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
  • F16L41/00—Branching pipes; Joining pipes to walls
  • F16L41/007—Branching pipes; Joining pipes to walls adjustable and comprising a bend
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
  • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
  • B60T17/04—Arrangements of piping, valves in the piping, e.g. cut-off valves, couplings or air hoses
  • B60T17/043—Brake line couplings, air hoses and stopcocks
• • 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
  • F16L37/0925—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 rings which bite into the wall of 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
  • 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
  • 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

• the object of the present invention is a connection device for plastic tubes comprising instant connection means.
• This type of connection comprises means which make it possible to mount a tube or a connection accessory in an instantaneous connection by a simple push-on on the tube or the accessory without any other maneuver and so that the tube is held in the fitting and that sealing is ensured.
• instant fittings are well known and have been the subject of French patents 2,012,796, 2,319,833, 2,258-585 and 2,749. which belong to the depositor.
• These fittings are widely used in industry for the connection of plastic pipes on machines operating with compressed air.
• the braking of the trucks is carried out by means actuated by compressed air and currently all the old circuits in steel tube are replaced by circuits in plastic tube of the polyamide type with high characteristics.
• One-touch fittings of the known type do not meet the conditions required for their use in braking circuits for trucks, because they imperceptibly scratch the tube made of las i c material . perfectly smooth and cause extremely small leaks, but unacceptable for this type of use.
• the present invention relates to a connecting device for plastic tubes conveying a compressed fluid and in which the tube is instantly mounted by a simple push in means making the tube non-removable.
• connection device is made up of connection accessories provided with at least one female instantaneous connection means and at least one tubular male member, said accessories being combined with mounting members on a device comprising a female instant connection means.
• the female instantaneous connection means comprises a male part, of cylindrical guide
• the tubular male member of semi-flexible plastic material comprises a circular recess, the cylindrical surface of which conforms with a small clearance, the male guide part.
• cylindrical thus constituting a metal support guide absor ⁇ bant the lateral forces likely to be exerted on the male tubular member.
• the device according to the invention makes it possible to obtain a connection having total security of the resistance of the tubular male member due to the metallic guide support and the absorption of forces.
• This cylindrical guide arrangement on the tubular male members and on the female instant connection means is found both on the device mounting members or cartridges and on the connection accessories, so that it is very easy to mount a connection accessory on another accessory by fitting a male member into a female member with a support guide according to 1'in ⁇ vention.
• the fitting depths of the tubular male organ have a length exactly adapted to the depth of the cartridge and to the instant fittings fe ⁇ of different accessories. From this mantle, one can mount a tube or an accessory to a tubular male member, the depth being the same in the instant female connector.
• the device according to the invention includes a guide of the tube and of the male member in the cartridge or the accessory per ⁇ putting the use of short housings, easy to accommodate, with flat bottom, simple to carry out in all the apparatuses and using standardized housings tapped smooth teeth.
• the cartridge forms a short and compact, simple assembly which can be screwed, crimped or fitted, the tube or the tubular male member of which does not protrude from the clamp constituting one of the members of the instantaneous connection means.
• the invention more particularly intended for the compressed air braking device, is not limited to this use and can also be suitable for all medium-pressure fluid circuits which is limited by the resistance of the plastic tubes.
• FIG. 1 is a view in elevation and in section axial view of an embodiment of the connection device according to the invention.
• Figure 2 is the same view as in Figure 1, the cartridge being separated from the accessory.
• Figure 3 is an axial sectional view of a cartridge mounted on an apparatus.
• Figure 4 is an axial sectional view of a cartridge in the disassembled state.
• Figure 5 is an axial sectional view of a cartridge in which is mounted a tube provided with a fur.
• FIG. 6 is a view in elevation and in axial section of another embodiment of a connection device.
• Figure 7 is an axial sectional view of a cartridge with another cylindrical guide mode.
• Figure 8 is an elevational view in axial section of an assembly of several ra ⁇ cording accessories.
• Figure 9 is an elevational view in axial section of an accessory comprising an orga_na_a ⁇ ale consisting of a plastic tube element.
