Tamper-resistant fluid connection assembly with visual connection verification

Abstract

1. A fluid connection assembly comprising: a connector body including a first end, a second end, a first through hole, a first radially outward surface including at least one opening extending from the first radially outward surface to the first through hole, and at least one detent disposed in the at least one opening; and a collar connected to the connector body, the collar including a first section non-rotatably connected to the connector body and a second section including a radially inward surface engaging the first radially outward surface and including at least one pocket extending radially outward therefrom, the second section engaging with the first section and rotatable relative to the first section.

Description

[Technical Field]

[0001] The present disclosure relates to fluid connectors, and more particularly to a fluid connection assembly that includes a retainer that prevents disassembly and provides visual connection verification. [Background technology]

[0002] Fluid connectors, fluid connections, and fluid connection assemblies are essential components for many applications, especially automotive applications. Because automotive systems consist of various components, such as the radiator, transmission, and engine, fluid 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 the transmission oil cooler to reduce the temperature of the transmission fluid. Another example of a fluid moving between components is a cooling conduit carrying a refrigerant. Refrigerant is a substance or mixture (usually a liquid) used in heat pumps and refrigeration cycles, which can be dangerous. Therefore, it is important that the fluid connectors of the cooling conduits are properly secured to prevent the refrigerant from being released.

[0003] Fluids are primarily transferred between components via flexible or rigid hoses connected to each component by fluid connectors. Such fluid connectors typically include a retaining clip, retaining ring clip, or snap ring mounted on the connector body that is adapted to snap behind a raised shoulder on the tubing when the tubing is fully inserted into the connector body. However, installing the retaining clip on the connector body can be difficult during the assembly process, and improper installation of the retaining clip can jeopardize the structural integrity of the retaining clip. Additionally, the force required to engage the tubing with the connector body and overcome the radial force of the retaining clip is prohibitive in current designs. Furthermore, because retaining clips are very thin and small, they are easily lost if dropped or misplaced. Furthermore, some connection assembly solutions are time-consuming to secure and require tools for the assembly process.

[0004] Another problem with existing fluid connection assembly designs is that they can easily be separated, potentially releasing hazardous refrigerants or other harmful fluids into the environment. Current fluid connection assembly designs do not include tamper-resistant features to prevent disassembly. Additionally, current fluid connection assembly designs do not include features that indicate when an attempt to separate the fluid connection assembly has occurred (i.e., tamper detection features).

[0005] Accordingly, there has been a long felt need for a fluid connection assembly that includes a retainer that prevents disassembly, provides visual connection verification and tamper detection, and reduces the insertion force required for assembly. Summary of the Invention

[0006] According to aspects described herein, a fluid connection assembly is provided, comprising: a connector body including a first end, a second end, a first through hole, a first radially outward surface including at least one opening extending from the first radially outward surface to the first through hole, and at least one detent disposed in the at least one opening; and a collar connected to the connector body, the collar including a first section non-rotatably connected to the connector body and a second section including a radially inward surface that engages with the first radially outward surface and including at least one pocket extending radially outward therefrom, wherein the second section engages with the first section and is rotatable relative to the first section.

[0007] In some embodiments, in the unlocked state, the at least one detent engages with the at least one pocket, and in the locked state, the at least one detent engages with the radially inward surface and extends into the first through-hole. In some embodiments, the at least one pocket increases in depth in the first circumferential direction. In some embodiments, the at least one opening is frusto-conical. In some embodiments, the first section further comprises an arm including a protrusion, and the second section further comprises a recess, wherein the protrusion is configured to engage with the recess to maintain the unlocked state of the fluid connection assembly. In some embodiments, the second section further comprises a second through-hole disposed within the recess, and the at least one detent is configured to engage with the second through-hole to displace the protrusion radially outward. In some embodiments, the fluid connection further comprises a spring element disposed between the first section and the second section, wherein the spring element is configured to bias the fluid connection assembly toward the locked state. In some embodiments, the first section further comprises a loop, and the second section further comprises a latch configured to engage with the loop to non-rotatably connect the second section to the first section. In some embodiments, the latch comprises a first radially inner portion configured to engage with the loop to non-rotatably connect the second section to the first section, and a second radially outer portion that completely overlaps the first radially inner portion. In some embodiments, in the unlocked state, the second section is rotatable relative to the first section, and in the locked state, the second section is non-rotatably connected to the first section. In some embodiments, the fluid connection assembly further comprises a retaining ring that is disposed in a groove in the connector body to connect the collar to the connector body. In some embodiments, the fluid connection assembly further comprises a tube including a shoulder, and the at least one detent is configured to engage the shoulder to secure the tube to the connector body. In some embodiments, the shoulder comprises a first frusto-conical surface that increases in diameter in a first axial direction and a second frusto-conical surface extending from the first frusto-conical surface and decreasing in diameter in the first axial direction.

