KR102583372B1 - Coupling for hose twist prevention with enhanced sealing - Google Patents

Abstract

The present invention relates to a coupling for preventing hose twisting with reinforced airtightness. The moment a fluid such as pressurized liquid or gas is supplied through the hose, the twisted state of the hose due to the pressure is quickly prevented by rotation at the coupling portion. It has the effect of improving sealability as well as being able to be released.
The present invention for realizing this includes an inner tube (10) to which the end of the hose is connected and fixed, an outer tube (20) provided in a form surrounding the outside of the inner tube (10), and the inner tube (10). In the hose twist prevention coupling, which includes a separation prevention pipe (30) that is connected and fixed to the other side of the outer pipe (20) by a fixing means to prevent separation, the outer peripheral surface of the inner pipe (10) and On the inner peripheral surface of the outer tube (20), opposing parts form an inclined surface (g) at a certain angle, so that the inner tube (10) is caught; The inner tube (10) is characterized in that it is provided with packing (P) on the outside of the outer tube (20) to improve sealing of the gap between the outer tube (20) or the separation prevention tube (30).

Description

Coupling for hose twist prevention with enhanced sealing}

The present invention relates to a hose twist prevention coupling, and more specifically, to a hose twist prevention coupling with enhanced sealing that prevents water leakage and the inflow of foreign substances while automatically releasing the twisted portion at the coupling connection area when using the hose. It's about coupling.

In general, hoses are used for supplying and spraying fluids such as water and gas in various fields such as agricultural, industrial, and firefighting purposes.

These hoses are not only subject to kinks during manufacturing, but are also rolled up and stored in storage boxes, so when the hoses are unfolded, twists inevitably occur.

For this purpose, the fire hose twist prevention connector in Registered Patent No. 1331060 (November 13, 2013) allows relative rotational movement between the female connector and the male connector between the inner groove of the female connector and the outer groove of the male connector, which are formed front and rear. A configuration has been proposed in which the intervening portion is interposed and the packing seat portion is formed to protrude inward on the inner peripheral surface of the arm connector.

At this time, the intervening part is made of a ball or snap ring, the packing seat part is formed in the shape of a washer, and an O-ring is installed between the rear end of the male connector and the outer peripheral groove to prevent the fire hose from being twisted.

However, in the prior art, the female connector and the male connector are connected by an intervening part such as a ball or snap ring so that relative rotation is free, but an O-ring is simply inserted between the female connector and the male connector for sealing to prevent fire fighting. The male connector to which the hose is connected is connected so that relative rotation is possible with respect to the female connector along with the hose. When the male connector is rotated relative to the female connector to unwind the twist, the rotational force of the male connector is also transmitted to the female connector, causing a problem in that the female connector is not easy to handle in the process of untangling the hose.

Republic of Korea Patent Registration No. 2372821 (registered on March 4, 2022) Republic of Korea Patent Registration No. 1882799 (registered on July 23, 2018)

The present invention was proposed to solve the above-described conventional problems, and is designed to prevent hose twisting by making it easier to untwist the hose and improving sealability to prevent fluid leakage through gaps between internal parts. The purpose is to provide a coupling structure.

The present invention for achieving the above object includes an inner tube in which the end of the hose is connected and fixed, an outer tube provided in a form surrounding the outside of the inner tube, and fixed to the other side of the outer tube to prevent the inner tube from being separated. In the hose twist prevention coupling, which is configured to include a separation prevention pipe that is connected and fixed by means, opposing portions on the outer peripheral surface of the inner pipe and the inner peripheral surface of the outer pipe form an inclined surface at a certain angle to prevent the inner pipe from getting caught. The action takes place; The outer side of the inner tube is characterized in that packing is provided to improve sealing of the gap between the outer tube and the separation prevention tube.

The coupling for connecting a hose of the present invention allows the twisted state of the hose to be quickly released by rotation at the coupling portion due to the pressure at the moment when fluid such as pressurized liquid or gas is supplied through the hose. Together, it has the effect of improving airtightness.

