WO2022064143A1 - Quick coupling for tubes - Google Patents

Quick coupling for tubes Download PDF

Info

Publication number
WO2022064143A1
WO2022064143A1 PCT/FR2021/051631 FR2021051631W WO2022064143A1 WO 2022064143 A1 WO2022064143 A1 WO 2022064143A1 FR 2021051631 W FR2021051631 W FR 2021051631W WO 2022064143 A1 WO2022064143 A1 WO 2022064143A1
Authority
WO
WIPO (PCT)
Prior art keywords
attachment ring
tubular sleeve
tube
internal housing
hooking
Prior art date
Application number
PCT/FR2021/051631
Other languages
French (fr)
Inventor
Pascal Le Clinche
Original Assignee
Comap
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 Comap filed Critical Comap
Publication of WO2022064143A1 publication Critical patent/WO2022064143A1/en

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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
    • 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
    • F16L37/084—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
    • F16L37/092—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of elements wedged between the pipe and the frusto-conical surface of the body of the connector
    • F16L37/0926—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of elements wedged between the pipe and the frusto-conical surface of the body of the connector with an inner support sleeve arranged within the pipe
    • 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
    • F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
    • F16L33/22—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses with means not mentioned in the preceding groups for gripping the hose between inner and outer parts
    • F16L33/227—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses with means not mentioned in the preceding groups for gripping the hose between inner and outer parts the hose being introduced into or onto the connecting member and automatically locked
    • 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
    • F16L37/084—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
    • F16L37/092—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of elements wedged between the pipe and the frusto-conical surface of the body of the connector
    • F16L37/0927—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of elements wedged between the pipe and the frusto-conical surface of the body of the connector the wedge element being axially displaceable for releasing the coupling