[0008] According to aspects described herein, a fluid connection assembly is provided, the fluid connection assembly including: a connector body including a first end, a second end, a first through hole, a first radially outward surface including at least one opening extending from the first radially outward surface to the first through hole, and at least one detent disposed in the at least one opening; and a collar connected to the connector body, the collar including: a first section non-rotatably connected to the connector body; a second section including a radially inward surface that engages with the first radially outward surface and that includes at least one pocket extending radially outward therefrom, the second section engaging with the first section and rotatable relative to the first section; and a spring element disposed between the first section and the second section, the spring element configured to bias the fluid connection assembly toward a locked state.

[0009] In some embodiments, in the unlocked state, the at least one detent engages with the at least one pocket, and in the locked state, the at least one detent engages with the radially inward surface and extends into the first through-hole. In some embodiments, the at least one pocket increases in depth in the first circumferential direction. In some embodiments, the first section further comprises an arm including a protrusion, and the second section further comprises a recess, wherein the protrusion is configured to engage with the recess to maintain the unlocked state of the fluid connection assembly. In some embodiments, the second section further comprises a second through-hole disposed within the recess, and the at least one detent is configured to engage with the second through-hole to disengage the protrusion from the recess. In some embodiments, the first section further comprises a loop, and the second section further comprises a latch configured to engage with the loop to non-rotatably connect the second section and the first section. In some embodiments, the latch comprises a first radially inner portion configured to engage the loop to non-rotatably connect the second section and the first section, and a second radially outer portion that completely overlaps the first radially inner portion.

[0010] According to aspects presented herein, a locking, tamper-resistant fluid quick connect or connection assembly is provided that includes a visual connection verification feature. The fluid connection assembly provides for quick connection of air conditioning conduits carrying refrigerant or other fluids under automotive assembly line conditions. The fluid connection assembly may also provide a visual indication that full engagement of the fluid connection assembly has been achieved.

[0011] The fluid connection assembly of the present disclosure provides a user with a tool- and hardware-free fluid connection assembly with visual connection verification for use with fluid conduits (e.g., air conditioning conduits carrying refrigerant). The fluid connection assembly eliminates the need for tools (such as power tools) and reduces potentially adverse ergonomic aspects caused by awkward assembly positions when connecting tubes. The fluid connection assembly includes a positive visual indicator that shows when the tube end formation is fully engaged with the connector body and a tamper detection feature after the connection is made. In some embodiments, the fluid connection assembly includes a collar including at least one ball that presses a sealing surface of the tube end formation against a face of the connector body. The at least one ball is disposed on a radially inward-facing surface of the collar. Rotation of the collar forces the ball radially inward, causing the sealing surface of the tube end formation to engage the sealing surface of the connector body. In some embodiments, the fluid connection assembly includes a tamper detection locking feature that indicates whether a locked connection has been tampered with (i.e., an unauthorized attempt to separate the fluid connection assembly).

[0012] In some embodiments, the fluid connection assembly includes a collar that is rotated to engage a ball that presses the tube end formation into a sealing area of ​​the connector body. Once the collar is fully rotated, a locking mechanism non-rotatably connects the collar to the connector body, preventing the tube end formation from being removed from the connector body. A tamper-resistant detection feature covers the locking mechanism and prevents it from being unlocked. In some embodiments, the locking mechanism may include a color scheme that indicates the locking mechanism, i.e., full engagement of the tube within the connector body. For example, the locking mechanism may include an arm and a protrusion that engages with a recess. The recess may include a section with a color (e.g., red) that is visible in the locked state (i.e., when the protrusion is not engaged with the recess) but not in the unlocked state (i.e., when the protrusion is engaged with the recess). Engagement of the protrusion with the recess in the unlocked position prevents the collar from snapping into the locked position due to the biasing force of the spring element. The locking element further includes a latch and a loop, where the latch engages the loop to non-rotatably lock the collar to the connector body. In some embodiments, the latch cannot disengage from the loop without plastic deformation, thereby indicating that tampering has occurred.