1 is a cross-sectional view of a hose connection coupling in a separated state according to a first embodiment of the present invention.
Figure 2 is an exploded cross-sectional view of one coupling part in the present invention.
Figure 3 is an exploded side view of one coupling part in the present invention.
Figure 4 is an enlarged view of the coupling locking portion in the present invention.
Figure 5 is a detailed cross-sectional view of the watertight portion of the coupling in the present invention.
Figure 6 is a cross-sectional detailed view of the watertight portion of the coupling according to the second embodiment of the present invention.
Figure 7 is an enlarged cross-sectional view of the watertight portion of the coupling according to the third embodiment of the present invention.
Figure 8 is an enlarged cross-sectional view of the watertight portion according to the fourth embodiment of the present invention.
Figure 9 is an enlarged view of the main packing portion in the fourth embodiment of the present invention.
Figure 10 is an enlarged cross-sectional view of the watertight portion according to the fifth embodiment of the present invention.
Figure 11 is an enlarged cross-sectional view of the watertight portion according to the sixth embodiment of the present invention.
Figure 12 is an enlarged cross-sectional view of the watertight portion according to the seventh embodiment of the present invention.
Figure 13 is an enlarged cross-sectional view of the watertight portion according to the eighth embodiment of the present invention.
Figure 14 is an enlarged cross-sectional view of the watertight portion according to the ninth embodiment of the present invention.
15 and 16 are main structural diagrams according to the tenth embodiment of the present invention.
Figure 17 is a cross-sectional view of the main part according to the 11th embodiment of the present invention.
18 and 19 are cross-sectional structural diagrams according to the twelfth embodiment of the present invention.
Figure 20 is a cross-sectional structural diagram according to the 13th embodiment of the present invention.

Hereinafter, specific embodiments of the present invention will be examined in detail with reference to the accompanying drawings.

Embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. This example is provided to more completely explain the present invention to those with average knowledge in the art.

Accordingly, the shapes of components expressed in the drawings may be exaggerated to emphasize a clearer description. It should be noted that the same configuration may be indicated by the same reference numeral in each drawing. Additionally, detailed descriptions of the functions and configurations of known technologies that are judged to unnecessarily obscure the gist of the present invention may be omitted.

First, the coupling structure for preventing hose twisting according to the first embodiment of the present invention will be examined through FIGS. 1 to 5 as follows.

The hose coupling in this embodiment includes an inner tube 10 to which the end of the hose 70 is connected and fixed, an outer tube 20 that engages on one side of the inner tube 10, and the inner tube 70. In order to prevent the separation of (10), a typical configuration includes a separation prevention pipe (30) that is connected and fixed to the other side of the outer pipe (20) by a fixing means.

At this time, the fixing means in this embodiment consists of a locking protrusion (22) integrally formed with the outer tube (20) and a locking protrusion (32) protruding from the outer peripheral surface of the corresponding separation prevention tube (30). However, a locking protrusion 22' is provided at the front end of the locking protrusion 22 and extends in an "L" shape, and a locking groove 32' is formed at the front end of the locking protrusion 32.

In addition, when locking by the locking protrusion 22' at the tip of the locking protrusion 22 and the locking groove 32' at the tip of the locking protrusion 32, there is a gap between the external tube 20 and the separation prevention tube 30. A gasket (ga) is provided to prevent leakage of internal fluid by filling the gap. The configuration of the locking protrusion 22 and the locking protrusion 32 can be implemented selectively not only in the hose connection direction but also in the male and female coupling connection direction.

Meanwhile, opposing parts of the outer peripheral surface of the inner tube 10 and the inner peripheral surface of the outer tube 20 form an inclined surface (g) at a certain angle, so that the inner tube 10 is caught, and the inclined surface (g) To improve lubricity, lubricant coating can be done with PTFE (Teflon), graphite, molybdenum sulfide, etc.

It can be seen that a ring-shaped packing (P) is provided on the outside of the inner tube (10) to improve sealing of the gap between the outer tube (20) or the separation prevention tube (30).

In particular, Figure 5 shows a plurality of packing (P) positions, but in reality, it can be selectively placed at one or more of them, and the packing (P) is not only a circular packing with a circular cross-section, but also a triangular cross-section or a triangular cross-section. Slanted surface packing may be a polygon such as a square or pentagon with one or more edges inclined. The packing (P) may be made of synthetic rubber, plastic, metal, or a hybrid material thereof with good lubricity, or may be lubricated with PTFE (Teflon), graphite, molybdenum sulfide, etc. to improve surface lubricity.

