Fluid connection assembly

Abstract

A fluid connection assembly including a connector body including a first end, a second end including a radially inwardly extending protrusion, the connector body including a first through hole, a seal sleeve, and at least one seal disposed in the seal sleeve, and a retainer operably disposed to be removably connected to the connector body, the retainer including an annular portion forming a third end, the third end operatively disposed to seal the at least one seal in the seal sleeve, at least one short finger extending from the annular portion, at least one long finger extending from the annular portion and terminating at a fourth end, wherein the at least one long finger extends out of the connector body from the second end when the retainer is connected to the connector body.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to fluid connectors, and more particularly to fluid connection assemblies including a polymer retainer that reduces the insertion force required for assembly while also allowing for disassembly. BACKGROUND

[0002] Fluid connectors, fluid connections, and fluid connection assemblies are integral components of many applications, particularly automotive applications. As automotive systems are comprised of various components such as radiators, transmissions, and engines, fluids must be able to flow not only within each component but also between components. An example of fluid flow between components is the flow of transmission fluid from a transmission to a transmission oil cooler to reduce the temperature of the transmission fluid. Fluids are moved between components primarily through flexible or rigid tubing, which is connected to each component by a fluid connector. Such fluid connectors typically include a retaining clip carried on the connector body, a retaining snap ring or circlip, which is adapted to snap behind a protruding shoulder formed on the tubing end when the tubing end is formed to fully insert into the connector body. However, in order for the fluid connector to function properly, a slot or hole must be machined on the connector body so that the retaining clip can extend therefrom and engage the tubing end, which requires additional post-processing manufacturing. Furthermore, it is difficult to install the retaining clip onto the connector body during the assembly process, which can compromise the structural integrity of the retaining clip if improperly installed. Additionally, the retaining clip is very thin and small and is easily lost if dropped or misplaced.

[0003] Accordingly, there is a long felt need for a fluid connection assembly that includes a retaining clip that allows for disassembly, reduces the need for post-processing machining, and reduces the insertion force required to assemble the fluid connector. SUMMARY

[0004] According to aspects shown herein, a fluid connection assembly is provided that includes a connector body including a first end, a second end, the second end including a protrusion extending radially inward, the connector body including a first through hole, a seal sleeve, and at least one seal disposed in the seal sleeve, and a retainer operably disposed to be detachably connected to the connector body, the retainer including an annular portion forming a third end, the third end operably disposed to enclose the at least one seal in the seal sleeve, at least one short finger extending from the annular portion, at least one long finger extending from the annular portion and terminating at a fourth end, wherein the at least one long finger extends out of the connector body from the second end when the retainer is connected to the connector body.

[0005] In some embodiments, at least one short finger includes a radially outwardly extending protrusion operatively arranged to engage a radially inwardly extending protrusion. In some embodiments, the radially outwardly extending protrusion includes a truncated conical surface. In some embodiments, the connector body further includes a truncated conical radially inwardly extending surface adjacent to the protrusion, with the radially outwardly extending protrusion operatively arranged to engage the truncated conical radially inwardly extending surface. In some embodiments, the connector body further includes at least one aperture aligned with the truncated conical radially inwardly extending surface. In some embodiments, when the retainer is attached to the connector body, at least one aperture is aligned with at least one short finger. In some embodiments, at least one long finger includes a radially inwardly extending protrusion. In some embodiments, the fluid connection assembly further includes a tube having a shoulder, wherein the radially inwardly extending protrusion is operatively arranged to engage the shoulder to lock the tube in the retainer. In some embodiments, at least one short finger and at least one long finger are spaced apart by at least one slot. In some embodiments, the connector body further includes a pouch, with the radially outwardly extending protrusion operatively arranged to engage the pouch. In some embodiments, the connector body further includes at least one hole aligned with the pouch-like portion, wherein the at least one hole provides an entrance to a radially outwardly extending protrusion. In some embodiments, the retainer comprises a polymer.

[0006] According to the aspects shown herein, a fluid connection assembly including a connector body is provided, the connector body including a first end, a second end, a first through-hole, a sealing sleeve, and at least one seal disposed in the sealing sleeve, and a retainer detachably connected to the connector body, the retainer including an annular portion, a plurality of short fingers extending from the annular portion and operably arranged to connect the retainer to the connector body, and a plurality of long fingers extending from the annular portion, wherein when the retainer is connected to the connector body, the plurality of long fingers extend from the second end out of the connector body.

[0007] In some embodiments, the connector body further includes at least one recess disposed near the second end. In some embodiments, each of the plurality of short fingers includes a radially outwardly extending protrusion operatively arranged to engage at least one recess to lock the retainer in the connector body. In some embodiments, the connector body further includes at least one aperture aligned with at least one recess, wherein the at least one aperture provides an entrance to the radially outwardly extending protrusion when the retainer is attached to the connector body. In some embodiments, at least one recess includes a continuous truncated conical radially inwardly facing surface. In some embodiments, at least one recess includes a plurality of circumferentially spaced pouches. In some embodiments, the fluid connection assembly further includes a tube including a shoulder, each of the plurality of long fingers including a radially inwardly extending protrusion operatively arranged to engage the shoulder outside the connector body to lock the tube to the retainer.

