KR102113691B1 - Connecting device for pressurised hose - Google Patents

Abstract

The present invention relates to a connector for a high pressure hose. According to the connector for a high pressure hose of the present invention, a conical coil for surrounding an outer circumferential surface of a hose is installed to improve a fastening force between the hose and a hose coupling port, and an outer diameter of the conical coil increases toward the hose coupling port to increase a compression force through deformation of the conical oil during compression by a compression nut. Therefore, the fastening force between the hose and the hose coupling port inserted into the hose increases such that a firm fastening force is maintained even at high pressure without using a separate compressor, thereby fundamentally preventing problems such as separation of the hose and leakage of a fluid.

Description

CONNECTING DEVICE FOR PRESSURISED HOSE

The present invention relates to a connector for a high pressure hose, and in detail, to a connector for a high pressure hose that can maintain a strong binding force at a high pressure by simply assembling the components constituting a connector connected to the high pressure hose without using a separate crimp device. It is about.

In general, a high pressure hose is a type of hose used as a passage for smoothly transporting a fluid to a desired place while withstanding the high pressure of a fluid (liquid/gas) flowing in the hose, such as automobiles, construction machinery, hydraulic machinery and paint sprayers. It is manufactured to withstand high pressure in order to transfer high pressure fluid to a desired place in industries such as.

In the high pressure hose, a connection for the high pressure hose is used to connect the hose to the hose, the hose to the pipeline, or the hose to the nozzle. The high-pressure hose connector is used for more convenient interconnection of the object connected to the hose, and a high binding force is required so that the connection portion between them does not come out or the fluid is not leaked from the connection portion.

The high-pressure hose connector is usually provided with a hose insertion portion on which the hose is placed on one side or both sides, the nipple body having a plurality of locking jaws formed on the outer circumferential surface of the hose insertion portion, and the hose is placed on the hose insertion portion of the nipple body. It is composed of a sleeve member that fixes and fixes the hose by pressing it in the hose insertion portion, so that it is connected to the high pressure hose.

However, when the hose is connected to the object using a high-pressure hose connector according to the prior art, the binding force is deteriorated if the sleeve member does not strongly press the hose to the hose insert in the state where the hose is placed in the nipple body's hose insert. Therefore, when an external force is generated, a problem may occur in which the hose is easily displaced from the nipple body to the outside.

Thus, in the related art, the sleeve member is compressed in the axial direction using a crimping device or the like to prevent the nipple body from being displaced from the hose in the outer direction. That is, in the related art, the hose is more strongly compressed by the hose inserting part through a pressing process of a separate sleeve member to prevent the nipple body from escaping from the hose outward.

However, since the crimping device is usually bulky and heavy, it is difficult to transport and store, and there is a hassle that an operator must have a sleeve member and move to a place where the crimping device is stored in order to compress the sleeve member. There is a problem.

KR 20-0434256 Y1, Dec. 12, 2006 KR 20-0351663 Y1, 2004. 05. 18. KR 20-2012-0008422 U, Dec. 10, 2012. KR 20-0336038 Y1, 2003. 12. 03.

Therefore, the present invention has been proposed to solve the problems of the prior art, and by using a simple assembly of the components constituting the connector to be connected to the high-pressure hose without using a separate crimping device maintains a solid binding force at high pressure and the separation of the hose and An object of the present invention is to provide a connector for a high-pressure hose capable of fundamentally preventing fluid leakage and the like.

The present invention according to an aspect for achieving the above object is inserted into the end of the hose is coupled to communicate with the hose, the hose coupling port consisting of a hollow tube formed therein so that the fluid conveyed through the hose is transferred ; It is installed to surround the outer circumferential surface of the one end of the hose, and press the one end of the hose to the center of the hose to press the hose coupling port inserted into the one end of the hose to increase the binding force between the hose and the hose coupling port. A conical coil to increase; And the hose is made of a tubular body so as to be coupled through the inside, the hose coupling port is installed so as to surround the conical coil in the state inserted into one end of the hose, the hose through the conical coil through the hose It provides a connector for a high pressure hose, characterized in that it comprises a pressure nut to pressurize to the center.

Preferably, the conical coil has an inner diameter having the same size, and an outer diameter is made to increase in size toward the hose coupling port, so that the pressing force increases toward the hose coupling port by the pressure applied by the pressure nut when the pressure nut is coupled. It can be characterized by increasing the binding force between the hose and the hose joint by increasing.