In addition, the separation prevention pipe 30 is formed with a male thread portion 35 and a female thread portion 36 to enable mutual screw fastening.

Let's look at the effect of using the hose twist prevention coupling of the present invention, which has such a configuration.

The coupling of the present invention has a symmetrical structure that is fixed to the distal ends of both hoses 70 for connection of the hose 70, so that the connection work of the hose 70 can be performed quickly.

That is, as shown in FIG. 1, hoses 70 are connected to the couplings on both sides. In this case, the hoses 70 on both sides have uneven portions (not shown) formed at the ends of the inner tube 10, respectively. It is inserted into the hose, and in order to prevent it from coming off, an expansion ring (not shown) is expanded on the inner surface of the hose and one end of the hose is pressed against the uneven part, so that one end of the hose (70) and the inner tube (10) are fastened and fixed to form an integrated connection structure. is achieved.

In addition, the inner tube 10 has a structure in which it is supported so that it can rotate while being prevented from being separated by the catching action of the inclined surface g and the separation prevention tube 30 within the outer tube 20.

At this time, a binding and fixing action can be achieved between the outer tube 20 and the separation prevention tube 30 according to the protruding structure of the locking protrusion 22 and the stopping protrusion 32.

In particular, the locking protrusion 22 is provided with a locking protrusion 22' bent at a right angle at the distal end, and the locking protrusion 22' and the locking groove 32' are locked in a mutually engaged state. can be maintained.

In addition, the configuration of the locking protrusion 22 and the locking protrusion 32 can be selectively implemented not only in the hose connection direction but also in the male and female coupling connection direction.

In this state, even if the hose 70 is pulled out in a twisted state, the twisted state is naturally released when fluid such as pressurized liquid or gas is supplied. At this time, the outer pipe 20 and the separation prevention pipe 30 are fixed. While maintaining this state, the inner tube (10) rotates together with the hose (70).

In particular, when the internal inclined surface (g) structure is formed, the voltage force acting in the longitudinal direction of the hose 70 is separated into a force acting perpendicular to the inclined surface (g) and a force acting parallel to the inclined surface, thereby significantly reducing the friction force. As a result, the inner tube 10 and the outer tube 20 can rotate smoothly on the inclined surface (g). Additionally, the inclined surface (g) of the inner tube (10) is adjusted to the outer tube (20) due to the internal pressure of the hose. By inserting and sealing the hose into the inclined plane, it is possible to reduce or block gas or liquid leakage inside the hose, and it is also possible to reduce or eliminate seals.

Therefore, the present invention has the effect that the twisted state of the hose can be quickly released by rotation at the coupling portion due to the pressure at the moment when fluid such as pressurized liquid or gas is supplied through the hose.

Meanwhile, Figure 6 shows the configuration according to the second embodiment of the present invention, where the opposing portions on the outer peripheral surface of the inner tube 10 and the inner peripheral surface of the outer tube 20 form a curvature surface h of a certain curvature. A locking action is performed on the inner tube (10), and a packing (P) is provided on the outside of the inner tube (10) to improve sealing in the gap between the outer tube (20) or the separation prevention tube (30). You can check that it has happened.

In particular, a gasket ( ga) is provided.

Meanwhile, in order to improve the lubricity of the curved surface (h), the surface may be lubricated with PTFE (Teflon), graphite, molybdenum sulfide, etc.

When this configuration is achieved, the engaging portion between the inner tube 10 and the outer tube 20 is shaped as a curved surface (h) rather than an inclined surface (g), so the contact area between them increases, preventing twisting. During operation, the friction force is distributed between each other and the lubrication of the curved surface is improved, allowing the twisted hose to be quickly unraveled at the same time as the fluid inside the hose is supplied.

