WO2003010462A1 - Rondelle d'accrochage et dispositif de raccordement comportant une telle rondelle - Google Patents
Rondelle d'accrochage et dispositif de raccordement comportant une telle rondelle Download PDFInfo
- Publication number
- WO2003010462A1 WO2003010462A1 PCT/FR2002/002248 FR0202248W WO03010462A1 WO 2003010462 A1 WO2003010462 A1 WO 2003010462A1 FR 0202248 W FR0202248 W FR 0202248W WO 03010462 A1 WO03010462 A1 WO 03010462A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- washer
- teeth
- connection device
- recess
- stable state
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- 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
- F16L37/098—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 flexible hooks
- F16L37/0982—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 flexible hooks with a separate member for releasing the coupling
-
- 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
- F16L37/091—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 a ring provided with teeth or fingers
Definitions
- the present invention relates to a coupling washer and a corresponding connection device, such as an instant connection connector, usable in a fluid transport circuit, in particular for connecting a tube to another tube, to a fluid emitting element such as a pump or to a fluid receiving element such as a reservoir.
- a coupling washer and a corresponding connection device such as an instant connection connector, usable in a fluid transport circuit, in particular for connecting a tube to another tube, to a fluid emitting element such as a pump or to a fluid receiving element such as a reservoir.
- a connection device of known type generally comprises a female part comprising a body in which is formed a bore for receiving a tube end and means for retaining the tube in the bore.
- These means include an elastically deformable washer having an inner circumference which has a diameter less than an outer diameter of the tube and is divided into a plurality of teeth, and an outer part which is received in a groove formed in the bore.
- the teeth are raised by bending to allow the tube to pass and, under the effect of the elasticity of the material constituting the washer, the free end of the teeth is applied to the external surface of the tube.
- the free end of the teeth comes to bite the outer surface of the tube and the teeth s 'brace by opposing the force exerted on the tube.
- the teeth do not immediately bite the tube, in particular when the external surface of the tube is particularly smooth or hard, which then results in a displacement of the end of the tube which tends to escape from the bore. .
- the locking means of the pipe end use a locking member which is interposed between a radial surface of the pipe end (groove or flange) and a radial surface of the body of the fitting
- This keying member can be introduced manually or can be held in its locking position by an elastic return member against the effect of which it can be placed in a retracted state (either moved or deformed) during the introduction of the nozzle.
- the latch is constituted by a ring mounted with radial sliding in a housing formed in the body of the fitting, between a first rest and locking position where it is eccentric relative to the axis of the bore of the body of the connector so as to have a part projecting therein and a second retracted position where it is substantially coaxial with this bore.
- An elastic member constituted by two tongues in one piece with the ring e ⁇ st interposed between the ring and the part and tends to return the ring to its first position.
- the portion of the ring that is axially supported could be increased, which would increase its external dimensions and therefore the transverse dimensions of the body of the fitting. Furthermore, here again the part of the ring projecting inside the bore rubs against the external surface of the pipe end, thus risking damaging the latter.
- a fastening washer comprising teeth, the washer being arranged to be elastically deformable between first and second stable states on either side of an unstable state, in which states the teeth are stable. define two passage sections respectively of small and large dimensions relative to each other.
- the washer in its second stable state, can delimit a passage section with a diameter greater than the diameter of the male element of which it is intended to ensure attachment, so that the teeth do not come to rub on the external surface of this during its introduction into the fitting and, in its first stable state, the washer can delimit a passage section such that the teeth cooperate with the element to retain the latter.
- the washer comprises a tapered arinular part having a projecting face from which extend the teeth, the teeth having an L-shape and having- a free end oriented towards the inside of the washer, and this face being concave in the first stable state and convex in the second stable state.
- the structure of this attachment washer has the advantage of being simple and compact.
- the invention also relates to a connection device comprising such a washer.