Preferably, the conical coil is composed of a plurality of coils, characterized in that spaced apart at regular intervals between each coil so as to press one end of the hose to the center of the hose while being deformed by pressure applied when the pressure nut is coupled. Can be done with

Preferably, the pressing nut has a screw groove formed on one inner circumferential surface, and an insertion groove into which each coil of the conical coil is respectively inserted is formed at an inner circumferential surface between one end and the other end at an interval corresponding to the spacing of each coil. It can be characterized as being.

Preferably, the insertion groove of the pressing nut is formed of a conical structure that gradually increases the inner diameter toward the direction coupled to the pressing nut in response to the conical coil whose outer diameter is gradually increasing, thereby gradually pressing the conical coil to the It can be characterized by improving the binding force and airtightness between the hose and the hose fitting.

Preferably, the hose coupling port is formed integrally with an insertion portion having one end inserted into the inside of one end of the hose to communicate with the hose, a locking groove formed on an outer circumferential surface, and a stepped end with the other end of the insertion portion. It may be characterized in that it comprises a coupling portion is formed with a screw groove.

Preferably, a screw groove formed on an outer circumferential surface of one end of the hose coupling hole is screwed to surround the hose coupling hole, and a screw groove formed on an inner circumferential surface of one end of the pressurizing nut is screwed on the outer circumferential surface of the hose coupling hole. A connecting nut connecting with the pressing nut; The hose coupling hole is formed of a tube body to be inserted through the inside, and the inside of the hose is formed with a fall prevention jaw so that the stepped jaw formed in the hose coupling hole is hung in the direction of the hose, and the hose connecting the hose coupling port to the object to be connected to the hose Connection cap; And a fixing pin inserted into a fixing hole formed at one end of the pressing nut to fix the pressing nut to the connecting nut.

Preferably, the hose connection cap and the connection nut may be characterized in that they are formed to be spaced apart from each other in a state coupled to the hose coupling port.

As described above, according to the connector for a high pressure hose according to the present invention, in order to improve the binding force between the hose and the hose fitting, a conical coil surrounding the outer circumferential surface of the hose is installed, and the outer diameter of the conical coil is connected to the hose fitting. Increasing toward the direction to increase the pressing force through the deformation of the conical coil when pressed by the pressure nut to increase the binding force between the hose and the hose fitting inserted into the hose without using a separate crimping device By maintaining a solid binding force at high pressure, it is possible to fundamentally prevent problems such as separation of the hose and leakage of fluid.

1 is a perspective view showing a connector for a high pressure hose according to an embodiment of the present invention.
Figure 2 is an exploded perspective view of the high-pressure hose connector shown in Figure 1 separated by configuration.
Figure 3 is a view showing a cross-section of the connector for the high-pressure hose shown in Figure 2;
Figure 4 is a cross-sectional view of the high-pressure hose connector shown in Figure 1 cut in the longitudinal direction.
5 is a view showing a state in which the pressure nut is separated to describe the conical coil according to the present invention.
6 to 10 are views showing an assembly process of a high-pressure hose connector according to an embodiment of the present invention.

Advantages and features of the present invention, and methods for achieving them will be clarified with reference to embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various different forms.

In the present specification, this embodiment is provided to make the disclosure of the present invention complete, and to fully inform the scope of the invention to those skilled in the art to which the present invention pertains. And the present invention is only defined by the scope of the claims. Thus, in some embodiments, well-known components, well-known operations, and well-known techniques are not specifically described in order to avoid obscuring the present invention.

In addition, the same reference numerals refer to the same components throughout the specification. In addition, the terms (referred to) used in this specification are for describing the embodiments and are not intended to limit the present invention. In the present specification, the singular form also includes the plural form unless otherwise specified in the phrase. In addition, components and actions recited as'include (or have)' do not exclude the presence or addition of one or more other components and actions.

Unless otherwise defined, all terms (including technical and scientific terms) used in the present specification may be used as meanings commonly understood by those skilled in the art to which the present invention pertains. Also, terms that are defined in a commonly used dictionary are not ideally or excessively interpreted unless they are defined.

Hereinafter, the technical features of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view illustrating a high-pressure hose connector according to an embodiment of the present invention, Figure 2 is an exploded perspective view of the high-pressure hose connector shown in Figure 1 separated by configuration, Figure 3 is in Figure 2 FIG. 4 is a cross-sectional view of the high-pressure hose connector, and FIG. 4 is a cross-sectional view of the high-pressure hose connector shown in FIG.