[0008] According to the aspects shown herein, a fluid connection assembly including a connector body is provided, the connector body including a first end, a second end, a first through-hole, a sealing sleeve, and at least one seal disposed in the sealing sleeve, a retainer detachably connected to the connector body, the retainer including an annular portion operatively arranged to seal at least one seal in the sealing sleeve, at least one short finger extending from the annular portion, completely sealed within the connector body and operatively arranged to lock the retainer to the connector body, and at least one long finger extending from the annular portion, wherein a plurality of long fingers engage a shoulder outside the connector body to lock a tube to the retainer.

[0009] Based on the aspects described herein, quick connector assemblies or quick connection mechanisms are provided that offer an ergonomic and durable connection between a tube and a connector body. The quick connector assembly addresses several issues: the design of the connection assembly reduces the force required to insert the tube into the connector body; the design of the connection assembly drives geometric changes within the connector body, simplifying the manufacturing of the connector body and reducing its cost; the design of the connection assembly improves the retention force of the tube on the connector body while minimizing axial movement of the tube; the design of the connection assembly provides easier maintenance and disassembly; and the design of the connection assembly simplifies the assembly process of the connector body and the insertion of the tube into the connector body.

[0010] In some embodiments, the connection assembly includes a connector body, a tube, and a plastic retainer. The plastic or polymer retainer replaces current metal retainer technology, reducing insertion force and manufacturing costs, and simplifying overall assembly. In some embodiments, the retainer forms half (upper half) of a seal or O-ring seal.

[0011] In some embodiments, the connector body includes a straight bore to improve manufacturability and reduce cost. An O-ring is placed in an open O-ring seal. One (or more) spare rings are placed on top of the O-ring. The plastic retainer has a large base diameter at the base, thus creating a seal on the top surface of the O-ring seal to seal the assembly. This monolithic retainer has short and long fingers. The short fingers connect the retainer to the connector body, and the long fingers connect the tube to the retainer.

[0012] A single retainer provides three functions: it creates a top sealing surface for the O-ring seal; it secures itself within the connector body (via the short finger); and it secures the tube (via the long finger). The short finger, which snaps into the connector body, has the same profile angle as the mating shoulder or protrusion of the connector body recess. In some embodiments, the angle of the short finger protrusion and the concave surface of the connector body may include a 15-degree angle to allow for easier assembly (i.e., lower insertion force) and also improve retention force. When the retainer is pressed / inserted into the connector body, it snaps under the top platform of the concave shoulder. Circumferentially arranged through-holes in the connector body also allow access to the snap-fit, for example, by disconnecting the connection.

[0013] The long fingers of the retainer are operatively arranged to allow easy insertion of the tube and restrict axial movement of the tube relative to the retainer (and connector body). As the tube is inserted into the retainer (and connector body), the long fingers easily expand (due to the thinning of the legs by recesses in the legs, allowing for a more spring-like action) and snap back to engage the tube coil. The radius of the snap is perpendicular to the radius of the tube coil. This is optimized to maintain the retaining force of the tube.

[0014] In some embodiments, a retainer is provided for a new tube design including a short finger and a long finger. The retainer serves as the top of an O-ring groove / seal and a sealing surface. A through-hole arranged circumferentially on the connector body allows access to the short finger. The short finger engages in a recess or pouch within the connector body to lock the retainer within the connector body. The long finger engages at the edge of the tube and locks the tube to the retainer (and the connector body).

[0015] These and other objects, features and advantages of this disclosure will become apparent from the accompanying drawings and appended claims upon studying the following detailed description of this disclosure. Attached Figure Description

[0016] Various embodiments are disclosed by way of example only, with reference to the accompanying drawings, wherein corresponding reference numerals denote corresponding parts, wherein:

[0017] Figure 1 This is a perspective view of the fluid connection assembly;

[0018] Figure 2 yes Figure 1 An exploded perspective view of the fluid connection assembly shown;

[0019] Figure 3A yes Figure 1 Perspective view of the retainer shown;

[0020] Figure 3B yes Figure 3A The front view of the retainer is shown;

[0021] Figure 4 It is roughly along Figure 1 Cross-sectional view of the fluid connection assembly taken along centerline 4-4;

[0022] Figure 5 It is roughly along Figure 1 A cross-sectional view of the fluid connection assembly taken along centerline 5-5;

[0023] Figure 6 This is a perspective view of the fluid connection assembly;

[0024] Figure 7 yes Figure 6 An exploded perspective view of the fluid connection assembly shown;

[0025] Figure 8A yes Figure 6 Perspective view of the retainer shown;

[0026] Figure 8B yes Figure 8A The front view of the retainer is shown;

[0027] Figure 9 It is roughly along Figure 6 A cross-sectional view of the fluid connection assembly taken along centerline 9-9; and,

[0028] Figure 10 It is roughly along Figure 6 A cross-sectional view of the fluid connection assembly taken along centerline 10-10. Detailed Implementation

[0029] First, it should be understood that similar figures on different drawings indicate the same or functionally similar structural elements. It should also be understood that the claims are not limited to the disclosed aspects.

