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WO2013012847A1 - Calotte d'étanchéité - Google Patents

Calotte d'étanchéité Download PDF

Info

Publication number
WO2013012847A1
WO2013012847A1 PCT/US2012/047031 US2012047031W WO2013012847A1 WO 2013012847 A1 WO2013012847 A1 WO 2013012847A1 US 2012047031 W US2012047031 W US 2012047031W WO 2013012847 A1 WO2013012847 A1 WO 2013012847A1
Authority
WO
WIPO (PCT)
Prior art keywords
locking
sealing cap
set forth
sealing
clip
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2012/047031
Other languages
English (en)
Inventor
Michael GOSE
Timothy MARQUIS
Paul Lemay
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Parker Hannifin Corp
Original Assignee
Parker Hannifin Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Parker Hannifin Corp filed Critical Parker Hannifin Corp
Publication of WO2013012847A1 publication Critical patent/WO2013012847A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/10—Means for stopping flow in pipes or hoses
    • F16L55/115—Caps
    • F16L55/1157—Caps using hooks, pawls, or other movable or insertable locking members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L2201/00—Special arrangements for pipe couplings
    • F16L2201/80—Dust covers

Definitions

  • This invention relates to sealing caps for use with coupling members. More specifically, this invention relates to a sealing cap for minimizing exposure of a fluid coupling member to dirt and other contaminants when the coupling member is in an uncoupled condition. Further, the invention provides redundancy to prevent fluid escape from the coupling.
  • Couplings are used in numerous applications to connect and disconnect components of a system.
  • fluid couplings are used to connect and disconnect components in a fluid system.
  • Fluid couplings may include a first coupling member that is attached to a first fluid component in the system and a second coupling member that is attached to a second fluid component of the system.
  • the first and second coupling members of the fluid coupling may be connected to establish a fluid connection between the first and second fluid components and may be disconnected to terminate the fluid connection.
  • the present invention provides a sealing cap for a coupling member.
  • the sealing cap is easily assembled on the coupling member with a single direction axial movement and prevents exposure of the coupling member to dirt and other contaminants while preventing the escape of fluids from the coupling member.
  • the sealing cap may include a body and a resilient locking clip.
  • the body may be generally cylindrical with a longitudinal axis, an opened end and a closed end. At least one locking opening may extend radially through the body intermediate the opened end and the closed end.
  • the locking clip may include a locking portion that extends into the locking opening for locking the body on the coupling member.
  • the generally cylindrical body may include a smaller diameter sealing portion and a larger diameter portion, and the locking opening may be located on the larger diameter portion.
  • the larger diameter portion with the locking opening may be located at the opened end of the body.
  • the larger diameter portion of the body may further include another locking opening, which may also extend radially through the larger diameter body portion.
  • the locking clip may further include another locking portion that extends into the other locking opening.
  • the locking openings and the locking portions of the locking clip may be substantially identical in shape to permit various orientations for assembly.
  • the locking portion of the locking clip may extend generally tangentially relative to the body, and the locking clip may include a gripping portion located outside the locking opening and externally of the body. Further, the locking clip may be generally U-shaped, with the locking portions located on the legs of the U-shape and the gripping portion located on the foot of the U-shape.
  • the coupling member may have a longitudinally extending axis, a generally cylindrical nose sealing portion, and a generally cylindrical locking portion having a larger diameter than that of the nose portion.
  • One or more circumferential seals may be carried on the nose portion, and a locking groove may be located on the larger diameter locking portion.
  • the body of the sealing cap may have a generally cylindrical interior surface that engages the outer diameter of the seal with sealing contact.
  • the locking openings may be radially aligned with the locking groove, and the locking clip may be movable relative to the body between one position and another position .
  • the locking portions of the locking clip may extend generally tangentially relative to the locking groove and radially into the locking groove when the locking clip is in the first position, and the locking clip may extend generally tangentially relative to the locking groove and be spaced from the locking groove when the locking clip is in the second position.
  • Figure 1 is a perspective view of a sealing cap and coupling member assembly according to a preferred embodiment of the present invention
  • Figure 2 is a top view of the sealing cap and coupling member assembly shown in Figure 1 ;
  • Figure 3 is a side view of the sealing cap and coupling member assembly shown in Figure 1 ;
  • Figure 4 is an end view of the sealing cap and coupling member assembly shown in Figure 1 ;
