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WO2021113942A1 - Agencement d'accouplement à mise en prise rapide pour systèmes pneumatiques - Google Patents

Agencement d'accouplement à mise en prise rapide pour systèmes pneumatiques Download PDF

Info

Publication number
WO2021113942A1
WO2021113942A1 PCT/BR2020/050538 BR2020050538W WO2021113942A1 WO 2021113942 A1 WO2021113942 A1 WO 2021113942A1 BR 2020050538 W BR2020050538 W BR 2020050538W WO 2021113942 A1 WO2021113942 A1 WO 2021113942A1
Authority
WO
WIPO (PCT)
Prior art keywords
coupling arrangement
arrangement according
nozzle
connector
tubular
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/BR2020/050538
Other languages
English (en)
Portuguese (pt)
Inventor
Marcio UWAROW
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 Industria e Comercio Ltda
Original Assignee
Parker Hannifin Industria e Comercio Ltda
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
Priority claimed from BR102019026218-4A external-priority patent/BR102019026218B1/pt
Application filed by Parker Hannifin Industria e Comercio Ltda filed Critical Parker Hannifin Industria e Comercio Ltda
Publication of WO2021113942A1 publication Critical patent/WO2021113942A1/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
    • F16L21/00—Joints with sleeve or socket
    • F16L21/08—Joints with sleeve or socket with additional locking means
    • 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
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members