- FIG. 1 is a partial view in longitudinal section of a connection device according to a first embodiment of the invention, the fastening washer being in an unlocked state ,
- FIG. 2 is a view similar to FIG. 1 of this connection device, the hooking washer being in a locked state
- FIG. 3 is a perspective view of the attachment washer and the associated disconnection ring
- - Figure 4 is a view similar to Figure 2 of a connection device according to a second embodiment of the invention.
- connection device is intended to be installed in a fluid transport circuit in particular for connecting a tube T to an organ of the circuit not shown such as another tube, a fluid emitting member such as a pump or fluid receiver such as a reservoir.
- the connection device comprises a female element comprising a body generally designated at 1 provided with means not shown for its " connection to a channel of one member and in which is formed a stage bore bearing the general reference 2 for receiving a first male part 3 of a tubular end piece generally designated at 4 which has a second male part 5 with fir teeth force-fitted in a manner known per se into the tube T.
- the end piece can also be secured to equipment (in one piece with this or reported).
- the means of connection of the female part to the gane can be of any suitable type and for example comprise a male part similar to the male part 5 and intended to be force fitted into the channel of the organ.
- the male part 3 has an external surface divided by an annular step 6.
- the stage 2 bore has a large section recess 7 having a diameter slightly greater than the external diameter of the annular step 6 and a small section recess 8 with a diameter slightly greater than the external diameter of the terminal portion of the male part 3.
- the large section recess 7 and the small section recess 8 are connected by a shoulder 9 intended to form a stop for the insertion of the male part 3 into the bore 2.
- a groove 10 is formed in the large section recess 7 adjacent to the shoulder 9 to receive an anchor washer bearing the general reference 11.
- the anchor washer 11 comprises a frustoconical annular part 12 which has an internal diameter slightly greater than the external diameter of the terminal portion of the male part 3 and which has two opposite faces 13, 14. The face 13 is oriented towards the shoulder 9. Teeth generally designated at 15 extend from the external periphery of the frustoconical annular part 12 projecting from the face 14 thereof.
- the teeth 15 are formed by an L-shaped strip which has a connecting portion 16 to the frustoconical annular part 12 substantially perpendicular to the face 14 and an end portion 17 substantially perpendicular to the connecting portion 16 and oriented towards the inside of the lock washer 11.
- the hanging washer 11 is arranged to be elastically deformable between first and second stable states on either side of an unstable state, in which stable states the teeth define two sections of passage of small and large respectively relative to each other.
- it is the frustoconical annular part 12 which is elastically deformable between a state corresponding to the first stable state (represented in FIG. 2) in which the face 14 is concave and the end edge of the end portions 17 delimit a passage section having a diameter less than the external diameter of the annular step 6, and a state corresponding to the second stable state (shown in FIG. 1) in which the face 14 is convex and the end edge of the end portions 17 delimit a passage section having a diameter less than the external diameter of the annular step 6.
- the fastening washer 11 has an external diameter less than that which it has in the second stable state. In all cases, the external diameter of the attachment washer is greater than the diameter of the large section recess 7.
- the deformation of the frustoconical annular part 12 between its two stable states passes through a hard point corresponding to the unstable state in which the outer periphery and the inner periphery of the. frustoconical annular part 12 lie substantially in the same plane.
- the catch washer 11 is placed in the groove 10 by a slot 18 formed transversely in the body 1 so as to have one end opening into the groove 10 and an opposite end opening to the outside of the body 1.
- the slot 18 has a width between the external diameter of the fastening washer 11 in the first stable state and the external diameter of the fastening washer 11 in the second stable state.
- the catch washer is introduced into the groove 10 via the slot 18 when it is in its first stable state, then it is brought into its second stable state by means described below. It is understood that then, the washer can no longer pass through the slot 18.
- connection device also comprises a disconnection ring 19 comprising axially extending fingers 20 which have free ends 21 arranged to bear on the external periphery of the hooking washer 11.
