Welding-free joint device

Abstract

The invention relates to a solderless joint device. The solderless joint device of the present invention may comprise: a nut member; the first ferrule component is positioned inside the nut component; the second ferrule component is located in the nut component and arranged on one side of the first ferrule component; and a triple contact connection member located inside the nut member and located on a side of the second ferrule member facing the first ferrule member.

Description

TECHNICAL FIELD

[0001] The present invention relates to a solderless joint device, and more particularly, to a solderless joint device that can connect a refrigerant pipe and a stop valve without machining a flared portion at an end of the refrigerant pipe connected to the stop valve and can be used to connect two pipes without performing an additional machining operation. BACKGROUND

[0002] A stop valve connection is provided at a refrigerant circulation pipe (a refrigerant pipe) of an air conditioning system, and is a valve for supplementing or supplying refrigerant circulated in an air conditioning device such as an air conditioner or a refrigeration device.

[0003] Figure 1 FIG. 1 is a partial cross-sectional view of a conventional stop valve for an air conditioner, Figure 2 FIG. 2 is a detailed perspective view of a conventional indoor unit side refrigerant pipe connection portion. As shown in the drawing, the stop valve includes a first branch pipe 10 connected to a refrigerant pipe 14 extending from an indoor unit side, a second branch pipe 20 connected to a refrigerant pipe 21 connected to a device such as a pump, a third branch pipe 30 for injecting refrigerant, etc., in which a valve core serving as a kind of check valve is built-in, and a fourth branch pipe 40 in which a rotary lever valve for switching a flow path of refrigerant is built-in. Figure 1 Reference numeral 31 not explained in the drawing indicates a valve core cover, and 41 indicates a nut cover.

[0004] A threaded portion 11 is formed at an outer circumferential surface of the first branch pipe 10, and is combined with a nut 13 inserted into the refrigerant pipe 14. In this case, as shown in the drawing, a stop valve is conventionally connected to a refrigerant pipe by flaring an end of the refrigerant pipe 14 in a manner corresponding to an inclined surface 12 formed at an inlet side end of the first branch pipe 10. That is, as shown in the drawing, an end of the refrigerant pipe 14 is conventionally flared in a funnel shape or a conical shape, and the inner circumferential surface of the flared portion 14a is fitted to the outer circumferential surface of the inclined surface 12 by the nut 12. However, this flaring method requires expensive flaring equipment, and thus is extremely costly and difficult to quickly respond to a change in the specification of the refrigerant pipe. Also, when a refrigerant pipe is replaced or repaired in the field, the end of the refrigerant pipe cannot be flared, and thus the operation is extremely inconvenient. More seriously, in the conventional stop valve, a contact portion of the flared portion 14a of the refrigerant pipe 14 and the inclined surface 12 of the first branch pipe 10 often causes a refrigerant leakage phenomenon. Thus, after a predetermined time of use, or when an air conditioner is moved and reinstalled, the refrigerant needs to be newly injected, and thus is inconvenient.

[0005] Accordingly, there is an increasing demand for a joint device that can easily and quickly connect a refrigerant pipe to a stop valve. Also, there is an increasing demand for a universal joint that is multipurpose or compatible, i.e., can be used not only for the connection of a stop valve to a refrigerant pipe but also for the connection of an ordinary pipe.

[0006] To solve the problems as described above, the present applicant has proposed the present invention.

[0007] Related prior art includes Korean Patent No. 10-1153412 (Invention title: Stop valve for air conditioner, Date of grant: May 30, 2012). SUMMARY

[0008] To solve the problems as described above, the present invention provides a solderless joint device that can connect a refrigerant pipe to a stop valve without forming a flared portion at an end of the refrigerant pipe.

[0009] The present invention provides a solderless joint device that can be connected to a pipe by plastic press connection to achieve the connection between a pipe and a pipe.

[0010] The present invention provides a solderless joint device that does not require an additional work when connecting two pipes.

[0011] The present invention provides a solderless joint device that can be used for the connection of a refrigerant pipe to a stop valve and the connection of two pipes.

[0012] The problems to be solved by the present invention are not limited to the above-mentioned problems, and other problems not mentioned can be clearly understood by those skilled in the art from the following description.

[0013] To achieve the above object, the solderless joint device of the present invention can include a nut member, a first ferrule member inside the nut member, a second ferrule member inside the nut member, disposed on one side of the first ferrule member, and a triple contact connection member inside the nut member, disposed on one side of the second ferrule member facing the first ferrule member.

