Fluid connection assembly, and connection and separation tool for a fluid connection assembly

Abstract

1. A fluid connection assembly comprising: a connector body including a first end, a second end, a through hole, and a first radially outward surface having a groove, the groove including a second radially outward surface and a first opening; and a retainer configured for removably connection to the connector body, the retainer including a first engaging member including a first radially inward surface and a first projection extending from the first radially inward surface and configured to extend through the first opening and into the through hole; and a second engaging member including a second radially inward surface, the second engaging member being connected to the first engaging member by a plurality of pivotally connected arms.

Description

Technical Field

[0001] The present disclosure relates to fluid connectors, and more particularly to a fluid connection assembly including a retainer that reduces the insertion force required for assembly and enables quick assembly without the need for tools.

Background Art

[0002] Fluid connectors, fluid connections, and fluid connection assemblies are essential components for many applications, particularly automotive applications. Since automotive systems are composed of various components such as radiators, transmissions, engines, etc., fluids need to be able to move not only within each component but also between components. An example of a fluid that moves between components is transmission fluid that moves from a transmission to a transmission oil cooler to lower the temperature of the transmission fluid. Fluids mainly move between components through flexible or rigid hoses connected to each component by fluid connectors. Such fluid connectors typically include a retaining clip, retaining ring clip, or snap ring mounted on the connector body that is adapted to snap behind the raised shoulder of the tube when the tube is fully inserted into the connector body. However, during the assembly process, it is difficult to attach the retaining clip to the connector body, and if the retaining clip is not properly attached, the structural integrity of the retaining clip may be at risk. In addition, the force required to engage the tube with the connector body and overcome the radial force of the retaining clip is very large in current designs. Also, since the retaining clip is very thin and small, it is easy to lose if dropped or forgotten. Furthermore, some connection assembly solutions are time-consuming to fix and require tools for the assembly process.

[0003] Therefore, there has been a long-felt and urgent need for a fluid connection assembly that is decomposable, easy to assemble, and includes a retainer that reduces the insertion force required to assemble the fluid connector.

Summary of the Invention

[0004] According to the aspects shown in this specification, there is provided a connector body including a first end portion, a second end portion, a through hole, and a groove, the groove including a second radially outward surface and a first opening, and a first radially outward surface; a retainer configured to be removably connectable to the connector body, the retainer including a first engaging member including a first radially inward surface and a first protrusion configured to extend from the first radially inward surface and extend through the first opening into the through hole; and a second engaging member including a second radially inward surface, wherein the second engaging member is connected to the first engaging member by a plurality of pivotally connected arms, and a fluid connection assembly is provided.

[0005] In some embodiments, the retainer is configured to be engageable with the groove. In some embodiments, the first radially inner surface and the second radially inner surface abut against the second radially outer surface. In some embodiments, the groove further comprises a second opening, and the second engagement member further comprises a second protrusion configured to extend from the second radially inner surface and through the second opening into the through hole. In some embodiments, the first protrusion comprises a first surface facing in a first axial direction, a second surface facing in a second axial direction, and a third surface connecting the first surface and the second surface and facing radially inward. In some embodiments, the first surface is perpendicular to the first radially inner surface, and the second surface is not perpendicular to the first radially inner surface. In some embodiments, the plurality of pivotally connected arms comprises a first arm pivotally connected to the first engagement member, a second arm pivotally connected to the first arm, and a third arm pivotally connected to the second arm and pivotally connected to the second engagement member. In some embodiments, the first arm extends radially outward in a first circumferential direction from the first engagement member, and the third arm extends radially inward in the first circumferential direction from the second arm. In some embodiments, the retainer further comprises at least one hook extending radially outward from at least one of the first engagement member and the second engagement member. In some embodiments, to remove the retainer from the connector body, the first engagement member and the second engagement member are displaced radially outward to remove the first protrusion from the first opening. In some embodiments, the fluid connection assembly further comprises a connection tool including a frustoconical radially outer surface and a protrusion configured to engage with the first end to enable connection of the retainer to the connector body.

[0006] According to the aspects shown in this specification, a connector body includes a first end, a second end, a through hole, and a groove, the groove including a second radially outer surface, a first opening, and a second opening, and a first radially outer surface; a retainer configured to be removably connectable to the connector body, the retainer including a first engaging member including a first radially inner surface and a first protrusion configured to extend from the first radially inner surface and through the first opening into the through hole; a second engaging member including a second radially inner surface and a second protrusion configured to extend from the second radially inner surface and through the second opening into the through hole; and a second engaging member connected to the first engaging member by a plurality of first pivotally connected arms; and a tube including a shoulder, the retainer fixing the tube to the connector body in a locked state. A fluid connection assembly is provided.

[0007] In some embodiments, in the locked state, the retainer engages with the groove. In some embodiments, in the locked state, the first radially inward surface and the second radially inward surface abut against the second radially outward surface. In some embodiments, at least one of the first protrusion and the second protrusion includes a first surface facing in a first axial direction, a second surface facing in a second axial direction, and a third surface connecting the first surface and the second surface and facing radially inward. In some embodiments, the first surface is perpendicular to the first radially inward surface, and the second surface is not perpendicular to the first radially inward surface. In some embodiments, the plurality of first pivotally connected arms includes a first arm pivotally connected to the first engaging member, a second arm pivotally connected to the first arm, and a third arm pivotally connected to the second arm and pivotally connected to the second engaging member. In some embodiments, the first arm extends radially outward in a first circumferential direction from the first engaging member, and the third arm extends radially inward in the first circumferential direction from the second arm. In some embodiments, the retainer further includes a second plurality of pivotally connected arms connecting the first engaging member to the second engaging member, the first plurality of pivotally connected arms extending in a first circumferential direction from the first engaging member, and the second plurality of pivotally connected arms extending in a second circumferential direction opposite to the first circumferential direction from the first engaging member. In some embodiments, the retainer further includes at least one hook extending radially outward from at least one of the first engaging member and the second engaging member.