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

[0014] Various embodiments are disclosed, by way of example only, with reference to the accompanying schematic drawings in which corresponding reference symbols indicate corresponding parts and in which: [Figure 1A] FIG. 1 is a perspective view of a fluid connection assembly in a locked state. [Figure 1B] FIG. 1B is a perspective view of the fluid connection assembly shown in FIG. 1A in an unlocked state. [Figure 2] FIG. 1B is an exploded perspective view of the fluid connection assembly shown in FIG. 1A. [Figure 3]FIG. 1 is a perspective view of a first section of a collar. [Figure 4] FIG. 10 is a perspective view of a second section of the collar. [Figure 5A] 5A is a cross-sectional view of the fluid connection assembly taken generally along line 5A-5A of FIG. 1A. [Figure 5B] 5B is a cross-sectional view of the fluid connection assembly taken generally along line 5B-5B of FIG. 1B. [Figure 6A] FIG. 1B is a partial elevational view of the fluid connection assembly shown in FIG. 1A. [Figure 6B] FIG. 1C is a partial elevational view of the fluid connection assembly shown in FIG. 1B. [Figure 7A] 7A is a cross-sectional view of the fluid connection assembly taken generally along line 7A-7A of FIG. 1A. [Figure 7B] 7B is a cross-sectional view of the fluid connection assembly taken generally along line 7B-7B of FIG. 1B. DETAILED DESCRIPTION OF THE INVENTION

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

[0016] Furthermore, it is to be understood that this disclosure is not limited to the particular methods, materials, and modifications described, as such may, 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," "close," "essentially," "neighborhood," "vicinity," etc., and that such terms may be used interchangeably when appearing in the specification and claims. It is to be understood that the term "proximate" is synonymous with words such as "near," "close," "adjacent," "neighboring," "proximate," "adjacent," etc., and that such terms may be used interchangeably when appearing in the specification and claims. The term "approximately" is intended to mean a value within 10 percent of a specified value.

[0019] The use of "or" in this application should be understood to refer to a "non-exclusive" arrangement unless otherwise specified. 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 either A or B, or (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 of the statement "item x is A or B" requires that x is either A or B, and only B. Furthermore, as used herein, "and / or" is intended to refer to 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, 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.

[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, a device 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: a device comprising the first element, a device comprising the second element, a device comprising the third element, a device comprising the first and second elements, a device comprising the first and third elements, a device comprising the first, second, and third elements, or a device comprising the second and third elements. A similar interpretation is intended when the phrase "used in at least one of" is used herein. Furthermore, as used herein, "and / or" is intended to refer to 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 the first element, a device comprising the second element, a device comprising the third element, a device comprising the first element and the second element, a device comprising the first element and the third element, a device comprising the first element, the second element, and the third element, or a device comprising the second element and the 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 piping used in hydraulics and fluid mechanics. It should further be appreciated that the term "tube" can refer to a rigid or flexible conduit of any material suitable for containing and allowing the flow of gases or liquids.

[0022] "Non-rotatably connected" elements means that the elements are connected such that rotation of one of the elements rotates all of the elements, and relative rotation between the elements is not possible. Radial and / or axial movement of non-rotatably connected elements relative to each other is possible, but not required. "Rotably connected" elements means that the elements can rotate relative to each other.

[0023] Turning now to the drawings, FIG. 1A is a perspective view of fluid connection assembly 10 in a locked state. FIG. 1B is a perspective view of fluid connection assembly 10 in an unlocked state. FIG. 2 is an exploded perspective view of fluid connection assembly 10. FIG. 3 is a perspective view of first section 110 of collar 100. FIG. 4 is a perspective view of second section 140 of collar 110. FIG. 5A is a cross-sectional view of fluid connection assembly 10 taken generally along line 5A-5A in FIG. 1A. FIG. 5B is a cross-sectional view of fluid connection assembly 10 taken generally along line 5B-5B in FIG. 1B. FIG. 6A is a partial elevation view of fluid connection assembly 10 in a locked state. FIG. 6B is a partial elevation view of fluid connection assembly 10 in an unlocked state. FIG. 7A is a cross-sectional view of fluid connection assembly 10 taken generally along line 7A-7A in FIG. 1A. FIG. 7B is a cross-sectional view of fluid connection assembly 10 taken generally along line 7B-7B in FIG. 1B. The fluid connection assembly 10 generally comprises a connector body 40, a tube 80, and a collar 100. The following description should be read in conjunction with Figures 1A-7B.

[0024] Tube 80 includes end 82, section 83, 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 includes radially outwardly facing surface 84. Radially outwardly facing surface 84 includes a substantially constant diameter. In some embodiments, radially outwardly facing surface 84 includes a frustoconical or curved taper proximal to end 82 (see FIGS. 3A and 3B). In some embodiments, section 83 further includes a raised section disposed between radially outwardly facing surface 84 and shoulder 87. Shoulder 87 is disposed between section 83 and section 89 and includes radially outwardly facing surface 86 and radially outwardly facing surface 88. As shown, radially outwardly facing surface 86 is a frustoconical surface extending from radially outwardly facing surface 84 to surface 88. Radially outward surface 86 increases in diameter toward axial direction AD2. In some embodiments, radially outward surface 86 is an axial surface that faces at least partially toward axial direction AD1. In some embodiments, tube 80 comprises a radially outward surface of constant diameter disposed between radially outward surface 86 and radially outward surface 88. Radially outward surface 88 is a frustoconical surface extending from radially outward surface 86 to radially outward surface 90. Radially outward surface 88 increases in diameter toward axial direction AD1. In some embodiments, radially outward surface 88 is an axial surface that faces at least partially toward axial direction AD2. Section 89 is disposed between shoulder 87 and end 92 and comprises radially outward surface 90. Radially outward surface 90 comprises a substantially constant diameter. In some embodiments, section 89 further comprises a raised section disposed between radially outward surface 88 and radially outward surface 90. In some embodiments, radially outward surface 86 is disposed at an angle α relative to the central axis of tube 80, and radially outward surface 88 is disposed at an angle β relative to the central axis of tube 80, where angle α is equal to angle β (see FIGS. 5A-B).

