KR20200126133A - Tube Fitting Device - Google Patents

Abstract

A tube fitting device of the present embodiment is a tube fitting device to which a tube is connected and comprises: a fitting member from which a plurality of hooks protrude; and a tube connection device including a tube connection body inserted into a tube and a hook attachment/detachment body extending from the tube connection body and allowing the hooks to be detachably coupled thereto. The hook attachment/detachment body may comprise: a first protrusion along which the hooks passe; a reception groove in which the hooks, which have passed along the first protrusion, are received; and a second protrusion which is formed on the reception groove to be spaced from the first protrusion to divide the reception groove into a primary reception groove and a secondary reception groove and along which the hooks, which are received in the primary reception groove after passing along the first protrusion, pass so as to move to the secondary reception groove. When the hooks are positioned to be received in the secondary reception groove, the fitting member is pressed onto the outer surface of the tube into which the tube connection body is inserted. A slope is formed on one side surface of the reception groove in the circumferential direction, wherein when the fitting member rotates, the hooks received in the secondary reception groove move up to the periphery of the reception groove along the slope while being spaced away therefrom.

Description

Tube Fitting Device

The present invention relates to a tube fitting device, and more particularly, to a tube fitting device to which the tube is connected.

Water treatment devices that process liquid fluids (purification, fermentation, water supply, drainage, etc.) such as water purifiers and beverage makers can connect each of components such as filters, valves, and joints to each other by tubes (or pipes), and these tubes are It is desirable to be easily connected at the time of initial installation, and it is desirable to be simple and easily separated for dismantling or service.

Such a water treatment device may include a tube fitting device for easy attachment and detachment of the tube, and the Korean Utility Model Publication 20-2015-0004551 U (published on December 23, 2015) provides a pipe with simple assembly and improved productivity. A fitting device is disclosed.

The pipe fitting device includes an end cap and a fitting body that are coupled to each other in a snap-fit manner by a hook, a sealing member such as an o-ring that is sandwiched and coupled between the fitting body and the tube, a guide having a tapered portion, and inserted into the tapered portion. It includes a collet having an elastic part and a pressurizing member formed on the inner surface of the elastic part to pressurize the tube. When the tube is moved by water pressure, the pressurizing member can hold the tube surface strongly so that no leakage occurs even at high water pressure. Does not.

However, the pipe fitting device includes a guide, a collet, a sealing member, and a pressure member in addition to the fitting video and end cap, so the number of parts is large and the tube may be moved by hydraulic pressure when used for a long time, so that the pressure member or the tube is worn There is a problem that is easy to become.

Republic of Korea public utility model publication 20-2015-0004551 U (released on December 23, 2015)

An object of the present invention is to provide a tube fitting device in which the number of parts can be minimized and the tube can be easily connected, so that the connection operation of the tube is easy.

Another object of the present invention is to provide a tube fitting device capable of disengaging the fitting member from the tube connector by a simple operation of turning the fitting member.

A tube fitting device according to an embodiment of the present invention is a tube fitting device to which a tube is connected, the fitting member having a plurality of hooks protruding; And a tube connection body inserted into the tube and a hook attachment/detachment body extending from the tube connection body and attaching and detaching the hook. Including, the hook detachable body with a first protrusion over the hook ride; A receiving groove in which a hook crossed over the first protrusion is accommodated; The receiving groove is formed to be spaced apart from the first protrusion to divide the receiving groove into a primary receiving groove and a secondary receiving groove, and after riding over the first protrusion, a hook accommodated in the primary receiving groove receives the second It may include a second protrusion over ride to move to the groove. The fitting member may be compressed to the outer surface of the tube into which the tube connection body is inserted when the hook is at a position to be received in the secondary receiving groove.

On one side of the receiving groove in the circumferential direction, when the fitting member is rotated, the hook accommodated in the secondary receiving groove is opened, and a slope that rises around the receiving groove may be formed.

The slope may be formed to be convex toward the outside.

A radius of curvature of the slope may be smaller than a radius of curvature around the receiving groove.

The length of the secondary receiving groove in the circumferential direction may gradually decrease as the distance from the first protrusion increases.

The other side of the receiving groove in the circumferential direction faces one side of the receiving groove in the circumferential direction in the circumferential direction, and may intersect the bottom surface of the receiving groove.

The receiving groove may be formed in a plurality of the hook detachable body. The receiving groove and the periphery of the receiving groove may be formed alternately along the circumferential direction of the hook attachable and detachable body.

The circumferential length of the second protrusion may be shorter than the circumferential length of the first protrusion.