[0014] A stop valve can be connected on one side of the triple contact connection member facing the second ferrule member.

[0015] The present invention can include a gasket member on one side of the triple contact connection member facing the second ferrule member.

[0016] The present invention can include a pipe connection member on one side of the triple contact connection member facing the second ferrule member.

[0017] The pipe connecting member can include a fitting portion inside the nut member, one end of which is in contact with the triple contact connecting member, and an outer thread portion formed on an outer surface thereof, and a spacer portion formed on an outer surface of the fitting portion, which is in contact with the nut member.

[0018] The fitting portion can be formed on both sides of the spacer portion, and a tapered portion can be formed on one end of the fitting portion.

[0019] The tapered portion can be in contact with the triple contact connecting member.

[0020] The invention can include a gasket member between the triple contact connecting member and the pipe connecting member.

[0021] An outer surface of the triple contact connecting member can be cylindrical or cylindrical, and four central holes of different sizes or shapes can be formed inside the triple contact connecting member.

[0022] The four central holes formed inside the triple contact connecting member can include a first central hole for providing the second collar member, a second central hole connected to the first central hole for providing a pipe, a third central hole connected to the second central hole and smaller than the second central hole, and a fourth central hole connected to the third central hole for providing the gasket member, the stop valve, or the pipe connecting member.

[0023] An inner diameter of the first central hole can continuously decrease from one end of the triple contact connecting member toward the second central hole, the second central hole and the third central hole can be cylindrical, and an inner diameter of the fourth central hole can continuously decrease from the other end of the triple contact connecting member toward the third central hole.

[0024] The smallest inner diameter of the inner diameter of the first central hole can be greater than the inner diameter of the second central hole, the inner diameter of the second central hole can be greater than the inner diameter of the third central hole, and the smallest inner diameter of the inner diameter of the fourth central hole can be the same as the inner diameter of the third central hole.

[0025] One end of the second collar member can be crimped to a first step portion formed at a portion where the first central hole and the second central hole are connected, and one end of a pipe can be crimped to a second step portion formed at a portion where the second central hole and the third central hole are connected.

[0026] An angle formed by a straight line passing through the center of the triple contact connecting member and an inclined surface of the first central hole can be smaller than an angle formed by an inclined surface of the fourth central hole.

[0027] An outer surface of the second collar member can be crimped to an inner surface of the first central hole, an outer surface of the shutoff valve or the pipe connecting member is crimped to an inner surface of the fourth central hole, or the gasket member is crimped to an inner surface of the fourth central hole.

[0028] Details of other embodiments are contained in the detailed description and drawings.

[0029] The weldingless joint device according to the present application can connect a refrigerant pipe and a shutoff valve without machining a flared portion at an end of the refrigerant pipe when connecting the refrigerant pipe and the shutoff valve of an air conditioner or air conditioning system, thereby reducing the inconvenience of machining the flared portion at the end of the refrigerant pipe and effectively preventing refrigerant gas from leaking through the flared portion formed at the end of the refrigerant pipe.

[0030] The weldingless joint device according to the present application can be used not only for connecting a refrigerant pipe and a shutoff valve but also for directly connecting a refrigerant pipe and a general pipe such as a refrigerant pipe, and thus one device can be used for various connection sites.

[0031] The weldingless joint device according to the present application can not only be directly connected to a pipe or a shutoff valve but also be connected to a pipe or the like in a state in which the pipe or the shutoff valve is inserted into the gasket member, and thus the airtightness can be improved.

[0032] The weldingless joint device according to the present application has a triple contact connecting member that crimps an end of a pipe in addition to the first and second collar members that plastically crimp an outer surface of the pipe, and thus the airtightness can be further improved.

[0033] The weldingless joint device according to the present application does not require a work operation on an end of a pipe in order to connect two pipes. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 A perspective view showing a partial cross section of a conventional shutoff valve for an air conditioner.

[0035] Figure 2 A perspective view showing a weldingless joint device according to a first embodiment of the present application.

[0036] Figure 3 A perspective view showing Figure 2 A cross-sectional view of the weldingless joint device shown in FIG. 4.