Definitions

  • TITLE One-touch tubing fitting
  • the present invention relates to a push-in fitting for tubes.
  • Such an instant fitting comprises in known manner in particular:
  • a connector body comprising two tubular connection endpieces each intended to be introduced into an end portion of a respective tube, and two tubular sleeve parts which are each arranged around a respective tubular connection endpiece, each part of a tubular sleeve comprising an internal housing configured to extend around the end portion of the respective tube,
  • each attachment ring configured to be received in a respective internal housing and to extend around the end portion of the respective tube, each attachment ring comprising attachment means configured to cooperate with an outer surface of the end portion of the respective tube so as to prevent withdrawal of the end portion of the respective tube from the respective tubular sleeve part,
  • each fixing member being more particularly configured to retain the respective attachment ring in the respective internal housing, so as to prevent the respective attachment ring from withdrawing from the respective internal housing, in particular when traction is exerted on a respective tube,
  • annular spacers each configured to be received in a respective internal housing and to be arranged between the respective annular seal and the respective attachment ring.
  • the present invention aims to remedy these drawbacks.
  • the technical problem at the basis of the invention therefore consists in providing an instant fitting which is of simple and economical structure, while ensuring reliable and easy connection of tubes.
  • the present invention relates to an instant fitting for tubes, comprising:
  • a connector body comprising a tubular sleeve part in which is intended to be received an end portion of a tube, the tubular sleeve part comprising an internal housing configured to extend around the end portion of the tube,
  • the hooking ring configured to be received in the internal housing and to extend around the end portion of the tube, the hooking ring comprising hooking means configured to cooperate with an outer surface of the portion end portion of the tube so as to prevent withdrawal of the end portion of the tube from the part of the tubular sleeve, the hooking means comprising a plurality of hooking lugs which are distributed around the central axis of the attachment ring, each attachment lug being elastically deformable in a radial direction with respect to the central axis of the attachment ring, characterized in that the attachment ring further comprises attachment means configured to be fixed to the tubular sleeve part when the fastening ring is received in the internal housing, so as to prevent the fastening ring from being withdrawn from the internal housing, the fastening means comprising at at least one fixing lug which is elastically deformable in a radial direction with respect to a central axis of the attachment ring, the at least one fixing lug being provided with a fixing member
  • Such a configuration of the instant fitting according to the present invention, and more particularly of the coupling ring, avoids the manufacture of a fixing member separate from the fastening ring, which greatly simplifies the manufacture of the instant fitting according to the present invention. invention and significantly reduces the manufacturing costs of the latter.
  • the instant fitting may also have one or more of the following characteristics, taken alone or in combination.
  • the internal housing is annular. According to one embodiment of the invention, the internal housing has a diameter greater than the external diameter of the end portion of the tube intended to be received in the tubular sleeve part.
  • the internal housing extends from a free end of the tubular sleeve part and up to an annular shoulder provided on an interior surface of the tubular sleeve part.
  • the at least one fixing lug extends substantially parallel to the central axis of the attachment ring.
  • the fixing member is a male fixing member and the fixing element is a female fixing element.
  • the fixing member is a fixing lug oriented radially towards the outside of the attachment ring.
  • the fixing element is a fixing groove or a through fixing slot.
  • the fixing groove is annular.
  • the fixing groove is provided on an inner surface of the tubular sleeve part.
  • the through fixing slot is provided on the tubular sleeve part and opens into the internal housing.
  • the fixing means comprise two fixing lugs which are diametrically opposed with respect to the central axis of the attachment ring.
  • the fixing means are configured to allow movement in axial translation of the attachment ring in the internal housing, when the fixing means are fixed to the part of the tubular sleeve.
  • the at least one fixing lug is separate from the attachment lugs.
  • the at least one fixing lug has an internal profile different from the internal profile of each of the attachment lugs, and an external profile different from the external profile of each of the attachment lugs.
  • the at least one fixing lug is arranged between two adjacent hooking lugs.
  • each hooking lug is provided, on its inner face, with a hooking tooth configured to cooperate with the outer surface of the end portion of the tube.
  • each hooking tooth is arranged close to a free end of the respective hooking lug.
  • each hooking tooth comprises a hooking edge.
  • the attachment lugs extend substantially parallel to the central axis of the attachment ring.
  • the hooking lugs extend from the annular collar.
  • each hooking lug is provided, on its outer face, with a contact surface which is inclined from the inside outwards and towards a free end of said attachment lug, the contact surface provided on each attachment lug being configured to cooperate with the tubular sleeve part, and for example with a deformation edge provided on the tubular sleeve part, when traction is exerted on a tube mounted in the coupling body, so as to elastically deform the respective hooking lug in the direction of the end portion of the tube, and preferably so as to cause the respective hooking tooth to penetrate into a wall of the tube.
  • the deformation edge is defined by the fixing groove or the through fixing slot.
  • the attachment ring is configured such that, when the attachment ring is received in the internal housing, the free ends of the attachment tabs are directed away from a free end, called the insertion end, of the tubular sleeve part.
  • the coupling body comprises an axial stop portion configured to form an axial stop for the tube in the position mounted on the coupling body.
  • the attachment ring comprises an angular indexing element, such as an angular indexing rib, configured to cooperate with the tubular sleeve part, and for example with a groove of angular indexing provided on the tubular sleeve part, so as to define a position for inserting the attachment ring into the internal housing.
  • an angular indexing element such as an angular indexing rib
  • the angular indexing element is provided on an outer surface of the attachment ring.
  • the instant fitting further comprises an annular seal configured to be placed in the internal housing, the attachment ring comprising a spacer portion configured to extend between the annular seal and the attachment means when the attachment ring is received in the internal housing.
  • Such a configuration of the attachment ring avoids the manufacture of a spacer separate from the attachment ring, which further simplifies the manufacture of the instant fitting according to the present invention and further reduces the manufacturing costs of the latter.
  • the spacer part is configured to extend between the annular seal and the free ends of the attachment lugs when the attachment ring is received in the internal housing.
  • the spacer part is configured to protect the annular seal from the attachment means.
  • the annular seal is configured to bear against the annular shoulder forming a bottom wall of the internal housing.
  • the spacer part is annular.
  • the spacer part is configured to bear against the annular seal when the attachment ring is received in the internal housing.
  • the spacer part comprises a front face configured to bear against the annular seal when the attachment ring is received in the internal housing.
  • the attachment ring comprises an axial bearing surface configured to cooperate with an axial abutment surface provided on the part of the tubular sleeve during insertion of the attachment ring in the internal housing, so as to limit the insertion stroke of the attachment ring in the internal housing.
  • the axial bearing surface provided on the attachment ring is annular.
  • the attachment ring comprises an annular flange comprising the axial bearing surface.
  • the annular collar is provided at one end of the attachment ring configured to be located on the side of the free end of the tubular sleeve part when the attachment ring is received in the internal housing.
  • the retaining surface provided on the fixing member extends substantially perpendicular to the central axis of the attachment ring.
  • the axial distance between the axial bearing surface and the retaining surface is greater than the axial distance between the axial abutment surface provided on the tubular sleeve part and the deformation edge , so as to define an axial clearance between the attachment ring and the coupling body.
  • the tubular sleeve part comprises at least one deformation ramp configured to radially deform the at least one fixing lug, for example towards the inside of the attachment ring, during insertion of the attachment ring in the internal housing.
  • the tubular sleeve part comprises at least one guide zone configured to axially guide the at least one fixing lug during insertion of the attachment ring into the internal housing, the at least one deformation ramp being provided at one end of the at least one guide zone.
  • the at least one guide zone is provided on the sleeve part.
  • the attachment ring is configured such that a radial clearance is defined between the contact surface provided on each attachment lug and the deformation edge when the surface of axial support provided on the attachment ring bears against the axial abutment surface provided on the tubular sleeve part.
  • each hooking lug comprises, on its outer face, a contact projection comprising the respective contact surface, the contact projection being configured to extend at least partly into the fixing element provided on the tubular sleeve part when the fixing means are fixed to the tubular sleeve part.
  • the at least one fixing lug is provided, on its inner face, with a support projection configured to bear against an outer surface of the end portion of the tube, so as to lock the at least one fixing lug in a fixing position.
  • the connector body further comprises a tubular connection endpiece intended to be introduced into the end portion of the tube, the tubular sleeve part being arranged around the tubular connection endpiece .
  • the tubular connection end piece is distinct and separate from the tubular sleeve part.
  • the coupling body is one-piece, that is to say made in one piece.
  • the attachment ring is one-piece, that is to say made in one piece.
  • the attachment ring is made of plastic material.
  • the coupling body is made of plastic.
  • the instant fitting is an unremovable instant fitting.
  • Figure 1 is a longitudinal sectional view of a push-in fitting according to a first embodiment of the invention.
  • Figure 2 is a perspective view of a fitting body belonging to the one-touch fitting in Figure 1.
  • Figure 3 is a longitudinal sectional view, in perspective, of the coupling body of Figure 2.
  • Figure 4 is a perspective view of a snap ring belonging to the push-in fitting of figure 1.
  • Figure 5 is a longitudinal sectional view, in perspective, of the attachment ring of Figure 4.
  • Figure 6 is a longitudinal sectional view, in perspective, of the attachment ring of Figure 4.
  • Figure 7 is a perspective view of the instant fitting of Figure 1 to which two tubes are connected.
  • Figure 8 is a longitudinal sectional view of the instant fitting of Figure 1 to which two tubes are connected.
  • Figure 9 is a longitudinal sectional view of the instant fitting of Figure 1 to which two tubes are connected.
  • Figure 10 is a longitudinal sectional view of the instant fitting of Figure 1 to which two tubes are connected.
  • Figure 11 is a longitudinal sectional view of the instant fitting of Figure 1 to which two tubes are connected.
  • Figure 12 is a longitudinal sectional view, in perspective, of a push-in fitting according to a second embodiment of the invention to which two tubes are connected.
  • Figure 13 is a perspective view of a fitting body belonging to the one-touch fitting in figure 12.
  • Figure 14 is a longitudinal sectional view, in perspective, of the connector body of Figure 13.
  • Figure 15 is a perspective view of a snap ring belonging to the push-in fitting of figure 13.
  • Figures 1 to 11 show a first embodiment of an instant fitting 2 for tubes, and more particularly for plastic tubes, for example cross-linked polyethylene.
  • the instant fitting 2 can for example be configured to fluidically connect two tubes belonging to a circuit carrying fluid under pressure.
  • Each tube to be connected to the instant fitting 2 according to the present invention may in particular comprise one or more layers of synthetic material, for example cross-linked polyethylene.
  • Each tube to be connected to the instant fitting 2 can also be a composite tube, that is to say comprising in particular a metal core.
  • the push-in connector 2 comprises a connector body 3 comprising two tubular connection endpieces 4.
  • Each tubular connection endpiece 4 is intended to be housed inside an end portion 5 of a respective tube 6, and has advantageously an external diameter substantially equal to the internal diameter of the respective tube 6.
  • Each tubular connection endpiece 4 has an internal passage 7 allowing the flow of a fluid contained in the respective tube 6.
  • each of the tubular connection endpieces 4 is generally cylindrical.
  • the connector body 3 further comprises two tubular sleeve parts 8 which are each arranged around a respective tubular connector 4.
  • each tubular sleeve part 8 is generally cylindrical, and is coaxial with the respective tubular connection endpiece 4.
  • Each tubular sleeve part 8 comprises an internal housing 9 which is annular and which has a diameter greater than the external diameter of the end portion 5 of the respective tube 6 .
  • Each internal housing 9 is configured to extend around the end portion 5 of the tube 6 respectively.
  • Each internal housing 9 extends from a free end of the respective tubular sleeve part 8 and up to an annular shoulder 10 provided on an inner surface of the respective tubular sleeve part 8.
  • the coupling body 3 further comprises an axial stop part 11 which is disposed axially between the two internal housings 9, and which is configured to form two axial stops for the end portions 5 of the tubes 6 received in the two parts of tubular sleeve 8.
  • the coupling body 3 is one-piece, that is to say made in one piece, and can for example be made of plastic.
  • the instant fitting 2 further comprises two attachment rings 12 each configured to be received in a respective internal housing 9 and to extend around the end portion 5 of the respective tube 6.
  • each attachment ring 12 is monobloc, that is to say made in one piece, and can for example be made of plastic.
  • Each attachment ring 12 has an internal diameter substantially equal to or greater than the external diameter of the end portion 5 of the respective tube 6, and an external diameter substantially equal to or less than the internal diameter of the respective tubular sleeve part 8.
  • Each attachment ring 12 comprises attachment means configured to cooperate with an outer surface of the end portion 5 of the respective tube 6 so as to prevent withdrawal of the end portion 5 of the respective tube 6 from the housing. internal 9 respective.
  • each attachment ring 12 comprise a plurality of attachment lugs 13 which are distributed around the central axis A of the ring of respective attachment 12 and which extend parallel to the central axis A of the respective attachment ring 12.
  • Each attachment lug 13 is elastically deformable in a radial direction with respect to the central axis A of the respective attachment ring 12, and is provided, on its inner face, with an attachment tooth 14 configured to cooperate with the outer surface of the end portion 5 of the respective tube 6.
  • each hooking tooth 14 is arranged close to a free end of the respective hooking lug 13, and has a hooking edge 15.
  • Each attachment ring 12 is more particularly configured such that, when said attachment ring 12 is received in the respective internal housing 9, the free ends of the attachment lugs 13 provided on said attachment ring 12 are directed opposite a free end, called the insertion end, of the respective tubular sleeve part 8.
  • each hooking lug 13 is provided, on its outer face, with a contact projection 16 comprising a contact surface 17 which is inclined from the inside towards the outside and in the direction of a free end of said attachment lug 13.
  • Each contact surface 17 is configured to cooperate with a respective deformation edge 18 provided on the respective tubular sleeve part 8 when traction is exerted on the tube 6 respectively, so as to elastically deform the respective attachment lug 13 in the direction of the end portion 5 of the respective tube 6, in order to cause penetration of the respective attachment tooth 14 in the end portion 5 of the tube 6 respective.
  • each contact projection 16 is formed by a contact lug oriented radially outward from the respective attachment ring 12.
  • each attachment ring 12 further comprises an annular flange 19 comprising an axial bearing surface 21 configured to cooperate with an axial abutment surface 22 provided on the respective tubular sleeve part 8 when an insertion of said attachment ring 12 into the respective internal housing 9, so as to limit the insertion stroke of said attachment ring 12 into the respective internal housing 9.
  • each axial bearing surface 21 extends substantially perpendicular to the central axis A of the respective attachment ring 12.
  • each attachment ring 12 is annular, and the annular flange 19 of each attachment ring 12 is provided at one end of said attachment ring 12 which is configured to be located on the side of the free end of the respective tubular sleeve portion 8 when said attachment ring 12 is received in the respective internal housing 9.
  • each attachment ring 12 is configured such that a radial play is defined between the contact surface 17 provided on each attachment lug 13 and the respective deformation edge 18 when the surface axial support 21 provided on said attachment ring 12 bears against the respective axial abutment surface 22.
  • Each attachment ring 12 further comprises attachment means configured to be attached to the respective tubular sleeve part 8 when said attachment ring 12 is received in the respective internal housing 9, so as to prevent said ring from being withdrawn. hooking 12 out of the internal housing 9 respective.
  • the fixing means provided on each attachment ring 12 comprise two fixing lugs 24 which are diametrically opposite with respect to the central axis A of the respective attachment ring 12 and which extend parallel to the central axis A of the respective attachment ring 12.
  • the attachment lugs 13 and the fixing lugs 24 of each attachment ring 12 extend from the respective annular collar 19.
  • Each fixing lug 24 is elastically deformable in a radial direction with respect to the central axis A of the respective attachment ring 12, and is provided with a male fixing member 25 configured to cooperate, for example by snap-fastening, with a respective female fixing element 26 provided on the respective tubular sleeve part 8.
  • the male fixing member 25 provided on each fixing lug 24 is a fixing lug oriented radially towards the outside of the respective attachment ring 12.
  • Each male fastener 25 more particularly comprises a retaining surface 27 configured to cooperate with the respective female fastener 26, and more particularly with a side wall delimiting the respective female fastener 26, so as to prevent of the respective attachment ring 12 out of the respective internal housing 9.
  • each female fixing element 26 is formed by a through fixing slot which is provided on the respective tubular sleeve part 8 and which opens into the respective internal housing 9.
  • each tubular sleeve part 8 is provided with two through fixing slots which are diametrically opposite with respect to an axis of extension of said tubular sleeve part 8, and each crossing fixing slot defines a deformation edge 18 respectively.
  • each through fixing slot extends circumferentially relative to the axis of extension of the respective tubular sleeve portion 8.
  • the fixing means provided on each attachment ring 12 are configured to allow movement in axial translation of said attachment ring 12 in the respective internal housing 9, when said attachment ring 12 is fixed to the respective tubular sleeve part 8.
  • the axial distance D between the axial bearing surface 21 provided on a fastening ring 12 and the retaining surface 27 provided on each fixing lug 24 of said fastening ring 12 is greater than the axial distance d between the axial abutment surface 22 provided on the respective tubular sleeve part 8 and the respective deformation edge 18, so as to define an axial clearance between said attachment ring 12 and the respective tubular sleeve part 8 allowing the displacement in aforementioned axial translation of said attachment ring 12 in the respective internal housing 9.
  • the contact projection 16, provided on each hooking lug 13, is configured to extend at least partly into the fixing element female 26 provided on the respective tubular sleeve portion 8, when the respective attachment ring 12 is received in the respective internal housing 9.
  • each attachment ring 12 makes it possible, when a tube 6 is inserted into an internal housing 9 provided on a part of the tubular sleeve 8 (see FIG. 8), to allow radial deformation of each lug of hooking 13, provided on the respective hooking ring 12, towards the outside of said hooking ring 12, and therefore to allow the connection of said tube 6 to the coupling body 3.
  • each hooking ring 12 also allows, when traction is exerted on a tube 6 mounted in the coupling body 3 and said tube 6 and the respective attachment ring 12 are moved in translation into the position shown on the left part of Figure 9, to elastically deform each hooking lug 13 in the direction of the end portion 5 of said tube 6 and therefore to cause penetration of each hooking tooth 14 into the end portion 5 of said tube 6.
  • each tubular sleeve part 8 comprises two deformation ramps 28 each configured to radially deform a respective fixing lug 24, for example towards the inside of the respective attachment ring 12, during an insertion of the respective attachment ring 12 in the respective internal housing 9, and this in such a way as to facilitate the latching of the respective fixing lug 24 in the respective female fixing element 26.
  • each part of the tubular sleeve 8 also comprises two guide zones 29 each configured to axially guide a respective fixing lug 24 during the insertion of the respective attachment ring 12 into the respective internal housing 9.
  • Each deformation ramp 28 is advantageously provided at one end of a respective guide zone 29, and each guide zone 29 is configured so as not to radially deform the respective fixing lug 24 during insertion of the attachment ring 12 respectively in the internal housing 9 respective.
  • each fixing lug 24 is advantageously provided, on its inner face, with a support projection 24.1 configured to bear against an outer surface of the end portion 5 of the respective tube 6, so as to lock said fixing lug 24 in a fixing position when the respective tube 6 is received in the respective tubular sleeve part 8.
  • the instant fitting 2 further comprises two annular seals 31 each configured to be placed in a respective internal housing 9, and to provide a seal between the respective tube 6 and the respective tubular sleeve part 8.
  • Each attachment ring 12 advantageously comprises a spacer portion 32 configured to extend between the respective annular seal 31 and the attachment means provided on said attachment ring 12 when said attachment ring 12 is received in the respective internal housing 9.
  • Each spacer portion 32 is annular and is more particularly configured to protect the respective annular seal 31 from the attachment means provided on the respective attachment ring 12.
  • each spacer part 32 can be configured to bear against the respective annular seal 31 when the respective attachment ring 12 is received in the respective internal housing 9 and the axial bearing surface 21 respective bears against the axial abutment surface 22 provided on the respective tubular sleeve portion 8.
  • Such a configuration of each attachment ring 12 makes it possible, when connecting a tube 6 to the respective tubular sleeve part 8, to ensure a slight compression of the respective annular seal 31 by the spacer part 32 respective, and therefore to initiate the attachment of said tube 6.
  • each attachment ring 12 further comprises an angular indexing element 33 (see Figure 4), such as an angular indexing rib provided on an outer surface of said attachment ring 12, configured to cooperate with an angular indexing member, such as an angular indexing groove, provided on the respective tubular sleeve part 8, so as to define an insertion position of each hooking ring 12 in the respective internal housing 9.
  • the angular indexing rib is rectilinear and extends parallel to the central axis A of the respective attachment ring 12.
  • Figures 12 to 15 show a push-in fitting 2 according to a second embodiment of the invention which differs from the first embodiment shown in Figures 1 to 11 essentially in that the female fixing element 26 provided on each part of tubular sleeve 8 is formed by an annular fixing groove which is provided on an inner surface of the respective tubular sleeve part 8, and in that each tubular connection end piece 4 is distinct and separate from the respective tubular sleeve part 8, and is configured to be mounted on the respective tube 6 before the latter is inserted into the respective tubular sleeve part 8
  • each attachment ring 12 has no angular indexing means, and each deformation edge 18 is annular and therefore extends over 360°.
  • each tubular connection endpiece 4 comprises an annular bearing rim 34 configured to bear against the free end of the respective tube 6 and to be interposed between the free end of the respective tube 6 and the axial stop part 11 .

