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 radially outward surface having a groove, the groove having a first width; and a retainer configured to be removably connectable to the connector body, the retainer including: a third end, a fourth end, a first section, a second section displaceable relative to the first section, a radially inward surface, a first flange extending radially inward from the radially inward surface and configured to be engageable with the groove, the first flange having a second width, the second width being smaller than the first width; and a second flange extending radially inward from the radially inward surface.

Description

[Technical field]

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS This application claims the benefit under Articles 4 and 8 of the Stockholm Act of the Paris Convention for the Protection of Industrial Property to International Patent Application PCT / US2020 / 057312, filed on October 26, 2020, which is incorporated herein by reference in its entirety.

[0002] 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 allows for rapid assembly without the need for tools. [Background technology]

[0003] Fluid connectors, fluid connections and fluid connection assemblies are essential components for many applications, especially automotive applications. Because automotive systems are made up of various components such as radiators, transmissions, engines, etc., fluids must be able to move within each component as well as between components. An example of a fluid moving between components is transmission fluid moving from the transmission to a transmission oil cooler to reduce the temperature of the transmission fluid. Fluids move primarily 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 to the connector body adapted to snap behind a raised shoulder on the tube when the tube is fully inserted into the connector body. However, for the fluid connector to function properly, a slot or opening must be machined into the connector body to allow the retaining clip to protrude therethrough and engage the tube, which requires additional post-processing manufacturing operations. During the assembly process, attachment of the retaining clip to the connector body is difficult to perform and improper attachment of the retaining clip may jeopardize the structural integrity of the retaining clip. In addition, the force required to engage the tube into the connector body and overcome the radial force of the retention clip is very high with current designs. Also, the retention clips are very thin and small, making them easy to lose if dropped or misplaced. Furthermore, some connection assembly solutions are time consuming to fasten and require tools for the assembly process.

[0004] Thus, there is a long felt need for a fluid connection assembly that includes a retainer that allows for disassembly, eliminates the need for post-processing machining, and reduces the insertion force required to assemble the fluid connector. Summary of the Invention

[0005] According to aspects presented herein, there is provided a fluid connection assembly including: a connector body including a first end, a second end, a through hole, and a radially outward surface having a groove, the groove including a first width; and a retainer configured to be removably connectable to the connector body, the retainer including a third end, a fourth end, a first section, a second section displaceable relative to the first section, a radially inward surface, a first flange extending radially inward from the radially inward surface and configured to be engageable with the groove, the first flange having a second width, the second width being smaller than the first width, and a second flange extending radially inward from the radially inward surface.

[0006] In some embodiments, in a fully assembled locked state, the radially inwardly facing surface is configured to be engageable with the radially outwardly facing surface. In some embodiments, when the first flange engages with the groove, the retainer is axially displaceable relative to the connector body. In some embodiments, the first flange is disposed immediately adjacent to the third end and the second flange is disposed immediately adjacent to the fourth end. In some embodiments, the fluid connection assembly further comprises a tube including a shoulder, the retainer configured to fasten the tube to the connector body. In some embodiments, the shoulder is configured to engage with the second end and the second flange maintains the shoulder engaged with the second end. In some embodiments, when the retainer is locked to the connector body and the tube is not connected to the connector body, the retainer is axially displaceable relative to the connector body. In some embodiments, when the tube is connected to the connector body and the retainer is locked to the connector body and the tube, the retainer is not axially displaceable relative to the connector body. In some embodiments, the second section is pivotally connected to the first section. In some embodiments, the first section comprises a male connector and the second section comprises a female connector, and in a fully assembled and locked state, the male connector engages with the female connector to fixedly fasten the first section to the second section. In some embodiments, the female connector comprises a recess extending radially outward from the radially inward facing surface and an opening extending through the recess, and the male connector comprises a radially outward extending protrusion configured to be engageable with the opening.

[0007] According to aspects presented herein, a fluid connection assembly is provided that includes a connector body including a first end, a second end, a through hole, and a radially outwardly facing surface having a groove, the groove including a first width; a retainer configured for removably connection to the connector body, the retainer including a third end, a fourth end, a first section, a second section, a radially inwardly facing surface, a first flange disposed immediately adjacent the third end and extending radially inwardly from the radially inwardly facing surface, configured for engagement with the groove, the first flange including a second width, and a second flange disposed immediately adjacent the fourth end and extending radially inwardly from the radially inwardly facing surface; and a tube including a shoulder, wherein in a fully assembled and locked state, the second flange fastens the shoulder to the connector body.

[0008] In some embodiments, the second width is smaller than the first width. In some embodiments, in a fully assembled and locked state, the first flange engages the first groove, the shoulder abuts the second end, and the second flange abuts the shoulder. In some embodiments, when the first flange engages the groove, the retainer is axially displaceable relative to the connector body. In some embodiments, the connector body further comprises a recess extending in the first axial direction from the second end, the recess comprising a first diameter. In some embodiments, the second flange has a second diameter, the second diameter being smaller than the first diameter. In some embodiments, the shoulder comprises a third diameter, and in a fully assembled and locked state, the shoulder is disposed within the recess, and the third diameter is greater than the second diameter and less than the first diameter. In some embodiments, the second section is pivotally connected to the first section, the first section comprising a male connector and the second section comprising a female connector, where in a fully assembled and locked state the male connector engages with the female connector to fixedly fasten the first section to the second section. In some embodiments, the female connector comprises a recess extending radially outward from the radially inward facing surface and an opening extending through the recess, and the male connector comprises a radially outward extending protrusion configured to be engageable with the opening.