[0037] Figure 4 A cross-sectional view showing a portion A of FIG. 4 in an enlarged scale. Figure 2

[0038] Figure 5 A perspective view and a cross-sectional view showing a modified example of the weldingless joint device according to the first embodiment of the present application.​

[0039] Figure 6 FIG. 2 is a perspective view showing a solderless joint device according to the second embodiment of the present application.

[0040] Figure 7 FIG. 3 is a sectional view showing the solderless joint device shown in FIG. 2. Figure 6

[0041] Figure 8 FIG. 4 is an exploded perspective view showing a state in which pipes are connected to both sides of the joint device shown in FIG. 2. Figure 6

[0042] Figure 9 FIG. 5 is a sectional view showing the joint device and the pipes shown in FIG. 4. Figure 8

[0043] Figure 10 FIG. 6 is a perspective view showing a state in which pipes are connected to both sides of the joint device shown in FIG. 2, and a sectional view showing a connection state of the joint device and the pipes. Figure 6

[0044] Figure 11 FIG. 7 is a perspective view and a sectional view showing a modification of the solderless joint device according to the second embodiment of the present application.

[0045] Figure 12 FIG. 8 is an exploded perspective view showing a state in which pipes are connected to both sides of the joint device shown in FIG. 7. Figure 11

[0046] Figure 13 FIG. 9 is a sectional view showing the joint device and the pipes shown in FIG. 8. Figure 12 DETAILED DESCRIPTION

[0047] Hereinafter, embodiments disclosed in the present specification will be described in detail with reference to the accompanying drawings. For the same or similar structural elements, the same or similar reference numerals are used and repetitive description is omitted. The suffix "s" is added to the description of the structural elements in the following description for the convenience of explanation and proper use, and does not have meaning or role in itself for distinguishing each other. Also, in describing the embodiments disclosed in the present specification, if it is determined that the detailed description of related known functions or constructions can obscure the gist of the embodiments disclosed in the present specification, the detailed description will be omitted. Also, it should be understood that the accompanying drawings are used to assist in the understanding of the embodiments disclosed in the present specification and do not limit the technical idea disclosed in the present specification according to the accompanying drawings, and all modifications, equivalent technical solutions, and alternative technical solutions included in the idea and technical scope of the present application are included.

[0048] ​​​​​​Terms containing ordinal numbers, such as "first" and "second," can be used to describe various structural elements, but the structural elements are not limited to these terms. These terms are used only to distinguish one structural element from another.

[0049] It should be understood that when it is mentioned that a structural element is "connected" to another structural element, it can be directly connected to the other structural element, but there may also be other structural elements in between.

[0050] Unless otherwise expressly stated in the text, the singular form includes the plural form.

[0051] It should be understood that, in this application, terms such as “comprising” or “having” are intended to specify the presence of features, figures, steps, operations, structural elements, components or combinations thereof as described in the specification, and do not preclude the presence or additional possibilities of one or more other features, figures, steps, operations, structural elements, components or combinations thereof.

[0052] It should be noted that the accompanying drawings are simplified and not drawn to scale. The relative dimensions and proportions of parts in the drawings may be enlarged or reduced for clarity and convenience; any dimensions are merely illustrative and not limiting. Furthermore, for the same structures, elements, or components appearing in more than one drawing, similar features are indicated by using the same reference numerals.

[0053] The embodiments of the present invention specifically illustrate ideal embodiments of the invention. Ultimately, various modifications are expected in the drawings. Therefore, the embodiments are not limited to the specific shape of the illustrated region, and may include, for example, modifications resulting from manufacturing processes.

[0054] Figure 2 To illustrate a perspective view of the weldless joint device according to the first embodiment of the present invention, Figure 3 for Figure 2 The cross-sectional view of the weldless joint assembly shown is shown. Figure 4 To show in magnified form Figure 2 Sectional view of part A, Figure 5 A perspective view and a cross-sectional view are provided to illustrate a modified example of the weldless joint device according to the first embodiment of the present invention. Figure 6 To illustrate a perspective view of the weldless joint device according to a second embodiment of the present invention, Figure 7 To show Figure 6 The cross-sectional view of the weldless joint assembly shown is shown. Figure 8 To show in Figure 6 An exploded perspective view showing the connector assembly with pipes connected to both sides. Figure 9 for Figure 8 The cross-sectional view of the connector assembly and pipe shown. Figure 10 To show in Figure 6The diagram shows a perspective view of the pipes connected to both sides of the connector, and a cross-sectional view showing the connection between the connector and the pipes. Figure 11 To illustrate a modified example of the weldless joint device according to the second embodiment of the present invention, a perspective view and a cross-sectional view are provided. Figure 12 To show in Figure 11 An exploded perspective view showing the connector assembly with pipes connected to both sides. Figure 13 for Figure 12 The diagram shows a cross-sectional view of the fitting assembly and piping.