In addition, Figure 7 shows the configuration according to the third embodiment of the present invention, in which the end of the hose is connected and fixed to the inner tube 10, and the inner tube 10 is vertically positioned so that a locking action can be performed on one side. A configuration comprising an outer tube 20 provided with a vertical surface in contact with the inner tube 10 and a separation prevention tube 30 connected and fixed to the other side of the outer tube 20 by a fixing means to prevent the inner tube 10 from breaking away. In the hose twist prevention coupling, a truncated cone pressure ring (80) is formed on the inside of the separation prevention tube (30) to press the tip of the inner tube (10), and the truncated cone pressure ring (80) has an inner circumferential surface. It is provided as an inclined surface (g) at a certain angle, and the outer peripheral surface of the corresponding inner tube (10) is also provided as an inclined surface (g) at the same angle, and the separation prevention pipe (30) and the truncated cone pressure ring (80) are provided. An elastic pressing member 90 is inserted between the inner tubes 10 to improve the pressing force, and a packing P is placed on the outside of the inner tube 10 to improve the sealing of the gap between the outer tube 20 or the truncated cone pressure ring 30. This is provided.

Meanwhile, to improve the lubricity of the inclined surface (g) of the truncated cone press ring, the surface can be lubricated with PTFE (Teflon), graphite, molybdenum sulfide, etc.

When this configuration is achieved, the inner tube 10 forms a rotatable structure while being prevented from leaving by the departure prevention tube 30 and the outer tube 20, and at this time, the internal truncated cone pressure ring 80 is used to By pressurizing the inclined surface of the pipe 10, rotation and sealing properties are improved.

In particular, the elastic action of the elastic pressing member 90 is applied to the truncated cone pressing ring 80, thereby providing the advantage that airtightness can be maximized.

In addition, Figures 8 and 9 show the configuration according to the fourth embodiment of the present invention, which includes an inner tube 10 where the end of the hose is connected and fixed, and an external tube that engages on one side of the inner tube 10. A hose twist prevention couple comprising a pipe 20 and a separation prevention pipe 30 that is connected and fixed to the other side of the outer pipe 20 by a fixing means to prevent the inner pipe 10 from coming away. In the ring, a truncated cone pressing ring 80 is formed on the inside of the outer tube 20 to press the tip of the inner tube 10, and the truncated cone pressing ring 80 has an inner circumferential surface of a certain curvature (h). ), and the outer peripheral surface of the corresponding inner tube (10) is also provided with a curvature surface (h) of the same shape, and there is elasticity between the outer tube (20) and the truncated cone pressure ring (80) to improve the pressing force. A pressure member 90 is inserted, and on the outside of the inner tube 10, a packing (P) is provided to improve sealing in the gap between the outer tube 20, the separation prevention tube 30, or the truncated cone pressure ring 80. This is optionally provided.

In particular, the packing (P) has a symmetrical shape or It may be provided in a triangular cross-sectional shape forming an asymmetrical inclined surface.

In addition, the packing (P) is the inner surface of the inner tube 10 and the inner surface of the outer tube 20, or the inner surface of the inner tube 10 and the inner surface of the separation prevention tube 30 as shown in FIG. It can be located in the gap of and is provided closest to the central axis of rotation of the inner tube 10, so the twist can be easily unraveled due to low energy consumption due to friction, and the amount of packing wear can be minimized.

In addition, Figure 10 shows the configuration according to the fifth embodiment of the present invention, in which the end of the hose is connected and fixed to the inner tube 10, and the inner tube 10 is vertically positioned so that a locking action can be performed on one side. A configuration comprising an outer tube 20 provided with a vertical surface in contact with the inner tube 10 and a separation prevention tube 30 connected and fixed to the other side of the outer tube 20 by a fixing means to prevent the inner tube 10 from breaking away. In the coupling for preventing twisting of the hose, there is a rotation guide member 40 on the vertical surface of the separation prevention tube 30 and the inner tube 10 to reduce friction so that the inner tube 10 can be easily rotated. However, the rotation guide member 40 is provided in a ring shape or a plurality of ball shapes, and the separation prevention pipe 30 and the inner pipe 10 are provided with a ring guide so that the rotation guide member 40 can be seated. Grooves 31 and 11 (or ball guide grooves) are formed, respectively, and packing P is provided on the outside of the inner tube 10 in a gap between the inner tube 10 and the outer tube 20 to improve sealing.