[0009] According to aspects presented herein, there is provided a fluid connection assembly including: a connector body including a first end, a second end, a through hole, and a radially outward surface having a groove; and a retainer configured to be removably connectable to the connector body, the retainer including a third end, a fourth end, a first section, a second section, a radially inward surface, a first flange extending radially inward from the radially inward surface and configured to be engageable with the groove, and a second flange extending radially inward from the radially inward surface and configured to be engageable with the second end.

[0010] In some embodiments, in a fully assembled and locked state, the radially inwardly facing surface is configured to be able to abut against the radially outwardly facing surface. In some embodiments, in a fully assembled and locked state, the first flange engages the groove and the second flange abuts the second end. In some embodiments, the first flange is disposed immediately adjacent to the third end and the second flange is disposed immediately adjacent to the second end. In some embodiments, the connector body further comprises a recess extending in a first axial direction from the second end, the recess comprising a first diameter. In some embodiments, the second flange comprises a second diameter, the second diameter being smaller than the first diameter. In some embodiments, the fluid connection assembly further comprises a tube including a shoulder, and the retainer is configured to retain the tube to the connector body. In some embodiments, the shoulder is disposed within the recess, and the second flange holds the shoulder within the recess. In some embodiments, the second section is pivotally connected to the first section. In some embodiments, the first section comprises a male connector and the second section comprises a female connector, and in a fully assembled and locked state, the male connector engages with the female connector to fixedly fasten the first section to the second section. In some embodiments, the female connector comprises a recess extending radially outward from the radially inward facing surface and an opening extending through the recess, and the male connector comprises a radially outward extending protrusion configured to be engageable with the opening.

[0011] According to aspects presented herein, a fluid connection assembly is provided that includes a connector body including a first end, a second end, a through hole, and a radially outward surface having a groove; a retainer configured for removably connection to the connector body, the retainer including a third end, a fourth end, a first section, a second section, a radially inward surface, a first flange disposed immediately adjacent the third end and extending radially inward from the radially inward surface and configured for engagement with the groove, and a second flange disposed immediately adjacent the fourth end and extending radially inward from the radially inward surface and configured for engagement with the groove; and a tube including a shoulder, wherein in a fully assembled and locked state, the second flange fastens the shoulder to the connector body.

[0012] In some embodiments, in the fully assembled and locked state, the radially inwardly facing surface abuts the radially outwardly facing surface. In some embodiments, in the fully assembled and locked state, the first flange engages with the first groove and the second flange abuts the second end. In some embodiments, the connector body further comprises a recess extending in a first axial direction from the second end, the recess comprising a first diameter. In some embodiments, the second flange comprises a second diameter, the second diameter being smaller than the first diameter. In some embodiments, the shoulder comprises a third diameter, and in the fully assembled and locked state, the shoulder is disposed within the recess, the third diameter being larger than the second diameter and smaller than the first diameter. In some embodiments, the second section is pivotally connected to the first section. In some embodiments, the first section comprises a male connector and the second section comprises a female connector, and in the fully assembled and locked state, the male connector engages with the female connector to fixedly fasten the first section to the second section. In some embodiments, the female connector includes a recess extending radially outward from the radially inward facing surface and an opening extending through the recess, and the male connector includes a radially outward extending protrusion configured to be engageable with the opening.

[0013] These and other objects, features, and advantages of the present disclosure will become readily apparent from a consideration of the following detailed description of the disclosure, taken in light of the drawings and the appended claims. [Brief description of the drawings]

[0014] Various embodiments are disclosed by way of example only and with reference to the accompanying schematic drawings in which corresponding reference symbols indicate corresponding parts, and in which: [Figure 1] FIG. 2 is a perspective view of the fluid connection assembly in a fully assembled and locked state. [Diagram 2] FIG. 2 is an exploded perspective view of the fluid connection assembly shown in FIG. 1. [Diagram 3] FIG. 2 is a perspective view of the retainer shown in FIG. 1 in an unlocked state. [Figure 4] 4 is a cross-sectional view of the fluid connection assembly taken generally along line 4-4 of FIG. 1. [Diagram 5] 5 is a cross-sectional view of the fluid connection assembly taken generally along line 5-5 of FIG. 1. [Figure 6] FIG. 2 is a perspective view of the fluid connection assembly in a fully assembled and locked state. [Figure 7] FIG. 7 is an exploded perspective view of the fluid connection assembly shown in FIG. 6. [Figure 8] FIG. 7 is a perspective view of the retainer shown in FIG. 6 in an unlocked state. [Figure 9] 9 is a cross-sectional view of the fluid connection assembly taken generally along line 9-9 of FIG. 6. [Figure 10] 10 is a cross-sectional view of the fluid connection assembly taken generally along line 10-10 of FIG. 6. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] It should be recognized at the outset that like drawing numbers on different drawings may identify identical or functionally similar structural elements. It is to be understood that the claims are not limited to the disclosed aspects.

[0016] Further, it is to be understood that this disclosure is not limited to the particular methods, materials, and modifications described, as such can, of course, vary. It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments only, and is not intended to limit the scope of the claims.

[0017] 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 is understood that methods, devices, or materials similar or equivalent to those described herein may be used in the practice or testing of the example embodiments. The assemblies of the present disclosure may be actuated hydraulically, electronically, pneumatically, and / or spring-driven.