[0030] Furthermore, it should be understood that this disclosure is not limited to the specific methods, materials, and modifications described, and variations are naturally possible. It should also be understood that the terminology used herein is for descriptive purposes only and is not intended to limit the scope of the claims.

[0031] 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 any methods, apparatus, or materials similar to or equivalent to those described herein may be used in practice or testing of the exemplary embodiments. Components of this disclosure may be hydraulically, electronically, pneumatically, and / or spring-driven.

[0032] It should be understood that the term "substantially" is synonymous with terms such as "almost," "more or less," "approximately," "probably," "close to," "generally," "near," "adjacent to," and "nearby," and these terms may be used interchangeably when they appear in the specification and claims. It should be understood that the term "approximately" is synonymous with terms such as "nearby," "close to," "adjacent," "adjacent to," "contiguous," and "adjacent to," and these terms may be used interchangeably when they appear in the specification and claims. The term "approximately" is intended to mean a value within ten percent of a specific value.

[0033] It should be understood that, unless otherwise stated, the use of “or” in this application pertains to “non-exclusive” arrangements. For example, when saying “item x is A or B”, it should be understood that this could mean one of the following: (1) item x is only one or the other of A and B; (2) item x is both A and B. Alternatively, the word “or” is not used to define an “exclusive or” arrangement. For example, an “exclusive or” arrangement stating “item x is A or B” would require that x can be only one of A and B. Furthermore, “and / or” as used herein is intended to mean a grammatical conjunction indicating that one or more of the stated elements or conditions may be included or occur. For example, an apparatus including a first element, a second element, and / or a third element is intended to be interpreted as any of the following structural arrangements: an apparatus including a first element; an apparatus including a second element; an apparatus including a third element; an apparatus including a first element and a second element; an apparatus including a first element and a third element; an apparatus including a first element, a second element, and a third element; or an apparatus including a second element and a third element.

[0034] Furthermore, as used herein, the phrases “comprising at least one” and “including at least one” in combination with a system or element are intended to mean that the system or element includes one or more elements listed after the phrase. For example, an apparatus comprising at least one first element, a second element, and a third element is intended to be interpreted as any 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. When the phrase “for at least one:” is used herein, it is intended to be interpreted similarly. Furthermore, as used herein, “and / or” is intended to mean a grammatical conjunction used to indicate that the one or more elements or conditions described herein may include or occur. For example, an apparatus comprising a first element, a second element, and / or a third element is intended to be interpreted as any 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.

[0035] A "non-rotatable connection" means that the elements are connected such that whenever one element rotates, all elements rotate; relative rotation between the elements is not possible. Radial and / or axial movement between non-rotatable connected elements is possible, but not required.

[0036] It should be understood that the term "pipe" as used herein is synonymous with hose, pipe, channel, conduit, or any other suitable conduit flow used in hydraulics and fluid mechanics. It should be further understood that the term "pipe" can mean a rigid or flexible conduit suitable for containing and allowing the flow of gas or liquid.

[0037] Now look at the attached image. Figure 1 This is a perspective view of the fluid connection component 10. Figure 2 This is an exploded perspective view of the fluid connection assembly 10. The fluid connection assembly 10 generally includes a tube 20 or tube end formation or hose, a connector body 40, and a retainer 70. The following description should refer to... Figures 1-2 read.

[0038] The tube 20 includes an end portion 22, a segment 23, a shoulder or ring 27, a segment 29, an end portion 30, and a through-hole 21. The through-hole 21 extends from the end portion 22 through the tube 20 to the end portion 30. The segment 23 is disposed between the end portion 22 and the shoulder 27 and includes a radially outward surface 24. The radially outward surface 24 includes a substantially constant diameter. The shoulder 27 is disposed between the segment 23 and the segment 29 and includes an outward surface 26. The outward surface 26 is curved (i.e., as shown in the image). Figure 4 As shown, preferably in a parabolic shape. Segment 29 is arranged between shoulder 27 and end 30, including radially outward surface 28. Radially outward surface 28 includes a substantially constant diameter. Tube 20 is arranged to be inserted into connector body 40 (specifically, end 22 is inserted first). Tube 20 is inserted into connector body 40 axially AD1 until retainer 70 engages with shoulder 27 and substantially engages with segment 29 (i.e., fingers 78A-C are aligned with segment 29), as will be described in more detail below. It should be understood that tube 20 can be any conventional tube end formation including a shoulder (e.g., a ramp) extending radially outward on the outer surface of the tube to displace the retainer of the connector body to secure the tube within the connector body. For example, tube 20 may include a shoulder having a straight ramp (i.e., a constant straight ramp) or a curved ramp. In some embodiments, tube 20 includes any tube end formation that can utilize the retainer. For example, tube 20 may include a notch, multiple ramps, threads, a shoulder with a variable diameter portion (ramp) and a constant diameter portion connected thereto, any standard Society of Automotive Engineers (SAE) end form, etc., rather than a raised edge or a ramped shoulder. The invention should not be limited to the use of the tube shown in the figures, but rather to any tube end formation suitable for flow connection to the connector body via the retainer. It should be understood that in some embodiments, as shown, tube 20 includes a frusto-conical surface at end 22. This frusto-conical surface helps to properly align tube 20 with the retainer 70 and connector body 40 during insertion of tube 20 into the retainer 70.