[0008] According to the aspects shown in this specification, a separation tool for a fluid connection assembly is provided, comprising a first end, a second end, a through hole extending from the first end to the second end, a first section, a second section connected to the first section, a first radially outward surface formed by at least one of the first section and the second section and extending from the first end to the second end, and at least one protrusion extending axially from the second end and including a ramp surface.

[0009] In some embodiments, the first radially outward surface has a variable diameter from the first end to the second end. In some embodiments, the first radially outward surface includes a constant diameter from the first end to the second end. In some embodiments, the second section is hingedly connected to the first section. In some embodiments, the second section is connected to the first section via a living hinge. In some embodiments, the living hinge projects radially outward from the first radially outward surface. In some embodiments, the at least one protrusion further comprises a second radially outward surface. In some embodiments, the ramp surface extends radially inward in a first circumferential direction from the second radially outward surface. In some embodiments, the second radially outward surface comprises a boss extending radially outward. In some embodiments, the boss is spherical. In some embodiments, the first radially outward surface has a first diameter, the second radially outward surface has a second diameter, and the second diameter is equal to the first diameter.

[0010] According to the aspects shown in this specification, a separation tool for a fluid connection assembly including a connector body, a retainer, and a tube configured to be lockable to the connector body by the retainer, the separation tool having a first end, a second end, a through hole extending from the first end to the second end, a first section, a second section pivotally connected to the first section, a first radially outward surface formed by at least one of the first section and the second section, a first radially outward surface extending from the first end to the second end, and a plurality of protrusions extending axially from the second end, the plurality of protrusions being configured such that the plurality of protrusions can displace the retainer radially outward with respect to the connector body, the separation tool including at least a first protrusion connected to the first section and including a first ramp surface, and a second protrusion connected to the second section and circumferentially spaced from the first protrusion, the second protrusion including a second ramp surface, is provided.

[0011] In some embodiments, the first radially outward surface has a variable diameter from the first end to the second end. In some embodiments, the second section is connected to the first section via a living hinge. In some embodiments, the living hinge projects radially outward from the first radially outward surface. In some embodiments, the first protrusion has a second radially outward surface, the first ramp surface extends radially inward in a first circumferential direction from the second radially outward surface, the second protrusion has a third radially outward surface, and the second ramp surface extends radially inward in the first circumferential direction from the third radially outward surface. In some embodiments, the through hole of the separation tool is configured to be axially and radially engageable with the tube. In some embodiments, the second radially outward surface has a boss extending radially outward of the first radially outward surface, and the third radially outward surface has a boss extending radially outward of the second radially outward surface. In some embodiments, at least one of the first boss and the second boss is spherical. In some embodiments, the first radially outward surface has a first diameter, the second radially outward surface has a second diameter equal to the first diameter, and the third radially outward surface has a third diameter equal to the second diameter.

[0012] According to the aspects shown in this specification, a fluid connection assembly or fluid quick connector is provided that includes a connector body, a retainer, and a tube. In some embodiments, the retainer is a compliant plastic retainer. The fluid quick connector provides quick connection by inserting the tube into the fluid line with low force during the assembly process and / or assembly line conditions. Further, the fluid quick connector enables the removal process of the tube to be performed with low force, facilitating maintenance. The fluid quick connector provides the user with an assembly that enables connection of the fluid line without the need for tools or other hardware. The retainer reduces the insertion force for tube connection and enables the removal process to be performed with low force. The fluid quick connector also enables disassembly and maintenance.

[0013] In some embodiments, the fluid connection assembly further includes a removal or separation tool configured to engage with the tube, the retainer, and the connector body to remove the retainer from the shoulder of the tube. In some embodiments, the separation tool includes at least one protrusion having a ramp surface for radially displacing the engagement member of the retainer outward. In some embodiments, the at least one protrusion also includes a boss raised on the radially outward surface for full clearance of the inclined retaining teeth (i.e., engagement members) of the retainer. In some embodiments, the separation tool includes a first section hinge-connected to a second section, thereby enabling operation with one hand. The hinged design allows the tool to also engage radially with the tube (i.e., the two sections can be opened and placed around the tube, and at that point the two sections can be closed together around the tube).

[0014] In some embodiments, the fluid connection assembly further comprises a compliant retaining ring attachment tool or connection tool configured to engage with the connector body such that the retainer can be easily assembled to the connector body. The connection tool comprises a radially outward frustoconical surface and is configured to engage with the connector body. The retainer is slid onto the connector body over the connection tool. Using the connection tool, the joint of the retaining ring can be fully expanded to slide the retaining ring over the connector body.

[0015] The retainer comprises flexure points such as a plurality of joints that allow the retainer to move and releasably engage with the tube. In some embodiments, the retainer comprises one or more loops aligned with respective engagement members or teeth to allow removal or disengagement of the retainer from the tube and / or the connector body. Each of the engagement members or teeth comprises an inclined surface designed to engage with the shoulder of the tube upon insertion of the tube into the connector body. Also, the inclined surface reduces the insertion force of the tube and enables more ergonomic assembly. Each of the engagement members comprises a flat back surface on the opposite side of the inclined surface and engages with the shoulder of the tube in the locked position to prevent disassembly. In some embodiments, the retainer comprises a one-piece plastic ring-shaped design. The retainer can be used with various styles of tube shoulder types.

[0016] These and other objects, features, and advantages of the present disclosure will become readily apparent by considering the following detailed description of the present disclosure in conjunction with the drawings and the appended claims.

Brief Description of the Drawings

[0017] Various embodiments are disclosed by way of example only with reference to the accompanying schematic drawings in which corresponding reference numerals refer to corresponding parts.

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DETAILED DESCRIPTION OF THE INVENTION

[0018] First, it should be recognized that like reference numerals in different drawings identify the same or functionally similar structural elements. It should be understood that the claims are not limited to the disclosed embodiments.