1 to 4, the connector 10 for a high pressure hose according to an embodiment of the present invention is a hose (1) for transporting a high pressure fluid (liquid or oil, or gas in a gaseous state) It is a connecting device that connects to other hoses, pipelines, or nozzles.

2, the high-pressure hose connector 10 according to an embodiment of the present invention is inserted into the end of the hose 1 is coupled to communicate with the hose 1, the fluid transferred through the hose 1 It includes a hose joint (11) made of a tube formed with a hollow (11a) to be transported.

2 and 3, one end of the hose fitting port 11 is inserted into one end of the hose 1, and includes an insert 111 inserted into the inside of the hose 1, and the insert ( On the outer circumferential surface of 111, a locking groove 111a is formed to be in close contact with the inner circumferential surface of the hose 1.

A tool crimping surface 111b having a flat shape is formed at the end of the insertion portion 111 so as to face each other on the upper and lower sides. The tool crimping surface 111b connects the hose coupling port 11 using a tightening tool (not shown) in a state in which the hose coupling port 11 is penetrated through the connection cap 15 and the connection nut 14. When screwed to (14), it is formed to hold and rotate the hose fitting (11).

And, the hose fitting 11 is formed integrally with the other end of the insertion portion 111 and has an outer diameter larger than the outer diameter of the insertion portion 111, the outer circumferential surface is formed with a screw groove (112a) of the connection nut (14) The second screw groove 14b formed on the inner circumferential surface includes a coupling portion 112 to be screwed.

2 and 3, the hose coupling port 11 is inserted into one end of the hose 1 by pressing one end of the hose 1 to the center of the hose 1 on the outer circumferential surface of the hose 1 Conical coil 12 is installed to close the insertion portion 111 of the airtightness and watertightness.

5 is a view showing a state in which the pressure nut is separated to describe the conical coil according to the present invention.

Referring to Figure 5, the conical coil 12 according to the present invention, the inner diameter surrounding the outer circumferential surface of one end of the hose (1) is formed in the same size, the outer diameter of the hose coupler 11 toward the direction of the size to a certain proportion By increasing the pressure nut 13 to increase the pressing force in the direction of the hose coupling port 11 when the coupling can increase the adhesion between the hose 1 and the hose coupling port (11).

In addition, the interval between each coil 12a of the conical coil 12 is deformed when pressed by the pressure nut 13 and spaced apart at regular intervals to press one end of the hose 1.

2 to 4, in the state that the insertion portion 111 of the hose fitting 11 is inserted into the inside of one end of the hose 1, the pressure nut 13 to surround the outer peripheral surface of one end of the hose 1 Is installed.

The pressing nut 13 is made of a tubular body, as shown in FIG. 3, and presses the conical coil 12 installed to surround the outer circumferential surface of the hose 1 to press it toward the center of the hose 1.

2 and 3, the screw groove 13a is screwed to the first screw groove 14a formed on the outer circumferential surface of one end of the connecting nut 14 on one inner circumferential surface. .

And, as shown in Fig. 3, a plurality of insertion grooves 13b are formed on the inner circumferential surface between the one end and the other end of the pressure nut 13 by pressing and deforming each coil 12a. At this time, each coil 12a of the conical coil 12 may be inserted into each of the insertion grooves 13b.

The spacing between the insertion grooves 13b may be formed at an interval corresponding to the spacing (pitch) of each coil 12a. Then, the insertion groove 13b may be formed of a conical structure in which the inner diameter gradually increases in response to the conical coil 12 as it goes toward the direction coupled to the connection nut 14.

As described above, the press nut 13 has a conical coil 12 whose outer diameter is gradually increased as the insertion groove 13b is formed to a structure in which the inner diameter gradually increases toward the end (the side coupled to the connecting nut 14). ) To improve adhesion and gradually pressurize the conical coil 12 to improve the binding force and airtightness between the hose 1 and the hose fitting 11.

2 and 3, a second screw groove 14b is formed on the inner circumferential surface and screwed into the screw groove 111a formed in the insert 111 of the hose fitting 11, as shown in FIGS. A first screw groove 14a is formed at one end of the outer circumferential surface, and the screw groove 13a of the pressure nut 13 is screwed. Accordingly, the hose coupling port 11 is mutually coupled with the pressure nut 13 via the connection nut 14.