[0018] It is to be appreciated that the term "substantially" is synonymous with words such as "near," "very near," "about," "approximately," "approximately," "essentially," "neighborhood," "vicinity," and the like, and that such terms may be used interchangeably when they appear in the specification and claims. It is to be understood that the term "proximate" is synonymous with words such as "near," "close," "adjacent," "neighboring," "immediately," "next to," and the like, and that such terms may be used interchangeably when they appear in the specification and claims. The term "approximately" is intended to mean a value within 10 percent of the specified value.

[0019] The use of "or" in this application is understood to refer to a "non-exclusive" arrangement unless otherwise stated. For example, when it says "item x is A or B," this is understood to mean either (1) or (2) below: (1) item x is only one or the other 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" arrangement. For example, the "exclusive or" arrangement for the statement "item x is A or B" requires that x is only one of A and B. 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, 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 arrangements: That is, an apparatus comprising a first element, an apparatus comprising a second element, an apparatus comprising a third element, an apparatus comprising a first element and a second element, an apparatus comprising a first element and a third element, an apparatus comprising a first element, a second element, and a third element, or an apparatus comprising a second element and a third element.

[0020] Furthermore, as used herein, the phrases "comprising at least one of" and "comprising at least one of" in conjunction with a system or element are intended to mean that the system or element includes one or more of the elements listed after the phrase. For example, an apparatus comprising at least one of a first element, a second element, and a third element is intended to be interpreted as any one of the following structural arrangements: an apparatus comprising a first element, an apparatus comprising a second element, an apparatus comprising a third element, an apparatus comprising a first element and a second element, an apparatus comprising a first element and a third element, an apparatus comprising a first element, a second element, and a third element, or an apparatus comprising a second element and a third element. A similar interpretation is also intended when the phrase "used in 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, a device comprising a first element, a second element, and / or a third element is intended to be construed as any one of the following structural arrangements: a device comprising a first element, a device comprising a second element, a device comprising a third element, a device comprising a first element and a second element, a device comprising a first element and a third element, a device comprising a first element, a second element, and a third element, or a device comprising a second element and a third element.

[0021] It should be appreciated 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. It should be further appreciated that the term "tube" may refer to a rigid or flexible conduit of any material suitable for containing and allowing the flow of gases or liquids.

[0022] As used herein, a "fully assembled and locked state" refers to a fluid connection assembly where the tubing is fully connected to the connector body and the retainer is fully connected to the connector body to hold the tubing therein. As used herein, a "semi-assembled and locked state" refers to a fluid connection assembly where the retainer is fully connected to the connector body but no tubing is disposed within the connector body or retainer. The retainer may be described as having a "locked state" or an "unlocked state" that refers to the state of the retainer independent of the connector body and the tubing.

[0023] Referring now to the drawings, Fig. 1 is a perspective view of a fluid connection assembly 10 in a fully assembled and locked state. Fig. 2 is an exploded 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 should be read in conjunction with Figs. 1-2.

[0024] Tube 80 comprises end 82, section 83, bead or shoulder 87, section 89, end 92, and through hole 94. Through hole 94 extends through tube 80 from end 82 to end 92. Section 83 is disposed between end 82 and shoulder 87 and comprises radially outwardly facing surface 84. Radially outwardly facing surface 84 comprises a substantially constant diameter. In some embodiments, radially outwardly facing surface 84 comprises a frustoconical tapered or curved surface proximate end 82 (see FIG. 4). Shoulder 87 is disposed between section 83 and section 89 and comprises face 86 and face 88. In some embodiments, face 86 is an axial surface that faces at least partially in axial direction AD1, and face 88 is an axial surface that faces at least partially in axial direction AD2. In some embodiments, face 86 is a frustoconical surface that extends radially inwardly in axial direction AD1 from the radially outwardly facing surface of shoulder 87. For example, the surface 86 may be a straight cone shape, increasing in diameter 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 outwardly facing surface 90. The radially outwardly facing surface 90 includes a substantially constant diameter. The tube 80 is specifically configured to be inserted into the connector body 40 end 82 first. The tube 80 is inserted into the connector body 40 until the section 83, or the radially outwardly facing surface 84, engages the seal 62 (see FIG. 4). The shoulder 87 is disposed in the recess 45, and thus inside the connector body 40, when the retainer 20 is assembled to retain the tube 80 in the connector body 40, as described in more detail below. It should be appreciated that the tube 80 may be any conventional tube or tube end formation comprising a radially outward and axially extending bead, a radially outward extending protrusion or flange, or a tapered profile on the outer surface of the tube to secure the tube within the connector body. In some embodiments, the tube 80 comprises a metal. In some embodiments, the tube 80 comprises a polymer. In some embodiments, the tube 80 comprises a ceramic.

[0025] Figure 3 is a perspective view of the retainer 20 in an unlocked state. Figure 4 is a cross-sectional view of the fluid connection assembly 10 taken generally along line 4-4 in Figure 1. Figure 5 is a cross-sectional view of the fluid connection assembly 10 taken generally along line 5-5 in Figure 1. The following description should be read in light of Figures 1-5.