[0055] Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[0056] like Figures 2 to 5 The weldless joint device 100 of the first embodiment of the present invention shown may include: a nut component 170; a first ferrule component 150 located inside the nut component 170; a second ferrule component 130 located inside the nut component 170 and disposed on one side of the first ferrule component 150; and a triple contact connection component 110 located inside the nut component 170 and disposed on one side of the second ferrule component 130 opposite to the first ferrule component 150.

[0057] Reference Figures 2 to 4 In the first embodiment of the present invention, the weldless joint device 100 can be connected to the shut-off valve 210. That is, the shut-off valve 210 can be connected to one side of the triple contact connection member 110 facing the second collar member 130.

[0058] In the weldless joint device 100 of the first embodiment of the present invention, the nut component 170 is threadedly fastened to the shut-off valve 210. The threaded nut component 170, the first collar component 150, the second collar component 130, and the triple contact connection component 110 located inside the shut-off valve 210 are pressed against the outer surface and end of the pipe, so that the outer surface and end of the pipe are plastically pressed against and in surface contact with the first collar component 150, the second collar component 130, and the triple contact connection component 110, thereby enabling the pipe to be connected to the shut-off valve 210 in a completely airtight state. In this way, in the weldless joint device 100 of the first embodiment of the present invention, the first collar component 150, the second collar component 130, and the triple contact connection component 110 are in surface contact with and plastically pressed against the outer surface of the pipe, and the triple contact connection component 110 is in surface contact with and plastically pressed against the shut-off valve 210 or the pipe connection component 310 described later, thereby enabling the pipe to be connected to the shut-off valve or pipe to pipe in a completely airtight state without welding.

[0059] Reference Figure 3 and Figure 4The nut member 170 of the non-welded joint device 100 according to the first embodiment of the present application can include a cylindrical member 171 having a through-hole 175 formed therein. An extension 172 can be formed at one end of the cylindrical member 171 in the length direction of the cylindrical member 171 or in the insertion direction (arrow B direction) of the pipe (refer to FIG. 9). An internally threaded portion 173 can be formed at the end of the inner surface of the cylindrical member opposite the extension 172. The end of the pipe to be connected is inserted into the through-hole 175 of the nut member 170, and the end of the pipe passes through the through-hole 175 and the first collar member 150 and the second collar member 130, and the end of the pipe is in contact with the triple contact connecting member 110. Figure 8 Figure 3 The nut member 170 of the non-welded joint device 100 according to the first embodiment of the present application can include a cylindrical member 171 having a through-hole 175 formed therein. An extension 172 can be formed at one end of the cylindrical member 171 in the length direction of the cylindrical member 171 or in the insertion direction (arrow B direction) of the pipe (refer to FIG. 9). An internally threaded portion 173 can be formed at the end of the inner surface of the cylindrical member opposite the extension 172. The end of the pipe to be connected is inserted into the through-hole 175 of the nut member 170, and the end of the pipe passes through the through-hole 175 and the first collar member 150 and the second collar member 130, and the end of the pipe is in contact with the triple contact connecting member 110.

[0060] The first collar member 150 can include a flange portion 151 in contact with the inner surface of the nut member 170, and a coupling portion 152 extending from one end of the flange portion 151 toward the second collar member 130. A through-hole 155 can be formed in the interior of the first collar member 150 to communicate with the through-hole 175. Preferably, the inner surface 156 of the through-hole 155 can have the same size (inner diameter) as or slightly smaller than the outer diameter of the pipe to be inserted.

[0061] A chamfered tapered portion 153 can be formed at the front end of the flange portion 151 in contact with the second collar member 130 in the insertion direction of the pipe (refer to arrow B direction).

[0062] The second collar member 130 can be located in front of the first collar member 150 in the insertion direction of the pipe. The second collar member 130 can include a body 131 having a conical outer surface 132 with a continuously decreasing outer diameter in the insertion direction of the pipe, and a first through-hole 135 and a second through-hole 137 formed in the interior of the body 131. The first through-hole 135 and the second through-hole 137 are connected to each other.