[0025] Tube 80 is configured to be inserted end 82 first into connector body 40, specifically through-bore 41. Tube 80 is inserted axially into connector body 40 AD1 until shoulder 87 axially passes balls or detents 64A (i.e., shoulder 87, specifically radially outwardly facing surface 86, is located to the right of balls 64A-B as shown in FIGS. 5A-B). It is engagement of balls 64A-B with radially outwardly facing surface 88 that secures tube 80 within connector body 40. It should be understood that tube 80 may be any conventional tube comprising a bead, a radially outwardly extending protrusion or flange, or a ramp profile that extends radially outward and axially on the outer surface of the tube to displace and engage balls 64A-B of collar 20 and secure the tube within the connector body. In some embodiments, tube 80 comprises a metal. In some embodiments, tube 80 comprises a non-metal (e.g., a polymer, rubber, ceramic, etc.).

[0026] The connector body 40 includes a through-bore 41 extending from end 42 to end 44, a radially inward surface 46, a radially inward surface 48, a groove 50, a radially outward surface 52, a groove 54, a head 58, and a radially outward surface 60. The connector body 40 is configured to be connected to a fluid-filled or fluid-flowing component. For example, the connector body 40 can be connected to a refrigeration compressor or transmission via the radially outward surface 60, which can include external threads. The connector body 40 is 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, but it should be appreciated that the head 58 can include any geometric shape suitable for applying torque to the connector body 40. Another component to which the fluid connector 10, and specifically the connector body 40, can be attached is a condenser, evaporator, or pump. It should be appreciated that the fluid connector 10 can be used with a variety of other components, assemblies, and subassemblies where a fluid connection is desired. The radially outward facing surface 60 can further include 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. A seal 62 is disposed within the connector body 40. Specifically, the seal 62 is disposed within the groove 50 to engage with the tube 80 (i.e., the radially outward facing surface 84). The groove 50 is disposed on the radially inward facing surface 48. In some embodiments, the seal 62 is an O-ring.

[0027] In some embodiments, as shown, radially inward surface 46 is a substantially cylindrical surface. In some embodiments, radially inward surface 46 is a frustoconical surface or comprises a tapered proximal end 44 extending radially outward. In some embodiments, radially inward surface 48 is a substantially cylindrical surface. Surface 47 connects surfaces 46 and 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 engage shoulder 87 and, specifically, to prevent axial displacement of tube 80 relative to connector body 40 in axial direction AD1.

[0028] In some embodiments, seal 20 is disposed within throughbore 41 of connector body 40. Seal 20 includes end 22, end 24, radially inwardly facing surface 26, and radially outwardly facing surface 28. End 22 is configured to sealingly engage and / or abut surface 47, radially outwardly facing surface 28 is configured to sealingly engage or abut radially inwardly facing surface 46, and radially inwardly facing surface 26 is configured to sealingly engage or abut radially outwardly facing surface 86. In some embodiments, radially inwardly facing surface 26 is frustoconical and increases in diameter in axial direction AD2. Seal 20 is configured to provide an additional fluid seal (i.e., in addition to seal 62) between tube 80 and connector body 40.

[0029] Groove 54 is disposed on radially outward surface 52. Groove 54 is axially disposed between end 44 and head 58. In some embodiments, grooves 54 are axially spaced apart between end 44 and head 58. Retaining ring 66 is configured to engage groove 54 to rotatably connect collar 20 and connector body 40. When fully engaged with groove 54, retaining ring 66 is rotatably connected to connector body 40 and prevents axial displacement of collar 20 relative to connector body 40 in axial direction AD2.

[0030] Connector body 40 further includes one or more openings (e.g., openings 55A and 55B) disposed in radially outward surface 52. Specifically, openings 55A and 55B are axially disposed between groove 54 and head 58 and extend from radially outward surface 52 to through-hole 41. Openings 55A and 55B are configured to allow balls 64A and 64B to extend therethrough and engage shoulder 87 to secure tube 80 within connector body 40. In some embodiments, openings 55A-B are generally conical or frusto-conical (i.e., decrease in diameter radially inward in radial direction RD1). Such a design allows balls 64A-B to extend only partially into through-hole 41, thereby preventing balls 64A-B from falling into through-hole 41. Therefore, the radially innermost diameter of the openings 55A-B is smaller than the diameter of the balls 64A-B, preventing displacement of the balls 64A-B in the radial direction RD1.