[0026] Retainer 20 generally comprises section 20A, section 20B, end 22, end 24, hole 21 extending from end 22 to end 24, radially outward facing surface 26, and radially inward facing surface 28. In some embodiments, section 20A is hingedly connected to section 20B, for example, via hinge 34. In some embodiments, hinge 34 is a living hinge. In some embodiments, section 20A is removably connected to section 20B. When sections 20A and 20B are connected or retainer 20 is in a locked state (FIGS. 1 and 2), hole 21 is formed therebetween. However, it should be appreciated that even in an unlocked state, each of sections 20A and 20B may be said to include a respective hole 21.

[0027] Radially inward surface 28 extends from end 22 and is configured to engage radially outward surface 52. Radially inward surface 28 includes a flange 30 extending radially inward therefrom. Flange 30 is disposed adjacent end 22. Flange 30 is configured to engage groove 54, and radially inward surface 28 is configured to engage radially outward surface 52 to connect retainer 20 to connector body 40. Radially inward surface 28 further includes a flange 32 extending radially inward therefrom. Flange 32 is disposed adjacent end 24. Flange 32 is configured to engage shoulder 87 to connect tube 80 to connector body 40.

[0028] As best seen in FIG. 4, the flange 32 is spaced a first distance from the flange 30. The groove 54 is spaced a second distance from the end 44. The second distance is equal to the first distance. With this design, when the retainer 20 is connected to the connector body 40, the flange 32 abuts the end 44. Further, the flange 32 has a diameter D1, the radially inwardly facing surface 46 has a diameter D2, and the shoulder 87 has a diameter D3. The diameter D3 is smaller than the diameter D2, which allows the shoulder 87 to fit within the axial recess 45 of the connector body 40 formed by the radially inwardly facing surface 46 and the axial surface 47. The diameter D1 is smaller than the diameter D3, thus preventing the shoulder 87 from being removed from the connector body 40 or preventing the tube 80 from being displaced axially in the AD2 direction relative to the connector body 40.

[0029] Section 20A includes a male connector 36 and section 20B includes a female connector 38. As shown, male connector 36 of section 20A is configured to engage with female connector 38 of section 20B such that sections 20A and 20B are fixedly fastened together. In some embodiments, male connector 36 is hook-shaped (in the radially outward direction) and includes groove 36A and protrusion 36B. Groove 36A is disposed on radially outward surface 26. Protrusion 36B extends generally radially outward from groove 36A in radial direction RD1. In some embodiments, protrusion 36B includes a tapered portion near its radially outermost end configured to permit easier engagement of protrusion 36B with female connector 38, specifically opening 38A.

[0030] The female connector 38 includes an opening 38A extending radially inward from the radially outward surface 26. The opening 38A is configured to engage with the protrusion 36B to lock the section 20B to the section 20A. The female connector 38 further includes a recess 38B. In some embodiments, the recess 38B is disposed on the radially inward surface 26 (i.e., extends radially outward from the radially inward surface 26). When the section 20B is displaced toward the section 20A, the female connector 38 engages with the protrusion 36B and displaces radially outward in the radial direction RD1. When the opening 38A is aligned with the protrusion 36B, the female connector 38 snaps back radially inward in the radial direction RD2, thereby locking the section 20B to the section 20A.

[0031] In some embodiments, the retainer 20 comprises a metal. In some embodiments, the retainer 20 comprises a polymer. In some embodiments, the retainer 20 comprises a ceramic.

[0032] The connector body 40 comprises a through bore 41 extending from end 42 to end 44, a radially inwardly facing surface 46, a radially inwardly facing surface 48, a groove 50, a radially outwardly facing surface 52, a groove 54, a head 58, and a radially outwardly facing surface 60. The connector body 40 is configured to be connected to a component that is filled with or through which a fluid flows. For example, the connector body 40 may be connected to a refrigeration compressor or transmission via the radially outwardly facing surface 60, which may comprise male threads. The connector body 40 may be threaded into a threaded hole in 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 appreciated that the head 58 may comprise any suitable geometric shape for applying a torque to the connector body 40. Another component to which the fluid connector 10, and specifically the connector body 40, may be attached is a condenser, evaporator, or pump. It should be appreciated that the fluid connector 10 may be used in a variety of other components, assemblies, and subassemblies where a fluid connection is desired. The radially outwardly facing surface 60 may further comprise a groove 56. A seal or O-ring is disposed within the groove 56 to form a fluid-tight seal between the connector body 40 and the component to which it is connected. The seal 62 is disposed within the connector body 40. Specifically, the seal 62 is disposed within the groove 50 and engages the tube 80 (i.e., the radially outwardly facing surface 84). The groove 50 is disposed on the radially inwardly facing surface 48. In some embodiments, the seal 62 is an O-ring. In some embodiments, as shown, the radially inwardly facing surface 46 is a substantially cylindrical surface. In some embodiments, the radially inwardly facing surface 46 comprises a frustoconical surface or a tapered proximal end 44 extending radially outward. In some embodiments, the radially inwardly facing surface 48 is a substantially cylindrical surface. Surface 47 connects surface 46 and surface 48. In some embodiments, surface 47 is an axially facing surface. In some embodiments, surface 47 is a frustoconical surface. Surface 47 is configured to be engageable with shoulder 87, specifically to prevent axial displacement of tube 80 in axial direction AD1.The radially inwardly facing surface 46 and the surface 47 are said to form a recess 45 in the connector body 40 where the shoulder 87 resides, as described in more detail below. The groove 54 is disposed in the radially outwardly facing surface 52. The groove 54 is disposed axially between the end 44 and the head 58. In some embodiments, the groove 54 is disposed axially between the end 44 and the head 58 and is spaced apart from the end 44 and the head 58. In some embodiments, the groove 54 is disposed immediately adjacent the head 58. The groove 54 is configured to engage the flange 30 to connect the retainer 20 to the connector body 40. In some embodiments, the connector body 40 comprises a metal. In some embodiments, the connector body 40 comprises a polymer. In some embodiments, the connector body 40 comprises a ceramic.