[0063] The first through-hole 135 formed in the interior of the second collar member 130 can be conical with a continuously decreasing inner diameter in the insertion direction of the pipe (refer to arrow B direction). In contrast, the second through-hole 137 formed in the interior of the second collar member 130 can be cylindrical with the same size of inner diameter.

[0064] In Figure 4 , reference numeral CL denotes a straight line (center line) passing through the centers of the first collar member 150, the second collar member 130, and the triple contact connecting member 110.

[0065] ​Preferably, the angle between the inner surface 136 of the first through-hole 135 and the center line CL should be the same as or smaller than the angle between the tapered portion 153 formed at the front end of the flange portion 151 of the first collar member 150 and the center line CL. Due to this shape, if the nut member 170 is fastened with the stop valve 210 or the pipe connecting member 310, the tapered portion 153 of the first collar member 150 is deeply inserted into the inner surface 136 of the first through-hole 135 of the second collar member 130, while the inner surface 156 of the through-hole 155 of the first collar member 150 is crimped to the outer surface of the pipe, and the outer surface 132 of the body 131 of the second collar member 130 can be crimped to the inner surface 114 of the triple contact connecting member 110.

[0066] The triple contact connecting member 110 can be located in front of the second collar member 130 in the pipe insertion direction. The solderless joint device 100 of the first embodiment of the present application has the triple contact connecting member 110, thereby having technical originality compared with the prior art pipe or pipe connecting device.

[0067] The second collar member 130, the pipe, and the stop valve 210 are located inside the triple contact connecting member 110, or the second collar member 130, the pipe, and the pipe connecting member 310 are located inside the triple contact connecting member 110. If the nut member 170 is fastened with the stop valve 210 or the pipe connecting member 310, the outer surfaces of the second collar member 130, the pipe 90, and the stop valve 210 or the pipe connecting member 310 are crimped by the inner surface of the triple contact connecting member 110, thereby maintaining an airtight state.

[0068] As such, the second collar member 130, the pipe, and the stop valve 210 or the pipe connecting member 310 will all be located inside the triple contact connecting member 110.

[0069] Referring to Figure 3 and Figure 4 The outer surface 111 of the triple contact connecting member 110 can be cylindrical or cylindrical, and four center holes 113, 115, 117, 119 of different sizes or shapes can be formed inside the triple contact connecting member 110. Among them, the four center holes 113, 115, 117, 119 can be continuously arranged in the pipe insertion direction and connected to each other.

[0070] The four central holes 113, 115, 117, 119 formed inside the triple contact connection member 110 can include a first central hole 113 for disposing the second collar member 130, a second central hole 115 connected to the first central hole 113 for disposing the pipe 90, a third central hole 117 connected to the second central hole 115 and having a smaller size than the second central hole 115, and a fourth central hole 119 connected to the third central hole 117 for disposing the stop valve 210 or the pipe connection member 310.

[0071] Here, the gasket member 190 described later can also be disposed in the fourth central hole 119 and in contact therewith.

[0072] The lengths (depths) of the first central hole 113, the second central hole 115, the third central hole 117, and the fourth central hole 119 in the insertion direction of the pipe 90 or the center line CL direction are similar to each other, and the length (depth) of the third central hole 117 is the shortest.

[0073] Referring to Figure 4 The first central hole 113 can have a shape in which the diameter (inner diameter) of the inner surface 114 continuously decreases from one end of the triple contact connection member 110 (an end adjacent to the second collar member 130) toward the second central hole 115. That is, the first central hole 113 can have a conical shape in which the diameter (inner diameter) of the inner surface 114 continuously decreases in the insertion direction of the pipe (the direction of reference arrow B).

[0074] Here, preferably, the angle between the outer surface 132 of the body 131 of the second collar member 130 and the center line CL should be the same as or greater than the angle between the inner surface 114 of the first central hole 113 and the center line CL.

[0075] The second central hole 115 and the third central hole 117 of the triple contact connection member 110 can have a cylindrical shape. That is, the inner surface 116 of the second central hole 115 and the inner surface 118 of the third central hole 117 can be parallel to the center line CL.

