KR101599804B1 - Checking apparatus of pipe insertion and method of connecting a pipe to a target object - Google Patents

Abstract

The present invention relates to a tube insertion confirmation apparatus. A tube insertion checking device according to one aspect of the present invention is a tube insertion checking device for confirming that a tube is inserted at a predetermined depth into a connector having a nut and a tube holding portion accommodated in the nut, ; And a nut coupling member coupled to the connector seating member and having a coupling portion to be engaged with the nut when the connector is seated on the connector seating member, wherein a portion of the coupling portion is formed when the tube is inserted into the connector And the pipe is positioned on a moving path of the pipe, and when the pipe is inserted into the connector at a certain depth, the pipe is moved by the pipe to release the engagement between the pipe and the pipe.

Description

[0001] 1. Field of the Invention [0002] The present invention relates to a pipe insertion inspecting apparatus and a method for connecting a pipe to an object,

The present invention relates to a tube insertion confirmation device and a method for connecting a tube to a connection object.

As a typical application example for connecting pipes, there is a case in which an indoor unit and an outdoor unit of an air conditioner are connected and fitted.

The connector for connecting the tube to the tube or connecting the tube to the valve or the like may include a nut and a grip ring provided in the nut. Then, after inserting the tube into the nut, the nut is coupled to another nut, valve, or the like. At this time, the grip ring prevents the tube inserted into the nut from coming off the nut.

The operator manually inserts the tube into the nut. The tube should be inserted into the nut by a certain depth. However, there is a problem that it is difficult for the operator to confirm whether the pipe is inserted into the nut by the required depth in the process of manually inserting the pipe into the nut. When the pipe is not inserted into the nut at a certain depth, there is a problem that the fitting of the pipe is not accurately performed and the fluid leaks from a portion where the pipe is connected.

It is an object of the present invention to provide a tube insertion confirmation device, a tube connection assembly, and a method for connecting a tube to a connection object, in which an operator can easily confirm that a tube is inserted into a nut at a predetermined depth.

A tube insertion checking device according to one aspect of the present invention is a tube insertion checking device for confirming that a tube is inserted into a connector having a nut and a tube fixing part accommodated in the nut at a predetermined depth, A tube seat formed on the seating member and contacting the tube in a fully inserted state to prevent the tube from being further inserted; A nut coupling member coupled to the connector seating member and guiding insertion of the tube and selectively restraining the nut; At least a portion of which is located on the path of movement of the tube when the tube is inserted and is in contact with the tube; And a hook protruding from the coupling portion toward the nut and being engaged with the peripheral surface of the nut in a state where the nut is seated on the connector seat member, The hook is deformed in a direction intersecting with the insertion direction of the pipe by the contact with the pipe, thereby releasing the engagement between the hook and the insertion groove.
Wherein the tube mount parts are spaced apart from each other at a position facing each other, and the joint part is located between the end parts of the tube mount part.
A plurality of the engagement portions are spaced apart from each other, and each engagement portion includes a contact surface for contacting the tube, and a minimum distance between the contact surfaces is smaller than a diameter of the tube.
The contact surface is a tapered surface at the coupling portion.
And the hook is engaged with the insertion groove recessed along the periphery of the nut.
The connector seating member includes at least one rotation preventing portion extending to contact with an outer surface of the nut and having a surface that is in close contact with a plane around the nut to prevent rotation of the nut.
The connector seating member includes at least one support for supporting the tube fixing part.
A plurality of the support portions are disposed apart from each other, and a part of the engagement portion is positioned between the plurality of support portions.
Wherein the pipe fixing portion includes a grip ring for fixing the pipe and a paralle member for picking up the pipe, and the paralle member is seated on the support portion in a state where the grip ring is integrated with the paralle member .
The coupling portion is elastically deformable to the nut coupling member.
The connector seating member includes an opening through which the engaging portion penetrates.
The coupling portion is disposed so that a plurality of the coupling portions face each other, and an opening is formed in the corresponding nut coupling member between the coupling portions.

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A method of connecting a tube according to another aspect to a connection object includes the steps of: placing the nut and the connector on the connector seating member and coupling the hook and the nut formed on the coupling portion; Inserting a tube into the tube seating portion in the nut seated on the connector seating member so that the tube moves the coupling portion in a direction intersecting the tube insertion direction to release the coupling between the nut and the hook; Separating the connector into which the tube is inserted in the connector seating member; And connecting the connector having the tube inserted thereto to the connection object.