The fitting member includes a pressing body having a first inner diameter and pressing a portion of the tube surrounding the outer circumference of the tube connecting body, and an extension body having a second inner diameter larger than the first inner diameter and extending from the pressing body. Can include.

The hook may protrude from the end of the extension body in the length direction of the fitting member.

The average diameter of the hook detachable body may be larger than the average diameter of the tube connection body.

According to an embodiment of the present invention, the tube can be crimped-fitted only with the fitting member and the tube connector, so that the number of parts can be minimized, the structure is simple, and the manufacturing cost can be minimized.

In addition, since the hook is pre-fastened to the tube connector, the fitting member is fastened to the tube connector in a one-touch method, making it easy to connect the tube and minimize the time required for the tube connection, so that the tube is connected more quickly. I can.

In addition, the fitting member can be disengaged from the tube connector with a simple operation of rotating the fitting member, and the tube can be crimped and released with a simple operation of sliding the fitting member around the receiving groove, making the tube separation work simple and It can be done quickly.

In addition, the slope is formed to be convex toward the outside, so that the hook received in the receiving groove can be gently seated around the receiving groove.

In addition, the tube connector and the fitting member are not replaced, and only the tube can be easily replaced, so that service costs can be reduced.

1 is a view showing an example of a water purifier to which a tube fitting device according to an embodiment of the present invention is applied;
2 is a perspective view of a tube connector according to an embodiment of the present invention,
3 is a cross-sectional view of a fitting member before being fastened with a tube connector according to an embodiment of the present invention;
Figure 4 is a side view when the fitting member shown in Figure 3 is pre-fastened to the tube connector,
5 is a cross-sectional view when the fitting member shown in FIG. 3 is pre-fastened to the tube connector;
6 is a cross-sectional view taken along line A-A' of FIG. 4;
7 is a cross-sectional view when a tube is connected to the tube connector shown in FIG. 5;
8 is a side view when the fitting member shown in FIG. 6 is fastened to the tube connector;
9 is a cross-sectional view when the fitting member shown in FIG. 6 is fastened to the tube connector;
10 is a cross-sectional view of a hook of a fitting member according to an embodiment of the present invention when it is moved around a receiving groove;
11 is a cross-sectional view of a hook of a fitting member according to an embodiment of the present invention when retracted from the periphery of a receiving groove.

Hereinafter, specific embodiments of the present invention will be described in detail together with the drawings.

1 is a diagram illustrating an example of a water purifier to which a tube fitting device according to an embodiment of the present invention is applied.

The tube fitting device 1 of the present embodiment may constitute a part of a water treatment device such as a water purifier. A water treatment device such as a water purifier may include a component to which the tube 2 is connected. Water treatment devices include filters (3) such as water filters, valves (4) such as water supply valves, joints (5) such as straight pipes, elbows, Y pipes or T pipes, and parts (3) (4) (5) such as pumps. ), and the tube fitting device may form part of these parts 3, 4, 5 or be connected to these parts 3, 4, 5.

The tube 2 can be connected to the tube fitting device 1, and the inner flow path of the parts 3, 4, and 5 of the water treatment device and the inner flow path of the tube 2 are through the tube fitting device 1 Can be connected.

The tube fitting device 1 is preferably configured to facilitate mounting of the tube 2 or replacement of the tube 2.

The tube fitting device 1 may comprise a fitting member 6 and a tube connector 8.

The fitting member 6 can fix the tube 2 to the tube connector 8.

The fitting member 6 may be detachably coupled to the tube connector 8. The fitting member 6 may be pre-fastened (ie, pre-fastened) to the tube connector 8 before connecting the tube 2 to the tube connector 8. The fitting member 6 may be fastened to the tube connector 8 after the tube 2 is connected to the tube connector 8.

When the fitting member 6 is fastened to the tube connector 8, the fitting member 6 can press the tube 2 to the tube connector 8, and the tube 2 is connected to the fitting member 8 Between the tube connector 8 may be in close contact with each of the fitting member 8 and the tube connector (8).

The tube connector (8) is connected by actually contacting the tube (2), and is composed of a separate fastening component mounted on the parts (3) (4) (5) of the water treatment device or the parts (3) of the water treatment device (3). It may be part of )(4)(5).

An example of the tube connector 8 is that after being manufactured separately from the parts (3)(4)(5) of the water treatment device, the fastener formed on the tube connector (9) is the part (3)(4)(5) of the water treatment device. It is possible to be bonded to or fastened with a fastening member such as a screw or press-fit.