Abstract

This quick coupling (2) comprises a coupling body (3) comprising a tubular sleeve part (8) in which an end portion (5) of a tube (6) is intended to be received, the tubular sleeve part (8) comprising an internal housing (9) configured to extend around the end portion (5) of the tube (6); and a locking ring (12) configured to be received in the internal housing (9) and to extend around the end portion (5) of the tube (6), the locking ring (12) comprising locking portions configured to engage with an outer surface of the end portion (5) of the tube (6) so as to prevent the end portion (5) of the tube (6) from being withdrawn from the tubular sleeve part (8). The locking ring (12) further comprises fastening means configured to be fastened to the tubular sleeve part (8) when the locking ring (12) is received in the internal housing (9), so as to prevent the locking ring (12) from being withdrawn from the internal housing (9).

Description

DESCRIPTION DESCRIPTION
TITRE : Raccord instantané pour tubes TITLE: One-touch tubing fitting
La présente invention concerne un raccord instantané pour tubes. The present invention relates to a push-in fitting for tubes.
Un tel raccord instantané comprend de façon connue notamment : Such an instant fitting comprises in known manner in particular:
- un corps de raccord comprenant deux embouts de raccordement tubulaires destinés chacun à être introduit dans une portion d’extrémité d’un tube respectif, et deux parties de manchon tubulaires qui sont chacune disposées autour d’un embout de raccordement tubulaire respectif, chaque partie de manchon tubulaire comprenant un logement interne configuré pour s’étendre autour de la portion d’extrémité du tube respectif, - a connector body comprising two tubular connection endpieces each intended to be introduced into an end portion of a respective tube, and two tubular sleeve parts which are each arranged around a respective tubular connection endpiece, each part of a tubular sleeve comprising an internal housing configured to extend around the end portion of the respective tube,
- deux bagues d’accrochage configurées chacune pour être reçues dans un logement interne respectif et pour s’étendre autour de la portion d’extrémité du tube respectif, chaque bague d’accrochage comprenant des moyens d’accrochage configurés pour coopérer avec une surface extérieure de la portion d’extrémité du tube respectif de manière à empêcher un retrait de la portion d’extrémité du tube respectif hors de la partie de manchon tubulaire respective, - two attachment rings each configured to be received in a respective internal housing and to extend around the end portion of the respective tube, each attachment ring comprising attachment means configured to cooperate with an outer surface of the end portion of the respective tube so as to prevent withdrawal of the end portion of the respective tube from the respective tubular sleeve part,
- deux organes de fixation configurés chacun pour être reçus dans un logement interne respectif et pour être fixés à une partie de manchon tubulaire respective, chaque organe de fixation étant plus particulièrement configuré pour retenir la bague d’accrochage respective dans le logement interne respectif, de manière à empêcher un retrait de la bague d’accrochage respective hors du logement interne respectif notamment lorsqu’une traction est exercée sur un tube respectif, - two fixing members each configured to be received in a respective internal housing and to be fixed to a respective tubular sleeve part, each fixing member being more particularly configured to retain the respective attachment ring in the respective internal housing, so as to prevent the respective attachment ring from withdrawing from the respective internal housing, in particular when traction is exerted on a respective tube,
- deux joints d’étanchéité annulaires configurés chacun pour être reçus dans un logement interne respectif, et - two annular seals each configured to be received in a respective internal housing, and
- deux entretoises annulaires configurées chacune pour être reçues dans un logement interne respectif et pour être disposées entre le joint d’étanchéité annulaire respectif et la bague d’accrochage respective. - two annular spacers each configured to be received in a respective internal housing and to be arranged between the respective annular seal and the respective attachment ring.
Compte tenu du nombre important de pièces distinctes constituant le raccord instantané précité, la fabrication d’un tel raccord instantané est complexe et onéreuse et le raccordement de tubes à un tel raccord instantané s’avère également complexe et fastidieux. Given the large number of separate parts constituting the aforementioned instant fitting, the manufacture of such an instant fitting is complex and expensive and the connection of tubes to such an instant fitting also proves to be complex and tedious.
La présente invention vise à remédier à ces inconvénients. The present invention aims to remedy these drawbacks.
Le problème technique à la base de l’invention consiste donc à fournir un raccord instantané qui soit de structure simple et économique, tout en assurant un raccordement fiable et aisé de tubes. A cet effet, la présente invention concerne un raccord instantané pour tubes, comprenant : The technical problem at the basis of the invention therefore consists in providing an instant fitting which is of simple and economical structure, while ensuring reliable and easy connection of tubes. To this end, the present invention relates to an instant fitting for tubes, comprising:
- un corps de raccord comprenant une partie de manchon tubulaire dans laquelle est destinée à être reçue une portion d’extrémité d’un tube, la partie de manchon tubulaire comprenant un logement interne configuré pour s’étendre autour de la portion d’extrémité du tube, - a connector body comprising a tubular sleeve part in which is intended to be received an end portion of a tube, the tubular sleeve part comprising an internal housing configured to extend around the end portion of the tube,
- une bague d’accrochage configurée pour être reçue dans le logement interne et pour s’étendre autour de la portion d’extrémité du tube, la bague d’accrochage comprenant des moyens d’accrochage configurés pour coopérer avec une surface extérieure de la portion d’extrémité du tube de manière à empêcher un retrait de la portion d’extrémité du tube hors de la partie de manchon tubulaire, les moyens d’accrochage comportant une pluralité de pattes d’accrochage qui sont réparties autour de l’axe central de la bague d’accrochage, chaque patte d’accrochage étant élastiquement déformable selon une direction radiale par rapport à l’axe central de la bague d’accrochage, caractérisé en ce que la bague d’accrochage comporte en outre des moyens de fixation configurés pour être fixés à la partie de manchon tubulaire lorsque la bague d’accrochage est reçue dans le logement interne, de manière à empêcher un retrait de la bague d’accrochage hors du logement interne, les moyens de fixation comportant au moins une patte de fixation qui est élastiquement déformable selon une direction radiale par rapport à un axe central de la bague d’accrochage, l’au moins une patte de fixation étant pourvue d’un organe de fixation qui est configuré pour coopérer par encliquetage avec un élément de fixation prévu sur la partie de manchon tubulaire et qui est pourvu d’une surface de retenue configurée pour coopérer avec la partie de manchon tubulaire de manière à empêcher un retrait de la bague d’accrochage hors du logement interne. - a hooking ring configured to be received in the internal housing and to extend around the end portion of the tube, the hooking ring comprising hooking means configured to cooperate with an outer surface of the portion end portion of the tube so as to prevent withdrawal of the end portion of the tube from the part of the tubular sleeve, the hooking means comprising a plurality of hooking lugs which are distributed around the central axis of the attachment ring, each attachment lug being elastically deformable in a radial direction with respect to the central axis of the attachment ring, characterized in that the attachment ring further comprises attachment means configured to be fixed to the tubular sleeve part when the fastening ring is received in the internal housing, so as to prevent the fastening ring from being withdrawn from the internal housing, the fastening means comprising at at least one fixing lug which is elastically deformable in a radial direction with respect to a central axis of the attachment ring, the at least one fixing lug being provided with a fixing member which is configured to cooperate by snap-fastening with a fixing element provided on the tubular sleeve part and which is provided with a retaining surface configured to cooperate with the tubular sleeve part so as to prevent withdrawal of the snap ring from the internal housing.
Une telle configuration du raccord instantané selon la présente invention, et plus particulièrement de la bague d’accrochage, évite la fabrication d’un organe de fixation distinct de la bague d’accrochage, ce qui simplifie grandement la fabrication du raccord instantané selon la présente invention et réduit sensiblement les coûts de fabrication de ce dernier. Such a configuration of the instant fitting according to the present invention, and more particularly of the coupling ring, avoids the manufacture of a fixing member separate from the fastening ring, which greatly simplifies the manufacture of the instant fitting according to the present invention. invention and significantly reduces the manufacturing costs of the latter.
De plus, le fait de réaliser les moyens de fixation directement sur la bague d’accrochage, et non pas sur une pièce distincte de cette dernière, permet de simplifier le raccordement de tubes au raccord instantané selon la présente invention. In addition, the fact of making the fixing means directly on the attachment ring, and not on a separate part of the latter, makes it possible to simplify the connection of tubes to the instant fitting according to the present invention.
Le raccord instantané peut en outre présenter une ou plusieurs des caractéristiques suivantes, prises seules ou en combinaison. The instant fitting may also have one or more of the following characteristics, taken alone or in combination.
Selon un mode de réalisation de l’invention, le logement interne est annulaire. Selon un mode de réalisation de l’invention, le logement interne présente un diamètre supérieur au diamètre externe de la portion d’extrémité du tube destiné à être reçu dans la partie de manchon tubulaire. According to one embodiment of the invention, the internal housing is annular. According to one embodiment of the invention, the internal housing has a diameter greater than the external diameter of the end portion of the tube intended to be received in the tubular sleeve part.
Selon un mode de réalisation de l’invention, le logement interne s’étend depuis une extrémité libre de la partie de manchon tubulaire et jusqu’à un épaulement annulaire prévu sur une surface intérieure de la partie de manchon tubulaire. According to one embodiment of the invention, the internal housing extends from a free end of the tubular sleeve part and up to an annular shoulder provided on an interior surface of the tubular sleeve part.
Selon un mode de réalisation de l’invention, l’au moins une patte de fixation s’étend sensiblement parallèlement à l’axe central de la bague d’accrochage. According to one embodiment of the invention, the at least one fixing lug extends substantially parallel to the central axis of the attachment ring.
Selon un mode de réalisation de l’invention, l’organe de fixation est un organe de fixation mâle et l’élément de fixation est un élément de fixation femelle. According to one embodiment of the invention, the fixing member is a male fixing member and the fixing element is a female fixing element.
Selon un mode de réalisation de l’invention, l’organe de fixation est un ergot de fixation orienté radialement vers l’extérieur de la bague d’accrochage. According to one embodiment of the invention, the fixing member is a fixing lug oriented radially towards the outside of the attachment ring.
Selon un mode de réalisation de l’invention, l’élément de fixation est une rainure de fixation ou une lumière de fixation traversante. According to one embodiment of the invention, the fixing element is a fixing groove or a through fixing slot.
Selon un mode de réalisation de l’invention, la rainure de fixation est annulaire. De façon avantageuse, la rainure de fixation est prévue sur une surface intérieure de la partie de manchon tubulaire. According to one embodiment of the invention, the fixing groove is annular. Advantageously, the fixing groove is provided on an inner surface of the tubular sleeve part.
Selon un mode de réalisation de l’invention, la lumière de fixation traversante est prévue sur la partie de manchon tubulaire et débouche dans le logement interne. According to one embodiment of the invention, the through fixing slot is provided on the tubular sleeve part and opens into the internal housing.
Selon un mode de réalisation de l’invention, les moyens de fixation comportent deux pattes de fixation qui sont diamétralement opposées par rapport à l’axe central de la bague d’accrochage. According to one embodiment of the invention, the fixing means comprise two fixing lugs which are diametrically opposed with respect to the central axis of the attachment ring.