2 and 3, a fixing hole 13c into which the fixing pin 16 is inserted is further formed at one end of the pressing nut 13. The fixing pin 16 is, for example, a tanned bolt, and is inserted into the pressure nut 13 through the fixing hole 13c, and then fixed by pressing the coupling portion between the pressure nut 13 and the connection nut 14 The nut 13 is secondarily fixed so as not to be separated from the connecting nut 14.

The hose connection cap 15 is installed to surround the hose connection port 11 in order to connect the hose 1 to the object to be connected via the hose connection port 11, for example, another hose.

The hose connection cap 15 is made of a tube body so that the hose fitting 11 is inserted therein, and a screw groove 15a may be formed on its inner circumferential surface to be coupled to an external object in a one-touch manner. At this time, the hose connection cap 15 may be formed of a one-touch structure applied to a connection cap connecting a hose to a faucet, for example, to implement a one-touch coupling method.

On the other hand, as shown in Figure 4, it is preferable that the gap between the hose connecting cap 15 and the connecting nut 14 is formed at regular intervals. Through this, when the hose connection cap 15 is coupled to the object in the state where the hose connection cap 15 is assembled, the hose connection cap 15 allows the hose connection port 15 to flow in the longitudinal direction of the hose connection port 11 to connect the hose. The joining workability of the cap 15 can be improved.

In addition, as shown in FIG. 4, the hose connection cap 15 may further include a fall prevention jaw 15b that is bent inward so as to have a small inner diameter at one end, that is, an end facing the connection nut 14.

The falling-out jaw 15b is formed in a bent shape inward, and the stepped portion 11b formed in the connection portion between the insertion portion 111 and the coupling portion 112 of the hose coupling port 11 is caught in the direction of the hose 1 do. Accordingly, the hose coupling port 11 is supported by the stepped portion 11b of the hose coupling port 11 being caught by the fall prevention jaw 15b of the hose connection cap 15 so that it does not deviate in the direction of the hose 1.

6 to 10 are views showing an assembly process of a high pressure hose connector according to an embodiment of the present invention.

Figure 6 shows the process of assembling the hose connection cap 12 to the hose coupling port 11, the hose coupling port 11 is coupled through the interior of the hose connection cap (15). At this time, the stepped portion 11b of the hose coupling port 11 is supported by the fall prevention jaw 15b formed inside the hose connection cap 15.

FIG. 7 shows a process of assembling the connection nut 14 to the hose fitting 11 assembled as shown in FIG. 6, and penetrates the insertion nut 111 of the hose fitting 11 through the connection nut 14. After coupling, the hose coupling tool 11 is rotated while holding the tool pressing surface 111b formed on the insertion section 111 of the hose coupling tool 11 using a tightening tool (not shown), or the connection nut ( 14) is rotated to be screwed to the screw groove 112a formed in the engaging portion 112 of the hose fitting 11 to assemble.

8 shows a process of assembling the hose 1 to the hose fitting 11 assembled as shown in FIG. 7, the inside of one end of the hose 1 to the insert 111 of the hose fitting 11 Insert and assemble. At this time, the hook formed on the outer circumferential surface of the insertion portion 111 by inserting the hose fitting 11 into the inside of the hose 1 until one end of the hose 1 is partially inserted into one side of the connection nut 14 The grooves 111a are all inserted into the inside of the hose 1 to improve adhesion.

FIG. 9 shows a process of assembling the conical coil 12 on the hose 1 assembled as shown in FIG. 8, in the state where the hose 1 is assembled to the insertion portion 111 of the hose fitting 11 Assemble the conical coil 12 so that the insertion portion 111 of the hose fitting 11 surrounds one end of the inserted hose 1.

FIG. 10 shows a process of assembling the pressure nut 13 to the assembled hose 1, as shown in FIG. 9, and is assembled by inserting the pressure nut 13 to surround the conical coil 12. At this time, the screw groove 13a of the pressing nut 13 is screwed to the first screw groove 14a of the connection nut 14.

Thereafter, the fixing pin 16 is inserted into the fixing hole 13c of the pressing nut 13 to fix the pressing nut 13 and the connecting nut 14 for a second time, thereby between the pressing nut 13 and the connecting nut 14 Improves cohesion.