Definitions

  • the present invention refers to a quick coupling arrangement to be applied in pneumatic systems, to provide a very simple, fast and safe assembly, without the use of tools, between any of the extreme nozzles of a tubular connection , which may take the shape of a knee, curve, "T", "Y”, straight nipple or other shape, and a quick-connect end of a connector having an opposite end designed to be mated to a threaded nipple of a connector device. pneumatic system or for receiving and retaining one end of a thermoplastic tube of said system.
  • the coupling arrangement in question can be used to allow a quick and safe assembly of different physical connection arrangements between thermoplastic tube extensions, between one or more thermoplastic tubes and respective devices, such as a valve, an actuator, etc., of a pneumatic system applicable, for example, to air brakes or suspensions in heavy vehicles, such as buses and trucks, or in secondary pneumatic systems, such as those applied to the activation of windows, mirrors, seats, windshield wipers, horns, temperature controls, gearshift, door locking, etc.
  • a pneumatic system applicable, for example, to air brakes or suspensions in heavy vehicles, such as buses and trucks, or in secondary pneumatic systems, such as those applied to the activation of windows, mirrors, seats, windshield wipers, horns, temperature controls, gearshift, door locking, etc.
  • the coupling arrangement in question is particularly useful in installations where fast and safe assembly, disassembly and reassembly of different arrangements is required, in terms of shape and dimension, for connecting pipes and devices through a relatively small number of different patterns of tube connections and quick-connect connectors, allowing the fitter to have a clear indication that each coupling has in fact been completed completely.
  • Various quick-connect connectors are well known in the art featuring one end, designed to allow its quick and secure connection to the (unthreaded) end of a generally thermoplastic tube, and an opposite end designed to be connected, also by quick coupling , to another length of tube or, by means of a thread, to different devices or apparatus associated with a pneumatic system.
  • quick-connect connectors comprise a metallic tubular body with one end generally provided with a thread and with the other end defining an axial housing designed to receive and retain, in its interior and in a watertight manner, the end of a thermoplastic tube , preventing the latter from being displaced out of its secure slot inside the quick-connect connector.
  • This generic concept of quick-connect connector construction can be seen, for example, in documents US 5,487,572, US 5,911,443, US 6,783,161 and BR 10 2016 018135-6 and is applied to provide a quick connection between a thermoplastic tube and a threaded nozzle of a device or apparatus of a pneumatic system.
  • the quick-connect connector is designed to establish a quick connection between a generally thermoplastic tube and a threaded nozzle of a pneumatic system device, for example a valve, a system instrument body or even a connection tubular defined by a knee, a 90° or 45° bend, a "T", a "Y”, a straight nipple or any other form of shunt required by the design of the pneumatic system.
  • a pneumatic system device for example a valve, a system instrument body or even a connection tubular defined by a knee, a 90° or 45° bend, a "T", a "Y”, a straight nipple or any other form of shunt required by the design of the pneumatic system.
  • the different tubular connections are usually formed in metallic alloy, having their nozzles, in number of two or more, provided with threads to receive the threaded ends of the connectors whose quick coupling feature only applies to its connection to the tube to be coupled to said threaded nozzle of the tubular connection or of the pneumatic system device.
  • Quick couplings are not provided between the connectors of one or more tubes and the same tubular connection, as these couplings are carried out by threading, requiring more time-consuming operations and the use of tools for their realization.
  • the present invention aims to provide a quick coupling arrangement for pneumatic systems, presenting low cost construction and simple, fast and safe assembly, without the use of tools, between any of the end nozzles of a tubular connection, shaped like a knee, curve, "T", “Y”, straight nipple or other shape, and a quick-connect end of a connector having an opposite end designed to be coupled to a threaded nozzle of a pneumatic system device or to receive and retain one end of a tube of said system, allowing quick and safe assembly and disassembly operations of a relatively small number of patterns of tubular connections and quick-connect connectors and that the fitter has a clear indication that each coupling has been performed correctly and completely.
  • Each nozzle is axially hollowed by an inner portion, of smaller diameter, followed by an outer portion of larger diameter and provided with radial windows that define each one, an elastic and radially deformable extreme edge of a respective side wall portion whose thickness is internally increasing towards said extreme edge.
  • the connector has a quick-connect end, engageable with a nipple of the tubular connection, and an opposite end, attachable to the end of a tube or a threaded nipple of a device in the pneumatic system.
  • the quick coupler end incorporates, externally, a circumferential shoulder to be axially seated and locked against the end edge of the sidewall portions in the radial windows.
  • the assembly arrangement object of the invention allows different patterns of tubular connection to be economically formed in thermoplastic material, with their nozzles having the same construction designed to receive and retain, in a watertight and secure way, an end of standard quick coupling of a connector whose opposite end can be constructed to receive and retain one end of a generally flexible tube or to be threaded to a receiving nozzle of a pneumatic system device.
  • the proposed solution also allows the assembler to have a clear visual indication that each coupling of a connector in the tubular connection was performed correctly and completely.
  • Figure 1 represents an exploded plan view of a connection in the form of a union nipple, each of its two end nozzles being coupleable to a coupling end connector of a respective connector, one of the connectors having an opposite end provided with a male thread for coupling to a threaded nozzle of a pneumatic system device, while the other connector has its opposite end configured to receive and retain one end of a said tube. system;