[0031] In some embodiments, connector body 40 further includes one or more protrusions 57 extending from head 58 in axial direction AD2 and extending radially outward from radially outward surface 52 in radial direction RD2. Protrusions 57 may be integrally formed with connector body 40 or may be fixedly attached to connector body 40 and are configured to non-rotatably connect first section 110 to connector body 40. Specifically, protrusions 57 are configured to be engageable with notches 122 in first section 110. In some embodiments, connector body 40 comprises a metal. In some embodiments, connector body 40 comprises a polymer. In some embodiments, connector body 40 comprises a ceramic.

[0032] The collar or locking collar 100 is configured to be connectable to the connector body 40. The collar 100 generally comprises a first section 110, a second section 140, and a spring element 160.

[0033] First section 110 includes end 112, end 114, radially inward surface 116, and radially outward surface 118. First section 110 is configured to be non-rotatably connectable to connector body 40. In some embodiments, and as best shown in FIGS. 1A-2 , end 112 includes one or more notches 122 that engage protrusion 57 to non-rotatably connect first section 110 to connector body 40. It should be appreciated that any suitable means, such as bolts, rivets, screws, nails, dowels, adhesives, welding, soldering, etc., can be used to non-rotatably connect first section 110 to connector body 40. End 112 is configured to engage or be adjacent to head 58. End 114 is configured to engage second section 140 and includes channel 120. Channel 120 is radially disposed between radially inward surface 116 and radially outward surface 118 and extends in an axial direction AD1 from end 114. Channel 120 is configured to at least partially accommodate and / or engage spring element or torsion spring 160. In some embodiments, channel 120 further comprises gap 132 (see FIG. 3 ).

[0034] First section 110 further includes an arm 126 extending radially outward from radially outward surface 118 in a radial direction RD2 and in a circumferential direction CD1 relative to radially outward surface 118. In some embodiments, arm 126 is axially aligned with end 114. Arm 126 is resiliently deformable and configured to be displaceable approximately in the radial directions RD1 and RD2 relative to radially outward surface 118. Arm 126 includes a protrusion 128 at its distal end extending radially inward therefrom in the radial direction RD1 and the axial direction AD2. Protrusion 128 is configured to engage recesses 152 and 153 and align with through-hole 154 to engage ball 64A to maintain an unlocked state and provide an auto-locking function, as described in more detail below.

[0035] First section 110 further includes a loop 130 extending radially outward from radially outward surface 118 in radial direction RD2. Loop 130 is configured to engage latch 156 to non-rotatably connect second section 140 and first section 110, as described in more detail below. In some embodiments, radially outward surface 118 further includes recess 124. In the unlocked state, arm 126 is in an undeformed state, and protrusion 128 engages recess 124 (and recess 152), as best shown in FIGS. 1B and 6B. In the locked state, arm 126 resiliently deforms radially outward, and protrusion 128 engages recess 153 (i.e., protrusion 128 no longer engages recesses 124 and 152), as best shown in FIGS. 1A, 6A, and 7A.

[0036] Second section 140 includes end 142, end 144, radially inward surface 146, and radially outward surface 148. Second section 140 is configured to be rotatably connectable to connector body 40. End 142 is configured to engage and / or abut against end 144. End 142 includes gap 158 (see FIG. 4 ). End 146 is configured to engage and / or abut against retaining ring 66.

[0037] The radially inwardly facing surface 146 includes one or more pockets, e.g., pockets 150A and 150B, configured to be engageable with the balls 64A-B, respectively. The pockets 150A-B extend radially outward from the radially inwardly facing surface 146 in a radial direction RD2. As best shown in FIGS. 7A-B, the pockets 150A-B increase in depth in a circumferential direction CD1. At their deepest portions, the pockets 150A-B allow the balls 64A-B to displace radially outward in the radial direction RD2 and disengage from the shoulder 87, thereby enabling removal of the tube 80 from the connector body 40 (i.e., an unlocked state). At their shallowest portions, the pockets 150A-B allow the balls 64A-B to be forced radially inward in the radial direction RD1 and engage the shoulder 87, thereby preventing removal of the tube 80 from the connector body 40 (i.e., a locked state). The depth of pockets 150A-B gradually decreases, allowing fluid connection assembly 10 to be changed from the unlocked position shown in Figures 1B, 5B, 6B, and 7B to the locked position shown in Figures 1A, 5A, 6A, and 7A. By displacing or rotating second section 140 in a circumferential direction CD2 relative to first section 110, fluid connection assembly 10 can be changed from the locked position shown in Figures 1A, 5A, 6A, and 7A to the unlocked position shown in Figures 1B, 5B, 6B, and 7B. In some embodiments, in the locked state, balls 64A-B engage radially inward surfaces 146.