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According to the proposed invention, since the connector can be detached from the tube insertion confirmation device when the tube is completely inserted, the user can insert the tube into the connector by the required depth.

Further, the user can easily confirm that the pipe is inserted to the connector by the required depth by confirming that the connector is detachable from the tube insertion confirmation device.

Further, according to the present invention, since the tube is inserted only in a state in which the connector is seated in the tube inserting confirmation device, the process for inserting the tube into the connector is simple and the user can easily check whether the tube is completely inserted There is an advantage.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view of a tube insertion confirmation apparatus according to a first embodiment of the present invention; Fig.
2 is an exploded view of a tube insertion confirmation apparatus according to a first embodiment of the present invention;
FIG. 3 is a cross-sectional view taken along AA of FIG. 1; FIG.
4 is a view showing a state where the connector according to the first embodiment of the present invention is seated on the tube insertion confirmation device.
5 is a view showing a state in which a part of the pipe is inserted into the connector;
6 is a view showing a state in which a pipe is inserted into a connector by a required depth;
7 is a view showing a tube insertion confirmation device according to a second embodiment of the present invention.
8 is a view showing a tube insertion confirmation device according to a third embodiment of the present invention.
9 is a view showing a tube insertion confirmation device according to a fourth embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference numerals whenever possible, even if they are shown in different drawings. In the following description of the embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the difference that the embodiments of the present invention are not conclusive.

In describing the components of the embodiment 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. When 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, Quot; may be "connected," "coupled," or "connected. &Quot;

It is to be understood that the spirit of the present invention is not limited to the contents of the embodiments but may include embodiments which can be derived by combinations of the embodiments.

FIG. 1 is a perspective view of a tube insertion detecting device according to a first embodiment of the present invention, FIG. 2 is an exploded view of a tube insertion detecting device according to a first embodiment of the present invention, Fig.

2, a connector and a tube are shown together with a tube insertion confirmation device for an understanding of the invention.

1 to 3, the tube insertion confirmation device 10 according to the first embodiment of the present invention includes a first member 100 on which the connector 2 is seated, a first member 100 on which the connector 2 is seated, And a second member 200 coupled to the first member 100 and selectively coupled to the connector 2 seated in the first member 100.

First, the connector 2 will be briefly described.

The connector 2 includes a nut 3 to be connected to a mating member and a pipe 3 inserted into the nut 3 to prevent the tube 1 inserted into the nut 3 from being pulled out of the nut 3 And a collar member (5) which is received in the nut (3) and performs a function of gripping the tube (1) in the process of joining the nut (3) to the mating body have.

However, depending on the type of the connector 2, the number or configuration of components constituting the connector 2 may be changed. That is, either the grip ring 4 or the paralle member 5 may be omitted. Alternatively, the connector 2 may further include an additional configuration other than the grip ring 4 and the paralle member 5.

In the present specification, the grip ring 4 and the paralle member 5 are collectively referred to as a tube fixing part which serves to fix the tube. Therefore, the connector may be described as including the nut and one or more tube fixing parts provided inside the nut.

The grip ring 4 may be received in the nut 3 together with the paralle member 5 while being coupled to the paralle member 5. Or the grip ring 4 and the paralle member 5 may be individually received in the nut 3. [

The nut 3 may be formed of, for example, aluminum or may be plated, or a coating layer may be formed on part or all of the outer surface of the nut 3 to prevent corrosion and prevent a chemical reaction on the surface.

The nut 3 may include an insertion hole 31 into which the tube 1 is inserted. The grip ring (4) and the paralle member (5) have a hollow, and the pipe (1) can pass through.

One or more insertion grooves 32 for engaging with a part of the second member 200 may be formed in the nut 3 in the circumferential direction. One insertion groove 32 may be formed on the entire circumference of the nut 3 or a plurality of insertion grooves 32 may be formed spaced apart from each other by a predetermined distance.

The nut 3 may be generally formed in a polygonal shape. That is, the outer circumferential surface of the nut 3 may include a plurality of planes.