Another example of the tube connector 8 is a part of the parts constituting the parts 3, 4 and 5 of the water treatment equipment, and it is also possible to protrude from such parts.

The tube fitting device 1 can reliably maintain the connection state of the tube 2 and the tube connector 8 without a separate sealing member such as an O-ring, and a liquid fluid such as water is the tube fitting device 1 Leakage to the periphery can be minimized.

2 is a perspective view of a tube connector according to an embodiment of the present invention, and FIG. 3 is a cross-sectional view of a fitting member according to an embodiment of the present invention before being fastened to the tube connector.

4 is a side view when the fitting member shown in FIG. 3 is pre-fastened to the tube connector, and FIG. 5 is a cross-sectional view when the fitting member shown in FIG. 3 is pre-fastened to the tube connector.

6 is a cross-sectional view taken along line A-A' of FIG. 4.

7 is a cross-sectional view when a tube is connected to the tube connector shown in FIG. 5.

FIG. 8 is a side view when the fitting member shown in FIG. 6 is fastened to the tube connector, and FIG. 9 is a cross-sectional view when the fitting member shown in FIG. 6 is fastened to the tube connector.

10 is a cross-sectional view illustrating a hook of a fitting member according to an embodiment of the present invention moved to the periphery of a receiving groove, and FIG. 11 is a cross-sectional view of a hook of the fitting member according to an embodiment of the present invention retracted from the periphery of the receiving groove It is a cross-sectional view.

A plurality of hooks 12 may protrude from the fitting member 6. The hook 12 can be fastened to the tube connector 8 in a snap-fit manner.

The tube connector 8 may include a tube connecting body 20 to which the tube 2 is connected and a hook attaching and detaching body 30 to which the hook 12 is attached.

A flow path P through which the liquid fluid passes may be formed in the inner circumference of the tube connector 8. The flow path P may be formed long from the tube connection body 20 to the hook attachment/detachment body 30.

When the fitting member 6 is at a position where the hook 12 is accommodated in the secondary receiving groove G3 to be described later, the tube connecting body 20 may be compressed to the outer surface 2A of the inner tube 2 .

The fitting member 6 may pressurize a portion of the tube 2 connected to the tube connecting body 20 with the tube connecting body 20, and the fitting member 6 is in close contact with the tube 2 and the tube 2 ) Can function as a pressing member that comes into close contact with the tube connector (8).

The fitting member 6 may include a pressing body 14 and an extension body 16.

The hook 12 may protrude from the end 17 of the extension body 16 in the longitudinal direction L of the fitting member.

The pressing body 14 has a first inner diameter D1 and may pressurize a portion of the tube 2 surrounding the outer circumference of the tube connecting body 20. In the inner circumference of the pressure body 14, a gradient portion 15 may be formed in an area adjacent to the extension body 16, and the gradient portion 15 has an inner diameter from the pressure body 14 to the extension body 16. Can be formed to become larger gradually.

The gradient portion 15 may be in close contact with the outer circumference of the tube 2 in both directions of the longitudinal direction L and the radial direction R of the fitting member 6.

The extension body 16 may have a second inner diameter D2 that is larger than the first inner diameter D1 and may extend from the pressing body 14.

The pressure body 14 and the extension body 16 may be formed in a hollow cylindrical shape as a whole, and the outer diameter of the pressure body 14 and the outer diameter of the extension body 16 may be the same.

The tube connecting body 20 may be inserted into the tube 2. The tube connecting body 20 may be inserted into the inner surface 2B of the tube 2. The outer diameter of the tube connection body 20 may be smaller than the outer diameter of the hook detachable body 20. The tube connection body 20 may be formed to protrude from the hook detachable body 30 in the longitudinal direction of the hook detachable body 30.

The tube connection body 20 may include a gradient portion 25. The gradient portion 25 may be formed to increase in diameter as the hook attachable and detachable body 30 becomes closer.

The hook detachable body 30 may extend from the tube connection body 20. The average diameter of the hook detachable body 30 may be larger than the average diameter of the tube connection body 20.

The hook detachable body 30 may include a first protrusion 40, a receiving groove G1, and a second protrusion 60.

The hook detachable body 30 may include a body 32 formed in a cylindrical shape as a whole, and the first protrusion 40 may protrude from the outer circumference of the body 32, and the receiving groove 40 is the body ( 32) may be recessed in the outer circumference, and the second protrusion 60 may protrude from the receiving groove 40.

The first protrusion 40 may be formed on one side of the hook detachable body 30.