- the fingers 20 are received with sliding in conduits 22 extending parallel to the large section recess 7 to have one end opening into the groove 10 and an opposite end opening out of the body 11 so that the disconnection ring 19 is movable between a depressed position in which the free end 21 of the fingers 20 is close to the shoulder 9 and an extended position in which the free end 21 of the fingers 20 is separated from the shoulder 9.
- Each finger is provided with an external step 23 which comprises on the side of the free end 21 an inclined surface to facilitate the insertion of the finger 20 into the conduit 22 and on the opposite side a radial surface nt a shoulder to cooperate with a recess 24 formed in the body 1 so as to form a stop delimiting the extended position of the disconnection ring 19.
- the recess 24 is here formed by a part adjacent to the duct 22 of the side of the groove 10 opposed to
- the recess 24 can also be produced at a point of the conduit 22, the step 23 being positioned correspondingly along the finger 20.
- connection of the tube T previously equipped with the tubular end piece 4 is carried out by introducing the male part 3 into the bore stage 2 by the recess of large section 7.
- the annular step 6 abuts against the face 14 near the inner periphery of the frustoconical annular part 12 and exerts on it a thrust force which pushes the portion of the external annular part 12 adjacent to the internal periphery of it.
- the frustoconical annular part 12 is then deformed slightly beyond its unstable state so that the hooking washer it passes to its first stable state and the face 14 passes from its convex shape to its concave shape.
- the disconnection ring 19 is then held in its extended position by the external periphery of the frustoconical annular part 12 bearing against the free ends 21 of the fingers 20, which signals to the operator that the connection has been locked. (as long as the disconnection ring 19 is free to move between its depressed position and its extended position, the connection is not locked). In addition, the deformation of the washer between its two stable states causes a snap which also indicates that the connection has been locked.
- Disconnection is achieved by driving in the disconnection ring 19 so that the free ends 21 of the fingers 20 exert on the outer periphery of the frustoconical annular part 12 a pushing force which tends to deform the frustoconical annular part 12 towards its second state stable. It then only remains to pull on the tube T to disconnect it.
- connection device makes it possible to connect the tube T to the body 1 without requiring the interposition of a nozzle.
- connection device of this embodiment has a structure identical to that of the connection device previously described except with regard to the characteristics mentioned below.
- the large section recess 7 has a diameter slightly greater than the external diameter of the tube T.
- the frustoconical annular part 12 of the attachment washer it has an internal diameter less than the external diameter of the tube T.
- the hooking washer 11 is arranged in such a way that the small passage section has a diameter less than the external diameter of the tube T and the large passage section has a diameter greater than the external diameter of the tube T.
- the end edge of the end portions 17 is arranged (for example beveled) to bite the external surface of the tube T.
- the groove 10 comprises, opposite the shoulder 9, a beveled flank 25 to form a surface for feeding the hooking washer 11 to its first stable state.
- the attachment washer 11 being in its second stable state, when a tube T is introduced into the recess of large section 7, the end face of the latter abuts against the face 14 of the frustoconical annular part 12 which under the effort of introduction is brought to its first stable state.
- the end portions 17 are then in abutment against the external surface of the tube T and bite into it.
- the tube T slightly recedes and drives the catch washer 11 whose teeth 13 come into abutment against the bevelled side 25 which tends to bring the end edges of the end portions 17 closer to one another and thus force the fastening washer 11 towards its first state.
- This approximation effort increases the bite of the external surface of the tube T by the end edges of the teeth 13.
- Disconnection is carried out as above by driving in the disconnection ring 19 to bring the latching washer 11 into its second state.
- the disconnection ring is optional (the invention also relates to connection devices without the possibility of disconnection) and the attachment washer 11 can be brought from its first state to its second state by means of a tool such as a screwdriver inserted in slot 18.
- disconnection ring has been shown circular and split to allow, for example, its installation after connection of the tube T, the ring may have other shapes and in particular be continuous and be placed permanently on the body 1.
