step portion provided inside the nipple 16 of the coupler body 10, Are in contact with each other. The valve elastic body (EL) is fitted in a stem portion provided at the base end portion of the valve (17). The valve elastic body EL does not deviate from the moving center portion of the valve 17 and the elastic center line of the valve elastic body EL and the moving center portion of the valve 17 are arranged in the same line Accordingly, the movement accuracy of the valve 17 can be ensured when the valve 17 is moved back and forth by the operation in which the valve elastic body EL is pressed and unfolded.

When the valve 17 is pressed toward the proximal end side of the coupler body 10, that is, toward the nipple 16 provided at the proximal end of the coupler body 10, the valve elastic body EL is compressed and can retain elastic force . At this time, the valve elastic body EL is composed of a tapered spring whose outer diameter gradually decreases from one end to the other end. That is, the valve elastic body EL is composed of a tapered spring whose outer diameter gradually decreases from the proximal end side to the distal end side of the coupler body 10. When the piston (50) is pushed toward the adapter (20), the outer piston elastic body (EL) (62) is compressed and can retain elastic force.

The valve elastic body EL pushes the valve 17 toward the front end side of the coupler body 10 so that the rear end of the valve 17 is pressed against the packing PK. When the rear end of the valve 17 is pressed against the packing PK, the inner space of the coupler body 10 is sealed by the valve 17. That is, the tip end portion and the base end portion of the inner space portion of the coupler body 10 are clogged by the intermediate valve 17. When the inner space of the coupler body 10 is closed by the valve 17, the internal space of the nipple 16 of the coupler body 10 is also closed by the valve 17.

The valve (17) is provided with a valve hole (17a) penetrating from the inner circumferential surface to the outer circumferential surface. A plurality of valve holes (17a) are provided radially with respect to the center of the valve (17). The valve 17 is spaced apart from the inner circumferential surface of the coupler body 10 and the valve 17 is spaced apart from the inner circumferential surface of the packing PK inside the coupler body 10, The valve hole 17a is spaced apart from the inner circumferential surface of the packing PK of the coupler body 10. At this time, if the rear stepped portion of the valve 17 is pressed against the packing PK in the coupler body 10 by the force of the valve elastic body EL, the valve hole 17a of the valve 17 and the coupler body 10 and the valve hole 17a are in communication with each other and the rear step portion of the valve 17 is spaced apart from the packing PK inside the coupler body 10, The valve hole 17a of the valve body 17 and the inner space portion of the coupler body 10 are closed.

The safety ring 50 is disposed on the outer side of the locking ball 30 and is coupled to the outer circumferential surface of the coupler body 10 so as to secure a predetermined space between the inner circumferential surface of the sleeve 20 and the inner circumferential surface of the sleeve 20. In the present invention, the coupler body 10 is in the form of a circular tube so that the safety ring 50 is also formed in a circular ring shape. Of course, vary with the shape of the coupler body 10 of the safety ring 50. The safety ring 50 is coupled to the safety ring engagement space between the washer 24 and the ball engagement portion 32 provided in the sleeve 20. Specifically, the safety ring 50 is engaged between the rear engagement surface of the ball engagement portion 32 provided on the inner circumferential surface of the sleeve 20 and the washer 24. The safety ring 50 can be disposed outside the locking ball 30 coupled to the ball engagement hole of the coupler body 10 in a state where the safety ring 50 is engaged with the safety ring engagement space of the sleeve 20. [ The safety ring 50 is disposed on the outer side of the locking ball 30 and the sleeve 20 is retracted toward the proximal end side of the coupler body 10 when the sleeve 20 is advanced toward the distal end of the coupler body 10, The safety ring 50 is disposed at a position deviated from the locking ball 30. [ A space is secured between the outer circumferential surface of the safety ring 50 and the inner circumferential surface of the sleeve 20 so that the safety ring 50 can be opened.