[0019] Furthermore, it should be understood that the present disclosure is not limited to the specific methods, materials, and variations described, and thus may naturally vary. It should also be understood that the terms used herein are for the purpose of describing particular embodiments only and are not intended to limit the scope of the claims.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains. It should be understood that methods, apparatus, or materials similar or equivalent to those described herein may be used in the practice or testing of embodiments. The assemblies of the present disclosure may be driven by hydraulic, electronic, pneumatic, and / or spring means.

[0021] The term "substantially" is synonymous with words such as "near", "very near", "about", "approximately", "roughly", "approximating", "close", "essentially", "adjacent", "in the vicinity", etc., and it should be recognized that such words may be used interchangeably when they appear in the specification and claims. The term "proximate" is synonymous with words such as "nearby", "close", "adjacent", "neighboring", "immediate", "next to", etc., and it should be understood that such words may be used interchangeably when they appear in the specification and claims. The term "about" is intended to mean a value within 10 percent of the specified value.

[0022] It should be understood that the use of "or" in this application relates to a "non-exclusive" combination, unless otherwise specified. For example, in the case of "Item x is A or B", it is understood to mean either (1) or (2) below. (1) Item x is only one of A and B. (2) Item x is both A and B. In other words, the word "or" is not used to define an "exclusive or" combination. For example, for the statement "Item x is A or B", an "exclusive or" combination requires that x is only one of A and B. Further, the "and / or" used here is intended to mean a grammatical conjunction used to indicate that one or more of the listed elements or conditions may be included or may occur. For example, a device comprising a first element, a second element and / or a third element is intended to be interpreted as any one of the following structural combinations. That is, a device comprising the first element, a device comprising the second element, a device comprising the third element, a device comprising the first and second elements, a device comprising the first and third elements, a device comprising the first, second, and third elements, or a device comprising the second and third elements.

[0023] Furthermore, as used herein, the expressions "comprising at least one of" and "comprising at least one" in combination with a system or element are intended to mean that the system or element includes one or more of the elements listed after that expression. For example, an apparatus comprising at least one of a first element, a second element, and a third element is intended to be construed as any one of the following structural combinations. That is, an apparatus comprising the first element, an apparatus comprising the second element, an apparatus comprising the third element, an apparatus comprising the first and second elements, an apparatus comprising the first and third elements, an apparatus comprising the first, second, and third elements, or an apparatus comprising the second and third elements. A similar interpretation is intended when the expression "used with at least one of" is used herein. Furthermore, as used herein, "and / or" is intended to mean a grammatical conjunction used to indicate that one or more of the listed elements or conditions may be included or occur. For example, an apparatus comprising a first element, a second element, and / or a third element is intended to be construed as any one of the following structural combinations. That is, an apparatus comprising the first element, an apparatus comprising the second element, an apparatus comprising the third element, an apparatus comprising the first and second elements, an apparatus comprising the first and third elements, an apparatus comprising the first, second, and third elements, or an apparatus comprising the second and third elements.

[0024] It should be recognized that the term "tube" as used herein is synonymous with hose, pipe, channel, conduit, tube end formation, or any other suitable pipe flow used in hydraulics and fluid mechanics. Furthermore, it should be recognized that the term "tube" may mean a rigid or flexible conduit of any material suitable for containing and allowing the flow of gas or liquid.

[0025] Turning now to the drawings, FIG. 1 is a front perspective view of the fluid connection assembly 10 in the locked state. FIG. 2 is an exploded front perspective view of the fluid connection assembly 10. The fluid connection assembly 10 generally includes a retainer 20, a tube 80, and a connector body 40. The following description is to be interpreted in light of FIGS. 1-2.

[0026] The tube 80 includes an end 82, a section 83, a bead or shoulder 87, a section 89, an end 92, and a through hole 94. The through hole 94 extends through the tube 80 from the end 82 to the end 92. The section 83 is disposed between the end 82 and the shoulder 87 and includes a radially outer surface 84. The radially outer surface 84 includes a substantially constant diameter. In some embodiments, the radially outer surface 84 includes a frustoconical taper or a curved surface proximate to the end 82 (see FIG. 4). The shoulder 87 is disposed between the section 83 and the section 89 and includes a surface 86 and a surface 88. In some embodiments, the surface 86 is an axial surface that at least partially faces in the axial direction AD1, and the surface 88 is an axial surface that at least partially faces in the axial direction AD2. In some embodiments, the surface 86 is a frustoconical surface that extends radially inward in the axial direction AD1 from the radially outer surface of the shoulder 87. For example, the surface 86 may be a straight conical shape, with the diameter increasing in the axial direction AD2. In some embodiments, the surface 86 may include a straight portion and a conical or frustoconical portion. The section 89 is disposed between the shoulder 87 and the end 92 and includes a radially outer surface 90. The radially outer surface 90 includes a substantially constant diameter. The tube 80 is specifically configured to be inserted into the connector body 40 with the end 82 leading. The tube 80 is inserted into the connector body 40 until the section 83, or the radially outer surface 84, engages the seal 62 (see FIG. 4). The shoulder 87 is axially spaced outside the connector body 40, at which point the retainer 20 is assembled and secures the tube 80 to the connector body 40, as will be described in more detail below. The tube 80 may be any conventional tube or tube end formation that includes a bead, a radially extending protrusion or flange, or a ramp profile, which extends radially outward and axially on the outer surface of the tube and secures the tube within the connector body. It should be appreciated that in some embodiments, the tube 80 includes metal. In some embodiments, the tube 80 includes a polymer. In some embodiments, the tube 80 includes ceramic.

[0027] Figure 3A is a rear perspective view of the retainer 20. Figure 3B is a front elevation view of the retainer 20. Figure 4 is a cross-sectional view of the fluid connection assembly 10 generally along line 4-4 of FIG. 1. Figure 5 is a cross-sectional view of the fluid connection assembly generally along line 5-5 of FIG. 1. The following description is to be interpreted in light of FIGS. 1-5.