  • Figure 5 is cross sectional view taken along reference view line 5 - 5 in Figure 4;
  • Figure 6 is a view of the locking clip used in the sealing cap and coupling member assembly shown in Figure 1 , with the locking clip in a free configuration;
  • Figure 7 is a view of the locking clip used in the sealing cap and coupling member assembly shown in Figure 1 , with the locking clip in an installed deflected configuration.
  • FIGS 1 through 5 illustrate a presently preferred embodiment of a coupling member and sealing cap assembly 10.
  • the assembly 10 includes a coupling member 1 1 and a sealing cap 12.
  • the coupling member 1 1 is one of the two mating coupling members more fully disclosed in the co-pending patent application No. 13/550,936 titled “Coupling” filed on the filing date of the present patent application and assigned to the same assignee as the present patent application. That co-pending patent application is further identified as United States Patent Provisional Application Serial No. 61/508,744, and the disclosure of that co-pending patent application and that provisional application are incorporated herein by reference in their entireties.
  • the coupling member 1 1 is attached to a component (not shown) of a system (not shown) and is used to connect and disconnect that component from other components (not shown) of the system.
  • the coupling member 1 1 in the preferred embodiment is a fluid coupling that may be attached on its right side as viewed in the drawings to a fluid component.
  • the coupling member 1 1 may be used to connect and disconnect its attached fluid component to and from another fluid component of a fluid system.
  • the right side of coupling member 1 1 is attached to a canister that generates a gas, such as ammonia, that is dispensed into a fossil fuel diesel engine exhaust system.
  • the coupling member 1 1 includes a hollow, generally cylindrical metal body 20, preferably formed of a ferrous material such as American Society for Testing and Materials (ASTM) 303 stainless steel material.
  • the body 20 has a longitudinal axis 21 .
  • the exterior of the body 20 includes an externally threaded end portion 22, a wrench flat gripping portion 23, a nominal diameter generally cylindrical coupling sealing portion 24, and a ramp portion 25.
  • the externally threaded end portion 22 is threadably connected to a mating threaded portion (not shown) of a fluid system component (not shown), such as for example the ammonia gas canister described above.
  • the coupling sealing portion 24 is received within the above described mating coupling member (not shown) when the coupling member 1 1 is connected to the mating coupling member, to establish a fluid connection between the fluid component to which the coupling member 1 1 is attached and the fluid component to which the mating coupling member is attached.
  • a spring loaded internal valve ( Figure 5) closes the interior of the coupling member 1 1 when the coupling member 1 1 is disconnected from the mating coupling member.
  • the ramp 25 connects the sealing portion 24 to an annular locking clip groove 28.
  • the outside diameter of the outermost edges of the locking clip groove 28 is significantly greater than the outside diameter of the O- rings 26 and 27, as further described below.
  • the sealing cap 12 is coaxial with the longitudinal axis 21 of the coupling member 1 1 and is carried on the sealing portion 24 of the coupling member 1 1 when the coupling member 1 1 is disconnected from its mating coupling member.
  • the sealing cap 12 includes a hollow generally cylindrical sealing cap body 30 and a sealing cap locking clip 40.
  • the body 30 is preferably injection molded and is preferably of a polymeric material, such as for example a polypropylene material that has sufficient strength at elevated temperatures in the range of 100 degrees centigrade to avoid breaking or cracking at elevated positive pressure differentials between its interior and its exterior in the range of 5 bar.
  • the body 30 includes a cylindrical portion 31 , which has a smooth cylindrical interior surface 32 and a concentric cylindrical exterior surface 33.
  • the cylindrical interior surface 32 is open at its right end as viewed in the drawings and is closed at its left end by a generally flat round disc shaped end wall 34.
  • the end wall 34 is disposed in a plane that is generally perpendicular to the axis 21 , and the end wall 34 extends radially outwardly beyond the exterior surface 33.
  • the cylindrical portion 31 includes a nominal diameter cap body sealing portion 31 a that extends from the end wall 34, an enlarged diameter open ended locking portion 31 b, and a connecting ramp portion 31 c.
  • the body 30 further includes radially opposite locking openings 35 and 36, each of which extends completely through the larger diameter body locking portion 31 b from the exterior surface 33 to the interior surface 32.
  • the locking openings 35 and 36 are preferably identical to one another.
  • the locking openings 35 and 36 are each formed as a straight line cut that starts in a straight line tangent to the exterior surface 33 and that moves radially inwardly toward the axis 21 .
  • each of the locking openings 35 and 36 as viewed in the axial direction is in the shape of an arc or semi-circle, and each of the locking openings 35 and 36 extends circumferentially about the cylindrical interior and exterior surfaces 32 and 33 through an arc of less than about 90 degrees and greater than about 30 degrees and preferably about 45 degrees.