Additionally, in order to improve the lubricity of the rotation guide member 40 and the ring guide grooves 31 and 11, the surface may be lubricated with PTFE (Teflon), graphite, molybdenum sulfide, etc.

When this configuration is achieved, the inner tube 10 is prevented from leaving within the outer tube 20 by the breakaway prevention tube 30, and the inner tube 10 has a friction area with the breakaway prevention tube 30. Since it has a structure supported to enable rotation by the rotation guide member 40, the rotation movement of the inner tube 10 is more smooth.

In addition, Figure 11 shows the configuration according to the sixth embodiment of the present invention, in which the end of the hose is connected and fixed to the inner tube 10, and the inner tube 10 is vertically positioned so that a locking action can be performed on one side. An outer tube 20 provided with a vertical surface in contact with the inner tube 10, and a separation prevention tube connected and fixed by a fixing pin 24 as a fixing means on the other side of the outer tube 20 to prevent separation of the inner tube 10 ( 30), in the hose twist prevention coupling, the vertical surface of the outer tube 20 and the inner tube 10 is provided with a rotation guide to reduce friction so that the inner tube 10 can be easily rotated. A member 40 is provided, and the rotation guide member 40 is provided in a ring shape or a plurality of ball shapes, and includes an outer tube 20 and an inner tube 10 so that the rotation guide member 40 can be seated. ) are formed with ring guide grooves 21 and 11 (or ball guide grooves), respectively, and packing (P) is provided on the outside of the inner tube 10 to improve sealing of the gap between the inner tube 10 and the outer tube 20. .

When this configuration is achieved, the advantage is that the inner tube 10 can be rotated more smoothly by the rotation guide member 40 provided at the engaging portion between the inner tube 10 and the outer tube 20. It will appear.

In addition, the packing (P) has the advantage of improved fluid leak prevention function and reduced friction, allowing for smooth rotation.

In addition, Figure 12 shows the configuration according to the seventh embodiment of the present invention, and the contact surface between the separation prevention tube 30 and the inner tube 10 reduces friction so that the inner tube 10 can be easily rotated. It is provided with a rotation guide member, and the rotation guide member is a washer plate 16 that is integrally coupled to the inner tube 10 with a protrusion 16' on one side having a semicircular cross-sectional shape and protruding. A support plate 36' that can be in line contact with the protrusion 16' is formed on the vertical surface of the corresponding separation prevention tube 30, and on the outside of the inner tube 10, an external tube is formed. Packing (P) is provided to improve sealing in the gap between (20).

In particular, a gasket ( ga) is provided.

Meanwhile, in order to improve the lubricity of the protrusion 16' and the washer plate 16, the surfaces may be lubricated with PTFE (Teflon), graphite, molybdenum sulfide, etc.

When this configuration is achieved, the vertical contact surface of the inner tube 10 and the separation prevention tube 30 has a semicircular cross-sectional shape, and line contact by the protruding protrusion 16' is made with the support plate 36'. This allows mutual rotational support to be achieved while minimizing friction.

In particular, the structure of this embodiment has the advantage that the rotation of the inner tube 10 can be smoothly supported without the rotation guide ring 40 due to the configuration of the protrusion 16'.

In addition, Figure 13 shows the configuration according to the eighth embodiment of the present invention. In the area where the inner tube 10 and the separation prevention tube 30 are mutually locked, an inclined surface g inclined at a certain angle is formed. It can be confirmed that packing (P) is provided on the outside of the inner tube (10) to improve sealing in the gap between the outer tube (20) or the gap with the separation prevention tube (30).

In order to improve the lubricity of the inclined surface (g), the surface may be lubricated with PTFE (Teflon), graphite, molybdenum sulfide, etc.

In particular, a gasket ( ga) is provided.

In addition, Figure 14 shows the configuration according to the ninth embodiment of the present invention, and a curvature surface h of a certain curvature is provided at the area where the mutual locking action between the inner tube 10 and the separation prevention tube 30 is performed. It can be seen that packing (P) is provided on the outside of the inner tube (10) to improve sealing in the gap between the outer tube (20) or the separation prevention tube (30).