[0076] On the other hand, the fourth central hole 119 of the triple contact connection member 110 can have a shape in which the diameter (inner diameter) of the inner surface 120 continuously decreases from the other end of the triple contact connection member 110 toward the third central hole 117, that is, a shape in which the diameter (inner diameter) of the inner surface 120 continuously decreases from the end facing the second collar member 130 toward the third central hole 117. That is, the fourth central hole 119 can have a conical shape in which the diameter (inner diameter) of the inner surface 120 continuously decreases in the opposite direction of the insertion direction of the pipe (the direction of reference arrow B).

[0077] The angle formed by the center line CL passing through the center of the triple contact connection member 110 and the inclined surface 114 of the first center hole 113 can be smaller than the angle formed by the inclined surface 120 of the fourth center hole 119 and the center line. That is, preferably, the angle between the inner surface 120 of the fourth center hole 119 and the center line CL should be greater than the angle between the inner surface 114 of the first center hole 113 and the center line CL. The inclined angle (angle) of the inner surface 120 of the fourth center hole 119 can be the same as or similar to the inclined angle (angle) of the inclined portion 213 of the stop valve 210 or the tapered portion 313 of the pipe connection member 310 inserted into the fourth center hole 119 and crimped.

[0078] In the triple contact connection member 110, the smallest inner diameter among the diameters (inner diameters) of the inner surface 114 of the first center hole 113 is greater than the diameter of the inner surface 116 of the second center hole 115, the diameter of the inner surface 116 of the second center hole 115 is greater than the diameter (inner diameter) of the inner surface 118 of the third center hole 117, and the smallest inner diameter among the diameters (inner diameters) of the inner surface 120 of the fourth center hole 119 can be the same as the inner diameter of the third center hole 117.

[0079] Referring to Figure 4 , the portion where the first center hole 113 intersects the second center hole 115 does not coincide. That is, the portion of the inner surface 114 of the first center hole 113 having the smallest inner diameter contacts the second center hole 115, and the smallest inner diameter of the first center hole 113 is greater than the inner diameter of the second center hole 115. Thus, a first step portion 113a can be formed at the portion where the first center hole 113 and the second center hole 115 are connected.

[0080] The first step portion 113a formed at the portion where the first center hole 113 and the second center hole 115 are connected can be in surface contact with one end 133 of the second ferrule member 130 and be crimped.

[0081] Also, since the inner diameter of the third center hole 117 is smaller than the inner diameter of the second center hole 115, a second step portion 115a can be formed at the portion where the second center hole 115 and the third center hole 117 are connected. One end 92 of the pipe 90 can be crimped to the second step portion 115a formed at the portion where the second center hole 115 and the third center hole 117 are connected (see Figure 10 part (a)).

[0082] The stop valve 210 can be crimped and connected to the fourth center hole 119 of the triple contact connection member 110.

[0083] Figure 3A portion of the stop valve 210, i.e., a portion connected to the triple contact connection member 110, is shown. The stop valve 210 connected to the triple contact connection member 110 and the nut member 170 can include a connection body 211 having a through hole 215 formed therein, and a stopper 212 integrally formed at a rear end of the connection body 211. The stopper 212 can be formed in a shape extending from an outer surface of the connection body 211 in a circumferential direction of the connection body 211.

[0084] An external thread portion 214 engaged with the internal thread portion 173 of the nut member 170 can be formed on an outer surface of the connection body 211.

[0085] An inclined portion 213 can be formed at one end of the connection body 211 crimped by the inner surface 120 of the fourth central hole 119 of the triple contact connection member 110. Here, an inclination angle (angle) of the inner surface 120 of the fourth central hole 119 can be the same as or similar to an inclination angle (angle) of the inclined portion 213 of the stop valve 210 inserted into the fourth central hole 119 and crimped.

[0086] As shown in Figure 5 , a deformation example of the weldingless joint device 100 of the first embodiment of the present application can include a gasket member 190 disposed at one side of the triple contact connection member 110 facing the second collar member 130. That is, the deformation of the weldingless joint device 100 of the first embodiment of the present application can further include the gasket member 190 disposed between the fourth central hole 119 of the triple contact connection member 110 and the inclined portion 213 of the stop valve 210.

[0087] When the nut member 170 is fastened with the stop valve 210, the gasket member 190 is crimped between the fourth central hole 119 of the triple contact connection member 110 and the inclined portion 213 of the stop valve 210, thereby functioning as a sealing.