  • the axial width of each locking opening 35 and 36 is slightly greater than the diameter of the locking clip 40.
  • the locking openings 35 and 36 may be formed during molding of the sealing cap 12 or may be cut in the cylindrical portion of the body 30 after molding.
  • the longitudinal edges 37 of the locking opening 35 (one of which is seen in Figure 3) and the longitudinal edges 38 of the locking opening 36 (one of which is seen in Figure 3) cooperate with the locking clip 40 as further described below.
  • the free or unrestrained or uninstalled configuration of the locking clip 40 is illustrated in Figure 6, and the deflected or locking installed configuration of the locking clip 40 (that is, the configuration of the locking clip 40 when it is installed as shown in Figures 1 -5) is illustrated in Figure 7.
  • the locking clip 40 is preferably formed as a one piece construction from a suitable resilient metal wire of geometric cross section, preferably circular, for example ASTM 302 stainless steel spring wire.
  • the locking clip 40 in its deflected or locking installed configuration is elastically deformed from its free or unrestrained or uninstalled configuration and is never plastically deformed during use, so that the locking clip 40 remains firmly in place and locks the locking cap body 30 on the sealing portion 24 of the coupling body 20 during use.
  • the locking clip 40 includes first and second leg or locking portions 41 and 42 and a connecting foot or user interface gripping portion 43.
  • the leg portions 41 and 42 each extend from the foot portion 43 and terminate at a free end, so that the locking clip 40 is of a generally U-shaped configuration.
  • the straight line distance between the leg portions 41 and 42 is slightly less than the inside diameter of the locking clip groove 28.
  • the distance between the leg portions 41 and 42 is slightly less than the straight line distance between edges 37 of the locking opening 34 and the circumferentially opposing edges 38 of the locking opening 36.
  • the straight line distance between the leg or locking portions 41 and 42 is preferably about equal to or slightly greater than the outside diameter of the O-rings 26 and 27.
  • the locking clip 40 is first installed on the body 30 by holding the gripping portion 43 and pushing the open end of the U-shaped locking clip 40 over the exterior surface 33 at the location of the locking openings 35 and 36 as illustrated in Figures 1 -5. After the locking clip 40 is installed on the body 30, the body 30 is then held by the installer at the outer circumference of the end face 34 and pushed longitudinally onto the sealing portion 24 of the coupling 1 1 .
  • the enlarged diameter locking end portion 31 b of the body 30 and the leg portions 41 and 42 of the spring clip 40 move past the outside diameter of the O-rings 26 and 27 without damaging the O-rings 26 and 27.
  • the ramp 25 of the coupling member 1 1 engages and resiliently opens the leg portions 41 and 42 as the body 30 is pushed further onto the coupling member 1 1 .
  • the leg portions 41 and 42 move into radial alignment with the locking clip groove 28, the leg portions 41 and 42 move into the groove 28 with an increased positive feedback force to the installer to indicate complete installation.
  • the O-ring seals 26 and 27 sealingly engage the interior surface 32 to prevent or minimize exposure of the coupling sealing portion 24 and valve mechanism of the coupling member 1 1 to dirt or other contaminants.
  • the legs 41 and 42 of the spring locking clip 40 in this position resiliently deform to the configuration illustrated in Figure 7 and resiliently engage the groove 28 to prevent unintentional removal of the sealing cap 12 and to contain fluid pressure within the interior of the body 30.
  • the legs 41 and 42 in this configuration engage the edges 37 and 38 of the openings 35 and 36.
  • the ramps 25 and 31 c are aligned, so that unsealed air space outside of the seals 26 and 27 between the body 30 and the coupling 1 1 is minimized to minimize exposure of the seal 27 to contaminants.
  • the sealing cap 12 may be pushed onto the coupling member 1 1 with any circumferential orientation of the sealing cap 12 relative to the coupling member 1 1 .
  • the locking clip 40 may be assembled onto the body 30 from either side of the body 30 and without regard to the top or bottom of the locking clip 40.
  • the installed and locked sealing cap 12 minimizes or prevents leakage from inside the sealing cap 12 to the outside (thereby providing redundant sealing for the coupling member 1 1 ) and minimizes or prevents dirt or other contamination outside the sealing cap 12 from contacting the sealing mechanism of the coupling member 1 1 .
  • the locking portions or legs 41 and 42 of the locking clip 40 are displaced from the locked position shown in Figure 7 to a released position in which the legs 41 and 42 are moved radially out of the locking groove 28.
  • the user may push axially in either direction on the gripping portion 43 of the spring locking clip 40 to cam the legs against the edges 37 and 38.
  • the user may pull or push gripping portion 43 of the locking clip 40 radially relative the body 30 so that the ends of the locking portions 41 and 42 engage the edges 37 and 38 to displace the locking portions radially outwardly out of the locking groove 28.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Abstract