  • Figure IA represents a plan view of the tubular connection in the form of a union nipple, shown in Figure 1, but when rotated 90° around its longitudinal axis, to illustrate the typical shape of one of the radial and shaping the adjacent mouthpiece sidewall portion of the tubular connection;
  • Figure 2 represents a diametrical longitudinal sectional view of the tubular connection and the two connectors shown in Figure 1;
  • Figure 2A represents a diametrical longitudinal sectional view of the tubular connection of Figure 2, but when rotated 90° around its longitudinal axis, to illustrate the internal shape of the nozzle of the tubular connection in a region devoid of radial windows ;
  • Figure 3 represents a plan view of the elements of the coupling arrangement of Figure 1, but in an assembled condition
  • Figure 4 represents a diametrical longitudinal sectional view of the tubular connection and connectors, in the assembled condition shown in Figure 3;
  • Figure 5 represents an isometric perspective view of the tubular connection of the previous figures, with its two ends coupled to the quick coupling ends of respective connectors whose opposite ends are configured to each receive and retain one end of a tube;
  • Figure 6 represents an isometric perspective view of a tubular connection in the shape of a "T", with two ends coupled to the quick-connect ends of respective connectors whose opposite ends are configured to each receive and retain a end of a tube and with a third end of the tubular connection coupled to the quick-connect end of a respective connector whose opposite end is provided with a male thread for coupling to a threaded nozzle of a device of the pneumatic system;
  • Figure 7 represents an isometric perspective view of a tubular connection in the form of a 90° knee, with one end coupled to a quick-connect end of a connector whose opposite end is configured to receive and retain one end of a tube and with the other end of the tubular connection in a 90° knee coupled to the quick coupling end of a respective connector, the opposite end of which is provided with a male thread for coupling to a threaded nozzle of a device of the pneumatic system;
  • Figure 8 represents an isometric perspective view of a tubular connection in the form of a 45° knee, with the ends coupled to a quick-connect end of a respective connector whose opposite end is configured to receive and retain an end of a tube.
  • the coupling arrangement in question comprises a tubular connection 10, preferably formed in thermoplastic material and which can take different shapes such as, for example, those illustrated in the attached drawings and represented by union nipples, bends or bends of 90° or 45° and "T" or "Y” connections, with said tubular connections 10 having two or more nozzles 11 which are maintained in fluid communication with each other inside the body C of the connection 10 and which have the same construction for each group of tubular connections 10 within the same dimensional pattern.
  • each nozzle 11 of a tubular connection 10 is internally and axially hollowed by an inner portion 11a, of smaller diameter, followed by an outer portion 11b, of larger diameter generally constant along its length, the outer portion 11b being provided with radial windows 12, open outwards, spaced apart according to the same circumferential alignment and each defining a circumferential extension of extreme edge 13a, elastic and radially deformable outwards, of a respective side wall portion 13 and having an internally increasing thickness, from said external portion 11b to the extreme edge 13a.
  • each connector 20 generally constructed of metallic alloy, is internally and axially hollow, having a quick-connect end 21, to be connected to a nozzle 11 of the tubular connection 10, and a opposite end 22, to be connected to one end of a tube T or to an internally threaded nozzle B of a device D which may take the form, for example, of a valve of the pneumatic system.
  • the solution proposed by the invention provides a circumferential shoulder 27 incorporated around the quick-connect end 21 and to be axially seated and locked against the extreme edge 13a of the sidewall portions 13, inside the radial windows 12, whereupon it remains visible through the latter, from the outside of the tubular connection.
  • the quick coupling end 21 is externally defined: by an end portion 21a and a first middle portion 21b, to be respectively fitted to the inner portion 11a and a region of the outer portion 11b of a mouthpiece 11, provided with windows 12; a second, frusto-conical, middle portion 21c to be fitted within the sidewall portions 13; and an inner portion 21d to be fitted to a region of the outer portion 11b of the nozzle 11 axially external to the wall portions 13, the first middle portion 21b of the snap-in end 21 incorporating the circumferential shoulder 27.
  • the circumferential shoulder 27 has a peripheral edge 27a that 'may have a contrasting color with that of the outside of the nozzle 11 and visible through the radial windows 12, when coupling the connector 20 to the tubular connection 10, allowing the assembler to have a clear visual indication that the quick-connect end 21 of the connector 20 has been correctly and completely coupled to a respective socket 11 of the tubular connection 10.
  • the peripheral edge 27a of the circumferential shoulder 27 has an outer diameter greater than the inner diameter of the end edge 13a of the side wall portions 13 is smaller than the diameter of the outer portion 11b of the nozzle 11 of the tubular connection 10, whereby during engagement of the connector 20 in the nozzle 11, the circumferential shoulder 27 deforms, elastic and radially outwardly, the side wall portions 13, allowing the circumferential shoulder 27 to pass over the end edge 13a of the side wall portions 13, to be aligned and partially engaged with the radial windows 12 and seated against said end edges 13a.
  • the peripheral edge 27a of the circumferential shoulder 27 has a frusto-conical shape, with the larger base facing to the extreme edge 13a of the side wall portions 13 and with the smaller base having a larger diameter than that of the inner portion 11a of the mouth 11 of the tubular connection 10.
  • each radial window 12 has opposite open ends to respective axial slots 14 of the outer portion 11b of the nozzle 11 and defining respective opposite side edges 13b of the respective side wall portion 13.