[0033] To assemble the fluid connection assembly 10, the tube 80 is inserted axially into the connector body 40, end 82 first, in an axial direction AD1. The radially outwardly facing surface 84 engages the seal 62, and the section 83 is disposed inwardly adjacent the radially inwardly facing surface 48 of the connector body 40. The shoulder 87 engages the axial recess 45 of the connector body 40, specifically, the shoulder 87 engages the radially inwardly facing surface 46 and the surface 47. In some embodiments, the shoulder 87 resides completely within the radially inwardly facing surface 46 (i.e., the shoulder 87 is located completely between the end 44 and the surface 47). In some embodiments, the shoulder 87 resides only partially within the radially inwardly facing surface 46 (i.e., the shoulder 87 extends axially beyond the end 44 in an axial direction AD2). The retainer 20 is then clipped over both the connector body 40 and the tube 80. Specifically, sections 20A and 20B are positioned over connector body 40 such that flange 30 is aligned with groove 54. Sections 20A and 20B are displaced radially inward toward one another (i.e., in radial direction RD2) until female connector 38 fully engages male connector 36 and retainer 20 is in a locked state. In a fully assembled, locked state, flange 30 engages groove 54, radially inward surface 28 engages radially outward surface 52, and flange 32 engages shoulder 87 of tube 80. In some embodiments, flange 32 also engages end 44 of connector body 40. In some embodiments, flange 32 engages radially outward surface 90. In some embodiments, end 22 engages head 58. The engagement of tube 80 with connector body 40 prevents axial displacement of tube 80 in axial direction AD1, and the engagement of retainer 20 with connector body 40 and tube 80 prevents axial displacement of tube 80 in axial direction AD2 and radial directions RD1 and RD2 relative to connector body 40. To disassemble, female connector 38 is displaced radially outward in radial direction RD1 relative to male connector 36 until opening 38A disengages from projection 36B. Sections 20A and 20B are then separated to disengage flange 32 from shoulder 87, at which point tube 80 can be removed from connector body 40.

[0034] Fig. 6 is a perspective view of the fluid connection assembly 110 in a fully assembled and locked state. Fig. 7 is an exploded perspective view of the fluid connection assembly 110. The fluid connection assembly 110 generally includes a retainer 120, a tube 180, and a connector body 140. The following description should be read in conjunction with Figs. 6-7.

[0035] Tube 180 comprises end 182, section 183, bead or shoulder 187, section 189, end 182, and through hole 194. Through hole 194 extends through tube 180 from end 182 to end 192. Section 183 is disposed between end 182 and shoulder 187 and comprises radially outwardly facing surface 184. Radially outwardly facing surface 184 comprises a substantially constant diameter. In some embodiments, radially outwardly facing surface 184 comprises a frustoconically tapered or curved surface proximate end 182 (see FIG. 9 ). Shoulder 187 is disposed between section 183 and section 189 and comprises face 186 and face 188. In some embodiments, face 186 is an axial surface that faces at least partially in axial direction AD1, and face 188 is an axial surface that faces at least partially in axial direction AD2. In some embodiments, the surface 186 is a frustoconical surface extending radially inward in the axial direction AD1 from the radially outward surface of the shoulder 187. For example, the surface 186 may be a straight cone shape and may increase in diameter in the axial direction AD2. In some embodiments, the surface 186 may comprise a straight portion and a conical or frustoconical portion. The section 189 is disposed between the shoulder 187 and the end 192 and comprises a radially outward surface 190. The radially outward surface 190 comprises a substantially constant diameter. The tube 180 is configured to be inserted into the connector body 140, specifically end 182 first. The tube 180 is inserted into the connector body 140 until the section 183, or radially outward surface 184, engages the seal 162 (see FIG. 9 ). Shoulder 187 engages end 144, more specifically, face 186 abuts and / or engages end 144, as described in more detail below, at which point retainer 120 is assembled to secure tube 180 to connector body 140. It should be appreciated that tube 180 may be any conventional tube or tube end formation comprising radially outward and axially extending beads, radially outward extending protrusions or flanges, or beveled profiles on an outer surface of the tube to secure the tube within the connector body. In some embodiments, tube 180 comprises metal.In some embodiments, the tube 180 comprises a polymer. In some embodiments, the tube 180 comprises a ceramic.

[0036] Figure 8 is a perspective view of the retainer 120 in an unlocked state. Figure 9 is a cross-sectional view of the fluid connection assembly 110 taken generally along line 9-9 in Figure 6. Figure 10 is a cross-sectional view of the fluid connection assembly 110 taken generally along line 10-10 in Figure 6. The following description should be read in light of Figures 6-10.

[0037] Retainer 120 generally comprises section 120A, section 120B, end 122, end 124, hole 121 extending from end 122 to end 124, radially outward facing surface 126, and radially inward facing surface 128. In some embodiments, section 120A is hingedly connected to section 120B, for example, via hinge 134. In some embodiments, hinge 134 is a living hinge. In some embodiments, section 120A is removably connected to section 120B. When sections 120A and 120B are connected or retainer 120 is in a locked state (FIGS. 6-7), hole 121 is formed therebetween. However, it should be appreciated that even in an unlocked state, each of sections 120A and 120B may be said to include a respective hole 121.