[0039] Figure 3A This is a perspective view of retainer 70. Figure 3B This is a front view of retainer 70. The following description should refer to... Figures 1-3B read.

[0040] The retainer 70 generally includes an annular portion 76 and a plurality of fingers (e.g., fingers 78A-C and fingers 82A-C) forming an end portion 72, and the plurality of fingers extending from the annular portion 76 and forming an end portion 74. The annular portion 76 is generally annular and includes a through-hole 71. In some embodiments, when the retainer 70 is fully inserted into the connector body 40, the end portion 72 is operatively arranged to form the rear half of a sealing structure or O-ring seal, as will be described in more detail below.

[0041] Finger portions 78A-C extend axially AD2 from annular portion 76 and are operatively arranged to engage shoulder 27 of tube 20. Each finger portion 78A-C includes a radially inwardly extending protrusion 80A-C. The protrusion 80A-C extends radially AD1 and, when engaged with shoulder 27, locks tube 20 in retainer 70 (and connector body 40). Finger portions 78A-C further include respective truncated conical surfaces 81A-C. As tube 20 is inserted into retainer 70 axially AD1, truncated conical surfaces 81A-C engage with surface 26 of shoulder 27, forcing finger portions 78A-C radially outward (i.e., radially RD2). Once protrusion 80A-C is aligned with segment 29, finger portions 78A-C radially inward and retract (i.e., radially RD1) snap inward and secure tube 20 within retainer 70. The fingers 78A-C are elastic and operably arranged to flex and / or bend relative to the annular portion 76. In some embodiments, the retainer 70 comprises a polymer. In some embodiments, the fingers 78A-C include recesses or thinned portions that allow for greater flexing.

[0042] Finger portions 82A-C extend axially AD2 from the annular portion 76 and are operatively arranged to engage with the protrusion 52 and surface 56 of the connector body 40. Each finger portion 82A-C includes a radially outwardly extending projection 84A-C. The projection 84A-C extends radially AD2 and, when engaged with the radially inwardly extending projection 52, locks the retainer 70 within the connector body 40. Each finger portion 82A-C further includes a truncated conical surface 85A-C. As the retainer 70 is inserted axially AD1 into the connector body 40, the truncated conical surface 85A-C engages with the protrusion 52 of the connector body 40, forcing the finger portion 82A-C radially inward (i.e., radially RD1). Once the projection 84A-C is aligned with the surface 56, the finger portion 82A-C latches radially outward and back (i.e., radially RD2) and secures the retainer 70 within the connector body 40. Specifically, the protrusion 52 of the connector body 40 engages with the protrusions 84A-C, thereby preventing displacement of the retainer 70 relative to the connector body 40 along the axial direction AD2. The fingers 82A-C are elastic and operably arranged to flex and / or bend relative to the annular portion 76. In some embodiments, when the retainer 70 is secured to the connector body 40, the fingers 82A-C and the protrusions 84A-C align with holes 49A-C. This alignment allows the user to displace the fingers 82A-C radially inward (i.e., along the radial direction AD1) to separate the protrusions 84A-C from the protrusion 52 and remove the retainer 70 from the connector body 40. The fingers 82A-C further include respective radially inward surfaces 86A-C. The radially inward surfaces 86A-C are operably arranged to engage the radially outward surfaces 24 of the tube 20, particularly the segment 23. In some embodiments, as shown, the fingers 78A-C and 82A-C alternate circumferentially. In some embodiments, fingers 78A-C and fingers 82A-C do not alternate for every single finger.

[0043] Figure 4 It is roughly along Figure 1 A cross-sectional view of the fluid connection assembly 10 taken along centerline 4-4. Figure 5 It is roughly along Figure 1 A cross-sectional view of the fluid connection assembly 10 taken along centerline 5-5. The following description should refer to... Figures 1-5 read.

[0044] The connector body 40 includes end portion 44, end portion 46, and a through-hole 42 extending from end portion 44 to end portion 46. The connector body 40 includes a radially outward surface 48 and a radially outward surface 50, surface 48 including one or more release holes (e.g., 49A-C). Holes 49A-C are operatively arranged to align with fingers 82A-C and allow a user to radially inwardly displace fingers 82A-C to disengage protrusions 84A-C from protrusions 52. The radially outward surface 50 is operatively arranged to connect the connector body 40 to another component and may include threads. The connector body 40 further includes a radially inwardly extending protrusion 52 having a (axial) surface 54, a truncated conical surface 56, a sealing sleeve or surface 58, and a radially inward surface 60. The radially inward surface 60 is operatively arranged to engage the radially outward surface 24 of the connecting tube 20. The sealing sleeve 58 is operatively arranged to at least partially seal one or more seals (e.g., seals 62 and 64). In some embodiments, the fluid connection assembly 10 includes an O-ring 62 and a spare ring 64 disposed in a sealing sleeve 58. When the retainer 70 is locked in the connector body 40, the end 72 completely encloses the seals 62 and 64 within the sealing sleeve 58. The seals 62 and 64 are operatively arranged to engage with the radially outward surface 24 to fluidly seal the connector body 40 and the tube 20. It should be understood that in some embodiments, the sealing sleeve 58 is arranged to completely enclose the recesses in the radially inward surface 60 on both sides of one or more seals. In such embodiments, the end 72 of the retainer 70 does not enclose the seals within the sealing sleeve. The truncated conical surface 56 and the protrusions 52 (particularly surface 54) are operatively arranged to engage the protrusions 84A-C of the fingers 82A-C to lock the retainer 70 within the connector body 40, as previously described.