Next, the tube insertion confirmation device 10 will be described in detail.

The first member (100) includes a plurality of connectors (2) for substantially preventing rotation of the connector (2), substantially the nut (3) in a state in which the connector (2) is seated on the first member Rotation preventing portions 110 and 111, respectively. The plurality of rotation preventing portions 110 and 111 may be spaced apart from each other by a predetermined distance and the nut 3 may be positioned between the plurality of rotation preventing portions 110 and 111. Each of the plurality of rotation preventing portions 110 and 111 may include a rotation preventing surface 112. The anti-rotation surface 112 may be planar. The rotation of the nut 3 can be prevented as the plane of the rotation prevention surface 112 and the nut 3 comes into contact with each other.

As another example, it is also possible that one of the plurality of rotation preventing portions 110 and 111 includes the rotation preventing surface 112. As another example, it is possible to prevent rotation of the nut 3 by a single rotation preventing portion including a plane.

The first member 100 may include a plurality of supports 120, 121 on which the connector 2, substantially the paralle member 5, is seated. The plurality of supports 120 and 121 are spaced apart from each other by a predetermined distance.

The tube 1 may be inserted between the plurality of supports 120, 121. The distance between the plurality of supports 120 may be equal to or greater than the diameter of the tube 1 for inserting the tube 1 between the plurality of supports 120.

Each of the plurality of supports 120 and 121 may include a seating part 122 for seating the paralle member 5 thereon. The seating part 122 may be formed by stepping the upper ends of the plurality of supporting parts 120, 121. Alternatively, the paralle member 5 may be seated on the upper surfaces of the plurality of supports 120, 121.

In the present invention, when the connector 2 does not include the collar member 5, the nut 3 or the grip ring 4 may be seated on the seating portion 122. Alternatively, the nuts 3 may be directly seated on the upper surface of the first member 100 without the plurality of supports 120 and 121. When a tube fixing part (for example, a collar member, a grip ring) for fixing the tube 1 is provided in the nut 3, a tube fixing part for fixing the tube 1 is provided with the nut 3 It may be desirable for the support portions 120, 121 to support the tube fixture so that the position is fixed within the tube support.

As another example, it is also possible for a single support portion to support the above-mentioned paralle member 5. In this case, the single support may have a hollow for insertion of the tube 1 or may be formed in a shape such as "C " in horizontal cross section.

The plurality of supports 120 and 121 may be inserted into the nut 3 so that the plurality of supports 120 and 121 support the parallel member 5. Therefore, a part of the nut 3 is positioned between the support portions 120 and 121 and the rotation preventing portions 110 and 111. The plurality of supports 120 and 121 may have a round surface having the same curvature as the curvature of the outer surface of the tube 1.

The first member 100 may further include a tube seat part 130 through which the tube 1 passing through the connector 2 is seated. The tube mount part 130 functions as a stopper for preventing the tube 1 from being inserted further when the tube 1 is inserted into the connector 2 to a certain depth.

The first member 100 may further include one or more fastening portions 150 for fastening with the second member 200.

The second member 200 may include one or more coupling portions 210 and 220 for coupling to the insertion groove 32 of the nut 3. In the present invention, for example, the second member 200 includes two coupling portions 210 and 220. In this embodiment, the number of the coupling portions 210 and 220 is not limited I will reveal.

The plurality of coupling portions 210 and 220 may be spaced apart from each other by a predetermined distance. Each of the engaging portions 210 and 220 may include hooks 212 and 222 for catching the insertion groove 32 of the nut 3. The plurality of coupling portions 210 and 220 may be elastically deformed by an external force. That is, the plurality of coupling portions 210 and 220 may be elastically deformable to the second member 200.

The contact surfaces 211 and 221 are formed at portions of the plurality of coupling portions 210 and 220 facing each other. The contact surfaces 211 and 221 are tapered. The plurality of contact surfaces 211 and 221 are inclined so that the distance between the ends of the engaging portions 210 and 220 decreases toward the lower side. The contact surfaces 211 and 221 may have a round surface having the same curvature as the outer curvature of the tube 1 so that the contact area between the plurality of contact surfaces 211 and 212 and the tube 1 is increased. have. Of course, it is also possible that the plurality of contact surfaces 211 and 221 are planar.