[0088] In the weldingless joint device 100 of the first embodiment of the present application, if the nut member 170 is completely fastened with the stop valve 210, the outer surfaces 132, 133 of the second collar member 130 are crimped to the inner surface 114 of the first central hole 113 of the triple contact connection member 110, the outer surface of the stop valve 210, i.e., the inclined portion 213 is crimped to the inner surface 120 of the fourth central hole 119, or the gasket member 190 is crimped to the inner surface 120 of the fourth central hole 119. In this case, the end portion 92 (see (b) of FIG. 1) of the pipe 90 can be crimped to the second stepped portion 115a of the triple contact connection member 110. Figure 10

[0089] Hereinafter, the weldingless joint device 100 of the first embodiment of the present application will be described in detail with reference to Figures 6 to 13 ​A second embodiment of the present application will be described with reference to a non-welded joint device 200. The non-welded joint device 200 is different from the first embodiment of the non-welded joint device 100 in that the non-welded joint device 200 is characterized by replacing the stop valve 210 with a pipe connecting member 310, and includes a pair of nut members 170, a pair of first ferrule members 150, a pair of second ferrule members 130, and a pair of triple contact connecting members 110 positioned on both sides of the pipe connecting member 310.

[0090] For the same contents as the first embodiment of the non-welded joint device 100, the same reference numerals are used, and the description thereof is the same as the first embodiment of the non-welded joint device 100, and thus the repeated description is omitted.

[0091] Referring to Figures 6 to 9 , the nut members 170, the first ferrule members 150, the second ferrule members 130, and the triple contact connecting members 110 positioned on both sides of the pipe connecting member 310 are the same as those in the first embodiment of the non-welded joint device 100.

[0092] The non-welded joint device 200 of the second embodiment of the present application can connect two pipes 90 through the pipe connecting member 310. That is, the non-welded joint device 200 of the second embodiment of the present application can include the pipe connecting member 310 positioned on one side of the triple contact connecting member 110 facing the second ferrule member 130.

[0093] The pipe connecting member 310 can include a fitting portion 311 positioned inside the nut member 170, one end 313 in contact with the fourth central hole 119 of the triple contact connecting member 110, and an outer thread portion 314 formed on the outer surface, and a spacer portion 312 formed on the outer surface of the fitting portion 311 in contact with the nut member 170.

[0094] The fitting portion 311 is formed on both sides of the spacer portion 312, and a tapered portion 313 can be formed on one end of the fitting portion 311.

[0095] The tapered portion 313 can be in contact with the triple contact connecting member 110.

[0096] The tapered portion 313 can be formed on one end of the fitting portion 311 which is press-fitted to the inner surface 120 of the fourth central hole 119 of the triple contact connecting member 110. Here, the inclination angle (angle) of the inner surface 120 of the fourth central hole 119 can be the same as or similar to the inclination angle (angle) of the tapered portion 313 of the pipe connecting member 310 which is inserted into the fourth central hole 119 and is press-fitted.

[0097] Referring to Figure 10In the second embodiment of the present application, if the nut member 170 is completely fastened to the pipe connecting member 310, the outer surfaces 132, 133 of the second ferrule member 130 are crimped to the inner surface 114 of the first central hole 113 of the triple contact connecting member 110, and the outer surface of the fitting portion 311 of the pipe connecting member 310, i.e., the tapered portion 313, can be crimped to the inner surface 120 of the fourth central hole 119. In this case, the end portion 92 of the pipe 90 can be crimped to the second step portion 115a of the triple contact connecting member 110.

[0098] On the other hand, referring to Figures 11 to 13 , the modified example of the second embodiment of the present application can include a gasket member 190 disposed on the side of the triple contact connecting member 110 opposite the second ferrule member 130. That is, the modified example of the second embodiment of the present application can also include a gasket member 190 disposed between the inner surface 120 of the fourth central hole 119 of the triple contact connecting member 110 and the tapered portion 313 of the pipe connecting member 310.

[0099] When the nut member 170 is fastened to the pipe connecting member 310, the gasket member 190 is crimped between the inner surface 120 of the fourth central hole 119 of the triple contact connecting member 110 and the tapered portion 313 of the pipe connecting member 310, thereby functioning as a seal.

[0100] In the second embodiment of the present application, if the nut member 170 is completely fastened to the pipe connecting member 310, the outer surfaces 132, 133 of the second ferrule member 130 are crimped to the inner surface of the first central hole 113 of the triple contact connecting member 110, and the gasket member 190 can be crimped to the inner surface of the fourth central hole 119. In this case, the end portion 92 of the pipe 90 can be crimped to the second step portion 115a of the triple contact connecting member 110.