[0045] To assemble the fluid connection assembly 10, seals 62 and 64 are arranged in the sealing sleeve 58, and then the retainer 70 is inserted into the connector body 40 along the axial direction AD1 (end 72 is inserted first). As the retainer 70 is inserted into the connector body 40, the truncated conical surfaces 85A-C of the protrusions 84A-C engage with the radially inwardly extending protrusions 52, thereby displacing the fingers 82A-C radially inward. Once the protrusions 84A-C are properly aligned with the truncated conical surface 56, the fingers 82A-C snap radially outward and back, and the protrusions 84A-C engage with the surface 54 of the protrusions 52, thereby securing the retainer 70 in the connector body 40. Then, the tube 20 is inserted into the retainer 70 along the axial direction AD1 (end 22 is inserted first). As the tube 20 is inserted into the retainer 70, the truncated conical surfaces 81A-C of the protrusions 80A-C engage with the shoulder 27, displacing the fingers 78A-C radially outward. Once the protrusions 80A-C are aligned with the segment 29, the fingers 78A-C snap inward and back, and the protrusions 80A-C engage with the shoulder 27 and the radially outward surface 28, thereby securing the tube 20 in the retainer 70.

[0046] It should be understood that when the retainer 70 is fully assembled to the connector body 40, the fingers 78A-C extend out of the connector body 40 along the axial direction AD2. Therefore, when the tube 20 is subsequently inserted into the retainer 70, the protrusions 80A-C of the fingers 78A-C engage with the shoulder 27 on the outside of the connector body 40, rather than internally. This is advantageous because it allows for greater flexure of the fingers 78A-C, thus requiring a lower insertion force to insert the tube 20 into the retainer 70 (and connector body 40).

[0047] Figure 6 This is a perspective view of the fluid connection assembly 110. Figure 7 This is an exploded perspective view of the fluid connection assembly 110. The fluid connection assembly 110 generally includes a tube 120 (or tube end type or hose), a connector body 140, and a retainer 170. The following description should refer to... Figures 6-7 read.

[0048] The tube 120 includes an end portion 122, a segment 123, a shoulder or recess 127, a segment 129, an end portion 132, and a through-hole 121. The through-hole 121 extends from the end portion 122 through the tube 120 to the end portion 132. The segment 123 is disposed between the end portion 122 and the shoulder 127 and includes a radially outward surface 124. The radially outward surface 124 includes a substantially constant diameter. The shoulder 127 is disposed between the segment 123 and the segment 129 and includes a shoulder (or axial) surface 126 and a radially outward surface 128. The radially outward surface 128 is frustoconical, with its diameter decreasing along the axial direction AD1. The segment 129 is disposed between the shoulder 127 and the end portion 132 and includes a radially outward surface 130. The radially outward surface 130 includes a substantially constant diameter. The tube 120 is arranged to be inserted into the connector body 140 (specifically, the end portion 122 is inserted first). The tube 120 is inserted into the connector body 140 along the axial direction AD1 until the retainer 170 is engaged over or into the shoulder 127 and substantially engages with the surface 126 (i.e., the fingers 178A-C are aligned with the radially outward-facing surface 128), as described in more detail below. It should be understood that the tube 120 can be any conventional tube end form including a shoulder (e.g., a ramp or convex edge) extending radially outward on the outer surface of the tube to displace the retainer of the connector body to secure the tube within the connector body. For example, the tube 120 may include a shoulder with a straight ramp (i.e., a constant straight ramp) or a curved ramp. In some embodiments, the tube 120 includes any tube end form that utilizes the retainer. For example, the tube 120 may include a ramp, convex edge, notch, multiple ramps, threads, a shoulder with a variable diameter portion (ramp) and a constant diameter portion connected thereto, any standard Society of Automotive Engineers (SAE) end form, etc., rather than a groove. This invention is not limited to the use of the tube shown in the figures, but to any tube end form suitable for flow connection to the connector body via the retainer. It should be understood that in some embodiments, as shown, the tube 120 includes a truncated conical surface at end 122. This truncated conical surface engages with protrusions 180A-C, and particularly truncated conical surfaces 181A-C, forcing the fingers 178A-C radially outward during insertion of the tube 120 into the retainer 170.

[0049] Figure 8A This is a perspective view of retainer 170. Figure 8B This is a front view of retainer 170. The following description should refer to... Figures 6-8B read.

[0050] The retainer 170 generally includes an annular portion 176 and a plurality of fingers (e.g., fingers 178A-C and fingers 182A-C) forming an end portion 172, the plurality of fingers extending from the annular portion 176 and forming an end portion 174. The annular portion 176 is generally annular and includes a through-hole 171. In some embodiments, when the retainer 170 is fully inserted into the connector body 140, the end portion 172 is operatively arranged to form the rear half of a sealing structure or O-ring, as will be described in more detail below.