Selon un mode de réalisation de l’invention, les moyens de fixation sont configurés pour autoriser un déplacement en translation axiale de la bague d’accrochage dans le logement interne, lorsque les moyens de fixation sont fixés à la partie de manchon tubulaire. According to one embodiment of the invention, the fixing means are configured to allow movement in axial translation of the attachment ring in the internal housing, when the fixing means are fixed to the part of the tubular sleeve.
Selon un mode de réalisation de l’invention, l’au moins une patte de fixation est distincte des pattes d’accrochage. According to one embodiment of the invention, the at least one fixing lug is separate from the attachment lugs.
Selon un mode de réalisation de l’invention, l’au moins une patte de fixation présente un profil interne différent du profil interne de chacune des pattes d’accrochage, et un profil externe différent du profil externe de chacune des pattes d’accrochage. According to one embodiment of the invention, the at least one fixing lug has an internal profile different from the internal profile of each of the attachment lugs, and an external profile different from the external profile of each of the attachment lugs.
Selon un mode de réalisation de l’invention, l’au moins une patte de fixation est disposée entre deux pattes d’accrochage adjacentes. According to one embodiment of the invention, the at least one fixing lug is arranged between two adjacent hooking lugs.
Selon un mode de réalisation de l’invention, chaque patte d’accrochage est munie, sur sa face intérieure, d’une dent d’accrochage configurée pour coopérer avec la surface extérieure de la portion d’extrémité du tube. Selon un mode de réalisation de l’invention, chaque dent d’accrochage est disposée à proximité d’une extrémité libre de la patte d’accrochage respective. According to one embodiment of the invention, each hooking lug is provided, on its inner face, with a hooking tooth configured to cooperate with the outer surface of the end portion of the tube. According to one embodiment of the invention, each hooking tooth is arranged close to a free end of the respective hooking lug.
Selon un mode de réalisation de l’invention, chaque dent d’accrochage comporte une arête d’accrochage. According to one embodiment of the invention, each hooking tooth comprises a hooking edge.
Selon un mode de réalisation de l’invention, les pattes d’accrochage s’étendent sensiblement parallèlement à l’axe central de la bague d’accrochage. According to one embodiment of the invention, the attachment lugs extend substantially parallel to the central axis of the attachment ring.
Selon un mode de réalisation de l’invention, les pattes d’accrochage s’étendent à partir de la collerette annulaire. According to one embodiment of the invention, the hooking lugs extend from the annular collar.
Selon un mode de réalisation de l’invention, chaque patte d’accrochage est munie, sur sa face extérieure, d’une surface de contact qui est inclinée de l’intérieur vers l’extérieur et en direction d’une extrémité libre de ladite patte d’accrochage, la surface de contact prévue sur chaque patte d’accrochage étant configurée pour coopérer avec la partie de manchon tubulaire, et par exemple avec une arête de déformation prévue sur la partie de manchon tubulaire, lorsqu’une traction est exercée sur un tube monté dans le corps de raccord, de manière à déformer élastiquement la patte d’accrochage respective en direction de la portion d’extrémité du tube, et de préférence de manière à provoquer une pénétration de la dent d’accrochage respective dans une paroi du tube. According to one embodiment of the invention, each hooking lug is provided, on its outer face, with a contact surface which is inclined from the inside outwards and towards a free end of said attachment lug, the contact surface provided on each attachment lug being configured to cooperate with the tubular sleeve part, and for example with a deformation edge provided on the tubular sleeve part, when traction is exerted on a tube mounted in the coupling body, so as to elastically deform the respective hooking lug in the direction of the end portion of the tube, and preferably so as to cause the respective hooking tooth to penetrate into a wall of the tube.
Selon un mode de réalisation de l’invention, l’arête de déformation est définie par la rainure de fixation ou la lumière de fixation traversante. According to one embodiment of the invention, the deformation edge is defined by the fixing groove or the through fixing slot.
Selon un mode de réalisation de l’invention, la bague d’accrochage est configurée de telle sorte que, lorsque la bague d’accrochage est reçue dans le logement interne, les extrémités libres des pattes d’accrochage sont dirigées à l’opposé d’une extrémité libre, dite extrémité d’introduction, de la partie de manchon tubulaire. According to one embodiment of the invention, the attachment ring is configured such that, when the attachment ring is received in the internal housing, the free ends of the attachment tabs are directed away from a free end, called the insertion end, of the tubular sleeve part.
Selon un mode de réalisation de l’invention, le corps de raccord comporte une partie de butée axiale configurée pour former une butée axiale pour le tube en position montée sur le corps de raccord. According to one embodiment of the invention, the coupling body comprises an axial stop portion configured to form an axial stop for the tube in the position mounted on the coupling body.
Selon un mode de réalisation de l’invention, la bague d’accrochage comporte un élément d’indexation angulaire, tel qu’une nervure d’indexation angulaire, configuré pour coopérer avec la partie de manchon tubulaire, et par exemple avec une rainure d’indexation angulaire prévue sur la partie de manchon tubulaire, de manière à définir une position d’insertion de la bague d’accrochage dans le logement interne. According to one embodiment of the invention, the attachment ring comprises an angular indexing element, such as an angular indexing rib, configured to cooperate with the tubular sleeve part, and for example with a groove of angular indexing provided on the tubular sleeve part, so as to define a position for inserting the attachment ring into the internal housing.
Selon un mode de réalisation de l’invention, l’élément d’indexation angulaire est prévu sur une surface extérieure de la bague d’accrochage. According to one embodiment of the invention, the angular indexing element is provided on an outer surface of the attachment ring.
Selon un mode de réalisation de l’invention, le raccord instantané comprend en outre un joint d’étanchéité annulaire configuré pour être disposé dans le logement interne, la bague d’accrochage comportant une partie d’entretoisement configurée pour s’étendre entre le joint d’étanchéité annulaire et les moyens d’accrochage lorsque la bague d’accrochage est reçue dans le logement interne. According to one embodiment of the invention, the instant fitting further comprises an annular seal configured to be placed in the internal housing, the attachment ring comprising a spacer portion configured to extend between the annular seal and the attachment means when the attachment ring is received in the internal housing.
Une telle configuration de la bague d’accrochage évite la fabrication d’une entretoise distincte de la bague d’accrochage, ce qui simplifie encore la fabrication du raccord instantané selon la présente invention et réduit encore les coûts de fabrication de ce dernier. Such a configuration of the attachment ring avoids the manufacture of a spacer separate from the attachment ring, which further simplifies the manufacture of the instant fitting according to the present invention and further reduces the manufacturing costs of the latter.
De plus, le fait de réaliser la partie d’entretoisement directement sur la bague d’accrochage, et non pas sur une pièce distincte de cette dernière, permet de simplifier encore le raccordement de tubes au raccord instantané selon la présente invention. In addition, the fact of making the spacer part directly on the attachment ring, and not on a separate part of the latter, makes it possible to further simplify the connection of tubes to the instant fitting according to the present invention.
Selon un mode de réalisation de l’invention, la partie d’entretoisement est configurée pour s’étendre entre le joint d’étanchéité annulaire et les extrémités libres des pattes d’accrochage lorsque la bague d’accrochage est reçue dans le logement interne. According to one embodiment of the invention, the spacer part is configured to extend between the annular seal and the free ends of the attachment lugs when the attachment ring is received in the internal housing.
De façon avantageuse, la partie d’entretoisement est configurée pour protéger le joint d’étanchéité annulaire des moyens d’accrochage. Advantageously, the spacer part is configured to protect the annular seal from the attachment means.
Selon un mode de réalisation de l’invention, le joint d’étanchéité annulaire est configuré pour prendre appui contre l’épaulement annulaire formant une paroi de fond du logement interne. According to one embodiment of the invention, the annular seal is configured to bear against the annular shoulder forming a bottom wall of the internal housing.
Selon un mode de réalisation de l’invention, la partie d’entretoisement est annulaire. According to one embodiment of the invention, the spacer part is annular.
Selon un mode de réalisation de l’invention, la partie d’entretoisement est configurée pour prendre appui contre le joint d’étanchéité annulaire lorsque la bague d’accrochage est reçue dans le logement interne. De façon avantageuse, la partie d’entretoisement comporte une face frontale configurée pour prendre appui contre le joint d’étanchéité annulaire lorsque la bague d’accrochage est reçue dans le logement interne. According to one embodiment of the invention, the spacer part is configured to bear against the annular seal when the attachment ring is received in the internal housing. Advantageously, the spacer part comprises a front face configured to bear against the annular seal when the attachment ring is received in the internal housing.
Selon un mode de réalisation de l’invention, la bague d’accrochage comporte une surface d’appui axiale configurée pour coopérer avec une surface de butée axiale prévue sur la partie de manchon tubulaire lors d’une insertion de la bague d’accrochage dans le logement interne, de manière à limiter la course d’insertion de la bague d’accrochage dans le logement interne. According to one embodiment of the invention, the attachment ring comprises an axial bearing surface configured to cooperate with an axial abutment surface provided on the part of the tubular sleeve during insertion of the attachment ring in the internal housing, so as to limit the insertion stroke of the attachment ring in the internal housing.
De façon avantageuse, la surface d’appui axiale prévue sur la bague d’accrochage est annulaire. Advantageously, the axial bearing surface provided on the attachment ring is annular.
Selon un mode de réalisation de l’invention, la bague d’accrochage comporte une collerette annulaire comportant la surface d’appui axiale. De façon avantageuse, la collerette annulaire est prévue à une extrémité de la bague d’accrochage configurée pour être située du côté de l’extrémité libre de la partie de manchon tubulaire lorsque la bague d’accrochage est reçue dans le logement interne. Selon un mode de réalisation de l’invention, la surface de retenue prévue sur l’organe de fixation s’étend sensiblement perpendiculairement à l’axe central de la bague d’accrochage. According to one embodiment of the invention, the attachment ring comprises an annular flange comprising the axial bearing surface. Advantageously, the annular collar is provided at one end of the attachment ring configured to be located on the side of the free end of the tubular sleeve part when the attachment ring is received in the internal housing. According to one embodiment of the invention, the retaining surface provided on the fixing member extends substantially perpendicular to the central axis of the attachment ring.
Selon un mode de réalisation de l’invention, la distance axiale entre la surface d’appui axiale et la surface de retenue est supérieure à la distance axiale entre la surface de butée axiale prévue sur la partie de manchon tubulaire et l’arête de déformation, de manière à définir un jeu axial entre la bague d’accrochage et le corps de raccord. According to one embodiment of the invention, the axial distance between the axial bearing surface and the retaining surface is greater than the axial distance between the axial abutment surface provided on the tubular sleeve part and the deformation edge , so as to define an axial clearance between the attachment ring and the coupling body.
Selon un mode de réalisation de l’invention, la partie de manchon tubulaire comporte au moins une rampe de déformation configurée pour déformer radialement l’au moins une patte de fixation, par exemple vers l’intérieur de la bague d’accrochage, lors d’une insertion de la bague d’accrochage dans le logement interne. According to one embodiment of the invention, the tubular sleeve part comprises at least one deformation ramp configured to radially deform the at least one fixing lug, for example towards the inside of the attachment ring, during insertion of the attachment ring in the internal housing.