[0038] Radially outward surface 148 further includes a recess 152 extending radially inward therefrom. In the unlocked state, protrusion 128 engages recess 152 to maintain fluid connection assembly 10 in the unlocked state. Specifically, engagement of protrusion 128 prevents second section 140 from rotating in the circumferential direction CD2 relative to first section 110 due to the torsional bias of spring element 160.

[0039] The recess 152 may further include a through-hole 154 extending from the radially outward surface 148 to the radially inward surface 146. The recess 152 and the through-hole 154 are aligned with the pocket 150A. In the unlocked state, as best shown in FIG. 7B , the recess 152 and the through-hole 154 are at least partially aligned with the opening 55A and the ball 64A. When the tube 80 is inserted into the through-hole 41, the shoulder 87 engages the ball 64A, displacing the ball 64A radially outward in the radial direction RD2. The ball 64A engages the protrusion 128, forcing the protrusion 128 radially outward in the radial direction RD2 and disengaging from the recess 152, at which point the spring element 160 urges the second section in the circumferential direction CD2, placing it in the position shown in FIG. 7A . This is the self-locking feature of the fluid connection assembly 10.

[0040] In some embodiments, the radially outward surface 148 includes knurling, small ridges or beads, or grooves thereon to aid in gripping. In some embodiments, the radially outward surface 148 has a constant diameter. In some embodiments, the radially outward surface 148 has a variable diameter.

[0041] The second section 140 further includes a latch 156 connected to the end 142. The latch 156 is configured to engage with the loop 130 to non-rotatably connect the second section 140 and the first section 110. The latch 156 includes a first radially inner portion including a tongue extending radially outward. The first radially inner portion is configured to pass through the loop 130. The latch 156 also includes a second radially outer portion that radially covers the first radially inner portion. Therefore, due to the arrangement of the second radially outer portion, it is impossible to reach the first radially inner portion and remove the tongue from the loop. This is a tamper-resistant function. To remove the tongue of the first radially inner portion from the loop, the second radially outer portion must be plastically deformed. This is a tamper-detection function.

[0042] Spring element 160 is generally cylindrical and includes end 162 and end 164. In some embodiments, spring element 160 resides entirely within channel 120, except for end 164, which extends from end 114 in axial direction AD2. End 162 engages gap 134, non-rotatably connecting end 162 to first section 110. End 164 engages gap 158, non-rotatably connecting end 164 to second section 140. Spring element 160 is configured to engage first section 110 and second section 140 and bias fluid connection assembly 10 toward the locked state. FIGS. 2 and 6A best illustrate spring element 160 in the locked state. As shown, in the locked state, spring element 160 is in a relaxed state, and end 164 is circumferentially spaced apart from end 164. 6B best illustrates spring element 160 in an unlocked state. As shown, in the unlocked state, spring element 160 is in a tensioned state with ends 162 and 164 compressed (i.e., positioned adjacent to or at least partially aligned with one another). Thus, in the unlocked state, spring element 160 biases second section 140 in a circumferential direction CD1 relative to first section 110, but such rotation is prevented by the engagement of protrusion 128 with recess 124. Upon insertion of tube 80 into connector body 40, engagement of shoulder 87 with ball 64A (and subsequently protrusion 128) disengages protrusion 128 from recess 124, and second section 140 is displaced in the circumferential direction CD1 relative to first section 110 due to the biasing force of spring element 160. Such rotation also causes latch 156 to engage loop 130, thereby non-rotatably connecting second section 140 and first section 110 and locking tube 80 within the connector body (i.e., as described above, circumferential displacement CD1 of second section 140 relative to first section 110 causes balls 64A-B to be forced radially RD1 into engagement with shoulder 87).It should be appreciated that in some embodiments, when the fluid connection assembly 10 is in an unlocked state, the spring element 160 biases the second section 140 in the circumferential direction CD1 relative to the first section 110, but in a locked state, the spring element 160 does not bias the second section 140 at all relative to the first section 110.

[0043] To assemble the fluid connection assembly 10, the seal 62 is placed in the groove 50. The balls 64A and 64B are placed in the openings 55A and 55B, respectively. The collar 100 is then connected to the connector body 40. The first section 110 is disposed circumferentially around the radially outward surface 52 with the end 112, specifically the notch 122, engaged with the protrusion 57 (or head 58). The first section 110 is then rotatably connected to the connector body 40.