[0051] Finger portions 178A-C extend axially AD2 from annular portion 176 and are operatively arranged to engage shoulder 127 of tube 120. Each finger portion 178A-C includes a radially inwardly extending protrusion 180A-C. The protrusion 180A-C extends radially AD1 and, when engaged with shoulder 127, locks tube 120 in retainer 170 (and connector body 140). Finger portions 178A-C further include respective truncated conical surfaces 181A-C. As tube 120 is inserted axially AD1 into retainer 170, truncated conical surfaces 181A-C engage radially outward surfaces 124 of segment 123, forcing finger portions 178A-C radially outward (i.e., radially RD2). In its non-flexible state, the inner diameter of the protrusions 180A-C is smaller than the diameter of the radially outward surface 124, causing the fingers 178A-C to displace outward upon engagement with segment 123. Once the protrusions 180A-C are aligned with the radially outward surface 128, the fingers 178A-C snap inward and back (i.e., radially RD1), securing the tube 120 within the retainer 170. Specifically, the protrusions 180A-C engage with the radially outward surfaces 128 and 126 to prevent displacement of the tube 120 relative to the retainer 170 along the axial direction AD2. The fingers 178A-C are resilient and operably arranged to flex and / or bend relative to the annular portion 176. In some embodiments, the retainer 170 comprises a polymer.

[0052] Finger portions 182A-C extend axially AD2 from annular portion 176 and are operatively arranged to engage with pouch portions 152A-C and surface 154 of connector body 140. Each finger portion 182A-C includes a radially outwardly extending protrusion 184A-C. The protrusion 184A-C extends radially AD2 and, when engaged with pouch portions 152A-C, particularly with surface 154, locks retainer 170 in connector body 140. Each finger portion 182A-C further includes a truncated conical surface 185A-C. As retainer 170 is inserted axially AD1 into connector body 140, truncated conical surface 185A-C engages with end portion 144 of connector body 140, forcing finger portions 182A-C radially inward (i.e., radially RD1). Once the protrusions 184A-C are aligned with the pouches 152A-C, the fingers 182A-C snap radially outward and back (i.e., radially RD2), securing the retainer 170 within the connector body 140. Specifically, the surface 154 of each pouch 152A-C of the connector body 140 engages with the protrusions 184A-C, thereby preventing displacement of the retainer 170 relative to the connector body 140 along the axial direction AD2. The fingers 182A-C are resilient and operably arranged to flex and / or bend relative to the annular portion 176. In some embodiments, when the retainer 170 is secured in the connector body 140, the fingers 182A-C and protrusions 184A-C align with holes 149A-C. Such alignment allows the user to displace the fingers 182A-C radially inward (i.e., along radial AD1) to separate the protrusions 184A-C from the pouch 152A-C and remove the retainer 170 from the connector body 140. It should be understood that the pouch 152A-C facilitates proper alignment of the fingers 182A-C with the holes 149A-C. Furthermore, in some embodiments, the retainer 170 is non-rotatably connected to the connector body 140 when the protrusions 184A-C are fully engaged with the pouch 152A-C. The retainer 170 further includes a radially inward surface 186. The radially inward surface 186 is operatively arranged to engage the radially outward surface 124 of the tube 120, particularly the segment 123. In some embodiments, as shown, the fingers 178A-C and 182A-C alternate circumferentially. In some embodiments, the fingers 178A-C and 182A-C do not alternate for every single finger. In some embodiments, fingers 178A-C are separated from fingers 182A-C by a gap 188. The gap 188 between fingers 178A-C and 182A-C can further cause elastic displacement (i.e., flexure). It should be understood that in some embodiments, as shown, the retainer 170 includes a truncated conical surface at end 172. This truncated conical surface helps to properly align the retainer 170 relative to the connector body 140 during insertion of the retainer 170 into the connector body 140.

[0053] Figure 9 It is roughly along Figure 6 A cross-sectional view of the fluid connection assembly 110 taken along centerline 9-9. Figure 10 It is roughly along Figure 6 A cross-sectional view of the fluid connection assembly 110 taken along centerline 10-10. The following description should refer to... Figures 6-10 read.

[0054] Connector body 140 includes end portion 144, end portion 146, and through-hole 142 extending from end portion 144 to end portion 146. Connector body 140 includes radially outward surface 148 and radially outward surface 150, surface 148 including one or more release holes (e.g., 149A-C). Holes 149A-C are operatively arranged to align with fingers 182A-C and allow a user to radially inwardly displace fingers 182A-C to separate protrusions 184A-C from pouches 152A-C. Radially outward surface 150 is operatively arranged to connect connector body 140 to another component and may include threads. Connector body 140 further includes radially outwardly extending pouches 152A-C, each pouch 152A-C including (axial) surface 154, radially inward surface 156, a sealing sleeve or surface 158, and radially inward surface 160. A radially inward surface 160 is operatively arranged to engage a radially outward surface 124 of the tube 120. Surfaces 158 and 156 are operatively arranged to at least partially enclose one or more seals (e.g., seals 162, 164, and 166). In some embodiments, the fluid connection assembly 110 includes an O-ring 162, a spare ring 164, and a spare ring 166 arranged in a sealing sleeve 158. When the retainer 170 is locked in the connector body 140, the end 172 completely encloses the seals 162, 164, and 166 within the sealing sleeve 158. Seals 162, 164, and 166 are operatively arranged to engage the radially outward surface 124 to fluidly seal the connector body 140 and the tube 120. It should be understood that in some embodiments, the sealing sleeve 158 is arranged to completely enclose the grooves in the radially inward surface 160 on both sides of one or more seals. In this embodiment, the end 172 of the retainer 170 does not enclose the seal within a sealing sleeve. The pouch-like portions 152A-C (particularly surface 154) are operatively arranged to engage the protrusions 184A-C of the fingers 182A-C to lock the retainer 170 within the connector body 140, as previously described. The radially inward surface 156 further engages with the radially outward surface of the retainer 170.