Selon un mode de réalisation de l’invention, la partie de manchon tubulaire comporte au moins une zone de guidage configurée pour guider axialement l’au moins une patte de fixation lors de l’insertion de la bague d’accrochage dans le logement interne, l’au moins une rampe de déformation étant prévue à une extrémité de l’au moins une zone de guidage. Une telle configuration de la bague d’accrochage assure une déformation radiale de la patte d’accrochage uniquement sur une faible distance axiale. According to one embodiment of the invention, the tubular sleeve part comprises at least one guide zone configured to axially guide the at least one fixing lug during insertion of the attachment ring into the internal housing, the at least one deformation ramp being provided at one end of the at least one guide zone. Such a configuration of the attachment ring ensures radial deformation of the attachment lug only over a small axial distance.
Selon un mode de réalisation de l’invention, l’au moins une zone de guidage est prévue sur la partie de manchon. According to one embodiment of the invention, the at least one guide zone is provided on the sleeve part.
Selon un mode de réalisation de l’invention, la bague d’accrochage est configurée de telle sorte qu’un jeu radial est défini entre la surface de contact prévue sur chaque patte d’accrochage et l’arête de déformation lorsque la surface d’appui axiale prévue sur la bague d’accrochage prend appui contre la surface de butée axiale prévue sur la partie de manchon tubulaire. According to one embodiment of the invention, the attachment ring is configured such that a radial clearance is defined between the contact surface provided on each attachment lug and the deformation edge when the surface of axial support provided on the attachment ring bears against the axial abutment surface provided on the tubular sleeve part.
Selon un mode de réalisation de l’invention, chaque patte d’accrochage comporte, sur sa face extérieure, une saillie de contact comprenant la surface de contact respective, la saillie de contact étant configurée pour s’étendre au moins en partie dans l’élément de fixation prévu sur la partie de manchon tubulaire lorsque les moyens de fixation sont fixés à la partie de manchon tubulaire. According to one embodiment of the invention, each hooking lug comprises, on its outer face, a contact projection comprising the respective contact surface, the contact projection being configured to extend at least partly into the fixing element provided on the tubular sleeve part when the fixing means are fixed to the tubular sleeve part.
Selon un mode de réalisation de l’invention, l’au moins une patte de fixation est munie, sur sa face intérieure, d’une saillie d’appui configurée pour prendre appui contre une surface extérieure de la portion d’extrémité du tube, de manière à verrouiller l’au moins une patte de fixation dans une position de fixation. According to one embodiment of the invention, the at least one fixing lug is provided, on its inner face, with a support projection configured to bear against an outer surface of the end portion of the tube, so as to lock the at least one fixing lug in a fixing position.
Selon un mode de réalisation de l’invention, le corps de raccord comporte en outre un embout de raccordement tubulaire destiné à être introduit dans la portion d’extrémité du tube, la partie de manchon tubulaire étant disposée autour de l’embout de raccordement tubulaire. Selon un mode de réalisation de l’invention, l’embout de raccordement tubulaire est distinct et séparé de la partie de manchon tubulaire. According to one embodiment of the invention, the connector body further comprises a tubular connection endpiece intended to be introduced into the end portion of the tube, the tubular sleeve part being arranged around the tubular connection endpiece . According to one embodiment of the invention, the tubular connection end piece is distinct and separate from the tubular sleeve part.
Selon un mode de réalisation de l’invention, le corps de raccord est monobloc, c’est-à-dire réalisé en une seule pièce. According to one embodiment of the invention, the coupling body is one-piece, that is to say made in one piece.
Selon un mode de réalisation de l’invention, la bague d’accrochage est monobloc, c’est-à-dire réalisée en une seule pièce. According to one embodiment of the invention, the attachment ring is one-piece, that is to say made in one piece.
Selon un mode de réalisation de l’invention, la bague d’accrochage est en matière plastique. According to one embodiment of the invention, the attachment ring is made of plastic material.
Selon un mode de réalisation de l’invention, le corps de raccord est en matière plastique. According to one embodiment of the invention, the coupling body is made of plastic.
Selon un mode de réalisation de l’invention, le raccord instantané est un raccord instantané indémontable. According to one embodiment of the invention, the instant fitting is an unremovable instant fitting.
La présente invention sera bien comprise à l’aide de la description qui suit en référence aux figures annexées, dans lesquelles des signes de références identiques correspondent à des éléments structurellement et/ou fonctionnellement identiques ou similaires. The present invention will be better understood using the following description with reference to the appended figures, in which identical reference signs correspond to structurally and/or functionally identical or similar elements.
Figure 1 est une vue en coupe longitudinale d’un raccord instantané selon un premier mode de réalisation de l’invention. Figure 1 is a longitudinal sectional view of a push-in fitting according to a first embodiment of the invention.
Figure 2 est une vue en perspective d’un corps de raccord appartenant au raccord instantané de la figure 1 . Figure 2 is a perspective view of a fitting body belonging to the one-touch fitting in Figure 1.
Figure 3 est une vue en coupe longitudinale, en perspective, du corps de raccord de la figure 2. Figure 3 is a longitudinal sectional view, in perspective, of the coupling body of Figure 2.
Figure 4 est une vue en perspective d’une bague d’accrochage appartenant au raccord instantané de la figure 1. Figure 4 is a perspective view of a snap ring belonging to the push-in fitting of figure 1.
Figure 5 est une vue en coupe longitudinale, en perspective de la bague d’accrochage de la figure 4. Figure 5 is a longitudinal sectional view, in perspective, of the attachment ring of Figure 4.
Figure 6 est une vue en coupe longitudinale, en perspective de la bague d’accrochage de la figure 4. Figure 6 is a longitudinal sectional view, in perspective, of the attachment ring of Figure 4.
Figure 7 est une vue en perspective du raccord instantané de la figure 1 auquel sont raccordés deux tubes. Figure 7 is a perspective view of the instant fitting of Figure 1 to which two tubes are connected.
Figure 8 est une vue en coupe longitudinale du raccord instantané de la figure 1 auquel sont raccordés deux tubes. Figure 8 is a longitudinal sectional view of the instant fitting of Figure 1 to which two tubes are connected.
Figure 9 est une vue en coupe longitudinale du raccord instantané de la figure 1 auquel sont raccordés deux tubes. Figure 9 is a longitudinal sectional view of the instant fitting of Figure 1 to which two tubes are connected.
Figure 10 est une vue en coupe longitudinale du raccord instantané de la figure 1 auquel sont raccordés deux tubes. Figure 11 est une vue en coupe longitudinale du raccord instantané de la figure 1 auquel sont raccordés deux tubes. Figure 10 is a longitudinal sectional view of the instant fitting of Figure 1 to which two tubes are connected. Figure 11 is a longitudinal sectional view of the instant fitting of Figure 1 to which two tubes are connected.
Figure 12 est une vue en coupe longitudinale, en perspective, d’un raccord instantané selon un deuxième mode de réalisation de l’invention auquel sont raccordés deux tubes. Figure 12 is a longitudinal sectional view, in perspective, of a push-in fitting according to a second embodiment of the invention to which two tubes are connected.
Figure 13 est une vue en perspective d’un corps de raccord appartenant au raccord instantané de la figure 12. Figure 13 is a perspective view of a fitting body belonging to the one-touch fitting in figure 12.
Figure 14 est une vue en coupe longitudinale, en perspective, du corps de raccord de la figure 13. Figure 14 is a longitudinal sectional view, in perspective, of the connector body of Figure 13.
Figure 15 est une vue en perspective d’une bague d’accrochage appartenant au raccord instantané de la figure 13. Figure 15 is a perspective view of a snap ring belonging to the push-in fitting of figure 13.
Les figures 1 à 11 représentent un premier mode de réalisation d’un raccord instantané 2 pour tubes, et plus particulièrement pour tubes en matière plastique, par exemple en polyéthylène réticulé. Le raccord instantané 2 peut par exemple être configuré pour raccorder fluidiquement deux tubes appartenant à un circuit conducteur de fluide sous pression. Chaque tube à raccorder au raccord instantané 2 selon la présente invention peut notamment comporter une ou plusieurs couches de matière synthétique, par exemple de polyéthylène réticulé. Chaque tube à raccorder au raccord instantané 2 peut également être un tube composite, c’est-à-dire comprenant notamment une âme métallique. Figures 1 to 11 show a first embodiment of an instant fitting 2 for tubes, and more particularly for plastic tubes, for example cross-linked polyethylene. The instant fitting 2 can for example be configured to fluidically connect two tubes belonging to a circuit carrying fluid under pressure. Each tube to be connected to the instant fitting 2 according to the present invention may in particular comprise one or more layers of synthetic material, for example cross-linked polyethylene. Each tube to be connected to the instant fitting 2 can also be a composite tube, that is to say comprising in particular a metal core.
Le raccord instantané 2 comporte un corps de raccord 3 comportant deux embouts de raccordement tubulaires 4. Chaque embout de raccordement tubulaire 4 est destiné à être logé à l’intérieur d’une portion d’extrémité 5 d’un tube 6 respectif, et présente avantageusement un diamètre externe sensiblement égal au diamètre interne du tube 6 respectif. Chaque embout de raccordement tubulaire 4 comporte un passage interne 7 permettant l’écoulement d’un fluide contenu dans le tube 6 respectif. De façon avantageuse, chacun des embouts de raccordement tubulaires 4 est globalement cylindrique. The push-in connector 2 comprises a connector body 3 comprising two tubular connection endpieces 4. Each tubular connection endpiece 4 is intended to be housed inside an end portion 5 of a respective tube 6, and has advantageously an external diameter substantially equal to the internal diameter of the respective tube 6. Each tubular connection endpiece 4 has an internal passage 7 allowing the flow of a fluid contained in the respective tube 6. Advantageously, each of the tubular connection endpieces 4 is generally cylindrical.
Le corps de raccord 3 comporte en outre deux parties de manchon tubulaires 8 qui sont chacune disposées autour d’un embout de raccordement tubulaire 4 respectif. De façon avantageuse, chaque partie de manchon tubulaire 8 est globalement cylindrique, et est coaxiale à l’embout de raccordement tubulaire 4 respectif. The connector body 3 further comprises two tubular sleeve parts 8 which are each arranged around a respective tubular connector 4. Advantageously, each tubular sleeve part 8 is generally cylindrical, and is coaxial with the respective tubular connection endpiece 4.
Chaque partie de manchon tubulaire 8 comprend un logement interne 9 qui est annulaire et qui présente un diamètre supérieur au diamètre externe de la portion d’extrémité 5 du tube 6 respectif. Chaque logement interne 9 est configuré pour s’étendre autour de la portion d’extrémité 5 du tube 6 respectif. Chaque logement interne 9 s’étend depuis une extrémité libre de la partie de manchon tubulaire 8 respective et jusqu’à un épaulement annulaire 10 prévu sur une surface intérieure de la partie de manchon tubulaire 8 respective. Le corps de raccord 3 comporte de plus une partie de butée axiale 11 qui est disposée axialement entre les deux logements internes 9, et qui est configurée pour former deux butées axiales pour les portions d’extrémités 5 des tubes 6 reçus dans les deux parties de manchon tubulaires 8. Each tubular sleeve part 8 comprises an internal housing 9 which is annular and which has a diameter greater than the external diameter of the end portion 5 of the respective tube 6 . Each internal housing 9 is configured to extend around the end portion 5 of the tube 6 respectively. Each internal housing 9 extends from a free end of the respective tubular sleeve part 8 and up to an annular shoulder 10 provided on an inner surface of the respective tubular sleeve part 8. The coupling body 3 further comprises an axial stop part 11 which is disposed axially between the two internal housings 9, and which is configured to form two axial stops for the end portions 5 of the tubes 6 received in the two parts of tubular sleeve 8.
Selon le mode de réalisation représenté sur les figures 1 à 11 , le corps de raccord 3 est monobloc, c’est-à-dire réalisé en une seule pièce, et peut par exemple être réalisé en matière plastique. According to the embodiment shown in Figures 1 to 11, the coupling body 3 is one-piece, that is to say made in one piece, and can for example be made of plastic.