In order to improve the lubricity of the curved surface (h), the surface may be lubricated with PTFE (Teflon), graphite, molybdenum sulfide, etc.

In particular, a gasket ( ga) is provided.

In addition, Figures 15 and 16 show the tenth embodiment of the present invention, in which the packing (P) has a triangular cross-sectional structure and is located in the gap between the inner surface of the inner tube (10) and the inner surface of the outer tube (20). Since it is located closest to the central axis of rotation of the inner tube (10), the energy consumed due to friction is low, so the twist can be easily unraveled and the amount of packing wear is minimized, and an elastic ring (p') is installed inside the packing (P). ) is composed.

At this time, it can be seen that the elastic ring (p') has a structure in which one end is open so that force can be applied in the expansion direction.

When this configuration is achieved, the expansion pressure force can be transmitted to the packing (P) due to the action of the elastic ring (p'), thereby reducing the gap between the inner tube (10) and the outer tube (20) by the packing (P). This shows the advantage that the airtightness can be further strengthened.

In addition, Figure 17 shows the 11th embodiment of the present invention, in which the packing (P) has a circular cross-sectional structure and is located in the gap between the inner surface of the inner tube (10) and the inner surface of the outer tube (20) By being located closest to the rotation center axis of the pipe (10), the energy consumption due to friction is low, so the twist can be easily unraveled and the amount of packing wear is minimized, while an elastic ring (p') is formed inside the packing (P). do.

At this time, it can be seen that the elastic ring (p') has a structure in which one end is open so that force can be applied in the expansion direction.

When this configuration is achieved, the expansion pressure force can be transmitted to the packing (P) due to the action of the elastic ring (p'), thereby reducing the gap between the inner tube (10) and the outer tube (20) by the packing (P). This shows the advantage that the airtightness can be further strengthened.

In addition, Figures 18 and 19 show a twelfth embodiment of the present invention. In this embodiment, the packing (P) is formed with a variable groove (P1) to enable contraction and expansion, and the variable groove (P1) An elastic plate (P2) is provided to increase the expansion force, and an elastic ring (P') is formed inside the packing (P), and the packing (P) forms an inclined surface at a certain angle and is in close contact with the inclined surface of the packing groove. You can check that.

At this time, it can be seen that the variable groove (P1) is provided with an extension plate (P2) so that the size of the variable groove (P1) can be varied. In addition, in order to prevent fluid leakage through the gap between the horizontal surface portion (P3) of the packing (P) and the inner pipe (10), the outer pipe (20), or the escape prevention pipe (30), the horizontal surface portion (P3) of the packing (P) Sealing can be strengthened by adhering between the inner tube 20 or the separation prevention tube 30 with an adhesive such as urethane, silicone, or epoxy.

In particular, the inclined packing (P) disposed in the gap formed in the vertical direction from the rotation center line of the inner tube (10) is equipped with an elastic ring (P') to prevent the internal fluid from leaking even when the pressure inside the hose is lowered. Because of this, the inclined surface packing (P) can adhere to the packing groove.

In addition, Figure 20 shows the thirteenth embodiment of the present invention, and the inclined surface of the packing (P) is seated on the outer side of the inner tube (10) and the inner surface of the corresponding outer tube (20) or separation prevention tube (30). It can be seen that the packing groove (P#), which is inclined at a certain angle, has been formed to make it possible.

When this configuration is achieved, the packing (P) is in a contracted state during the process of assembling the inner tube (10), and the packing (P) is formed in the inner tube (10) by its own elastic force at the position where assembly is completed. As the inner side of the packing groove (P#) expands, it becomes locked with the outer tube (20).

In addition, although specific embodiments of the present invention have been described and shown above, it is obvious that the anti-twist coupling structure of the present invention can be implemented in various modifications by those skilled in the art.

For example, in the above embodiment, the state in which one rotation guide ring is provided is described and shown, but the number of rotation guide rings can be two or more as needed.

In addition, as shown in FIGS. 21 and 22, the locking protrusion 22' and the locking groove 32' provided on the locking protrusion 22 and the locking protrusion 32 can be maintained in a locked state when locked with each other. It can be formed as an inclined plane at a certain angle.