[0055] To assemble the fluid connection assembly 110, seals 162, 164, and 166 are arranged in the sealing sleeve 158, and then the retainer 170 is inserted into the connector body 140 along the axial direction AD1 (end 172 is inserted first). As the retainer 170 is inserted into the connector body 140, the truncated conical surfaces 185A-C of the protrusions 184A-C engage with the ends 144 of the connector body 140, thereby displacing the fingers 182A-C radially inward. Once the protrusions 184A-C are properly aligned with the pocket surfaces 152A-C, the fingers 182A-C snap radially outward and back, and the protrusions 184A-C engage with the surfaces 154 of the pocket 152A-C, thereby securing the retainer 170 in the connector body 140. The tube 120 is then inserted into the retainer 170 along the axial direction AD1 (end 122 is inserted first). As the tube 120 is inserted into the retainer 170, the truncated conical surfaces 181A-C of the protrusions 180A-C engage with the segments 123, particularly the radially outward-facing surface 124, displacing the fingers 178A-C radially outward. Once the protrusions 180A-C are aligned with the radially outward-facing surface 128, the fingers 178A-C snap inward and back, and the protrusions 180A-C engage with the shoulder 127, particularly with the radially outward-facing surfaces 128 and 126, thereby securing the tube 120 in the retainer 170.

[0056] It should be understood that when the retainer 170 is fully assembled into the connector body 140, the fingers 178A-C extend out of the connector body 140 along the axial direction AD2. Therefore, when the tube 120 is subsequently inserted into the retainer 170, the protrusions 180A-C of the fingers 178A-C engage with the shoulder 127 on the outside of the connector body 140, rather than internally. This is advantageous because it allows for greater flexure of the fingers 178A-C, thus requiring a lower insertion force to insert the tube 120 into the retainer 170 (and connector body 140).

[0057] It should be understood that the various aspects disclosed above, as well as other features and functions or alternatives thereof, can be ideally combined into many other different systems or applications. Various currently unforeseen or unpredictable alternatives, modifications, variations, or improvements thereof may subsequently be made by those skilled in the art and are also intended to be included in the following claims.

[0058] List of reference numerals

[0059] 10. Fluid Connection Assembly 123 Part

[0060] 20 Pipe (or pipe end forming or hose) 124 Radial outward surface

[0061] 21 through holes, 126 surface

[0062] 22 End portion 127 Shoulder (or groove)

[0063] 23 parts, 128 radially outward-facing surfaces

[0064] 24 radially outward-facing surfaces, 129 parts

[0065] 26 outward-facing surface 130 radially outward-facing surface

[0066] 27 Shoulder (or raised edge) 132 End

[0067] 28 radially outward-facing surfaces 140 connector body

[0068] 29 sections, 142 through holes

[0069] 30 end 144 end

[0070] 40 connector body 146 end

[0071] 42 through holes, 148 radially outward-facing surface

[0072] 44 End 149A Hole

[0073] 46 End 149B Hole

[0074] 48 Radial outward surface 149C hole

[0075] 49A Hole 150 Radial Outward Surface

[0076] 49B Hole 152A Bag-like Part

[0077] 49C pore 152B bag-shaped part

[0078] 50 Radial outward surface 152C Bag-like portion

[0079] 52 protrusions 154 surfaces

[0080] 54 Surface 156 Radial Inward Surface

[0081] 56 surface, 158 surface (or sealing sleeve)