  • the end portion 21a of the quick-connect end 21 of the connector 20 is medially provided with a circumferential channel 23 inside which an elastic sealing ring 30 to be housed is housed. radially compressed against the inner portion 11a of the nozzle 11 when engaging the quick-connect end 21 inside the nozzle 11.
  • the extreme portion 21a of the quick-connect end 21 has an end edge 24 peripherally bevelled.
  • each nozzle 11 of the tubular connection 10 ends in an annular peripheral edge 15 of the nozzle 11, with the second medial portion 21c, frusto-conical, of the engagement end 21 of each connector 20, has its largest base coinciding with a base portion 21d, of cylindrical configuration and ending in a peripheral step 25 of connector 20, with base portion 21d being seated within the region of the outer portion 11b of the nozzle 11, axially external to the side wall portions 13 and the peripheral step 25 of the connector 20 being axially seated against the annular peripheral edge 15 of the nozzle 11, when aligning the circumferential shoulder 27 of the connector 20 with the radial windows 12 of the nozzle 11.
  • the tubular connection 10 of the present invention is preferably formed in a single piece of thermoplastic material, presented in any configuration in union nipple, knee or curve of 90° and 45°, "T” connection, "Y” connection, showing at least one dimensional pattern for your mouthpieces 11.
  • the connector 20 can have its opposite end 22 constructed in two different ways and have different formats, such as that illustrated in straight nipple, or in 90° or 45° knees, facilitating the mounting in hard to reach places.
  • said opposite end 22 of connector 20, axially aligned or not with quick-connect end 21, takes the form of a male nozzle 40, provided with an external thread 41 to allow the connector 20 can be coupled to an internally threaded nozzle B of a device D, such as a valve, of a pneumatic system not shown.
  • said opposite end 22 of connector 20, also axially aligned or not with quick-connect end 21, takes the form of a female-nozzle 50 to allow quick-connection of one end of a T-tube, generally flexible, of the pneumatic system.
  • the construction of the female mouthpiece 50, for quick coupling of a T-tube can have different constructions, for example, the one described in patent application BR 102016 0181356 of the same applicant.
  • the female mouthpiece 50 has an internal housing 51, axially open outwards and towards the quick coupling end 21 of the connector 20 and which has an annular bottom 52 facing outwards and which is provided with an axial recess 53, cylindrical, and having a diameter intermediate the value of the outer and inner diameters of a T-tube, usually thermoplastic, and larger than the inner diameter of the male nozzle 40.
  • the T-tube has an end extension snugly mounted around a tubular reinforcement 60 which has an end head 61 protruding out of the T-tube and which is interference fit within the axial recess 53, wherein the tubular reinforcement 60 is preferably extended along the entire length of the female nozzle 50, to maintain said positioning of the tube T to the region where it protrudes out of the female nozzle 50.
  • the recess axial shaft 53 has a longitudinal extension corresponding to that of the end head 61 of the tubular reinforcement 60.
  • the axial housing 51 is provided with a first step 54 adjacent and coaxial to the axial recess 53 and sized to allow an end portion of the tube T to be snugly and radially seated therein. that involving an extension of the tubular reinforcement 60 that remains radially snugly anchored on said first step 54, collaborating in the stabilization of the tube T inside the female mouthpiece 50.
  • the axial housing 51 is further provided with a second step 55 adjacent and coaxial to the first step 54 and having a diameter greater than that of the latter for a value smaller than the generally circular cross section of a sealing ring 70 , preferably of elastomer and which is radially seated, with interference, against the second step 55.
  • the axial housing 51 is provided with a third step 56, adjacent and coaxial to the second step 55, and having a diameter greater than that of the second tier 55 by an amount less than the radial thickness of a backing ring 80 formed from engineering polymer and which is radially seated on the third tier 56 and held in contact with the sealing ring 70, to retain axially the latter on the first step 54.
  • the quick coupling connector in question is further provided with a locking ring 90 provided with internal teeth 91 and having a peripheral flange 92 axially held against the support ring 50.
  • a tubular bushing 100 is provided, formed of engineering polymer and axially retained within the female mouthpiece 50.
  • peripheral flange 92 of the lock ring 90 is radially seated on the third step 56 of the axial housing 51, being further axially seated against the support ring 80, by actuation of the tubular bushing 100 against the peripheral flange 92 of the lock ring 90.
  • the peripheral flange 92 is sandwiched between the support ring 80 and the tubular bushing 100, ensuring a solid retention of the locking ring 90 inside the axial housing 51.
  • tubular bushing 100 is radially seated on the third step 56 to be axially held seated against the peripheral flange 92 of the locking ring 90.
  • the third step 56 is provided with at least one circumferential recess 56a, and the tubular bushing 100 incorporates at least one external peripheral shoulder 101, to be fitted and axially retained inside of a respective circumferential recess 56a of the third step 56.
  • the female mouthpiece 50 further comprises a tubular button 110, formed from engineering polymer and mounted inside the tubular bushing 100, to be selectively moved from an inoperative position to an operative position, in which the internal teeth 91 are removed from the locking ring 90 of the outer surface of the T-tube inserted into the axial housing 51.
  • a tubular button 110 formed from engineering polymer and mounted inside the tubular bushing 100, to be selectively moved from an inoperative position to an operative position, in which the internal teeth 91 are removed from the locking ring 90 of the outer surface of the T-tube inserted into the axial housing 51.
  • the construction of the female mouthpiece 50 can be replaced by different constructions known in the art and capable of allowing the T-tube to be uncoupled and re-coupled to the female mouthpiece, without prejudice in terms of axial retention and sealing of the coupling.