[0101] As described above, the non-welded joint apparatus 100, 200 of the present application has a triple contact connecting member 110, thereby eliminating the need to form a flared portion at the end of the pipe 90 connected to the stop valve 210. Also, the present application includes a pipe connecting member 310 for connecting two pipes 90, and by forming a tapered portion 313 at one end of the pipe connecting member 310 connected to the triple contact connecting member 110, the need for an additional operation during the connection of two pipes is eliminated. Also, by adding a gasket member 190 between the triple contact connecting member 110 and the stop valve 210 or between the triple contact connecting member 110 and the pipe connecting member 310, the air tightness can be improved.

[0102] While the present application has been described with reference to the specific embodiments thereof, it should be understood by those skilled in the art that various changes can be made and equivalents can be substituted without departing from the true spirit and scope of the application. In addition, many modifications can be made to adapt a particular situation or material to the teachings of the present application without departing from its central scope. Therefore, it is intended that the present application not be limited to the particular embodiments disclosed, but will include all embodiments falling within the scope of the appended claims, both literally and under the doctrine of equivalents.

Claims

1. A solderless joint device, characterized by The nut member includes: a first collar member inside the nut member; a second collar member inside the nut member, disposed on one side of the first collar member; and a triple contact connection member inside the nut member, disposed on one side of the second collar member opposite the first collar member. A stop valve is connected on one side of the triple contact connection member opposite the second collar member.

2. The solderless joint device of claim 1, wherein, A gasket member is included on one side of the triple contact connection member opposite the second collar member.

3. The solderless joint device of claim 2, wherein, A pipe connection member is included on one side of the triple contact connection member opposite the second collar member.

4. The solderless joint device of claim 1, wherein, The pipe connection member includes a fitting portion inside the nut member, one end of which is in contact with the triple contact connection member, and an external thread portion formed on an outer surface thereof, and a spacer portion formed on the outer surface of the fitting portion, which is in contact with the nut member.

5. The solderless joint device of claim 4, wherein, The fitting portion is formed on both sides of the spacer portion, and a tapered portion is formed on one end of the fitting portion.

6. The solderless joint device of claim 5, wherein, The tapered portion is in contact with the triple contact connection member.

7. The solderless joint device of claim 6, wherein, A gasket member is included between the triple contact connection member and the pipe connection member.

8. The solderless joint device of claim 7, wherein, An outer surface of the triple contact connection member is cylindrical or cylindrical, and four central holes of different sizes or shapes are formed inside the triple contact connection member.

9. The solderless joint device according to any one of claims 2 to 8, characterized in that The four central holes formed inside the triple contact connection member include a first central hole for disposing the second collar member, a second central hole connected to the first central hole for disposing a pipe, a third central hole connected to the second central hole and smaller in size than the second central hole, and a fourth central hole connected to the third central hole for disposing the gasket member, the stop valve, or the pipe connection member.

10. The solderless joint device of claim 9, wherein, An inner diameter of the first central hole continuously decreases from one end of the triple contact connection member toward the second central hole, the second central hole and the third central hole are cylindrical, and an inner diameter of the fourth central hole continuously decreases from the other end of the triple contact connection member toward the third central hole.

11. The solderless joint device of claim 10, wherein, The smallest inner diameter among the inner diameters of the first central hole is greater than the inner diameter of the second central hole, the inner diameter of the second central hole is greater than the inner diameter of the third central hole, and the smallest inner diameter among the inner diameters of the fourth central hole is the same as the inner diameter of the third central hole.

12. The solderless joint device of claim 11, wherein, One end of the second collar member is crimped to a first step portion formed at a portion where the first central hole and the second central hole are connected, and one end of the pipe is crimped to a second step portion formed at a portion where the second central hole and the third central hole are connected.

13. The solderless joint device of claim 12, wherein, An angle formed by a straight line passing through the center of the triple contact connection member and an inclined surface of the first central hole is smaller than an angle formed by an inclined surface of the fourth central hole.

14. The solderless joint device of claim 13, wherein, An outer surface of the second collar member is crimped to an inner surface of the first central hole, an outer surface of the stop valve or the pipe connection member is crimped to an inner surface of the fourth central hole, or the gasket member is crimped to the inner surface of the fourth central hole.

15. The solderless joint device of claim 13, wherein, ​

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