[0082] 58 Sealing sleeve (or surface) 160 Radial inward surface

[0083] 60 radially inward surface 162 seal

[0084] 62 seals 164 seals

[0085] 64 seal 166 seal

[0086] 70 retainer 170 retainer

[0087] 71 through hole 171 through hole

[0088] 72 end 172 end

[0089] 74 end 174 end

[0090] 76-ring section 176-ring section

[0091] 78A finger section 178A finger section

[0092] 78B finger section 178B finger section

[0093] 78C finger section 178C finger section

[0094] 80A protrusion 180A protrusion

[0095] 80B protrusion 180B protrusion

[0096] 80C protrusion 180C protrusion

[0097] 81A surface 181A surface

[0098] 81B surface 181B surface

[0099] 81C surface 181C surface

[0100] 82A finger section 182A finger section

[0101] 82B finger section 182B finger section

[0102] 82C finger section 182C finger section

[0103] 84A protrusion 184A protrusion

[0104] 84B protrusion 184B protrusion

[0105] 80C protrusion 184C protrusion

[0106] 85A surface 185A surface

[0107] 85B surface 185B surface

[0108] 81C surface 185C surface

[0109] 86A Radial inward surface 186 Radial inward surface

[0110] 86B radially inward surface 188 slot

[0111] 86C radially inward surface AD1 axial

[0112] 110 Fluid Connection Assembly AD2 Axial

[0113] 120 pipe (or pipe end forming or hose) RD1 radial

[0114] 121 Through Hole RD2 Radial

[0115] 122 end

Claims

1. A fluid connection assembly, comprising: Connector body, including: First end; The second end includes a radially inwardly extending protrusion; First through hole; Sealing sleeve; and, At least one seal is disposed within the sealing sleeve; and, A retainer, operatively arranged to be detachably connected to the connector body, the retainer comprising: An annular portion forms a third end, the third end being operatively arranged to enclose the at least one seal in the sealing sleeve; At least one short finger-like portion extending from the annular portion; and At least one long finger extends from the annular portion and terminates at a fourth end; When the retainer is connected to the connector body, at least one long finger extends out of the connector body from the second end, and at least one short finger does not extend axially out of the connector body.

2. The fluid connection assembly of claim 1, wherein the at least one short finger includes a radially outwardly extending protrusion operatively arranged to engage the radially inwardly extending projection.

3. The fluid connection assembly of claim 2, wherein the radially outwardly extending protrusion comprises a truncated conical surface.

4. The fluid connection assembly according to claim 2, wherein: The connector body further includes a truncated conical radially inward surface adjacent to the protrusion; and, The radially outwardly extending protrusions are operatively arranged to engage with the radially inwardly facing truncated conical surface.

5. The fluid connection assembly of claim 4, wherein the connector body further includes at least one hole aligned with the radially inward surface of the truncated conical shape.

6. The fluid connection assembly of claim 5, wherein when the retainer is connected to the connector body, the at least one hole is aligned with the at least one short finger.

7. The fluid connection assembly of claim 1, wherein the at least one long finger includes a radially inwardly extending protrusion.

8. The fluid connection assembly of claim 7, further comprising a tube including a shoulder, wherein the radially inwardly extending protrusion is operatively arranged to engage the shoulder to lock the tube in the retainer.

9. The fluid connection assembly of claim 1, wherein the at least one short finger and the at least one long finger are separated by at least one gap.

10. The fluid connection assembly of claim 2, wherein the connector body further includes a pouch-like portion, and the radially outwardly extending protrusion is operatively arranged to engage the pouch-like portion.

11. The fluid connection assembly of claim 10, wherein the connector body further includes at least one hole aligned with the pouch portion, wherein the at least one hole provides an inlet for the radially outwardly extending protrusion.

12. The fluid connection assembly of claim 1, wherein the retainer comprises a polymer.

13. A fluid connection assembly, comprising: Connector body, including: First end; The second end; First through hole; Sealing sleeve; and, At least one seal is disposed within the sealing sleeve; and, A retainer, detachably connected to the connector body, the retainer comprising: Ring-shaped part; Multiple short fingers, extending from the annular portion and operatively arranged to connect the retainer to the connector body; and, Multiple long finger-like portions extend from the ring-shaped portion; When the retainer is connected to the connector body, the plurality of long fingers extend out of the connector body from the second end, and the plurality of short fingers are arranged to be completely located within the connector body.

14. The fluid connection assembly of claim 13, wherein the connector body further includes at least one recess disposed near the second end.

15. The fluid connection assembly of claim 14, wherein each of the plurality of short fingers includes a radially outwardly extending protrusion operatively arranged to engage the at least one recess to lock the retainer in the connector body.

16. The fluid connection assembly according to claim 15, wherein, The connector body further includes at least one hole aligned with the at least one recess, wherein when the retainer is connected to the connector body, the at least one hole provides an entry point for the radially outwardly extending protrusion.

17. The fluid connection assembly of claim 14, wherein the at least one recess comprises a continuous truncated conical radially inward surface.

18. The fluid connection assembly of claim 14, wherein the at least one recess comprises a plurality of circumferentially spaced pouch-like portions.

19. The fluid connection assembly according to claim 13, wherein: The fluid connection assembly further includes a tube, which includes a shoulder; Each of the plurality of long fingers includes a radially inwardly extending protrusion; and, The radially inwardly extending protrusion is operatively arranged to engage with a shoulder on the outside of the connector body to lock the tube to the retainer.

20. A fluid connection assembly, comprising: Connector body, including: First end; The second end; First through hole; Sealing sleeve; and, At least one seal is disposed in the sealing sleeve; A retainer, detachably connected to the connector body, the retainer comprising: The annular portion is operatively arranged to seal the at least one seal within the sealing sleeve; At least one short finger, extending from the annular portion, is completely enclosed within the connector body and operatively arranged to lock the retainer to the connector body; and, At least one long finger-like portion extending from the annular portion; and, The tube includes a shoulder, wherein at least one long finger engages with the shoulder outside the connector body to lock the tube to the retainer.

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