Le raccord instantané 2 comporte en outre deux bagues d’accrochage 12 configurées chacune pour être reçues dans un logement interne 9 respectif et pour s’étendre autour de la portion d’extrémité 5 du tube 6 respectif. Selon le mode de réalisation représenté sur les figures 1 à 11 , chaque bague d’accrochage 12 est monobloc, c’est-à-dire réalisée en une seule pièce, et peut par exemple être réalisée en matière plastique. The instant fitting 2 further comprises two attachment rings 12 each configured to be received in a respective internal housing 9 and to extend around the end portion 5 of the respective tube 6. According to the embodiment shown in Figures 1 to 11, each attachment ring 12 is monobloc, that is to say made in one piece, and can for example be made of plastic.
Chaque bague d’accrochage 12 présente un diamètre interne sensiblement égal ou supérieur au diamètre externe de la portion d’extrémité 5 du tube 6 respectif, et un diamètre externe sensiblement égal ou inférieur au diamètre interne de la partie de manchon tubulaire 8 respective. Each attachment ring 12 has an internal diameter substantially equal to or greater than the external diameter of the end portion 5 of the respective tube 6, and an external diameter substantially equal to or less than the internal diameter of the respective tubular sleeve part 8.
Chaque bague d’accrochage 12 comprend des moyens d’accrochage configurés pour coopérer avec une surface extérieure de la portion d’extrémité 5 du tube 6 respectif de manière à empêcher un retrait de la portion d’extrémité 5 du tube 6 respectif hors du logement interne 9 respectif. Each attachment ring 12 comprises attachment means configured to cooperate with an outer surface of the end portion 5 of the respective tube 6 so as to prevent withdrawal of the end portion 5 of the respective tube 6 from the housing. internal 9 respective.
Selon le mode de réalisation représenté sur les figures 1 à 11 , les moyens d’accrochage prévus sur chaque bague d’accrochage 12 comportent une pluralité de pattes d’accrochage 13 qui sont réparties autour de l’axe central A de la bague d’accrochage 12 respective et qui s’étendent parallèlement à l’axe central A de la bague d’accrochage 12 respective. According to the embodiment shown in Figures 1 to 11, the attachment means provided on each attachment ring 12 comprise a plurality of attachment lugs 13 which are distributed around the central axis A of the ring of respective attachment 12 and which extend parallel to the central axis A of the respective attachment ring 12.
Chaque patte d’accrochage 13 est élastiquement déformable selon une direction radiale par rapport à l’axe central A de la bague d’accrochage 12 respective, et est munie, sur sa face intérieure, d’une dent d’accrochage 14 configurée pour coopérer avec la surface extérieure de la portion d’extrémité 5 du tube 6 respectif. De façon avantageuse, chaque dent d’accrochage 14 est disposée à proximité d’une extrémité libre de la patte d’accrochage 13 respective, et comporte une arête d’accrochage 15. Each attachment lug 13 is elastically deformable in a radial direction with respect to the central axis A of the respective attachment ring 12, and is provided, on its inner face, with an attachment tooth 14 configured to cooperate with the outer surface of the end portion 5 of the respective tube 6. Advantageously, each hooking tooth 14 is arranged close to a free end of the respective hooking lug 13, and has a hooking edge 15.
Chaque bague d’accrochage 12 est plus particulièrement configurée de telle sorte que, lorsque ladite bague d’accrochage 12 est reçue dans le logement interne 9 respectif, les extrémités libres des pattes d’accrochage 13 prévues sur ladite bague d’accrochage 12 sont dirigées à l’opposé d’une extrémité libre, dite extrémité d’introduction, de la partie de manchon tubulaire 8 respective. Selon le mode de réalisation représenté sur les figures 1 à 11 , chaque patte d’accrochage 13 est munie, sur sa face extérieure, d’une saillie de contact 16 comprenant une surface de contact 17 qui est inclinée de l’intérieur vers l’extérieur et en direction d’une extrémité libre de ladite patte d’accrochage 13. Chaque surface de contact 17 est configurée pour coopérer une arête de déformation 18 respective prévue sur la partie de manchon tubulaire 8 respective lorsqu’une traction est exercée sur le tube 6 respectif, de manière à déformer élastiquement la patte d’accrochage 13 respective en direction de la portion d’extrémité 5 du tube 6 respectif, afin de provoquer une pénétration de la dent d’accrochage 14 respective dans la portion d’extrémité 5 du tube 6 respectif. De façon avantageuse, chaque saillie de contact 16 est formée par un ergot de contact orienté radialement vers l’extérieur de la bague d’accrochage 12 respective. Each attachment ring 12 is more particularly configured such that, when said attachment ring 12 is received in the respective internal housing 9, the free ends of the attachment lugs 13 provided on said attachment ring 12 are directed opposite a free end, called the insertion end, of the respective tubular sleeve part 8. According to the embodiment shown in Figures 1 to 11, each hooking lug 13 is provided, on its outer face, with a contact projection 16 comprising a contact surface 17 which is inclined from the inside towards the outside and in the direction of a free end of said attachment lug 13. Each contact surface 17 is configured to cooperate with a respective deformation edge 18 provided on the respective tubular sleeve part 8 when traction is exerted on the tube 6 respectively, so as to elastically deform the respective attachment lug 13 in the direction of the end portion 5 of the respective tube 6, in order to cause penetration of the respective attachment tooth 14 in the end portion 5 of the tube 6 respective. Advantageously, each contact projection 16 is formed by a contact lug oriented radially outward from the respective attachment ring 12.
Comme montré sur les figures 4 à 6, chaque bague d’accrochage 12 comporte en outre une collerette annulaire 19 comportant une surface d’appui axiale 21 configurée pour coopérer avec une surface de butée axiale 22 prévue sur la partie de manchon tubulaire 8 respective lors d’une insertion de ladite bague d’accrochage 12 dans le logement interne 9 respectif, de manière à limiter la course d’insertion de ladite bague d’accrochage 12 dans le logement interne 9 respectif. Selon le mode de réalisation représenté sur les figures 1 à 11 , chaque surface d’appui axiale 21 s’étend sensiblement perpendiculairement à l’axe central A de la bague d’accrochage 12 respective. As shown in Figures 4 to 6, each attachment ring 12 further comprises an annular flange 19 comprising an axial bearing surface 21 configured to cooperate with an axial abutment surface 22 provided on the respective tubular sleeve part 8 when an insertion of said attachment ring 12 into the respective internal housing 9, so as to limit the insertion stroke of said attachment ring 12 into the respective internal housing 9. According to the embodiment shown in Figures 1 to 11, each axial bearing surface 21 extends substantially perpendicular to the central axis A of the respective attachment ring 12.
De façon avantageuse, la surface d’appui axiale 21 prévue sur chaque bague d’accrochage 12 est annulaire, et la collerette annulaire 19 de chaque bague d’accrochage 12 est prévue à une extrémité de ladite bague d’accrochage 12 qui est configurée pour être située du côté de l’extrémité libre de la partie de manchon tubulaire 8 respective lorsque ladite bague d’accrochage 12 est reçue dans le logement interne 9 respectif. Advantageously, the axial bearing surface 21 provided on each attachment ring 12 is annular, and the annular flange 19 of each attachment ring 12 is provided at one end of said attachment ring 12 which is configured to be located on the side of the free end of the respective tubular sleeve portion 8 when said attachment ring 12 is received in the respective internal housing 9.
Comme montré sur la figure 8, chaque bague d’accrochage 12 est configurée de telle sorte qu’un jeu radial est défini entre la surface de contact 17 prévue sur chaque patte d’accrochage 13 et l’arête de déformation 18 respective lorsque la surface d’appui axiale 21 prévue sur ladite bague d’accrochage 12 prend appui contre la surface de butée axiale 22 respective. As shown in Figure 8, each attachment ring 12 is configured such that a radial play is defined between the contact surface 17 provided on each attachment lug 13 and the respective deformation edge 18 when the surface axial support 21 provided on said attachment ring 12 bears against the respective axial abutment surface 22.
Chaque bague d’accrochage 12 comporte en outre des moyens de fixation configurés pour être fixés à la partie de manchon tubulaire 8 respective lorsque ladite bague d’accrochage 12 est reçue dans le logement interne 9 respectif, de manière à empêcher un retrait de ladite bague d’accrochage 12 hors du logement interne 9 respectif. Each attachment ring 12 further comprises attachment means configured to be attached to the respective tubular sleeve part 8 when said attachment ring 12 is received in the respective internal housing 9, so as to prevent said ring from being withdrawn. hooking 12 out of the internal housing 9 respective.
De façon avantageuse, les moyens de fixation prévus sur chaque bague d’accrochage 12 comportent deux pattes de fixation 24 qui sont diamétralement opposées par rapport à l’axe central A de la bague d’accrochage 12 respective et qui s’étendent parallèlement à l’axe central A de la bague d’accrochage 12 respective. Selon le mode de réalisation représenté sur les figures 1 à 11 , les pattes d’accrochage 13 et les pattes de fixation 24 de chaque bague d’accrochage 12 s’étendent à partir de la collerette annulaire 19 respective. Advantageously, the fixing means provided on each attachment ring 12 comprise two fixing lugs 24 which are diametrically opposite with respect to the central axis A of the respective attachment ring 12 and which extend parallel to the central axis A of the respective attachment ring 12. According to the embodiment shown in Figures 1 to 11, the attachment lugs 13 and the fixing lugs 24 of each attachment ring 12 extend from the respective annular collar 19.
Chaque patte de fixation 24 est élastiquement déformable selon une direction radiale par rapport à l’axe central A de la bague d’accrochage 12 respective, et est pourvue d’un organe de fixation mâle 25 configuré pour coopérer, par exemple par encliquetage, avec un élément de fixation femelle 26 respectif prévu sur la partie de manchon tubulaire 8 respective. De façon avantageuse, l’organe de fixation mâle 25 prévu sur chaque patte de fixation 24 est un ergot de fixation orienté radialement vers l’extérieur de la bague d’accrochage 12 respective. Each fixing lug 24 is elastically deformable in a radial direction with respect to the central axis A of the respective attachment ring 12, and is provided with a male fixing member 25 configured to cooperate, for example by snap-fastening, with a respective female fixing element 26 provided on the respective tubular sleeve part 8. Advantageously, the male fixing member 25 provided on each fixing lug 24 is a fixing lug oriented radially towards the outside of the respective attachment ring 12.
Chaque organe de fixation mâle 25 comporte plus particulièrement une surface de retenue 27 configurée pour coopérer avec l’élément de fixation femelle 26 respectif, et plus particulièrement avec une paroi latérale délimitant l’élément de fixation femelle 26 respectif, de manière à empêcher un retrait de la bague d’accrochage 12 respective hors du logement interne 9 respectif. Each male fastener 25 more particularly comprises a retaining surface 27 configured to cooperate with the respective female fastener 26, and more particularly with a side wall delimiting the respective female fastener 26, so as to prevent of the respective attachment ring 12 out of the respective internal housing 9.
Selon le mode de réalisation représenté sur les figures 1 à 11 , chaque élément de fixation femelle 26 est formé par une lumière de fixation traversante qui est prévue sur la partie de manchon tubulaire 8 respective et qui débouche dans le logement interne 9 respectif. De façon avantageuse, chaque partie de manchon tubulaire 8 est pourvue de deux lumières de fixation traversantes qui sont diamétralement opposées par rapport à un axe d’extension de ladite partie de manchon tubulaire 8, et chaque lumière de fixation traversante définie une arête de déformation 18 respective. According to the embodiment represented in FIGS. 1 to 11, each female fixing element 26 is formed by a through fixing slot which is provided on the respective tubular sleeve part 8 and which opens into the respective internal housing 9. Advantageously, each tubular sleeve part 8 is provided with two through fixing slots which are diametrically opposite with respect to an axis of extension of said tubular sleeve part 8, and each crossing fixing slot defines a deformation edge 18 respectively.
Selon le mode de réalisation représenté sur les figures 1 à 11 , chaque lumière de fixation traversante s’étend circonférentiellement par rapport à l’axe d’extension de la partie de manchon tubulaire 8 respective. According to the embodiment shown in Figures 1 to 11, each through fixing slot extends circumferentially relative to the axis of extension of the respective tubular sleeve portion 8.