[0028] The retainer 20 is generally ring-shaped and includes a hole 21 and a plurality of engagement members, such as engagement members 22A-D. In some embodiments, the retainer 20 is a continuous ring. In some embodiments, the retainer 20 comprises metal. In some embodiments, the retainer 20 comprises a polymer. In some embodiments, the retainer 20 comprises ceramic.

[0029] The engaging member 22A includes a radially inner surface 23A and a protrusion 24A extending radially inward from the radially inner surface 23A in the radial direction RD2. The radially inner surface 23A is configured to be engageable with the connector body 40, specifically, to be able to abut against the radially outer surface 53 of the groove 54. The protrusion 24A is configured to extend through an opening of the connector body 40, for example, the opening 55A, and be engageable with the shoulder 87 of the tube 80. The protrusion 24A includes an axial surface 25A, a radially inner surface 26A, and an axial surface 27A. In some embodiments, the surface 25A is not perpendicular to the radially inner surface 23A, that is, the surface 25A extends radially inward in the axial direction AD1 (as best shown in FIGS. 2 and 4). The angle of the surface 25A facilitates the outward radial expansion of the engaging member 22A and the retainer 20 when the tube 80 is inserted into the connector body 40. In some embodiments, the surface 27A is perpendicular to the radially inner surface 23A, thereby preventing the tube 80 from being removed from the connector body 40. The radially inner surface 26A connects the surface 25A and the surface 27A. In some embodiments, the radially inner surface 26A is parallel to the radially inner surface 23A and / or perpendicular to the surface 27A. In some embodiments, the engaging member 22A further includes a hook or loop 28A extending radially outward therefrom. The hook 28A may be used to displace the engaging member 22A radially outward and disengage it from the engagement with the shoulder 87 of the tube 80 and / or the opening 55A of the connector body 40 (that is, the hook 28A can be pulled in the radial direction RD2 using a tool).

[0030] The engaging member 22A is connected to the engaging member 22B via a plurality of arms, for example, arms 29A, 30A, and 31A. The arm 29A is pivotally connected to the engaging member 22A. The arm 29A extends radially outward from the radially inward surface 23A in the circumferential direction CD1. The arm 30A is pivotally connected to the arm 29A and extends from the arm 29A in the circumferential direction CD1. The arm 31A is pivotally connected to the arm 30A and extends radially inward from the arm 30A in the circumferential direction CD1. The arm 31A is also pivotally connected to the engaging member 22B. It should be recognized that the pivotable connection can be embodied as a hinge, a living hinge, or another suitable means. For example, the arm 29A is pivotally connected to the engaging member 22A via a living hinge, the arm 30A is pivotally connected to the arm 29A via a living hinge, the arm 31A is pivotally connected to the arm 30A via a living hinge, and the arm 31A is connected to the engaging member 22B via a living hinge. Since the engaging member 22A is connected to the engaging member 22B via a plurality of pivotally connected arms, it can be said that the engaging member 22A and the engaging member 22B are pivotally connected.

[0031] The engaging member 22B includes a radially inner surface 23B and a protrusion 24B extending radially inward in the radial direction RD2 from the radially inner surface 23B. The radially inner surface 23B is configured to be engageable with the connector body 40, specifically, to be able to contact the radially outer surface 53 of the groove 54. The protrusion 24B is configured to extend through an opening of the connector body 40, for example, the opening 55B, and to be engageable with the shoulder 87 of the tube 80. The protrusion 24B includes an axial surface 25B, a radially inner surface 26B, and an axial surface 27B. In some embodiments, the surface 25B is not perpendicular to the radially inner surface 23B, that is, the surface 25B extends radially inward in the axial direction AD1 (substantially the same as the protrusion 24A). The angle of the surface 25B promotes the outward radial expansion of the engaging member 22B and the retainer 20 when the tube 80 is inserted into the connector body 40. In some embodiments, the surface 27B is perpendicular to the radially inner surface 23B, thereby preventing the tube 80 from being removed from the connector body 40. The radially inner surface 26B connects the surface 25B and the surface 27B. In some embodiments, the radially inner surface 26B is parallel to the radially inner surface 23B and / or perpendicular to the surface 27B. In some embodiments, the engaging member 22B further includes a hook or loop 28B extending radially outward therefrom. The hook 28B may be used to displace the engaging member 22B radially outward and disengage it from the engagement with the shoulder 87 of the tube 80 and / or the opening 55B of the connector body 40 (that is, the hook 28B can be pulled in the radial direction RD2 using a tool).

[0032] The engaging member 22B is connected to the engaging member 22C via a plurality of arms, for example, arms 29B, 30B, and 31B. The arm 29B is pivotally connected to the engaging member 22B. The arm 29B extends radially outward from the radially inward surface 23B in the circumferential direction CD1. The arm 30B is pivotally connected to the arm 29B and extends from the arm 29B in the circumferential direction CD1. The arm 31B is pivotally connected to the arm 30B and extends radially inward from the arm 30B in the circumferential direction CD1. The arm 31B is also pivotally connected to the engaging member 22C. It should be recognized that the pivotal connection can be embodied as a hinge, a living hinge, or another suitable means. For example, the arm 29B is pivotally connected to the engaging member 22B via a living hinge, the arm 30B is pivotally connected to the arm 29B via a living hinge, the arm 31B is pivotally connected to the arm 30B via a living hinge, and the arm 31B is connected to the engaging member 22C via a living hinge. Since the engaging member 22B is connected to the engaging member 22C via a plurality of pivotally connected arms, it can be said that the engaging member 22B and the engaging member 22C are pivotally connected.