• Figure 10 is an elevational view in axial section of the accessory of Figure 9 mounted in a cartridge.
• Figure 11 is an elevational view in axial section of the connection device in which the sleeve is crimped into the body of the accessory.
• Figure 12 is an axial ⁇ upe view of a connection device in which the cartridge is crimped on the device.
• Figure 13 is an axial sectional view of the cartridge shown in Figure 12.
• Figure 14 is a sectional view of a connection device in which the instantaneous connection clamps are made of cut sheet metal.
• Figures 15 to 17 are views in axial section of cartridges having clamps in sheet metal Vietnamese Vietnamese ⁇ courte.
• Figures 18 to 21 are external elevation views of several embodiments of accessories.
• connection device which is mounted on an apparatus 2 having a tapped hole 2a of shallow depth, delimited by a flat bottom 2b and in which is screwed a cartridge 1 by its threaded portion lf with the interposition of an O-ring seal le.
• the cartridge 1 has internally a cylindrical bore lm (Fig. 3) in which is provided a groove receiving an O-ring seal 1b, said bore being extended by a double conical part In, and a bore lo in which is housed a clamp deformable split 6 comprising one or more hooking teeth 6a and a washer held therein by a 1-1 crimped edge of the cartridge, limiting and retaining the clamp 6 which has an unsplit part 6b of the same diameter as the 1 m bore.
• connection angle 3 comprising a tubular male member 4 of semi-flexible plastic material engaged in the cartridge 1 (Fig.l).
• the tubular male member 4 is mounted in the body 3f of the accessory by means of its flange 4a which is retained by a metallic piece 3b in the form of a cup engaged in a circular housing of the body 3f and locked therein. by means of a crimped edge 3c, a seal 3a being disposed between the collar 4a " of the male member and the housing of the body 3f receiving said collar.
• the tubular male member 4 has a hazard 4b, which opens into an inner conduit 3n of the body 3f of the accessory, said conduit 3n itself opening at its other end into a socket 9 which has a threaded portion 9b screwed into a tapped hole 3d, with a flat bottom 3e, with interposition a sealing O-ring 9a.
• the socket 9 has internally the same shape as the cartridge 1 and receives like this a seal 1b and a clamp 6. In the socket 9 is mounted the end of a tube 5 of semi-flexible plastic which is hung by the tooth 6a of the pliers 6.
• bracket accessory 3 is held by its tubular male member 4 which is engaged and hung in the clamp 6 housed in the cartridge 1, said accessory thus being secured permanently and cannot be dismantled with the cartridge 1 and the tube 5.
• the accessory 3 can be rotated 360 ° around the axis of the cartridge 1.
• connection means can only be carried out by unscrewing the cartridge (the mon ⁇ tage being rotary) from the body 2 by its collar Ih which
• the tubular member 4 being made of semi-flexible plas ⁇ tic material to allow it to hold on to the clamp 6, it therefore has limited resistance and could not in the long term withstand significant lateral forces which would be produced by trac ⁇ tions or other untimely efforts exerted on the tube 5.
• the main characteristic of the invention therefore resides in the fact of providing a resistant metal support means absorbing the lateral forces.
• the circular recess lg, on the cartridge 1, saves the maximum space (Fig. 3) so as to obtain a cartridge 1 very slightly protruding from the device 2 and a square accessory 3 having the smallest possible height .
• the cartridge 1 can be placed in a tapped hole 2a of standard or short depth, limited by a flat bottom, that the sleeve 9 is also in a shallow 3d tapped hole limited by a bottom 3e and that the tube 5 and the male member 4 are engaged at the same depth "l" providing a standard depth rating for the same nominal diameter.
• the diameter of the tube 5 is exactly equal to the diameter of the male member 4 and they are capable of being engaged in the same ins ⁇ tantane connection means.
• the tube 5 or the male member 4 do not exceed the cartridge 1 or the sleeve 9 and occupy the entire length "î".
• the diameters of the parts 3h, lk, and 9k are identical to the mounting tolerances and constitute guide means.