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

Abstract

Cet agencement comprend un raccord tubulaire (10) pourvu d'embouts (11) auxquels des pièces de raccordement (20) peuvent être accouplées. Chaque embout (11) est axialement évidé par une partie intérieure (11a) et une partie extérieure (11b) présentant des fenêtres radiales (12) qui définissent, chacune, un bord terminal (13a), déformable, d'une partie respective de paroi latérale (13) dont l'épaisseur est intérieurement croissante en direction du bord terminal (13a). La pièce de raccordement (20) présente une extrémité de mise en prise rapide (21), emboîtable sur un embout (11) du raccord tubulaire (10), et une extrémité opposée (22) qui peut être raccordée à un tube (T) ou à un ebout fileté (B) d'un dispositif (D) du système pneumatique. L'extrémité de mise en prise rapide (21) comporte une saillie circonférentielle (27) à mettre en appui axial avec blocage contre le bord terminal (13a) des parties de paroi latérale (13), au niveau des fenêtres radiales (12).
PCT/BR2020/050538 2019-12-11 2020-12-11 Agencement d'accouplement à mise en prise rapide pour systèmes pneumatiques Ceased WO2021113942A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BRBR1020190262184 2019-12-11
BR102019026218-4A BR102019026218B1 (pt) 2019-12-11 Arranjo de acoplamento de engate rápido para sistemas pneumáticos

Publications (1)

Publication Number Publication Date
WO2021113942A1 true WO2021113942A1 (fr) 2021-06-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/BR2020/050538 Ceased WO2021113942A1 (fr) 2019-12-11 2020-12-11 Agencement d'accouplement à mise en prise rapide pour systèmes pneumatiques

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WO (1) WO2021113942A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5204499A (en) * 1991-05-03 1993-04-20 Hubbell Incorporated Snap-in connector with integral spring
US6824172B1 (en) * 2003-10-14 2004-11-30 Naris Komolrochanaporn Push-pull pipe coupling
US20040262920A1 (en) * 2001-10-30 2004-12-30 Philippe Le Quere Coupler
US20150345683A1 (en) * 2014-05-30 2015-12-03 Quick Fitting, Inc. Push-to-Connect Fitting Integrated Packing Arrangement, Device and Methods
US20160327196A1 (en) * 2013-12-19 2016-11-10 Reliance Worldwide Corporation (Aust.) Pty. Ltd. Pipe connection fitting
BR102016018135A2 (pt) * 2016-08-04 2018-03-06 Parker Hannifin Indústria E Comércio Ltda Conector de engate rápido para tubos termoplásticos

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5204499A (en) * 1991-05-03 1993-04-20 Hubbell Incorporated Snap-in connector with integral spring
US20040262920A1 (en) * 2001-10-30 2004-12-30 Philippe Le Quere Coupler
US6824172B1 (en) * 2003-10-14 2004-11-30 Naris Komolrochanaporn Push-pull pipe coupling
US20160327196A1 (en) * 2013-12-19 2016-11-10 Reliance Worldwide Corporation (Aust.) Pty. Ltd. Pipe connection fitting
US20150345683A1 (en) * 2014-05-30 2015-12-03 Quick Fitting, Inc. Push-to-Connect Fitting Integrated Packing Arrangement, Device and Methods
BR102016018135A2 (pt) * 2016-08-04 2018-03-06 Parker Hannifin Indústria E Comércio Ltda Conector de engate rápido para tubos termoplásticos

Also Published As

Publication number Publication date
BR102019026218A2 (pt) 2021-06-22

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