[0038] The radially inward surface 128 extends from the end 122 and is configured to be engageable with the radially outward surface 152. The radially inward surface 128 includes a flange 130 extending radially inward therefrom. The flange 130 is disposed adjacent the end 122. The flange 130 is configured to be engageable with the groove 154, and the radially inward surface 128 is configured to engage with the radially outward surface 152 to connect the retainer 120 to the connector body 140. The radially inward surface 128 further includes a flange 132 extending radially inward therefrom. The flange 132 is disposed adjacent the end 124. The flange 132 is configured to engage with the shoulder 187 to connect the tube 180 to the connector body 140.

[0039] As best seen in FIG. 9, the flange 132 is spaced a first distance from the flange 130. The groove 154 is spaced a second distance from the end 44. The shoulder 187 has a width equal to the third distance. The first distance is substantially equal to the sum of the second and third distances. With this design, when the retainer 120 is connected to the connector body 140 and the tube 180, the flange 132 abuts the surface 188 and the surface 186 abuts the surface 186 (i.e., the retainer 120 clamps the shoulder 187 to the end 144). In some embodiments, the first distance is less than the sum of the second and third distances. This causes the shoulder 187 and the connector body 140 to be pinched or clamped together. In some embodiments, the first distance is greater than the sum of the second and third distances such that the shoulder 187 engages or is in close proximity to the connector body 140. Additionally, flange 130 has a width W2 and groove 154 has a width W, W2 being less than width W1. Thus, when retainer 120 is connected to connector body 140 without tube 180, retainer 120 can slide or displace in axial directions AD1 and AD2 relative to connector body 140. When tube 180 is properly fastened to connector body 140 by retainer 120, retainer cannot displace in axial directions AD1 and AD2 relative to connector body 140. This feature provides an indicator as to the connection status of fluid connection assembly 110 and will be described in more detail below.

[0040] Flange 132 has a first diameter and shoulder 187 has a second diameter. The first diameter is smaller than the second diameter, thus preventing shoulder 187 from being removed from connector body 140 or preventing tube 180 from being displaced axially in a direction AD2 or from rotating relative to connector body 140. In some embodiments, radially inward surface 182 includes a third diameter equal to the second diameter, which prevents shoulder 187 from being displaced radially in a direction RD1 or radially in a direction RD2 relative to connector body 140.

[0041] Section 120A includes a male connector 136 and section 120B includes a female connector 138. As shown, male connector 136 of section 120A is configured to engage with female connector 138 of section 120B such that sections 120A and 120B are fixedly fastened together. In some embodiments, male connector 136 is hook-shaped (in the radially outward direction) and includes groove 136A and protrusion 136B. Groove 136A is disposed on radially outward surface 126. Protrusion 136B extends generally radially outward from groove 136A in radial direction RD1. In some embodiments, protrusion 136B includes a tapered portion near its radially outermost end configured to permit easier engagement of protrusion 136B with female connector 138, specifically opening 138A. In some embodiments, male connector 136 further includes at least one guide wall, such as guide walls 137A-B. Guide wall 137A is aligned with end 122 and extends radially outward from groove 136A. Guide wall 137B is aligned with end 124 and extends radially outward from groove 136A. Guide walls 137A-B are configured to engage end 122 and end 124, respectively, of female connector 138 to assist in aligning female connector 138 with male connector 136 during assembly.

[0042] The female connector 138 includes an opening 138A extending radially inward from the radially outward surface 126. The opening 138A is configured to engage with the protrusion 136B to lock the section 120B to the section 120A. The female connector 138 further includes a recess 138B. In some embodiments, the recess 138B is disposed on the radially inward surface 128 (i.e., extends radially outward from the radially inward surface 128). When the section 120B is displaced toward the section 120A, the female connector 138 engages with the protrusion 136B and displaces radially outward in the radial direction RD1. When the opening 138A is aligned with the protrusion 136B, the female connector 138 snaps back radially inward in the radial direction RD2, thereby locking the section 120B to the section 120A.

[0043] In some embodiments, the retainer 120 comprises a metal. In some embodiments, the retainer 120 comprises a polymer. In some embodiments, the retainer 120 comprises a ceramic.

[0044] The connector body 140 comprises a through hole 141 extending from end 142 to end 144, a radially inwardly facing surface 148, a groove 150, a radially outwardly facing surface 152, a groove 154, a head 158, and a radially outwardly facing surface 160. The connector body 140 is configured to be connected to a component that is filled with or through which a fluid flows. For example, the connector body 140 may be connected to a refrigeration compressor or transmission via the radially outwardly facing surface 160, which may comprise male threads. The connector body 140 may be threaded into a threaded hole in the compressor via the head 158 (e.g., using a wrench) and then filled with refrigerant fluid. In some embodiments, the head 158 is hexagonal. However, it should be appreciated that the head 158 may comprise any suitable geometric shape for applying a torque to the connector body 140. Another component to which the fluid connector 110, and specifically the connector body 140, may be attached is a condenser, evaporator, or pump. It should be appreciated that the fluid connector 110 may be used in a variety of other components, assemblies, and subassemblies where a fluid connection is desired. The radially outwardly facing surface 160 may further include a groove 156. A seal or O-ring 164 is disposed within the groove 156 to form a fluid-tight seal between the connector body 140 and the component to which it is connected. The seal 162 is disposed within the connector body 140. Specifically, the seal 162 is disposed within the groove 150 and engages the tube 180 (i.e., the radially outwardly facing surface 184). The groove 150 is disposed on the radially inwardly facing surface 148. In some embodiments, the seal 162 is an O-ring. In some embodiments, the radially inwardly facing surface 148 is a substantially cylindrical surface. The end 144 is configured to engage the shoulder 187 and specifically prevent axial displacement of the tube 180 in the axial direction AD1.