The first protrusion 40 may be formed on the outer circumference of one end in the longitudinal direction (L) of the hook detachable body 30. The first protrusion 40 may be formed as a whole in a ring shape.

The first protrusion 40 may be formed on the outer circumference of one end of the body 32 in the longitudinal direction and the other end of the body 32 adjacent to the tube connection body 20. When the fitting member 6 is fastened, the hook 12 may be elastically bent and cross over the first protrusion 40, and after riding over the first protrusion 40, the hook 12 may be restored to its original shape.

A space larger than the hook 12 may be formed in the receiving groove G1. A hook 12 restored to its original shape after riding over the first protrusion 40 may be accommodated in the receiving groove G1.

The receiving groove (G1) may be formed by being recessed in the outer circumference of the hook fastening body 30, in particular, the body 32.

The receiving groove (G1) may be formed long in the longitudinal direction (L) of the hook detachable body (30).

The receiving groove (G1) is a pair of side surfaces 51 and 52 facing in the circumferential direction (C) of the body 32, and one end surface 53 facing in the longitudinal direction (L) of the body 52, and It may be formed by the other end surface 54 and the bottom surface 55.

The receiving groove (G1) may be formed in a plurality of hooks detachable body (30).

The receiving groove (G1) and the periphery of the receiving groove (34) may be formed alternately along the circumferential direction (C) of the hook detachable body (30).

The second protrusion 60 may be formed in the receiving groove G1 to be spaced apart from the first protrusion 40. The second protrusion 60 is spaced apart from each of the longitudinal one end 53 and the other end 54 of the receiving groove G1 between the longitudinal one end 53 and the other end 54 of the receiving groove G1 Can be.

The second protrusion 60 may be formed to cross the receiving groove G1. The second protrusion 60 may be formed to protrude in the radial direction R from the bottom surface 55 of the receiving groove G1. The second protrusion 60 may be formed to connect the pair of side surfaces 51 and 52.

The circumferential length of the second protrusion 60 may be shorter than the circumferential length of the first protrusion 40.

The second protrusion 60 may divide the receiving groove G1 into a first receiving groove G2 and a second receiving groove G3.

The first receiving groove G2 may be closer to the tube connection body 20 than the second receiving groove G3.

The first receiving groove (G2) and the second receiving groove (G3) may be positioned in a row in the longitudinal direction of the tube connector (8) with the second protrusion (60) therebetween.

The hook 12 crossed over the first protrusion 40 may be accommodated in the first receiving groove G2 between the first protrusion 40 and the second protrusion 60, and the first receiving groove G2 The hook 12, which was located at, may be moved over the second protrusion 60 to the second accommodation groove G3.

When the hook 12 crosses the first protrusion 40 and is accommodated in the primary receiving groove G2, the fitting member 6 may be pre-fastened to the hook connector 8, and the hook 12 When is received in the secondary receiving groove (G2) over the second protrusion (60), the fitting member 6 may be in a state of being fastened to the hook connector (8).

The length of the secondary accommodating groove G3 in the circumferential direction may gradually decrease as the distance from the first protrusion 40 increases.

When the fitting member 6 is rotated on one side 51 in the circumferential direction of the receiving groove (G1), the hook 12 accommodated in the secondary receiving groove (G3) opens to the periphery (34) of the receiving groove (G1). A slope (S) that goes up may be formed.

Meanwhile, the slope G may be formed in a shape in which the hook 12 smoothly and quickly exits the secondary receiving groove G1.

The slope S may be formed to be convex toward the outside. The radius of curvature R1 of the slope S may be smaller than the radius of curvature R2 of the periphery of the receiving groove 34.

The slope S may include an area facing the secondary accommodating groove G3 and an area facing the primary accommodating groove S2.

The area of the slope (S) facing the secondary receiving groove (S2) can help the hook 12 located in the secondary receiving groove (S3) to rise smoothly to the periphery 34 of the receiving groove (G1). .

The area of the slope (S) facing the primary receiving groove (S2) may help to smoothly re-enter the hook (12) placed on the periphery (34) of the receiving groove (G1) into the primary receiving groove (S2).

The other side surface 52 in the circumferential direction of the receiving groove (G1) faces one side surface 51 in the circumferential direction of the receiving groove (G1) in the circumferential direction (C), and the bottom surface 35 and 90 of the receiving groove (G1) Can intersect at an angle close to °.

The hook 12 accommodated in the secondary receiving groove G3 can be raised by contacting the slope S when the fitting member 6 rotates in one direction (rotated in the direction in which the slope S is located), While rotating along the slope (S) in the circumferential direction (C), it can bend in an outward direction.