A portion of the plurality of coupling portions 210 and 220 may be located on the movement path of the tube 1. The maximum spacing between the plurality of contact surfaces 211 and 221 may be equal to or greater than the diameter of the tube 1 and the minimum spacing may be less than the diameter of the tube 1. Therefore, in the process of inserting the tube 1, a part of the plurality of contact surfaces 211 and 221 is located on the movement path of the tube 1. [

During the insertion of the tube 1, the tube 1 may contact the respective contact surfaces 211 and 221. As the tube 1 is inserted, the distance between the respective contact surfaces 211 and 221 increases, and the plurality of coupling portions 210 and 220 may be bent in a direction away from each other.

Even when the second member 200 includes one engaging portion, at least a portion of the one engaging portion may be located on the movement path of the tube 1. [

The first member 100 may include a plurality of openings 140 and 141 through which the plurality of coupling portions 210 and 220 pass. The plurality of engaging portions 210 and 220 may be positioned between the plurality of supporting portions 120 and 121 while the plurality of engaging portions 210 and 220 pass through the openings 140 and 141. [ have.

The second member 200 may further include one or more fastening holes 230 for fastening one or more fastening portions 150 provided on the first member 100.

The second member 200 may further include an opening 232 for facilitating elastic deformation of the plurality of coupling portions 210 and 220. The opening 232 may be positioned between the plurality of coupling portions 210 and 220.

Hereinafter, the process of inserting the tube into the connector and the operation of the tube inserting apparatus will be described.

FIG. 4 is a view showing a state in which the connector according to the first embodiment of the present invention is seated in the tube insertion confirmation device, FIG. 5 is a view showing a state where a part of the tube is inserted into the connector, In which the pipe is inserted into the connector.

Referring to FIGS. 4 to 6, first, the first member 100 is fitted with the collar member 5 to which the grip ring 4 is coupled. That is, the paralle member 5 is seated on the seating portion 122 of the plurality of support portions 120, 121. Then, the nut (3) is seated on the paralle member (5). That is, the ferrule member 5 is received in the nut 3. Of course, it is also possible to seat the paralle member 5 in the seating part 122 in a state where the paralle member 5 is accommodated in the nut 3.

The nut 3 is brought into contact with the hooks 212 and 222 of the engaging portions 210 and 220 while the nut 3 is seated on the paralle member 5, 220 are moved away from each other. When the nut 3 is seated on the collar member 5, the ends of the hooks 212 and 222 are aligned with the insertion groove 32 of the nut 3, Is inserted into the insertion groove (32).

When the connector 2 is mounted on the first member 100 as described above, the connector 2 is engaged with the tube insertion confirmation device 10, substantially the second member 200.

The tube 1 is inserted into the connector 2 in a state where the connector 2 is coupled to the tube insertion confirmation device 10 as described above.

The tube 1 is brought into contact with the contact surfaces 211 and 221 of the engaging portions 210 and 220 while the tube 1 is inserted into the connector 2. [ When the tube 1 is continuously inserted in a state where the tube 1 is in contact with the contact surfaces 211 and 221 of the respective coupling parts 210 and 220, (210, 220) are elastically deformed in directions away from each other. The hooks 212 and 222 gradually fall out of the insertion groove 32 of the nut 3 when the plurality of engaging portions 210 and 220 are elastically deformed away from each other.

When the tube 1 is inserted into the tube seating part 130 of the first member 100 in the process of inserting the tube 1 into the connector 2, The hooks 212 and 222 are not completely inserted into the insertion groove 32 of the nut 3 in a state where the tube 1 is prevented from being inserted into the connector 2 and the tube 1 is seated in the tube seating part 130. [ . That is, the coupling between the nut 3 and the coupling portions 210 and 220 is released.

When the hooks 212 and 222 are completely removed from the insertion groove 32 of the nut 3, the connector 2 becomes detachable from the tube insertion confirmation device 10.

By confirming that the connector 2 is detachable from the tube insertion confirmation device 10, the user can confirm that the tube 1 is inserted to the connector 2 by the required depth.