[0033] The engaging member 22C includes a radially inner surface 23C and a protrusion 24C extending radially inward from the radially inner surface 23C in the radial direction RD2. The radially inner surface 23C is connected to be engageable with the connector body 40, specifically, to be able to abut against the radially outer surface 53 of the groove 54. The protrusion 24C is configured to extend through an opening of the connector body 40, for example, the opening 55C, and engage with the shoulder 87 of the tube 80. The protrusion 24C includes an axial surface 25C, a radially inner surface 26C, and an axial surface 27C. In some embodiments, the surface 25C is not perpendicular to the radially inner surface 23C, that is, the surface 25C extends radially inward in the axial direction AD1 (as best shown in FIGS. 2 and 4). The angle of the surface 25C facilitates the outward radial expansion of the engaging member 22C and the retainer 20 when the tube 80 is inserted into the connector body 40. In some embodiments, the surface 27C is perpendicular to the radially inner surface 23C, thereby preventing the tube 80 from being removed from the connector body 40. The radially inner surface 26C connects the surface 25C and the surface 27C. In some embodiments, the radially inner surface 26C is parallel to the radially inner surface 23C and / or perpendicular to the surface 27C. In some embodiments, the engaging member 22C further includes a hook or loop 28C extending radially outward therefrom. The hook 28C may be used to displace the engaging member 22C radially outward and disengage it from the engagement with the shoulder 87 of the tube 80 and / or the opening 55C of the connector body 40 (that is, the hook 28C can be pulled in the radial direction RD2 using a tool).

[0034] The engaging member 22C is connected to the engaging member 22D via a plurality of arms, for example, arms 29C, 30C, and 31C. The arm 29C is pivotally connected to the engaging member 22C. The arm 29C extends radially outward from the radially inward surface 23C in the circumferential direction CD1. The arm 30C is pivotally connected to the arm 29C and extends from the arm 29C in the circumferential direction CD1. The arm 31C is pivotally connected to the arm 30C and extends radially inward from the arm 30C in the circumferential direction CD1. The arm 31C is also pivotally connected to the engaging member 22D. It should be recognized that the pivotal connection can be embodied as a hinge, a living hinge, or another suitable means. For example, the arm 29C is pivotally connected to the engaging member 22C via a living hinge, the arm 30C is pivotally connected to the arm 29C via a living hinge, the arm 31C is connected to the arm 30C via a living hinge, and the arm 31C is connected to the engaging member 22D via a living hinge. Since the engaging member 22C is connected to the engaging member 22D via a plurality of pivotally connected arms, it can be said that the engaging member 22C and the engaging member 22D are pivotally connected.

[0035] The engaging member 22D includes a radially inner surface 23D and a protrusion 24D extending radially inward from the radially inner surface 23D in the radial direction RD2. The radially inner surface 23D is connected to be engageable with the connector body 40, specifically, to be abutted against the radially outer surface 53 of the groove 54. The protrusion 24D is configured to extend through an opening of the connector body 40, for example, the opening 55D, and be engageable with the shoulder 87 of the tube 80. The protrusion 24D includes an axial surface 25D, a radially inner surface 26D, and an axial surface 27D. In some embodiments, the surface 25D is not perpendicular to the radially inner surface 23D, that is, the surface 25D extends radially inward in the axial direction AD1 (as best shown in FIGS. 2 and 4). The angle of the surface 25D facilitates the outward expansion of the engaging member 22D and the retainer 20 when the tube 80 is inserted into the connector body 40. In some embodiments, the surface 27D is perpendicular to the radially inner surface 23D, thereby preventing the tube 80 from being removed from the connector body 40. The radially inner surface 26D connects the surface 25D and the surface 27D. In some embodiments, the radially inner surface 26D is parallel to the radially inner surface 23D and / or perpendicular to the surface 27D. In some embodiments, the engaging member 22D further includes a hook or loop 28D extending radially outward therefrom. The hook 28D may be used to displace the engaging member 22D radially outward and disengage it from the engagement with the shoulder 87 of the tube 80 and / or the opening 55D of the connector body 40 (that is, the hook 28D can be pulled in the radial direction RD2 using a tool).

[0036] The engaging member 22D is connected to the engaging member 22A via a plurality of arms, such as arms 29D, 30D, and 31D. The arm 29D is pivotally connected to the engaging member 22D. The arm 29D extends radially outward from the radially inward surface 23D in the circumferential direction CD1. The arm 30D is pivotally connected to the arm 29D and extends from the arm 29D in the circumferential direction CD1. The arm 31D is pivotally connected to the arm 30D and extends radially inward from the arm 30D in the circumferential direction CD1. The arm 31D is also pivotally connected to the engaging member 22A. It should be recognized that the pivotal connection can be embodied as a hinge, a living hinge, or another suitable means. For example, the arm 29D is pivotally connected to the engaging member 22D via a living hinge, the arm 30D is pivotally connected to the arm 29D via a living hinge, the arm 31D is connected to the arm 30D via a living hinge, and the arm 31D is connected to the engaging member 22A via a living hinge. Since the engaging member 22D is connected to the engaging member 22A via a plurality of pivotally connected arms, it can be said that the engaging member 22D and the engaging member 22A are pivotally connected.

[0037] The connector body 40 includes a through hole 41 extending from an end 42 to an end 44, a radially inner surface 46, a radially inner surface 48, a groove 50, a radially outer surface 52, a groove 54, a head 58, and a radially outer surface 60. The connector body 40 is configured to be connected to a component filled with or through which fluid flows. For example, the connector body 40 may be connected to a refrigeration compressor or a transmission through the radially outer surface 60 which may have a male thread. The connector body 40 is screwed into the screw hole of the compressor via the head 58 (e.g., using a wrench) and then filled with refrigerant fluid. In some embodiments, the head 58 is hexagonal. However, it should be recognized that the head 58 can have any geometric shape suitable for applying torque to the connector body 40. Another component to which the fluid connector 10, specifically the connector body 40, can be attached is a condenser, an evaporator, or a pump. It should be recognized that the fluid connector 10 can be used in various other components, assemblies, and sub-assemblies where fluid connection is desired. The radially outer surface 60 may further include a groove 56. A seal or O-ring 64 is disposed within the groove 56 to form a fluid-tight seal between the connector body 40 and the component to which the connector body 40 is connected.