The safety ring (50) has a safety break cut (52). The safety fracture cut-away portion 52 has a groove shape having a predetermined depth from one surface of the safety ring 50 to the other surface. The safety ring (50) is provided with a ring connecting piece (54) by a safety break cut (52). The ring connecting piece 54 is a portion connected to the safety break cut portion 52 at a predetermined thickness. Both end portions of the ring connecting piece 54 are connected to both end portions of the ring body formed by the safety break cut portion 52. At this time, the safety break cut portion 52 has a columnar end. The end portion means an end facing the entry end of the groove-shaped safety break-off portion 52. The end of the safety break-off portion 52 has a columnar shape. The safety break cut portion 52 and the ring connection piece 54 can be formed by cutting the safety ring 50 from one side to the other side by a predetermined depth by a circular cutter (circular cutter rotating at a high speed). The end of the ring connecting piece 54 is formed into a columnar shape by cutting a predetermined depth from one surface of the safety ring 50 to the other surface by a circular cutter. By forming the safety break cut portion 52 and the ring connection piece 54 with the circular cutter, the machining operation can be performed precisely and quickly. When the opening force of the locking ball 30 exceeds a predetermined pressure on the safety ring 50, the safety ring 50 is opened while the ring connecting piece 54 formed by the safety breaking cut portion 52 is cut off.

The present invention further includes a plug (40) coupled into the interior of the coupler body (10) at the tip of the coupler body (10). The plug 40 is provided with a concave groove-shaped locking groove 42 on the outer circumferential surface thereof. When the plug 40 comes into the interior of the coupler body 10, the valve 17 is moved to the position where the coupler body 10 is in contact with the packing PK provided at the tip end portion of the valve 17, A part of the distal end side of the plug 40 enters the valve 17 and at the same time the locking ball 30 provided on the coupler body 10 enters the locking groove 42 of the plug 40 And the safety ring 50 coupled to the inside of the sleeve 20 is disposed outside the locking ball 30 so that the plug 40 is connected to the coupler body 10 by the locking ball 30 Lt; / RTI > At this time, the coupling sleeve portion of the plug 40 is provided with a jaw, and a coupling medium hose or the like is inserted into the coupling sleeve portion of the plug 40.

The safety coupler according to the present invention having the above-described configuration is mainly used for connecting a safety helmet to be worn by a worker to an external oxygen supply device. A hose is connected to the plug 40 coupled to the distal end of the coupler body 10 and the nipple 16 coupled to the proximal end of the coupler body 10, When the plug 40 is connected to the coupler body 10, the valve 17 inside the coupler body 10 is opened and oxygen is supplied to the safety helmet worn by the operator It becomes a state that can be.

The coupling mode in which the plug 40 is separated from the coupler body 10 of the safety coupler of the present invention and the coupling mode in which the plug 40 is coupled to the coupler body 10 will be described below.

<Non-connection mode>

In the unconnected mode, the sleeve 20 is pulled toward the proximal end of the coupler body 10. The elastic body EL interposed between the washer 24 of the sleeve 20 and the outer peripheral edge of the coupler body 10 is compressed in a state in which the sleeve 20 is retreated toward the proximal end of the coupler body 10 . That is, the elastic body EL that elastically urges the sleeve 20 to the front end of the coupler body 10 is compressed and retains the elastic force.

The valve 17 is advanced and the locking ball 30 protrudes from the ball hole 12 of the coupler body 10 by the valve 17 advancing toward the front end of the coupler body 10 The sleeve 20 is retained by the locking ball 30 and is retracted backward (that is, in a state in which the sleeve 20 is retracted toward the proximal end of the coupler body 10), since the sleeve 20 is hooked in front of the ball catching portion 32 of the inner circumferential surface of the sleeve 20, ). At this time, the valve 17 is elastically supported by the valve elastic body EL from behind, and the valve 17 causes the locking ball 30 to be urged by the elastic force of the valve elastic body EL, The locking bail 30 can be firmly retained in the ball catching portion 32 of the sleeve 20 unless the valve 17 is pushed backward, have.

The safety ring 50 is retracted to the rear of the coupler body 10 together with the sleeve 20 so that the safety ring 50 is not disposed outside the locking ball 30 of the coupler body 10 And is out of the outer side of the locking ball 30.