[0044] Next, spring element 160 is positioned within channel 120 with end 162 engaged in gap 132 and end 164 extending from channel 120 and projecting in axial direction AD2 from end 114. Section 140 is then positioned circumferentially around the radially outward surface with end 142 facing end 114. End 164 is engaged in gap 158, and end 142 is positioned proximate to and / or abuts end 114. Next, retaining ring 66 is connected to connector body 40, specifically within groove 54. Thus, collar 100 is prevented from axial displacement in axial direction AD1 by protrusion 57 (or head 58) and in axial direction AD2 by retaining ring 66.

[0045] Next, second section 140 is displaced circumferentially relative to first section 110 (if not already unlocked) to the unlocked state shown in FIG. 1B . For example, second section 140 is displaced circumferentially CD2 relative to first section 110 until protrusion 128 engages recess 152, thereby preloading spring element 160. As previously described, engagement between protrusion 128 and recess 152 maintains the fluid connection assembly in the unlocked position (i.e., prevents spring element 160 from displacing circumferentially CD1 relative to first section 110). In the unlocked position, the preloaded spring element 160 exerts a tension that biases second section 140 in the circumferential direction CD1 relative to first section 110. Also, in the unlocked position, latch 156 is circumferentially spaced apart from loop 130.

[0046] Once the collar 100 is connected to the connector body 40 in an unlocked state, the tube 80 can be inserted therein. As best shown in FIGS. 5B and 6B, in the unlocked state, the balls 64A and 64B can be displaced radially outward in the radial direction RD2 into the depths of the pockets 150A and 150B, respectively. The tube 80 is inserted end 82 first in the axial direction AD1 into the through-hole 41. The radially outward facing surface 86 of the shoulder 87 engages and displaces the balls 64A-B in the radial direction RD2 until the shoulder 87 axially displaces the balls 64A-B and the radially outward facing surface 86 is positioned adjacent to and / or abuts the radially inward facing surface 26 (or surface 47). As previously described, the engagement of the shoulder 87 with the ball 64A pushes the protrusion 128 radially outward, disengaging it from the recess 152. Spring element 160 then automatically displaces second section 140 in the circumferential direction CD1 relative to first section 110 such that latch 156 engages loop 130, thereby non-rotatably connecting sections 110 and 140. Rotation of second section 140 also displaces balls 64A-B (by virtue of pockets 150A-B and / or radially inward surface 146) in the radial direction RD1 to engage shoulder 87, specifically radially outward surface 88. Because balls 64A-B cannot be displaced in the radial direction RD2 relative to connector body 40 and second section 140 cannot be displaced in the circumferential direction CD2 relative to first section 110, tube 80 is locked to connector body 40.

[0047] To unlock the fluid connection assembly 10, the radially outer portion of the latch 56 must plastically deform to reach the radially inner portion of the latch 56. The radially inner portion of the latch 56 is then displaced radially inward to disengage its tang from the loop 30, at which point the second section 140 can be displaced in the circumferential direction CD2 relative to the first section 110. The balls 64A-B can again be displaced in the radial direction RD2 into the pockets 150A-B, respectively, so that the tube 80 can be removed from the connector body 40.

[0048] It should further be appreciated that the position of protrusion 128 can also provide a visual indicator of the status of fluid connection assembly 10. For example, when protrusion 128 is disposed within or above recess 152, fluid connection assembly 10 is in the unlocked position. When protrusion 128 is not disposed within or above recess 152 (or above recess 153), fluid connection assembly 10 is in the locked position. Recess 152 may be provided with a color (e.g., red) to aid in the visual indication process. For example, when red is visible, fluid connection assembly 10 is in the locked position, and when red is not visible, fluid connection assembly 10 is in the unlocked position.

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

[0050] 10 Fluid Connection Assembly 20 stickers 22 End 24 End 26 Radial inward facing surface 28 Radial outward facing surface 40 Connector body 41 Through hole 42 End 44 End 46 Radial inward facing surface 47 Surface 48 Radial inward facing surface 50 grooves 52 Radial outward facing surface 54 Groove 55A opening 55B opening 56 Groove 58 head 60 Radial outward facing surface 62 stickers 64A Ball or Detent 64B Ball or Detent 66 Retaining ring 80 tubes 82 End Section 83 84 Radial outward facing surface 86 Radial outward facing surface 87 Shoulder 88 sides Section 89 90 Radial outward facing surface 92 End 94 Through holes 100 Locking Collars or Collars Section 110 112 End 114 End 116 Radial inward facing surface 118 Radial outward facing surface 120 Chinnel 122 notch 124 recess 126 Arm 128 Protrusion 130 Loops 132 Gap 140 Section 142 End 144 End 146 Radial inward facing surface 148 Radial outward facing surface 150A Pocket 150B pocket 152 recess 153 Recess 154 Through hole 156 Latch 158 Gap 160 Spring element or torsion spring 162 End 164 End AD1 Axial direction AD2 axial direction CD1 Circumferential direction CD2 Circumferential direction RD1 Radial direction RD2 Radial direction α angle β angle