[0038] The seal 62 is disposed within the connector body 40. Specifically, the seal 62 is disposed within the groove 50. The groove 50 is disposed on the radially inner surface 48. In some embodiments, the seal 62 is an O-ring. In some embodiments, the radially inner surface 46 is a cylindrical surface extending from the end 44 to a surface 47. The radially inner surface 46 is connected to the radially inner surface 48 via the surface 47. In some embodiments, the surface 47 is a frustum-shaped surface connecting the generally cylindrical radially inner surface 46 to the generally cylindrical radially inner surface 48. In some embodiments, the surface 47 is an axial surface facing in the axial direction AD2. In some embodiments, the radially inner surface 48 is a cylindrical surface extending from the end 42 to the surface 47.

[0039] The groove 54 is disposed on the radially outer surface 52 and has a radially outer surface 53. The diameter of the radially outer surface 53 is smaller than the diameter of the radially outer surface 52. The groove 54 is axially disposed between the end 44 and the head 58. In some embodiments, the groove 54 is disposed immediately adjacent to the head 58. The groove 54 is configured to engage with the retainer 20, specifically the radially inner surfaces 23A - D, to connect the retainer 20 to the connector body 40. The groove 54 further includes at least one opening, such as openings 55A - D. The openings 55A - D are configured to be respectively engageable with the engagement members 22A - D, particularly the protrusions 24A - D, such that the retainer 20 can engage with the shoulder 87 to lock the tube 80 within the connector body 40. In some embodiments, the connector body 40 comprises metal. In some embodiments, the connector body 40 comprises a polymer. In some embodiments, the connector body 40 comprises ceramic.

[0040] To assemble the fluid connection assembly 10, the retainer 20 is placed on the connector body 40 such that the radially inner surfaces 23A - D engage with the radially outer surface 53 of the groove 54 and the protrusions 24A - D engage with the openings 55A - D (see FIGS. 4 - 5). The retainer 20 should be oriented such that the surfaces 25A - D face the axial direction AD1 and the surfaces 27A - D face the axial direction AD2. To assemble the retainer 20 onto the connector body 40, the engagement members 22A - D should be displaced radially outward in the radial direction RD1 such that the protrusions 24A - D pass through the radially outer surface 52, at which point the retainer 20 is slid axially in the axial direction AD1 on the connector body 40. This can be done using a tool or tool 100 that engages with the hooks 28A - D for radial expansion, as will be described in more detail below.

[0041] Next, the tube 80 is inserted axially in the AD1 direction into the connector body 40 with the end 82 first. The radially outer surface 84 engages with the seal 62, and the section 83 is disposed proximate to the radially inner surface 48 inside the connector body 40. The shoulder 87 engages with the surfaces 25A - D of the protrusions 24A - D, and pushes the engagement members 22A - D radially outward in the RD1 direction. When the shoulder 87 passes through the radially inner surfaces 26A - D (i.e., when it is axially disposed between the protrusions 24A - D and the surface 47), the engagement members 22A - D snap back radially inward in the RD2 direction to form a locked state. In the locked state, the shoulder 87 engages with the surface 47 and the surfaces 27A - D. The surface 47 prevents the shoulder 87, and thus the tube 80, from being displaced in the AD1 direction, and the surfaces 27A - D prevent the shoulder 87, and thus the tube 80, from being displaced in the AD2 direction relative to the connector body 40. Thus, the engagement of the retainer 20 with the connector body 40 and the tube 80 prevents displacement of the tube 80 relative to the connector body 40 in the AD1 and AD2 axial directions and the RD1 and RD2 radial directions. To release the lock of the fluid connection assembly 10, the engagement members 22A - D are displaced radially outward in the RD1 direction, the retainer 20 is expanded until the protrusions 24A - D disengage from the shoulder 87, and at that point the tube 80 can be removed from the connector body 40.

[0042] FIG. 6 is a perspective view of the connection or assembly tool 100. FIG. 7 is a perspective view of the connection tool 100 engaged with the connector body 40. FIG. 8 is a cross - sectional view of the connection tool 100 engaged with the connector body 40 generally along line 8 - 8 of FIG. 7. The following description is to be interpreted in light of FIGS. 1 - 8.

[0043] The connection tool 100 generally includes an end portion 102, an end portion 104, and a radially outward surface 106 extending from the end portion 102 to the end portion 104. The radially outward surface 106 is frustoconical and increases in diameter in the axial direction AD1. Thus, the diameter of the radially outward surface 106 at the end portion 102 is larger than the diameter of the radially outward surface 106 at the end portion 104. The connection tool 100 further includes a protrusion 108 extending in the axial direction AD1 from the end portion 102. The protrusion 108 includes a radially outward surface 110. The radially outward surface 110 has a diameter smaller than the diameter of the radially outward surface 106 at the end portion 102. In some embodiments, the connection tool 100 further includes a through hole 101. In some embodiments, the through hole 101 is frustoconical (see FIG. 8). In some embodiments, the through hole 101 is cylindrical.

[0044] The connection tool 100 is configured to be engageable with the connector body 40 so that the retainer 20 can be assembled to the connector body 40. As best shown in FIGS. 7-8, the connection tool 100 engages the connector body 40 by inserting the protrusion 108 into the connector body 40 until the end portion 102 abuts the end portion 44. The radially outward surface 110 engages or abuts the radially inward surface 46. In some embodiments, the diameter of the radially outward surface 106 at the end portion 102 is larger than the diameter of the radially outward surface 52. In some embodiments, the diameter of the radially outward surface 106 at the end portion 102 is equal to the diameter of the radially outward surface 52. When fully engaged, the retainer 20 is slid axially along the connection tool 100 in the axial direction AD1. As the retainer 20 is displaced axially along the connection tool 100 in the axial direction AD1, the protrusions 24A-D, particularly the radially inward surfaces 26A-D, engage the radially outward surface 106, thereby displacing the engaging members 22A-D radially outward in the radial direction RD1. When the retainer 20 reaches the end portion 102, the retainer 20 expands and the radially inward surfaces 26A-D pass through the radially outward surface 52, allowing the retainer 20 to slide into the groove 54. When the retainer 20 is properly positioned within the groove 54, the connection tool 100 can be removed from the connector body 40, and subsequently the tube 80 can be inserted into the connector body 40.