- the disconnection ring can be connected to the end piece by a connection part of low resistance.
- the disconnection ring can be arranged in such a way that, when the washer is in its second stable state, the disconnection ring is retained in the body 1 by the free ends of the fingers and that, when the washer passes into its first stable state , it ejects the disconnection ring from the body 1.
- the ejection of the disconnection ring signals to the operator that the disconnection has been completed correctly.
- the radial surface forming the shoulder of the external steps 23 of the free ends 21 of the fingers 20 can for this purpose be replaced by an inclined surface cooperating with the recesses 24 to cause deformation of the fingers towards the central axis of the body 1 thus allowing the escape external steps.
- the teeth may comprise two parts forming between them an obtuse or acute angle or may have a hook shape.
- the teeth may also extend projecting outwards from the hooking washer to cooperate with a bore.
- the attachment washer can be produced from a bimetallic strip, that is to say from a plate made up of two layers of materials having different coefficients of thermal expansion so that a temperature variation causes a curvature of the plate.
- a bimetallic strip that is to say from a plate made up of two layers of materials having different coefficients of thermal expansion so that a temperature variation causes a curvature of the plate.
- protrusions can be provided on the shoulder 9 to favor the tilting of the frustoconical annular part 12 between its two stable states.
- the shoulder 9 may also have a concave frustoconical shape to favor a unidirectional tilting of the frustoconical part 12 from its second stable state to its first stable state.
- the attachment washer can be immobilized in the connection device by a locking sleeve force-fitted or screwed into the bore of the connection device.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR01/09795 | 2001-07-23 | ||
FR0109795A FR2827647B1 (fr) | 2001-07-23 | 2001-07-23 | Rondelle d'accrochage et dispositif de raccrochement comportant une telle rondelle |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003010462A1 true WO2003010462A1 (fr) | 2003-02-06 |
Family
ID=8865795
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2002/002248 WO2003010462A1 (fr) | 2001-07-23 | 2002-06-28 | Rondelle d'accrochage et dispositif de raccordement comportant une telle rondelle |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR2827647B1 (fr) |
WO (1) | WO2003010462A1 (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012000607A1 (de) * | 2012-01-16 | 2013-07-18 | Norma Germany Gmbh | Kupplungselement und Entriegelungselement für das Kupplungselement |
DE102014103888A1 (de) * | 2014-03-21 | 2015-09-24 | Norma Germany Gmbh | Steckkupplungselement |
EP3564568B1 (fr) * | 2018-05-02 | 2020-03-25 | Wenz Kunststoff GmbH & Co. KG | Raccord rapide |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2146400A (en) * | 1983-09-09 | 1985-04-17 | Imi Norgren Enots Ltd | Pipe coupling |
US5487572A (en) * | 1993-03-19 | 1996-01-30 | Legris S.A. | Quick-connection coupling |
FR2758379A1 (fr) * | 1997-01-14 | 1998-07-17 | Parker Hannifin Rak Sa | Cartouche d'implantation pour un raccord d'un tuyau destine a prendre place dans un logement |
-
2001
- 2001-07-23 FR FR0109795A patent/FR2827647B1/fr not_active Expired - Fee Related
-
2002
- 2002-06-28 WO PCT/FR2002/002248 patent/WO2003010462A1/fr not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2146400A (en) * | 1983-09-09 | 1985-04-17 | Imi Norgren Enots Ltd | Pipe coupling |
US5487572A (en) * | 1993-03-19 | 1996-01-30 | Legris S.A. | Quick-connection coupling |
FR2758379A1 (fr) * | 1997-01-14 | 1998-07-17 | Parker Hannifin Rak Sa | Cartouche d'implantation pour un raccord d'un tuyau destine a prendre place dans un logement |
Also Published As
Publication number | Publication date |
---|---|
FR2827647B1 (fr) | 2004-06-04 |
FR2827647A1 (fr) | 2003-01-24 |
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