<Connection mode>

When the plug 40 is pushed inside the coupler body 10 (inside the front end of the coupler body 10) in the connected mode, the valve 17 is moved backward (that is, When the valve 17 is depressed, the valve elastic body EL is compressed to have an elastic restoring force, and a locking groove-shaped locking groove (not shown) formed on the outer peripheral surface of the plug 40 The locking bar 30 comes into a position facing the locking ball 30 provided in the ball coupling hole of the coupler body 10 so that the locking ball 30 enters the locking groove 42 of the outer peripheral surface of the plug 40, The sleeve 20 advances elastically toward the distal end portion of the coupler body 10 by the elastic restoring lock of the elastic body (EL) 36 which has been compressed. That is, the elastic member (EL) 36 which has been compressed is unfolded so that the sleeve 20 advances to the distal end portion of the coupler body 10 by the elastic force and the safety ring 50 provided inside the sleeve 20 And advances to the distal end of the coupler body 10. [

When the sleeve 20 and the safety ring 50 are advanced to the distal end of the coupler body 10, the safety ring 50 is disposed outside the locking ball 30, And the locking groove 42 of the locking member 42 is maintained in the engaged state.

The valve 17 is retracted by the plug 40 so that the rear end of the valve 17 is spaced apart from the packing PK provided inside the coupler body 10, The valve hole 17a is communicated with the inner space of the coupler body 10 and the tip end and the base end of the coupler body 10. [ That is, when the valve 17 is pushed back by the plug 40, the valve can be opened.

Since the safety helmet and the hoses provided in the oxygen supply device are connected to the plug 40 and the nipple 16 respectively coupled to the distal end portion and the proximal end portion of the coupler body 10, When the valve is opened, the oxygen supplied from the oxygen supply device may enter the internal space of the valve 17 and may be discharged through the valve hole 17a and supplied to the safety helmet.

The safety ring 50 supports the locking ball 30 from the outside to maintain the connection state between the plug 40 and the coupler body 10 in the connection mode, (In this case, the pressure above the specified pressure means that when the worker hurts at a place as high as the tanker tank, the hose wrapped around the neck means the force to tighten the neck to such a degree as to break the neck) Since the ring 50 is broken and the locking ball 30 is quickly released from the outer circumferential surface locking groove 42 of the plug 40 so that the plug 40 can be separated from the coupler body 10, This is a key feature of being able to prevent it.

The present invention is mainly used as a safety coupler for connecting an oxygen supply device and a safety helmet to supply oxygen to a safety helmet when a safety helmet is to be worn and operated, such as in a large oil tank with a large amount of toxic gas. The safety coupler of the present invention prevents a safety accident by the breakage of the safety ring 50 as follows. For convenience, the safety coupler of the present invention is used in a large oil tanker.

Since the safety helmet and the oxygen supply device are connected to each other by the operator through the safety coupler of the present invention, the operator descends the ladder provided inside the large oil tanker while oxygen is supplied from the oxygen supply device to the safety helmet And to clean the inside of the tanker.

At this time, when the worker slips down the ladder and falls, the hose connecting the worker's safety helmet and the oxygen supply device may be wound around the worker's neck. If the worker hoses the hose during the fall, A large impact force acts on the worker's neck due to the worker's weight and gravity (that is, the impact force of the hose tightening the neck with a large force due to the weight and gravity of the worker during the fall).

However, in the present invention, when the hose is wound around the neck of a worker and a large impact force acts on the hose, the plug 40 tries to escape from the coupler body 10 and the plug 40 is moved from the coupler body 10 to the outside The force that the plug 40 pushes causes the locking ball 30 to be pushed outwardly from the center of the coupler body 10 in the outward direction from the center of the coupler body 10 The force of pushing the locking ball 30 against the force larger than the predetermined pressure acts on the ring connecting piece 54 of the safety ring 50 The safety ring 50 is disposed outside the locking ball 30 provided in the coupler body 10 and the safety ring 50 is disposed between the safety ring 50 and the sleeve 20, A spreadable space is secured, so that the safety ring 50 is sufficiently So the control ring connecting pieces 54 are cut off. That is, the safety ring 50 is cut off. 9A shows a state in which the safety ring 50 disposed outside the locking ball 30 is disposed outside the locking ball 30 so that the locking ball 30 enters the locking groove 42 of the plug 40 (B) shows a state in which the safety ring (30) is lifted from the center of the coupler body (10) in an outward direction by an excessively large force, (50) is broken.