[0045] FIG. 9A is a front perspective view of the separation tool 120. FIG. 9B is a rear perspective view of the separation tool 120. FIG. 10 is a perspective view of the separation tool 120 engaged with the fluid connection assembly 10. FIG. 11 is a cross-sectional view of the separation tool 120 engaged with the fluid connection assembly 10 generally along line 11-11 of FIG. 10. FIG. 12 is a cross-sectional view of the separation tool 120 engaged with the fluid connection assembly 10 generally along line 12-12 of FIG. 10. The following description is to be interpreted in light of FIGS. 1-5 and 9A-12.

[0046] The separation tool 120 generally includes a section 120A, a section 120B, an end 122, an end 124, a radially outer surface 128, and a through hole 121. In some embodiments, the section 120B is hingedly or pivotally connected to the section 120A, for example via a hinge connection 126. The hinge connection 126 may be, for example, a hinge, a living hinge, or some other means for a pivotable connection. The radially outer surface 128 extends from the end 122 to the end 124. Due to the hinge connection between the sections 120A and 120B, the separation tool 120 can engage the tube 80 radially rather than slide axially over the tube 80 from the end 92. As shown in the drawing, the hinge connection 126 projects radially outward in the radial direction RD1 from the radially outer surface 128 or the sections 120A-B. In other words, the hinge connection 126 is offset from the sections 120A-B.

[0047] In some embodiments, as shown, the radially outer surface 128 is stepped (i.e., the diameter changes). In some embodiments, the radially outer surface 128 has a constant diameter. The radially outer surface 128 proximate the end 122 has a diameter smaller than the diameter of the radially inner surface 146. Further, the diameter of the through hole 121 is larger than the diameter of the radially outer surface 90. Thereby, the end 122 is slid radially between the connector body 40 and the tube 80, specifically, between the radially inner surface 146 and the radially outer surface 90, to engage with the protrusions 24A - D.

[0048] The separation tool 120 further includes one or more protrusions, such as the protrusion 130. The protrusion 130 extends axially AD1 from the end 122 and is configured to be engageable with the protrusions 24A - D. Each of the protrusions 130 includes a ramp or circumferential ramp surface 132 and a radially outer surface 134. In some embodiments, the radially outer surface 134 is radially aligned with the radially outer surface 128 (i.e., the diameter of the radially outer surface 134 is equal to the diameter of the radially outer surface 128). The ramp 132 extends from the radially outer surface 134 to the through hole 121. Specifically, the diameter of the ramp 132 decreases in the circumferential direction CD1 (see FIG. 12). The ramp 132 is configured to engage with the protrusions 124A - D to radially expand the engagement members 122A - D. In some embodiments, the radially outer surface 134 further includes a boss 136 protruding therefrom. The boss 136 is configured to engage with the protrusions 124A - D to further displace the engagement members 122A - D radially outward to pass through the shoulder 87 and / or the openings 55A - B. In some embodiments, the shape of the boss 136 is spherical.

[0049] To separate the tube 80 from the connector body 40 when the fluid connection assembly 10 is in the locked position, first engage the separation tool 120 concentrically with the tube 80, particularly with the radially outer surface 90, and direct the projection 130 axially AD1 towards the connector body 40. This can be done by sliding the separation tool 120 axially on the tube 80 from the end 92, or, as described above, by moving section 120B away from section 120A and then radially positioning the separation tool 120 around the tube 80 such that the through hole 121 engages the radially outer surface 90. Next, displace the separation tool 120 axially AD1 along the tube 80 until the projection 130 engages the projections 24A - D. "Engage" means that, as best shown in FIG. 12, the projection 130 should be circumferentially disposed between the projections 24A - D. Then, displace the separation tool 120 circumferentially CD1 such that the ramp 132 engages the projections 24A - D. The ramp 132 radially outwardly presses the radially inner surfaces 26A - D in the radial direction RD1. When the radially inner surfaces 26A - D are aligned with and disposed on the radially outer surface 134 and / or the boss 136, the projections 24A - D disengage from the shoulder 87, and both the tube 80 and the separation tool 120 can be removed axially AD2 from the connector body 40. That is, the outermost radius of the radially outer surface 134 and / or the boss 136 is greater than or equal to the outermost radius of the shoulder 87. In some embodiments, when the radially inner surfaces 26A - D are aligned with and disposed on the radially outer surface 134 and / or the boss 136, the retainer 20 can be removed from the groove 54 and thus from the connector body 40. Thus, in some embodiments, the separation tool 120 can be used not only to unlock the tube 80 from the connector body 40 but also to remove the retainer 20 from the connector body 40.

[0050] It will be recognized that the various aspects of the foregoing disclosure, as well as other features and functions, or alternatives thereof, can desirably be combined into many other different systems or applications. Various presently unforeseen or unanticipated alternatives, modifications, variations, or improvements thereof may be made by those skilled in the art in the future, and these are also intended to be encompassed by the following claims.