L'invention concerne un ensemble élément de couplage et calotte d'étanchéité 10 qui comprend un élément de couplage de fluide 11 et une calotte d'étanchéité 12. L'élément de couplage 11 comprend une partie d'étanchéité de plus petit diamètre 24 qui porte des joints toriques d'étanchéité 26 et 27. Une partie de plus grand diamètre 25, 29 de l'élément de couplage 11 comprend une rainure de verrouillage 28. La calotte d'étanchéité 12 comprend un corps cylindrique 30 qui présente une partie d'étanchéité de plus petit diamètre 31a et une partie de verrouillage de plus grand diamètre 31b. Une attache de verrouillage 40 est reçue dans des ouvertures de verrouillage radialement opposées 35 et 36 sur la partie de verrouillage de diamètre élargi 31b et s'étend dans la rainure de verrouillage 28 dans une position verrouillée.
PCT/US2012/047031 2011-07-18 2012-07-17 Calotte d'étanchéité Ceased WO2013012847A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201161508760P 2011-07-18 2011-07-18
US61/508,760 2011-07-18

Publications (1)

Publication Number Publication Date
WO2013012847A1 true WO2013012847A1 (fr) 2013-01-24

Family

ID=46598978

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2012/047031 Ceased WO2013012847A1 (fr) 2011-07-18 2012-07-17 Calotte d'étanchéité

Country Status (1)

Country Link
WO (1) WO2013012847A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4248262A (en) * 1978-09-07 1981-02-03 Nissan Motor Company, Limited Capping of automatic transmission governor case
USH1272H (en) * 1990-09-28 1994-01-04 The United States Of America As Represented By The Secretary Of The Navy Quick disconnect pressure cap
DE29609435U1 (de) * 1995-06-06 1996-07-11 Joh. Vaillant Gmbh U. Co, 42859 Remscheid Verschluß für ein Entleerungsrohr
EP1065427A1 (fr) * 1999-07-01 2001-01-03 Smc Corporation Raccord de tuyaux
EP1647756A1 (fr) * 2004-10-13 2006-04-19 John Deere Fabriek Horst B.V. Conduite d'une rampe de pulvérisation
DE102006007460A1 (de) * 2005-02-18 2006-10-19 Tokai Rubber Industries, Ltd., Komaki Verbindermontageaufbau
WO2009018985A2 (fr) * 2007-08-06 2009-02-12 Henco Industries N.V. Coiffe de protection pour un raccord à fiche

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4248262A (en) * 1978-09-07 1981-02-03 Nissan Motor Company, Limited Capping of automatic transmission governor case
USH1272H (en) * 1990-09-28 1994-01-04 The United States Of America As Represented By The Secretary Of The Navy Quick disconnect pressure cap
DE29609435U1 (de) * 1995-06-06 1996-07-11 Joh. Vaillant Gmbh U. Co, 42859 Remscheid Verschluß für ein Entleerungsrohr
EP1065427A1 (fr) * 1999-07-01 2001-01-03 Smc Corporation Raccord de tuyaux
EP1647756A1 (fr) * 2004-10-13 2006-04-19 John Deere Fabriek Horst B.V. Conduite d'une rampe de pulvérisation
DE102006007460A1 (de) * 2005-02-18 2006-10-19 Tokai Rubber Industries, Ltd., Komaki Verbindermontageaufbau
WO2009018985A2 (fr) * 2007-08-06 2009-02-12 Henco Industries N.V. Coiffe de protection pour un raccord à fiche

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