Comme montré sur les figures 10 et 11 , les moyens de fixation prévus sur chaque bague d’accrochage 12 sont configurés pour autoriser un déplacement en translation axiale de ladite bague d’accrochage 12 dans le logement interne 9 respectif, lorsque ladite bague d’accrochage 12 est fixée à la partie de manchon tubulaire 8 respective. De façon avantageuse, la distance axiale D entre la surface d’appui axiale 21 prévue sur une bague d’accrochage 12 et la surface de retenue 27 prévue sur chaque patte de fixation 24 de ladite bague d’accrochage 12 est supérieure à la distance axiale d entre la surface de butée axiale 22 prévue sur la partie de manchon tubulaire 8 respective et l’arête de déformation 18 respective, de manière à définir un jeu axial entre ladite bague d’accrochage 12 et la partie de manchon tubulaire 8 respective autorisant le déplacement en translation axiale précité de ladite bague d’accrochage 12 dans le logement interne 9 respectif. As shown in Figures 10 and 11, the fixing means provided on each attachment ring 12 are configured to allow movement in axial translation of said attachment ring 12 in the respective internal housing 9, when said attachment ring 12 is fixed to the respective tubular sleeve part 8. Advantageously, the axial distance D between the axial bearing surface 21 provided on a fastening ring 12 and the retaining surface 27 provided on each fixing lug 24 of said fastening ring 12 is greater than the axial distance d between the axial abutment surface 22 provided on the respective tubular sleeve part 8 and the respective deformation edge 18, so as to define an axial clearance between said attachment ring 12 and the respective tubular sleeve part 8 allowing the displacement in aforementioned axial translation of said attachment ring 12 in the respective internal housing 9.
De façon avantageuse, la saillie de contact 16, prévue sur chaque patte d’accrochage 13, est configurée pour s’étendre au moins en partie dans l’élément de fixation femelle 26 prévu sur la partie de manchon tubulaire 8 respective, lorsque la bague d’accrochage 12 respective est reçue dans le logement interne 9 respectif. Advantageously, the contact projection 16, provided on each hooking lug 13, is configured to extend at least partly into the fixing element female 26 provided on the respective tubular sleeve portion 8, when the respective attachment ring 12 is received in the respective internal housing 9.
Une telle configuration de chaque bague d’accrochage 12 permet, lorsqu’un tube 6 est inséré dans un logement interne 9 prévu sur une partie de manchon tubulaire 8 (voir la figure 8), d’autoriser une déformation radiale de chaque patte d’accrochage 13, prévue sur la bague d’accrochage 12 respective, vers l’extérieur de ladite bague d’accrochage 12, et donc de permettre le raccordement dudit tube 6 au corps de raccord 3. Une telle configuration de chaque bague d’accrochage 12 permet également, lorsqu’une traction est exercée sur un tube 6 monté dans le corps de raccord 3 et que ledit tube 6 et la bague d’accrochage 12 respective sont déplacés en translation dans la position représentée sur la partie gauche de la figure 9, de déformer élastiquement chaque patte d’accrochage 13 en direction de la portion d’extrémité 5 dudit tube 6 et donc de provoquer une pénétration de chaque dent d’accrochage 14 dans la portion d’extrémité 5 dudit tube 6. Such a configuration of each attachment ring 12 makes it possible, when a tube 6 is inserted into an internal housing 9 provided on a part of the tubular sleeve 8 (see FIG. 8), to allow radial deformation of each lug of hooking 13, provided on the respective hooking ring 12, towards the outside of said hooking ring 12, and therefore to allow the connection of said tube 6 to the coupling body 3. Such a configuration of each hooking ring 12 also allows, when traction is exerted on a tube 6 mounted in the coupling body 3 and said tube 6 and the respective attachment ring 12 are moved in translation into the position shown on the left part of Figure 9, to elastically deform each hooking lug 13 in the direction of the end portion 5 of said tube 6 and therefore to cause penetration of each hooking tooth 14 into the end portion 5 of said tube 6.
Comme montré plus particulièrement sur la figure 3, chaque partie de manchon tubulaire 8 comporte deux rampes de déformation 28 configurées chacune pour déformer radialement une patte de fixation 24 respective, par exemple vers l’intérieur de la bague d’accrochage 12 respective, lors d’une insertion de la bague d’accrochage 12 respective dans le logement interne 9 respectif, et ce de manière à faciliter l’encliquetage de la patte de fixation 24 respective dans l’élément de fixation femelle 26 respectif. As shown more particularly in FIG. 3, each tubular sleeve part 8 comprises two deformation ramps 28 each configured to radially deform a respective fixing lug 24, for example towards the inside of the respective attachment ring 12, during an insertion of the respective attachment ring 12 in the respective internal housing 9, and this in such a way as to facilitate the latching of the respective fixing lug 24 in the respective female fixing element 26.
De façon avantageuse, chaque partie de manchon tubulaire 8 comporte également deux zones de guidage 29 configurées chacune pour guider axialement une patte de fixation 24 respective lors de l’insertion de la bague d’accrochage 12 respective dans le logement interne 9 respectif. Chaque rampe de déformation 28 est avantageusement prévue à une extrémité d’une zone de guidage 29 respective, et chaque zone de guidage 29 est configurée pour ne pas déformer radialement la patte de fixation 24 respective lors de l’insertion de la bague d’accrochage 12 respective dans le logement interne 9 respectif. Advantageously, each part of the tubular sleeve 8 also comprises two guide zones 29 each configured to axially guide a respective fixing lug 24 during the insertion of the respective attachment ring 12 into the respective internal housing 9. Each deformation ramp 28 is advantageously provided at one end of a respective guide zone 29, and each guide zone 29 is configured so as not to radially deform the respective fixing lug 24 during insertion of the attachment ring 12 respectively in the internal housing 9 respective.
Selon le mode de réalisation représenté sur les figures 1 à 11 , chaque patte de fixation 24 est avantageusement munie, sur sa face intérieure, d’une saillie d’appui 24.1 configurée pour prendre appui contre une surface extérieure de la portion d’extrémité 5 du tube 6 respectif, de manière à verrouiller ladite patte de fixation 24 dans une position de fixation lorsque le tube 6 respectif est reçu dans la partie de manchon tubulaire 8 respective. According to the embodiment shown in Figures 1 to 11, each fixing lug 24 is advantageously provided, on its inner face, with a support projection 24.1 configured to bear against an outer surface of the end portion 5 of the respective tube 6, so as to lock said fixing lug 24 in a fixing position when the respective tube 6 is received in the respective tubular sleeve part 8.
Le raccord instantané 2 comprend en outre deux joints d’étanchéité annulaires 31 configurés chacun pour être disposés dans un logement interne 9 respectif, et pour assurer une étanchéité entre le tube 6 respectif et la partie de manchon tubulaire 8 respective. The instant fitting 2 further comprises two annular seals 31 each configured to be placed in a respective internal housing 9, and to provide a seal between the respective tube 6 and the respective tubular sleeve part 8.
Chaque bague d’accrochage 12 comporte avantageusement une partie d’entretoisement 32 configurée pour s’étendre entre le joint d’étanchéité annulaire 31 respectif et les moyens d’accrochage prévus sur ladite bague d’accrochage 12 lorsque ladite bague d’accrochage 12 est reçue dans le logement interne 9 respectif. Chaque partie d’entretoisement 32 est annulaire et est plus particulièrement configurée pour protéger le joint d’étanchéité annulaire 31 respectif des moyens d’accrochage prévus sur la bague d’accrochage 12 respective. Each attachment ring 12 advantageously comprises a spacer portion 32 configured to extend between the respective annular seal 31 and the attachment means provided on said attachment ring 12 when said attachment ring 12 is received in the respective internal housing 9. Each spacer portion 32 is annular and is more particularly configured to protect the respective annular seal 31 from the attachment means provided on the respective attachment ring 12.
De façon avantageuse, chaque partie d’entretoisement 32 peut être configurée pour prendre appui contre le joint d’étanchéité annulaire 31 respectif lorsque la bague d’accrochage 12 respective est reçue dans le logement interne 9 respectif et que la surface d’appui axiale 21 respective prend appui contre la surface de butée axiale 22 prévue sur la partie de manchon tubulaire 8 respective. Une telle configuration de chaque bague d’accrochage 12 permet, lors du raccordement d’un tube 6 à la partie de manchon tubulaire 8 respective, d’assurer une légère compression du joint d’étanchéité annulaire 31 respectif par la partie d’entretoisement 32 respective, et donc d’amorcer l’accrochage dudit tube 6. Advantageously, each spacer part 32 can be configured to bear against the respective annular seal 31 when the respective attachment ring 12 is received in the respective internal housing 9 and the axial bearing surface 21 respective bears against the axial abutment surface 22 provided on the respective tubular sleeve portion 8. Such a configuration of each attachment ring 12 makes it possible, when connecting a tube 6 to the respective tubular sleeve part 8, to ensure a slight compression of the respective annular seal 31 by the spacer part 32 respective, and therefore to initiate the attachment of said tube 6.
Selon le mode de réalisation représenté sur les figures 1 à 11 , chaque bague d’accrochage 12 comporte de plus un élément d’indexation angulaire 33 (voir la figure 4), tel qu’une nervure d’indexation angulaire prévue sur une surface extérieure de ladite bague d’accrochage 12, configuré pour coopérer avec un organe d’indexation angulaire, tel qu’une rainure d’indexation angulaire, prévu sur la partie de manchon tubulaire 8 respective, de manière à définir une position d’insertion de chaque bague d’accrochage 12 dans le logement interne 9 respectif. De façon avantageuse, la nervure d’indexation angulaire est rectiligne et s’étend parallèlement à l’axe central A de la bague d’accrochage 12 respective. According to the embodiment shown in Figures 1 to 11, each attachment ring 12 further comprises an angular indexing element 33 (see Figure 4), such as an angular indexing rib provided on an outer surface of said attachment ring 12, configured to cooperate with an angular indexing member, such as an angular indexing groove, provided on the respective tubular sleeve part 8, so as to define an insertion position of each hooking ring 12 in the respective internal housing 9. Advantageously, the angular indexing rib is rectilinear and extends parallel to the central axis A of the respective attachment ring 12.
Les figures 12 à 15 représentent un raccord instantané 2 selon un deuxième mode de réalisation de l’invention qui diffère du premier mode de réalisation représenté sur les figures 1 à 11 essentiellement en ce que l’élément de fixation femelle 26 prévu sur chaque partie de manchon tubulaire 8 est formé par une rainure de fixation annulaire qui est prévue sur une surface intérieure de la partie de manchon tubulaire 8 respective, et en ce que chaque embout de raccordement tubulaire 4 est distinct et séparé de la partie de manchon tubulaire 8 respective, et est configuré pour être monté sur le tube 6 respectif avant l’insertion de ce dernier dans la partie de manchon tubulaire 8 respective Figures 12 to 15 show a push-in fitting 2 according to a second embodiment of the invention which differs from the first embodiment shown in Figures 1 to 11 essentially in that the female fixing element 26 provided on each part of tubular sleeve 8 is formed by an annular fixing groove which is provided on an inner surface of the respective tubular sleeve part 8, and in that each tubular connection end piece 4 is distinct and separate from the respective tubular sleeve part 8, and is configured to be mounted on the respective tube 6 before the latter is inserted into the respective tubular sleeve part 8
En outre, selon le mode de réalisation représenté sur les figures 12 à 15, chaque bague d’accrochage 12 est dépourvue de moyens d’indexation angulaire, et chaque arête de déformation 18 est annulaire et s’étend donc sur 360°. In addition, according to the embodiment shown in Figures 12 to 15, each attachment ring 12 has no angular indexing means, and each deformation edge 18 is annular and therefore extends over 360°.
De plus, selon le mode de réalisation représenté sur les figures 12 à 15, la partie de butée axiale 11 est formée par un épaulement annulaire, et chaque embout de raccordement tubulaire 4 comporte un rebord d’appui annulaire 34 configuré pour prendre appui contre l’extrémité libre du tube 6 respectif et pour être interposé entre l’extrémité libre du tube 6 respectif et la partie de butée axiale 11 . Moreover, according to the embodiment represented in FIGS. 12 to 15, the axial abutment part 11 is formed by an annular shoulder, and each tubular connection endpiece 4 comprises an annular bearing rim 34 configured to bear against the free end of the respective tube 6 and to be interposed between the free end of the respective tube 6 and the axial stop part 11 .
Comme il va de soi, l'invention ne se limite pas aux seules formes d’exécution de ce raccord instantané, décrites ci-dessus à titre d’exemples, elle en embrasse au contraire toutes les variantes de réalisation. It goes without saying that the invention is not limited solely to the embodiments of this instant fitting, described above by way of examples, on the contrary it embraces all variant embodiments.