In addition, in an embodiment of the present invention, an inner tube 10 to which the end of the hose is connected and an outer tube 20 that surrounds the outer surface of the inner tube 10 and rotates relative to the inner tube 10 are configured. However, on the contrary, the end of the hose is connected to the outer tube 20, and the inner tube 10 has a threaded portion that rotates relative to the outer tube 20 inside the outer tube 20 and is connected to another coupling. ) configuration can be implemented selectively.

Therefore, such modified embodiments should not be understood individually from the technical spirit or scope of the present invention, and such modified embodiments should be included within the scope of the appended claims of the present invention.

10: inner tube 20: outer tube
22: locking protrusion 30: separation prevention tube
32: Locking protrusion 35, 25: Male thread part
36: female thread 36': support plate
40: Rotation guide member 60: Anti-jamming ring
70: hose 80: truncated cone pressure ring
90: Elastic pressing member
g: slope h: curved surface
p: packing p': elastic ring
ga: gasket

Claims (17)

delete delete An inner tube (10) to which the end of the hose is connected and fixed, an outer tube (20) provided with a vertical surface in vertical contact so that a locking action can be performed on one side of the inner tube (10), and the inner tube (10) In the hose twist prevention coupling, which includes a separation prevention pipe (30) that is connected and fixed to the other side of the external pipe (20) by a fixing means to prevent separation,
Inside the separation prevention tube 30, a truncated cone pressure ring 80 is formed to press the tip of the inner tube 10, and the inner circumferential surface of the truncated cone pressure ring 80 forms an inclined surface at a certain angle (g). is provided;
The outer peripheral surface of the corresponding inner tube 10 is also provided with an inclined surface (g) at the same angle;
An elastic pressing member 90 is inserted between the separation prevention pipe 30 and the truncated cone pressing ring 80 to improve the pressing force;
A hose twist prevention coupling with enhanced sealability, characterized in that packing (P) is provided on the outside of the inner tube (10) to improve sealability in the gap between the outer tube (20) or the truncated cone pressure ring (30). An inner tube (10) to which the end of the hose is connected and fixed, an outer tube (20) that is caught on one side of the inner tube (10), and an outer tube (20) to prevent the inner tube (10) from being separated. ) In the coupling for preventing hose twisting, which includes a separation prevention pipe (30) connected and fixed by a fixing means on the other side of the hose,
Inside the outer tube 20, a truncated cone pressure ring 80 is formed to press the tip of the inner tube 10, and the inner circumferential surface of the truncated cone pressure ring 80 forms a curvature h of a certain curvature. is provided;
The outer peripheral surface of the corresponding inner tube 10 is also provided with a curved surface h of the same shape;
An elastic pressing member 90 is inserted between the outer tube 20 and the truncated cone pressing ring 80 to improve the pressing force;
Enhanced airtightness is provided on the outside of the inner tube (10) with packing (P) to improve airtightness in the gap between the outer tube (20), the separation prevention tube (30), or the truncated cone pressure ring (80). Coupling to prevent hose twisting. delete delete An inner tube (10) to which the end of the hose is connected and fixed, an outer tube (20) provided with a vertical surface in vertical contact so that a locking action can be performed on one side of the inner tube (10), and the inner tube (10) In the hose twist prevention coupling, which includes a separation prevention pipe (30) that is connected and fixed to the other side of the external pipe (20) by a fixing means to prevent separation,
A rotation guide member is provided on the contact surface of the separation prevention tube 30 and the inner tube 10 to reduce friction so that the inner tube 10 can be easily rotated, and the rotation guide member has a protrusion 16 on one side. ') is composed of a washer plate 16 that is integrally coupled to the inner tube 10 in a protruding state with a semicircular cross-sectional shape;
A support plate 36' that can be in line contact with the protrusion 16' is formed on the vertical surface of the corresponding separation prevention pipe 30;
A coupling for preventing hose twisting with enhanced sealing, characterized in that packing (P) is provided on the outside of the inner tube (10) to improve sealing in the gap between the outer tube (20). delete delete delete delete delete delete delete delete delete delete

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