Claims

1. A connector body, a first end; a second end; and a first through hole; a radially outward surface including at least one opening extending from the radially outward surface to the first through hole; at least one detent disposed in the at least one opening; a connector body including: a collar connected to the connector body, a first section non-rotatably connected to the connector body and including an arm including a protrusion; a second section including a radially inward surface engaging the radially outward surface, at least one pocket extending radially outward from the radially inward surface, and a recess; and a collar including the second section engages with the first section and is rotatable relative to the first section; the protrusion is configured to engage with the recess to maintain the fluid connection assembly in an unlocked state. Fluid connection assembly.

2. In the unlocked state, the at least one detent engages with the at least one pocket; In a locked state, the at least one detent engages the radially inward surface and extends into the first throughbore. The fluid connection assembly of claim 1 .

3. The fluid connection assembly of claim 1 , wherein the at least one pocket increases in depth in a first circumferential direction.

4. The fluid connection assembly of claim 1 , wherein the at least one opening is frustoconical.

5. 2. The fluid connection assembly of claim 1, wherein the second section further comprises a second through hole disposed within the recess, and the at least one detent is configured to engage with the second through hole to displace the protrusion radially outward.

6. 2. The fluid connection assembly of claim 1, further comprising a spring element disposed between the first section and the second section, the spring element configured to bias the fluid connection assembly toward a locked state.

7. the first section further comprising a loop; the second section further comprising a latch configured to engage the loop to non-rotatably connect the second section and the first section; The fluid connection assembly of claim 1 .

8. The latch a radially inner portion configured to engage the loop to non-rotatably connect the second section and the first section; a radially outer portion completely overlapping the radially inner portion; The fluid connection assembly of claim 7 .

9. In the unlocked state, the second section is rotatable relative to the first section; In a locked state, the second section is non-rotatably connected to the first section. The fluid connection assembly of claim 7 .

10. The fluid connection assembly of claim 1 , further comprising a retaining ring disposed within a groove in the connector body and adapted to connect the collar to the connector body.

11. The fluid connection assembly of claim 1 , further comprising a tube including a shoulder, the at least one detent configured to engage the shoulder to secure the tube to the connector body.

12. The shoulder portion is a first frustoconical surface having a first axially increasing diameter; a second frusto-conical surface extending from the first frusto-conical surface and decreasing in diameter in the first axial direction; The fluid connection assembly of claim 11 .

13. A connector body, a first end; a second end; and a first through hole; a radially outward surface including at least one opening extending from the radially outward surface to the first through hole; at least one detent disposed in the at least one opening; a connector body including: a collar connected to the connector body, a first section non-rotatably connected to the connector body and including a loop; A second section, a radially inward surface engaging the radially outward surface; at least one pocket extending radially outward from said radially inward surface; a latch including a radially inner portion configured to engage the loop to non-rotatably connect the second section and the first section, and a radially outer portion that completely overlaps the radially inner portion; a second section engaged with the first section and rotatable relative to the first section; and a collar including Fluid connection assembly.

14. In an unlocked state, the at least one detent engages the at least one pocket; In a locked state, the at least one detent engages the radially inward surface and extends into the first throughbore. The fluid connection assembly of claim 13.

15. The fluid connection assembly of claim 13 , wherein the at least one pocket increases in depth in a first circumferential direction.

16. the first section further comprises an arm including a protrusion; the second section further comprises a recess, and the protrusion is configured to engage with the recess to maintain the fluid connection assembly in an unlocked state. The fluid connection assembly of claim 13.

17. 17. The fluid connection assembly of claim 16, wherein the second section further comprises a second through hole disposed within the recess, and the at least one detent is configured to engage with the second through hole to disengage the protrusion from the recess.

18. A fluid connection assembly as described in claim 13, further comprising a spring element disposed between the first section and the second section and configured to bias the fluid connection assembly toward a locked state.

19. A fluid connection assembly as described in claim 1, further comprising a spring element disposed between the first section and the second section and configured to circumferentially bias the second section relative to the first section.

20. A connector body, a first end; a second end; and a first through hole; a radially outward surface including at least one opening extending from the radially outward surface to the first through hole; at least one detent disposed in the at least one opening; a connector body including: a collar removably connectable to the connector body, a first section non-rotatably connected to the connector body; a second section including a radially inwardly facing surface that engages the radially outwardly facing surface and including at least one pocket extending radially outward therefrom, the second section engaging the first section and rotatable relative to the first section; a spring element disposed between the first section and the second section, the spring element configured to circumferentially bias the second section relative to the first section; and a collar including Fluid connection assembly.

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