Claims

REVENDICATIONS
1. Raccord instantané (2) pour tubes, comprenant : 1. Instant fitting (2) for tubes, comprising:
- un corps de raccord (3) comprenant une partie de manchon tubulaire (8) dans laquelle est destinée à être reçue une portion d’extrémité (5) d’un tube (6), la partie de manchon tubulaire (8) comprenant un logement interne (9) configuré pour s’étendre autour de la portion d’extrémité (5) du tube (6), - a coupling body (3) comprising a tubular sleeve part (8) in which an end portion (5) of a tube (6) is intended to be received, the tubular sleeve part (8) comprising a internal housing (9) configured to extend around the end portion (5) of the tube (6),
- une bague d’accrochage (12) configurée pour être reçue dans le logement interne (9) et pour s’étendre autour de la portion d’extrémité (5) du tube (6), la bague d’accrochage (12) comprenant des moyens d’accrochage configurés pour coopérer avec une surface extérieure de la portion d’extrémité (5) du tube (6) de manière à empêcher un retrait de la portion d’extrémité (5) du tube (6) hors de la partie de manchon tubulaire (8), les moyens d’accrochage comportant une pluralité de pattes d’accrochage (13) qui sont réparties autour de l’axe central (A) de la bague d’accrochage (12), chaque patte d’accrochage (13) étant élastiquement déformable selon une direction radiale par rapport à l’axe central (A) de la bague d’accrochage (12), caractérisé en ce que la bague d’accrochage (12) comporte en outre des moyens de fixation configurés pour être fixés à la partie de manchon tubulaire (8) lorsque la bague d’accrochage (12) est reçue dans le logement interne (9), de manière à empêcher un retrait de la bague d’accrochage (12) hors du logement interne (9), les moyens de fixation comportant au moins une patte de fixation (24) qui est élastiquement déformable selon une direction radiale par rapport à l’axe central (A) de la bague d’accrochage (12), l’au moins une patte de fixation (24) étant pourvue d’un organe de fixation (25) qui est configuré pour coopérer par encliquetage avec un élément de fixation (26) prévu sur la partie de manchon tubulaire (8) et qui est pourvu d’une surface de retenue (27) configurée pour coopérer avec la partie de manchon tubulaire (8) de manière à empêcher un retrait de la bague d’accrochage (12) hors du logement interne (9). - a hooking ring (12) configured to be received in the internal housing (9) and to extend around the end portion (5) of the tube (6), the hooking ring (12) comprising hooking means configured to cooperate with an outer surface of the end portion (5) of the tube (6) so as to prevent the end portion (5) of the tube (6) from withdrawing from the part of tubular sleeve (8), the hooking means comprising a plurality of hooking lugs (13) which are distributed around the central axis (A) of the hooking ring (12), each hooking lug (13) being elastically deformable in a radial direction with respect to the central axis (A) of the attachment ring (12), characterized in that the attachment ring (12) further comprises attachment means configured to be fixed to the tubular sleeve part (8) when the gripping ring (12) is received in the internal housing (9), so as to prevent removal of the attachment ring (12) outside the internal housing (9), the fixing means comprising at least one fixing lug (24) which is elastically deformable in a direction radial with respect to the central axis (A) of the attachment ring (12), the at least one fixing lug (24) being provided with a fixing member (25) which is configured to cooperate by snap-fastening with a fixing element (26) provided on the part of tubular sleeve (8) and which is provided with a retaining surface (27) configured to cooperate with the tubular sleeve part (8) in such a way as to prevent withdrawal of the gripping ring (12) from the internal housing (9).
2. Raccord instantané (2) selon la revendication 1 , dans lequel l’organe de fixation (25) est un organe de fixation mâle et l’élément de fixation (26) est un élément de fixation femelle. 2. Instant fitting (2) according to claim 1, wherein the fastener (25) is a male fastener and the fastener (26) is a female fastener.
3. Raccord instantané (2) selon la revendication 1 ou 2, dans lequel l’élément de fixation (26) est une rainure de fixation ou une lumière de fixation traversante. 3. Push-in fitting (2) according to claim 1 or 2, in which the fixing element (26) is a fixing groove or a through fixing slot.
4. Raccord instantané (2) selon l’une quelconque des revendications 1 à 3, dans lequel les moyens de fixation sont configurés pour autoriser un déplacement en translation axiale de la bague d’accrochage (12) dans le logement interne (9), lorsque les moyens de fixation sont fixés à la partie de manchon tubulaire (8). 4. Instant fitting (2) according to any one of claims 1 to 3, wherein the fixing means are configured to allow movement in axial translation of the attachment ring (12) in the internal housing (9), when the fastening means are fixed to the tubular sleeve part (8).
5. Raccord instantané (2) selon l’une quelconque des revendications 1 à 4, dans lequel chaque patte d’accrochage (13) est munie, sur sa face intérieure, d’une dent d’accrochage (14) configurée pour coopérer avec la surface extérieure de la portion d’extrémité (5) du tube (6). 5. Instant fitting (2) according to any one of claims 1 to 4, wherein each hooking lug (13) is provided, on its inner face, with a hooking tooth (14) configured to cooperate with the outer surface of the end portion (5) of the tube (6).
6. Raccord instantané (2) selon l’une quelconque des revendications 1 à 5, dans lequel chaque patte d’accrochage (13) est munie, sur sa face extérieure, d’une surface de contact (17) qui est inclinée de l’intérieur vers l’extérieur et en direction d’une extrémité libre de ladite patte d’accrochage (13), la surface de contact (17) prévue sur chaque patte d’accrochage (13) étant configurée pour coopérer avec la partie de manchon tubulaire (8) lorsqu’une traction est exercée sur un tube (6) monté dans le corps de raccord, de manière à déformer élastiquement la patte d’accrochage (13) respective en direction de la portion d’extrémité (5) du tube (6). 6. Instant fitting (2) according to any one of claims 1 to 5, wherein each hooking lug (13) is provided, on its outer face, with a contact surface (17) which is inclined l inside outwards and towards a free end of said hooking lug (13), the contact surface (17) provided on each hooking lug (13) being configured to cooperate with the sleeve part tube (8) when traction is exerted on a tube (6) mounted in the coupling body, so as to elastically deform the respective hooking lug (13) in the direction of the end portion (5) of the tube (6).
7. Raccord instantané (2) selon l’une quelconque des revendications 1 à 6, dans lequel la bague d’accrochage (12) comporte un élément d’indexation angulaire (33) configuré pour coopérer avec la partie de manchon tubulaire (8) de manière à définir une position d’insertion de la bague d’accrochage (12) dans le logement interne (9). 7. Instant fitting (2) according to any one of claims 1 to 6, wherein the attachment ring (12) comprises an angular indexing element (33) configured to cooperate with the tubular sleeve part (8) so as to define a position for inserting the attachment ring (12) into the internal housing (9).
8. Raccord instantané (2) selon l’une quelconque des revendications 1 à 7, lequel comprend en outre un joint d’étanchéité annulaire (31 ) configuré pour être disposé dans le logement interne (9), la bague d’accrochage (12) comportant une partie d’entretoisement configurée pour s’étendre entre le joint d’étanchéité annulaire (31 ) et les moyens d’accrochage lorsque la bague d’accrochage (12) est reçue dans le logement interne (9). 8. Instant fitting (2) according to any one of claims 1 to 7, which further comprises an annular seal (31) configured to be disposed in the internal housing (9), the attachment ring (12 ) comprising a spacer portion configured to extend between the annular seal (31) and the attachment means when the attachment ring (12) is received in the internal housing (9).
9. Raccord instantané (2) selon l’une quelconque des revendications 1 à 8, dans lequel la bague d’accrochage (12) comporte une surface d’appui axiale (21 ) configurée pour coopérer avec une surface de butée axiale (22) prévue sur la partie de manchon tubulaire (8) lors d’une insertion de la bague d’accrochage (12) dans le logement interne (9), de manière à limiter la course d’insertion de la bague d’accrochage (12) dans le logement interne (9). 9. Instant fitting (2) according to any one of claims 1 to 8, wherein the attachment ring (12) comprises an axial bearing surface (21) configured to cooperate with an axial abutment surface (22) provided on the tubular sleeve part (8) when inserting the attachment ring (12) into the internal housing (9), so as to limit the insertion stroke of the attachment ring (12) in the internal housing (9).
10. Raccord instantané selon l’une quelconque des revendications 1 à 9, dans lequel le corps de raccord (3) comporte en outre un embout de raccordement tubulaire (4) destiné 17 à être introduit dans la portion d’extrémité (5) du tube (6), la partie de manchon tubulaire (8) étant disposée autour de l’embout de raccordement tubulaire (4). 10. Instant fitting according to any one of claims 1 to 9, wherein the fitting body (3) further comprises a tubular connection piece (4) intended 17 to be introduced into the end portion (5) of the tube (6), the tubular sleeve part (8) being arranged around the tubular connection endpiece (4).
11. Raccord instantané selon l’une quelconque des revendications 1 à 10, dans lequel l’au moins une patte de fixation (24) est distincte des pattes d’accrochage (13). 11. Instant fitting according to any one of claims 1 to 10, wherein the at least one fixing lug (24) is separate from the hooking lugs (13).
PCT/FR2021/051631 2020-09-22 2021-09-22 Quick coupling for tubes WO2022064143A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FRFR20/09598 2020-09-22
FR2009598A FR3114370A1 (en) 2020-09-22 2020-09-22 Push-in fitting for tubing

Publications (1)

Publication Number Publication Date
WO2022064143A1 true WO2022064143A1 (en) 2022-03-31

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ID=73401820

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR2021/051631 WO2022064143A1 (en) 2020-09-22 2021-09-22 Quick coupling for tubes

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FR (1) FR3114370A1 (en)
WO (1) WO2022064143A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6224117B1 (en) * 1998-10-05 2001-05-01 Dana Corporation Contaminant resistant tube fitting
FR2831643A1 (en) * 2001-10-31 2003-05-02 Comap REMOVABLE INSTANTANEOUS CONNECTION FOR AT LEAST ONE TUBE
WO2005024284A1 (en) * 2003-09-04 2005-03-17 Sang-A Pneumatic Co., Ltd. Tube coupling
GB2570296A (en) * 2018-01-17 2019-07-24 John Guest International Ltd A connector

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6224117B1 (en) * 1998-10-05 2001-05-01 Dana Corporation Contaminant resistant tube fitting
FR2831643A1 (en) * 2001-10-31 2003-05-02 Comap REMOVABLE INSTANTANEOUS CONNECTION FOR AT LEAST ONE TUBE
WO2005024284A1 (en) * 2003-09-04 2005-03-17 Sang-A Pneumatic Co., Ltd. Tube coupling
GB2570296A (en) * 2018-01-17 2019-07-24 John Guest International Ltd A connector

Also Published As

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