[0045] The groove 154 is disposed on the radially outwardly facing surface 152. The groove 154 is axially disposed between the end 144 and the head 158. The groove 154 comprises a radially outwardly facing surface 145, a surface 146, and a surface 147. The radially outwardly facing surface 145 comprises a diameter that is smaller than the diameter of the radially outwardly facing surface 152. The surface 146 extends radially outwardly from the radially outwardly facing surface 145 and faces in an axial direction AD1. The surface 147 extends radially outwardly from the radially outwardly facing surface 145 and faces in an axial direction AD2. In some embodiments, the surface 146 and / or the surface 147 are disposed perpendicular to the radially outwardly facing surface 145. In some embodiments, the groove 154 is axially disposed between the end 144 and the head 158 and is spaced apart from the end 144 and the head 158. In some embodiments, the groove 154 is disposed immediately adjacent to the head 158, as shown. The groove 154 is configured to engage the flange 130 to connect the retainer 120 to the connector body 140 .

[0046] The groove 154 has a width W1 that is greater than the width W2 of the flange 130. In a partially assembled locked state, when the tube 180 is not properly connected or is not present at all and the retainer 120 is connected to the connector body 140, the flange 130, and therefore the retainer 120, is displaceable in the axial directions AD1 and AD2 relative to the groove 154 and therefore the connector body 140 (i.e., the flange 130 can slide back and forth between the surface 146 and the surface 147). This indicates that the fluid connection assembly 110 is not properly assembled. When the retainer 120 is connected to the connector body 140 with the tube 180 properly connected, the flange 130, and therefore the retainer 120, is not displaceable in the axial directions AD1 and AD2 relative to the groove 154 and therefore the connector body 140 (i.e., the flange 130 abuts the surface 146, as shown in FIG. 9).

[0047] In some embodiments, the connector body 140 comprises a metal. In some embodiments, the connector body 140 comprises a polymer. In some embodiments, the connector body 140 comprises a ceramic.

[0048] To assemble the fluid connection assembly 110, the tube 180 is inserted axially AD1 into the connector body 140, end 182 first. The radially outward facing surface 184 engages the seal 162, and the section 83 is disposed inwardly adjacent the radially inward facing surface 148 of the connector body 140. The shoulder 187 engages the end 144 of the connector body 140, specifically, the surface 186 abuts the end 144. In some embodiments, as shown, the shoulder 187 is completely outside the connector body 140. The retainer 120 is then clipped over both the connector body 140 and the tube 180. Specifically, the sections 120A and 120B are disposed over the connector body 140 such that the flange 130 is at least partially aligned with the groove 154 and the flange 132 is at least partially aligned with the surface 188. Sections 120A and 120B are displaced radially inward toward one another (i.e., in radial direction RD2) until female connector 138 fully engages male connector 136 and retainer 120 is in a locked state. In a fully assembled and locked state, flange 130 engages groove 154, radially inward surface 128 engages radially outward surface 152, and flange 132 engages shoulder 187 of tube 180. In some embodiments, in a fully assembled and locked state, flange 130 abuts surface 146, flange 132 abuts surface 188, and surface 186 engages end 144. In some embodiments, in a fully assembled and locked state, flange 130 abuts radially outward surface 145, thus preventing radial or circumferential displacement of retainer 120 relative to connector body 140. In some embodiments, flange 132 engages radially outward surface 190. Engagement of tube 180 with connector body 140 prevents axial displacement of tube 180 in axial direction AD1, and engagement of retainer 120 with connector body 140 and tube 180 prevents axial displacement of tube 180 in axial direction AD2 and radial directions RD1 and RD2 relative to connector body 140. To disassemble, female connector 138 is displaced radially outward in radial direction RD1 relative to male connector 136 until opening 138A disengages from protrusion 136B.Sections 120A and 120B are then separated to disengage flange 132 from shoulder 187 , at which point tube 180 can be removed from connector body 140 .

[0049] It will be recognized that various aspects of the above-disclosed and other features and functions, or alternatives thereof, may be desirably combined into many other different systems or applications, and various presently unforeseen or unanticipated substitutions, modifications, variations, or improvements therein may be subsequently made by those skilled in the art, which are also intended to be within the scope of the following claims. [Explanation of symbols]