As described above, when the safety ring 50 is broken, the locking ball 30 is disengaged from the locking groove 42 of the plug 40, and the locking ball 30 is disengaged from the locking groove 42 of the plug 40 The plug 40 is quickly separated from the coupler body 10, so that the hose does not wind on the neck of the worker even when the worker falls down.

The plug 40 enters the inside of the coupler body 10 so that the locking ball 30 enters the locking groove 42 provided on the outer circumferential surface of the plug 40 and the locking ball 30 enters the outer side The plug 40 is retained in the state of being connected to the coupler body 10 during a normal operation so that the operator is safe The operator can work while being supplied with oxygen by the helmet. When the operator slips the foot from the stairs of the tanker tank and falls in a state where the hose is wound around the neck of the worker, And a large force (in this case, a large force means a force in which gravity and weight are added when the operator falls) acts to pull the plug 40 out of the coupler body 10 and pull the plug 40 out of the coupler body 10, 30) is larger than the normal case A larger force (a force for opening the safety ring 50) acts on the safety ring 50 as compared with the normal state while the safety ring 50 is extended toward the outer side of the body 10, A portion of the ring connecting piece 54 of the safety ring 50 is broken and the safety ring 50 is broken so that the safety ring 50 It is possible to prevent a case where a large force (a force enough to break the neck of the worker) acts on the neck of the worker due to the plug 40 being pulled out.

Therefore, the present invention has an effect of preventing a very serious safety accident, in which the hose is wound around the neck of the worker, even if the worker falls in the oil tanker tank, and the neck of the worker is broken. As described above, the safety coupler of the present invention is not disclosed so far, meaning that it is very significant in that it can keep the safety of the operator when working in a high place like a large oil tanker.

The specific embodiments of the present invention have been described above. It is to be understood, however, that the scope and spirit of the present invention is not limited to these specific embodiments, and that various modifications and changes may be made without departing from the spirit of the present invention. If you have, you will understand.

Therefore, it should be understood that the above-described embodiments are provided so that those skilled in the art can fully understand the scope of the present invention. Therefore, it should be understood that the embodiments are to be considered in all respects as illustrative and not restrictive, The invention is only defined by the scope of the claims.

10. Coupler body 16. Nipple
20. Sleeve 24. Washer
30. The locking ball 32,
40. Plug 42. Locking groove
50. Safety ring 52. Safe fracture cutout
54. Ring connecting piece

Claims (5)

A coupler body (10);
A sleeve 20 slidably coupled to a distal end side outer peripheral surface of the coupler body 10;
A locking ball 30 coupled to a ball hole 12 penetrating the inner and outer peripheral surfaces of the coupler body 10;
An elastic body (EL) for elastically urging the sleeve (20) to advance toward the distal end side of the coupler body (10);
(50) is provided on the outer circumferential surface of the coupler body (10) so as to secure a space between the outer circumferential surface of the sleeve (20) and the inner circumferential surface of the sleeve (20) And a safety ring (50)
Wherein the safety ring (50) is formed with the ring connecting piece (54) by the safety break cut portion (52).
The method according to claim 1,
A valve (17) provided in an inner space of the coupler body (10) for opening and closing the inner space of the coupler body (10);
And a valve elastic body (EL) for urging the valve (17) and closing the internal space portion of the coupler body (10) by the valve (17).
delete The method according to claim 1,
Further comprising a plug (40) connected to the coupler body (10) and maintained in a connected state by the locking ball (30).
The method according to claim 1,
A washer 24 is provided in the sleeve 20 so as to face the ball catching portion 32 and a ball catching portion 32 protrudes inside the sleeve 20, And the safety ring (50) is disposed between the ball catching portions (32).
KR1020150174636A 2015-12-09 2015-12-09 Safety coupler KR101831706B1 (en)

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KR101831706B1 true KR101831706B1 (en) 2018-02-23

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KR102111086B1 (en) * 2019-01-11 2020-05-20 주식회사 서우이엔지 Direct handline nozzle

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KR102051587B1 (en) * 2017-11-02 2019-12-03 김윤립 A large-area large-area spraying device connected with a nozzle-integrated sprayer
KR102490042B1 (en) * 2020-12-10 2023-01-18 주식회사 제이티 Push-Pull Receptacle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102111086B1 (en) * 2019-01-11 2020-05-20 주식회사 서우이엔지 Direct handline nozzle

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