When the tube 1 is inserted into the connector 2, the tube 1 is held in the connector 2 because the grip ring 4 picks up the tube. Therefore, the connector 2 can be coupled to the mating member after the connector 2 with the pipe 1 secured thereto is separated from the tube insertion confirmation device 10. [

The elastic force of each of the engaging portions 210 and 220 in the present embodiment is such that the hooks 212 and 222 do not come in contact with the nut 100 until the tube 1 is seated in the tube seating portion 130 of the first member 100. [ Can be designed so as to be completely missing from the insertion groove 32 of the base 3. Since the hooks 212 and 222 are positioned in the insertion groove 32 of the nut 3 before the tube 1 is seated in the tube seating portion 130 of the first member 100 The connector 2 can not be separated from the tube insertion confirmation device 10. [

According to the proposed invention, since the connector can be detached from the tube insertion confirmation device when the tube is completely inserted, the user can insert the tube into the connector with the required depth.

Further, the user can easily confirm that the pipe is inserted to the connector by the required depth by confirming that the connector is detachable from the tube insertion confirmation device.

Further, according to the present invention, it is only necessary to insert the pipe in a state in which the connector is seated in the pipe insertion checking device, so that the process for inserting the pipe into the connector is simple and the user can easily confirm whether the pipe is completely inserted There are advantages.

7 is a view showing a tube insertion confirmation apparatus according to a second embodiment of the present invention.

The second embodiment of the present invention is the same as the first embodiment in other respects, but differs in the coupling structure of the coupling portion and the nut. Therefore, only the characteristic parts of the second embodiment of the present invention will be described below.

7, the nut 3 according to the second embodiment of the present invention includes a first portion 33 and a second portion 34 having an outer diameter larger than the outer diameter of the first portion 33 can do. Therefore, the boundary portion between the first portion 33 and the second portion 34 is stepped.

Each of the hooks 252 and 254 provided on the second member 200 may be hooked on the second portion 34. [ That is, the hooks 252 and 254 are caught by the stepped portion, which is a boundary portion between the first portion 33 and the second portion 34.

According to this embodiment, there is an advantage that the nut 3 can be coupled to the tube insertion confirmation device without forming the nut 3, that is, without forming the insertion groove in the nut 3.

8 is a view showing a tube insertion confirmation apparatus according to a third embodiment of the present invention.

The third embodiment of the present invention is the same as the first embodiment in other parts, but is characterized in that the first member and the second member are integrally formed. Therefore, only the characteristic parts of the third embodiment of the present invention will be described below.

Referring to FIG. 8, the first member 100 according to the third embodiment of the present invention may have one or more coupling portions 170 and 180 for coupling with the nut 3. The engaging portions 170 and 180 may be elastically deformed in the process of inserting the tube 1 and may include hooks 172 and 182 for catching the nut 3. As described in the first embodiment, have.

According to the present embodiment, there is an advantage that the structure of the tube insertion confirmation device can be simplified.

Of course, since the first member 100 and the engaging portions 170 and 180 are not integrally formed, and the engaging portions 170 and 180 are formed as separate articles and are coupled to the first member 100 It is possible.

9 is a view showing a tube insertion confirmation apparatus according to a fourth embodiment of the present invention.

The fourth embodiment of the present invention is the same as the first embodiment in other respects, except that there is a difference in the means for confirming that the tube is completely inserted. Therefore, only the characteristic parts of the fourth embodiment of the present invention will be described below.

Referring to Fig. 9, the tube insertion confirmation device of the fourth embodiment of the present invention may include a first member 100 on which the connector 2 is seated.

The first member 100 of the present embodiment can be formed in the same structure as the first member of the first embodiment except that the coupling portion is not formed, and thus a detailed description thereof will be omitted.

The first member 100 is provided with a confirmation mechanism 192 in which the tube 1 is completely inserted and is pressed by the tube 1. The first member 100 is formed with a receiving portion 191 for receiving the checking mechanism 192 and the receiving portion 191 can be covered by a cover 196. [ The confirmation mechanism 192 may be elastically supported by an elastic member 195.

The confirmation mechanism 192 may include a first protrusion 193 protruding upward from the tube fitting part 130 to which the tube 1 is to be placed. The check mechanism 192 is elastically supported by the elastic member 195 so that the first protrusion 193 protrudes from the tube seat part 130, do. When the tube 1 is seated on the tube seating part 130, the tube 1 presses the first projection 193.