[0050] 10 Fluid Connection Assembly 20 Retainer 20A Section Section 20B 21 holes 22 End 24 End 26 Radial outward facing surface 28 Radial inward facing surface 30 Flange 32 Flange 34 Hinge 36 Male Connector 36A Groove 36B protrusion 38 female connector 38A aperture 38B Recess 40 Connector body 41 Through hole 42 End 44 End 45 Recess 46 Radial inward facing surface 47 sides 48 Radial inward facing surface 50 grooves 52 Radial outward facing surface 54 Groove 56 Groove 58 Head 60 Radial outward facing surface 62 Seal 64 Seal 80 Tubes 82 End Section 83 84 Radial outward facing surface 86 sides 87 Shoulder or bead 88 sides Section 89 90 Radial outward facing surface 92 End 94 Through hole 110 Fluid Connection Assembly 120 Retainer 120A Section 120B Section 121 holes 122 End 124 End 126 Radial outward facing surface 128 Radial inward facing surface 130 Flange 132 Flange 134 Hinge 136 Male Connector 136A Groove 136B Protrusion 137A Guide wall 137B Guide wall 138 Female Connector 138A aperture 138B Recess 140 Connector body 141 Through hole 142 End 144 End 145 Radial outward facing surface 146 Axial Surface 147 Axial Surface 148 Radial inward facing surface 150 groove 152 Radial outward facing surface 154 Groove 156 Groove 158 Head 160 Radial outward facing surface 162 Seal 164 Seal 180 tubes 182 End Section 183 184 Radial outward facing surface 186 sides 187 Shoulder or Bead 188 sides Section 189 190 Radial outward facing surface 192 End 194 Through hole AD1 Axial direction AD2 axial direction D1 diameter D2 diameter D3 diameter RD1 Radial direction RD2 Radial direction W1 width W2 Width

Claims

1. A connector body, A first end; A second end. A through hole; a radially outwardly facing surface including a groove, said groove including a first width; A connector body including: A retainer configured to connect a tube to the connector body, A third end. A fourth end. A first section; a second section displaceable relative to the first section; and A radially inward surface; a first flange extending radially inward from the radially inward surface and configured to be engageable with the groove, the first flange having a second width, the second width being less than the first width; a second flange extending radially inward from the radially inward surface; and and a retainer including: In the semi-assembled locked state, the radially inward surface is configured to be engageable with the radially outward surface; the first flange is axially displaceable within the groove; Fluid connection assembly.

2. When the first flange engages with the groove, the retainer is axially displaceable relative to the connector body. The fluid connection assembly of claim 1 .

3. the first flange is disposed immediately adjacent the third end and the second flange is disposed immediately adjacent the fourth end. The fluid connection assembly of claim 1 .

4. The tube has a shoulder portion. The fluid connection assembly of claim 1 .

5. the shoulder is configured to engage the second end; the second flange maintains the shoulder in engagement with the second end. The fluid connection assembly of claim 4.

6. When the retainer is locked to the connector body and the tube is not connected to the connector body, the retainer is axially displaceable relative to the connector body. The fluid connection assembly of claim 5 .

7. When the tube is connected to the connector body and the retainer is locked to the connector body and the tube, the retainer is not axially displaceable relative to the connector body. The fluid connection assembly of claim 6.

8. the second section is pivotally connected to the first section; The fluid connection assembly of claim 1 .

9. the first section includes a male connector; the second section includes a female connector; In a fully assembled and locked state, the male connector engages the female connector to fixedly fasten the first section to the second section. The fluid connection assembly of claim 8.

10. the female connector includes a recess extending radially outward from the radially inward surface and an opening extending through the recess; the male connector includes a radially outwardly extending protrusion configured to be engageable with the opening; The fluid connection assembly of claim 9.

11. A connector body, A first end; A second end. A through hole; a radially outwardly facing surface including a groove, said groove including a first width; A connector body including: A retainer configured to be removably connectable to the connector body, A third end. A fourth end. A first section; A second section; A radially inward surface; a first flange disposed immediately adjacent the third end and extending radially inward from the radially inward surface, the first flange configured to be engageable with the groove, the first flange including a second width; a second flange disposed immediately adjacent the fourth end and extending radially inward from the radially inward surface; and a retainer including: a tube including a shoulder; In a fully assembled and locked state, the second flange fastens the shoulder portion to the connector body so that the shoulder portion abuts against an axial surface of the connector body; When the retainer is locked to the connector body and the tube is not connected to the connector body, the retainer is axially displaceable relative to the connector body; When the tube is connected to the connector body and the retainer is locked to the connector body and the tube, the retainer is not axially displaceable relative to the connector body. Fluid connection assembly.

12. The second width is smaller than the first width. The fluid connection assembly of claim 11.

13. In the fully assembled and locked state, the first flange engages with the groove, the shoulder abuts the second end, and the second flange abuts the shoulder. The fluid connection assembly of claim 11.

14. When the first flange engages with the groove, the retainer is axially displaceable relative to the connector body. The fluid connection assembly of claim 11.

15. The connector body further comprises a recess extending in a first axial direction from the second end, the recess comprising a first diameter. The fluid connection assembly of claim 11.

16. the second flange has a second diameter, the second diameter being smaller than the first diameter; 16. The fluid connection assembly of claim 15.

17. the shoulder comprises a third diameter; In the fully assembled and locked state, the shoulder is disposed within the recess; the third diameter is greater than the second diameter and less than the first diameter; 17. The fluid connection assembly of claim 16.

18. the second section is pivotally connected to the first section; the first section includes a male connector; the second section includes a female connector; In the fully assembled and locked state, the male connector engages the female connector to fixedly fasten the first section to the second section. The fluid connection assembly of claim 11.

19. the female connector includes a recess extending radially outward from the radially inward surface and an opening extending through the recess; the male connector includes a radially outwardly extending protrusion configured to be engageable with the opening; 20. The fluid connection assembly of claim 18.

Images