As such, the connector 10 for a high pressure hose according to an embodiment of the present invention is provided with a conical coil 12 surrounding the outer circumferential surface of the hose 1 to improve the binding force between the hose 1 and the hose fitting 11 Then, at this time, the outer diameter of the conical coil 12 is increased to a certain size toward the direction of the hose fitting 11, thereby increasing the compressive force through the deformation of the conical coil 12 when pressed by the pressure nut 13 to increase the hose ( 1) By increasing the binding force between the hose joint (11) inserted into the inside of the hose (1) and maintaining a solid binding force at high pressure without using a separate crimping device, it prevents the hose from escaping and fluid leakage. can do.

As described above, the technical spirit of the present invention has been specifically described in a preferred embodiment, but the above-described preferred embodiment is for the purpose of explanation and not for limitation. As such, a person skilled in the art will understand that various embodiments are possible through a combination of the embodiments of the present invention within the scope of the technical spirit of the present invention.

1: Hose 10: High pressure hose connection port
11: Hose fitting 11a: Hollow
12: conical coil 12a: coil
13: pressure nut 13a: screw groove
13b: Insertion groove 13c: Fixing hole
14: connection nut 15: hose connection cap
16: fixing pin 111: insert
111a: Hanging groove 111b: Tool crimping surface
112: engaging portion 112a: second screw groove

Claims (7)

One end is inserted into the end of the hose (1) is coupled to communicate with the hose (1), the hose coupling port consisting of a hollow (11a) formed inside the tube so that the fluid conveyed through the hose (1) is transferred (11);
The hose coupling port is installed so as to surround the outer circumferential surface of one end of the hose (1), the one end of the hose (1) is pressed into the center of the hose (1) and inserted into the inside of one end of the hose (1) ( 11) pressurizing the conical coil 12 to increase the binding force between the hose 1 and the hose fitting 11;
The hose (1) is made of a tubular body so as to be coupled through the inside, the hose coupling port 11 is installed to surround the conical coil (12) in the state inserted into one end of the hose (1) A pressing nut 13 for urging the hose 1 to the center of the hose 1 via the conical coil 12;
A second screw groove (14b) is formed on the inner circumferential surface to surround the hose fitting (11) and screwed to the screw groove (111a) formed at one end of the hose fitting (11). A screw groove (14a) is formed and the screw groove (13a) formed on the inner circumferential surface of one end of the pressure nut (13) is screwed to connect the hose fitting (11) and the connection nut (14) connecting the pressure nut (13) );
The hose coupling hole 11 is made of a tube body to be inserted through, and the inside is formed with a fall prevention jaw 15b so that the stepped jaw formed in the hose coupling hole 11 is caught in the direction of the hose 1, and the hose (1) a hose connection cap 15 for coupling the hose fitting 11 to the object to be connected;
It includes a fixing pin 16 which is inserted into a fixing hole 13c formed at one end of the pressing nut 13 to fix the pressing nut 13 to the connecting nut 14;
The hose fitting 11 is
An insertion portion 111 having one end inserted into one end of the hose 1 to communicate with the hose 1 and having an engaging groove 111a formed on an outer circumferential surface;
A coupling portion 112 formed integrally with the other end portion and the stepped side of the insertion portion 111 and having a screw groove 112a formed on an outer circumferential surface;
The end portion of the insertion portion 111 includes a tool crimping surface (111b) formed in a flat shape to face each other on the upper and lower sides,
The conical coil 12 is formed to have the same inner diameter, and the outer diameter is made to increase in size as it goes toward the hose fitting 11, which is applied by the pressing nut 13 when the pressure nut 13 is engaged. By pressing, the pressing force increases toward the hose coupling port 11 to increase the binding force between the hose 1 and the hose coupling port 11,
The pressing nut 13 has a screw groove 13a formed on one inner circumferential surface, and an insertion groove 13b into which each coil of the conical coil 12 is inserted, respectively, on the inner circumferential surface between one end and the other end. High pressure hose connector, characterized in that it is formed at an interval corresponding to the spacing of the coil.
delete According to claim 1,
The conical coil 12 is made of a plurality of coils, but each coil is configured to press one end of the hose 1 to the center of the hose 1 while being deformed by pressure applied when the pressure nut 13 is engaged. High pressure hose connector, characterized in that spaced apart at regular intervals.
delete According to claim 1,
The insertion groove 13b of the pressing nut 13 is made of a conical structure in which the inner diameter gradually increases as it goes toward the direction coupled to the pressing nut 13 corresponding to the conical coil 12 whose outer diameter gradually increases. The high-pressure hose connector, characterized in that by gradually pressing the conical coil (12) to improve the binding force and airtightness between the hose (1) and the hose fitting (11).
delete delete

Images