A second protrusion 194 may be formed on the check mechanism 192 on the opposite side of the first protrusion 193. The second protrusion 194 does not protrude outward of the cover 196 in a state in which no external force is applied to the check mechanism 192. However, when the tube 1 is seated on the tube seating part 130 and presses the first projection 193, the confirmation mechanism 192 is moved downward, so that the second projection 194 Is protruded to the outside of the cover (196).

The user can confirm that the tube 1 is inserted up to the required depth in the connector 2 by confirming that the second projection 194 protrudes to the outside of the cover 196. [

The cover 196 constitutes the first member 100 so that the second protrusion 194 protrudes to the outside of the first member 100. [

On the other hand, in the first to fourth embodiments, since the connector is seated on the first member, the first member can be called a connector seating member. Further, in the first embodiment, since the second member is coupled to the nut, the second member can be called a nut coupling member.

The connector, tube and tube insertion confirmation device may be collectively referred to as a tube connection assembly.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. That is, within the scope of the present invention, all of the components may be selectively coupled to one or more of them. Furthermore, the terms "comprises", "comprising", or "having" described above mean that a component can be implanted unless otherwise specifically stated, But should be construed as including other elements. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, 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 construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

1: pipe 2: connector
10: tube insertion confirmation device

Claims (18)

A tube insertion confirmation device for confirming that a tube is inserted at a predetermined depth into a connector having a nut and a tube fixing part accommodated in the nut,
A connector seat member on which the connector is seated;
A tube seat formed on the seating member and contacting the tube in a fully inserted state to prevent the tube from being further inserted;
A nut coupling member coupled to the connector seating member and guiding insertion of the tube and selectively restraining the nut;
At least a part of which is located on the movement path of the tube when the tube is inserted and is in contact with the tube;
And a hook protruding from the coupling portion toward the nut and being engaged with the circumferential surface of the nut in a state where the nut is seated on the connector seat member,
Wherein when the tube is inserted to a position where the tube contacts with the tube seat part, the tube is deformed in a direction intersecting with the insertion direction of the tube by the contact with the tube, thereby releasing the engagement between the hook and the insertion groove. . The method according to claim 1,
Wherein the tube fitting portions are spaced apart from each other at a position facing each other,
Wherein the coupling portion is located between the end portions of the tube mount portion. The method according to claim 1,
Wherein a plurality of the engaging portions are spaced apart from each other,
Each engaging portion including a contact surface for contacting the tube,
Wherein the minimum distance between the respective contact surfaces is smaller than the diameter of the tube. The method of claim 3,
Wherein the contact surface is a tapered surface at the coupling portion. The method according to claim 1,
Wherein the hook is engaged with an insertion groove recessed along the periphery of the nut. The method according to claim 1,
In the connector seating member,
And one or more rotation preventing portions extending in contact with an outer surface of the nut and having a surface that is in close contact with a plane around the nut to prevent rotation of the nut. The method according to claim 1,
Wherein the connector seating member includes at least one support for supporting the tube fixing part. 8. The method of claim 7,
Wherein a plurality of the support portions are disposed apart from each other,
And a part of the engaging part is located between the plurality of supporting parts. 8. The method of claim 7,
Wherein the pipe fixing portion includes a grip ring for fixing the pipe and a paralle member for picking up the pipe, and the paralle member is seated on the support portion in a state where the grip ring is integrated with the paralle member Tube insertion confirmation device. The method according to claim 1,
Wherein the coupling portion is elastically deformable to the nut coupling member. The method according to claim 1,
Wherein the connector seating member includes an opening for allowing the engaging portion to pass therethrough. The method according to claim 1,
Wherein the coupling portion is disposed so that a plurality of the coupling portions face each other, and an opening is formed in the corresponding nut coupling member between the coupling portions. delete delete delete 13. A method of connecting a tube to a connection object using the tube insertion confirmation device according to any one of claims 1 to 12,
Placing the nut and the connector on the connector seat member, and engaging the hook and the nut formed on the connector unit;
Inserting a tube into the tube seating portion in the nut seated on the connector seating member so that the tube moves the coupling portion in a direction intersecting the tube insertion direction to release the coupling between the nut and the hook;
Separating the connector into which the tube is inserted in the connector seating member; And
And connecting the tube-inserted connector to the connection object.
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