Description of the Reference Numerals

[0051] 10 Fluid connection assembly 20 Retainer 20A Section 20B Section 21 Hole 22A Engaging member 22B Engaging member 22C Engaging member 22D Engaging member 23A Radially inward face 23B Radially inward face 23C Radially inward face 23D Radially inward face 24A Protrusion 24B Protrusion 24C Protrusion 24D Protrusion 25A Face 25B Face 25C Face 25D Face 26A Face 26B Face 26C Face 26D Face 27A Face 27B Face 27C Face 27D Face 28A Hook 28B Hook 28C Hook 28D Hook 29A Arm 29B Arm 29C Arm 29D Arm 30A Arm 30B Arm 30C Arm 30D Arm 31A Arm 31B Arm 31C Arm 31D Arm 40 Connector Body 41 Through-Hole 42 End 44 End 46 Radially Inward Surface 48 Radially Inward Surface 50 Groove 52 Radially Outward Surface 53 Radially Outward Surface 54 Groove 55A Opening 55B Opening 55C Opening 55D Opening 56 Groove 58 Head 60 Radially Outward Surface 62 Seal 64 Seal 80 Tube 82 End 83 Section 84 Radially Outward Surface 86 Surface 87 Shoulder or Bead 88 Surface 89 Section 90 Radially Outward Surface 92 End 94 Through-Hole 100 Connecting Tool 101 Through-Hole 102 End 104 End 106 Radially Outward Surface 108 Protrusion 110 Radially Outward Surface 120 Separating Tool 120A Section 120B Section 121 Hole 122 End 124 End 126 Hinge or hinge connection part 128 Radially outward surface 130 Protrusion 132 Lamp or lamp surface 134 Radially outward surface 136 Boss AD1 Axial direction AD2 Axial direction CD1 Circumferential direction CD2 Circumferential direction RD1 Radial direction RD2 Radial direction

Claims

1. A connector body, a first end, a second end, a through hole, a groove, the groove including a first radially outer surface, a second radially outer surface and a first opening, a connector body including the above, a retainer configured to be removably connectable to the connector body, a first engaging member, a first radially inner surface, a first protrusion extending from the first radially inner surface and configured to extend through the first opening into the through hole, a first engaging member including the above, a second engaging member including a second radially inner surface, a plurality of arms pivotally connected to connect the first engaging member to the second engaging member and extending in a first circumferential direction from the first engaging member, a plurality of arms pivotally connected to connect the first engaging member to the second engaging member and extending in a second circumferential direction opposite to the first circumferential direction from the first engaging member, a retainer including the above, and a fluid connection assembly.

2. The retainer is configured to be engageable with the groove, The fluid connection assembly according to Claim 1.

3. The first radially inner surface and the second radially inner surface abut against the second radially outer surface, The fluid connection assembly according to Claim 1.

4. The groove further includes a second opening, The second engaging member further includes a second protrusion extending from the second radially inner surface and configured to extend through the second opening into the through hole, The fluid connection assembly according to Claim 3.

5. The first protrusion, a first surface facing in a first axial direction, a second surface facing in a second axial direction, a third surface connecting the first surface and the second surface and facing radially inward, and includes the above, The fluid connection assembly according to Claim 1.

6. The first surface is perpendicular to the first radially inner surface, The second surface is not perpendicular to the first radially inner surface, The fluid connection assembly according to Claim 5.

7. The plurality of pivotally connected arms, a first arm pivotally connected to the first engaging member, a second arm pivotally connected to the first arm, a third arm pivotally connected to the second arm and pivotally connected to the second engaging member, and includes the above, The fluid connection assembly according to Claim 1.

8. The first arm extends radially outward in the first circumferential direction from the first engaging member, The third arm extends radially inward in the first circumferential direction from the second arm, The fluid connection assembly according to claim 7.

9. The retainer further comprises at least one hook extending radially outward from at least one of the first engaging member and the second engaging member, The fluid connection assembly according to claim 1.

10. To remove the retainer from the connector body, the first engaging member and the second engaging member are displaced radially outward to remove the first protrusion from the first opening, The fluid connection assembly according to claim 1.

11. Further comprising a connection tool including a frustoconical radially outward surface and a protrusion configured to engage with the first end to connect the retainer to the connector body, The fluid connection assembly according to claim 1.

12. A connector body, A first end, A second end, A through hole, A groove, the groove including a second radially outward surface, a first opening and a second opening, a first radially outward surface, A connector body including, A retainer configured to be removably connected to the connector body and having a continuous ring shape, A first engaging member, A first radially inward surface, A first protrusion extending from the first radially inward surface and configured to extend through the first opening into the through hole, A first engaging member including, A second engaging member, A second radially inward surface, A second protrusion extending from the second radially inward surface and configured to extend through the second opening into the through hole, Including, a second engaging member connected to the first engaging member by a plurality of first pivotally connected arms, A retainer including, A tube including a shoulder, and in the locked state, the retainer fixes the tube to the connector body, a tube, Fluid connection assembly.

13. In the locked state, the retainer engages with the groove, The fluid connection assembly according to claim 12.

14. In the locked state, the first radially inward surface and the second radially inward surface abut against the second radially outward surface, The fluid connection assembly according to claim 12.

15. At least one of the first protrusion and the second protrusion has: a first surface facing in a first axial direction; a second surface facing in a second axial direction; and a third surface connecting the first surface and the second surface and facing radially inward. The fluid connection assembly according to claim 12.

16. The at least one protrusion is the first protrusion, the first surface is perpendicular to the first radially inward surface, and the second surface is not perpendicular to the first radially inward surface. The fluid connection assembly according to claim 15.

17. The plurality of arms pivotally connected to the first include: a first arm pivotally connected to the first engagement member; a second arm pivotally connected to the first arm; and a third arm pivotally connected to the second arm and pivotally connected to the second engagement member. The fluid connection assembly according to claim 12.

18. The first arm extends radially outward in a first circumferential direction from the first engagement member, and the third arm extends radially inward in the first circumferential direction from the second arm. The fluid connection assembly according to claim 17.

19. The retainer further includes a second plurality of arms pivotally connected to connect the first engagement member to the second engagement member, the first plurality of arms pivotally connected extend in a first circumferential direction from the first engagement member, and the second plurality of arms pivotally connected extend in a second circumferential direction opposite to the first circumferential direction from the first engagement member. The fluid connection assembly according to claim 17.

20. The retainer further includes at least one hook extending radially outward from at least one of the first engagement member and the second engagement member. The fluid connection assembly according to claim 12.

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