After the hook 12 gradually rises along the slope S, it may be seated in the periphery 34 of the receiving groove G1.

After the hook 12 is seated in the periphery of the receiving groove G1, the fitting member 6 can be retracted in the opposite direction to the fastening direction, and the hook 12 is along the periphery 34 of the receiving groove G1. It can slide in the longitudinal direction (L) of the tube connector (8).

When the fitting member 6 is retracted by a predetermined distance, the hook 12 may be caught by the first protrusion 40.

When the hook 12 moves as described above, the hook 12 can come out of the secondary receiving groove G3 without having to ride over the second protrusion 60, and the fitting member 6 has little force and simple It can be disengaged from the tube connector 8 by operation.

As described above, when the hook 12 comes out of the secondary receiving groove G1, the fitting member 6 may no longer press the tube 2, and the operator pulls the tube 2 The tube (2) can be removed from the tube connector (8).

A new tube can be connected to the tube connector 8 as described above, and the hook 12 placed on the periphery 34 of the receiving groove G1 rides the slope S when the fitting member 6 rotates. The receiving groove (G2) can be re-entered, and when the hook (12) crosses the second protrusion (60) and is fastened to the tube connector (8), the fitting member (6) is connected to the tube connector (8). A new tube can be pressed against the tube connector 8, and the new tube can be in close contact with each of the fitting member 6 and the tube connector 8.

That is, the fitting member 6 and the tube connector 8 of the tube fitting device 1 of the present embodiment can be used continuously even if the tube is replaced several times, and thus can be used semi-permanently.

The above description is merely illustrative of the technical idea of the present invention, and those of ordinary skill in the art to which the present invention pertains will be able to make various modifications and variations without departing from the essential characteristics of the present invention.

Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but to explain the technical idea, and the scope of the technical idea of the present invention is not limited by these embodiments.

The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be interpreted as being included in the scope of the present invention.

1: Tube fitting device 2: Tube
6: fitting member 8: tube connector
12: hook 20: tube connecting body
30: hook detachable body 40: first protrusion
60: second protrusion G1: receiving groove
G2: primary accommodation groove G3: secondary accommodation groove
S: slope

Claims (9)

In the tube fitting device to which the tube is connected,
A fitting member from which a plurality of hooks protrude; And
A tube connector having a tube connecting body inserted into the tube and a hook attaching and detaching body extending from the tube connecting body and attaching and detaching the hook; Including,
The hook attachment and detachment body
A first protrusion over which the hook rides;
A receiving groove in which a hook crossed over the first protrusion is accommodated;
The receiving groove is formed to be spaced apart from the first protrusion to divide the receiving groove into a primary receiving groove and a secondary receiving groove, and after riding over the first protrusion, a hook accommodated in the primary receiving groove receives the second Includes a second protrusion overboard to move to the groove,
The fitting member is pressed against the outer surface of the tube into which the tube connection body is inserted when the hook is at a position to be received in the secondary receiving groove,
On one side of the receiving groove in the circumferential direction, when the fitting member is rotated, the hook accommodated in the secondary receiving groove is opened, and a slope that rises around the receiving groove is formed.
Tube fitting device. The method of claim 1,
The slope is a tube fitting device formed to be convex toward the outside. The method of claim 1,
A tube fitting device having a radius of curvature of the slope smaller than a radius of curvature around the receiving groove. The method of claim 1,
A tube fitting device in which the length of the secondary receiving groove in the circumferential direction gradually decreases as the distance from the first protrusion increases. The method of claim 1,
The other side of the receiving groove in the circumferential direction faces one side of the receiving groove in the circumferential direction in the circumferential direction, and crosses the bottom surface of the receiving groove. The method of claim 1,
The receiving groove is formed in a plurality of the hook detachable body,
A tube fitting device alternately formed around the receiving groove and the receiving groove along the circumferential direction of the hook attachment/detachment body. The method of claim 1,
The circumferential length of the second protrusion is shorter than the circumferential length of the first protrusion
Tube fitting device. The method of claim 1,
The fitting member is
A pressurizing body having a first inner diameter and pressing a portion of the tube surrounding the outer circumference of the tube connection body,
And an extension body extending from the pressing body and having a second inner diameter larger than the first inner diameter,
The hook is a tube fitting device protruding from the end of the extension body in the longitudinal direction of the fitting member. The method of claim 1,
A tube fitting device having an average diameter of the hook detachable body larger than the average diameter of the tube connection body.

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