• FIG. 5 there is shown a cartridge 1 mounted on a device 2 and in which is engaged the end of a tube 5 whose central part is soute ⁇ naked against creep by a fur 7 consisting of a tu be metallic in very thin sheet metal.
• the fur 7 makes it possible to considerably improve the heat resistance and in the long term, by eliminating the creep of the tube 5 in plastic material at the level of the tooth 6a, of the clamp and at the tightening of the joint 1b; it is essential for the truck braking system activated by compressed air.
• the useful depth of the cartridge is equal to "i n c *, that is to say almost all of its length.
• Figures 6 and 7 show a variant embodiment of Figure 1 in which the circular recess lg, has been eliminated e in which the male part of cylindrical guide lk lk protrudes completely above the flange lh.
• tubular male member 4 is held by a simple washer 8 by an edge of the body 3f.
• the metallic cylindrical guide surface 3h is produced by the body 3f which is itself made of metal.
• the sleeve 9 is elongated to have the same depth as the cartridge 1 which in this case is a little longer than in the previous example and it protrudes a little more from the device 2 (Fig. 6).
• the socket 9 and the cartridge 1 have a length! ** greater than the length "V * of the previous embodiment.
• Figure 8 there is shown an assembly of an accessory 3 bis identical to the accessory 3 and which comprises a male -tubular member 4 made of plastic which is engaged in the socket 9 of the accessory 3. The assembly can because the depths "l" are identical and the diameter of the male member 4 is the same as that of the socket 9.
• any male-female accessory can receive any accessory of the same diameter with the guide means 9k.
• FIGS. 9 and 10 a variant of FIG. 2 is shown in which the male tubular member 4 made of molded plastic material has been replaced by an element 5a cut from a tube 5 and on which a ring is crimped. 10 with thin lips.
• the element of the tube 5a is supported over its entire internal diameter by a thin metallic fur 7a.
• the tube element 5a and its fur 10 are mounted as in FIG. 2.
• the advantage lies in the fact that for the male member 5a, the same tube 5 as for the canalizations.
• FIG 11 there is shown a varian ⁇ te of Figure 1 in which the sleeve 9 is not vis ⁇ sée on the body 3f of the accessory as before, - but it is simply fitted into a cylindrical housing 3m and held by a crimped edge 3i formed on the body 3f.
• the disassembly of the connection device being carried out by unscrewing the cartridge 1 from the device 2.
• Figure 12 shows an alternative embodiment of Figure 11 in which not only the sleeve 9 is fixed by crimping but also the car ⁇ key 1 which is screwed in the previous embodiments.
• the cartridge 1 is engaged in a cylindrical housing 2m and it is retained by a crimped edge 2p formed on the device.
• the device is no longer removable or repairable and the cartridge is smaller due to the fact that the collar delimited by a hexagon is removed.
• the crimp cartridge 1 shown alone in Figure 13 does not have a hexagon, but a lp gor ⁇ ge intended for crimping and its etan ⁇ h ⁇ Institut joint, is disposed in another groove.
• the crimp cartridge is almost identical to the socket 9, but it additionally comprises the round U le, which maintains the retention of the pliers and which is used as a stop for the tube.
• FIG. 14 there is shown a varian ⁇ te of Figure 1 in which the metal clamp-bar and milled or molded is replaced by a holding piece or clamp in cut sheet metal 11, having legs d r snap elastic 11a, fixing tabs 11b, and stop tabs 11c, said clamp 11 being held in the cartridge 1 by a crimped edge 12 which allows it to rotate along the axis of the cartridge.
• the hooking lugs lia have the characteristic of allowing the tube to be hooked in a non-removable manner.
• the same pin 11 is mounted in the cartridge 1 and the socket 9 which, as before, have the guide means lk, 3h 9k.
• FIG. 15 shows the cartridge alone provided with a clip 11 made of cut sheet metal with its hooking tab 11a, its holding tabs 11b, and its tube stop tab 5.
• FIG. 16 shows a variant of the clamp 11 which is produced in two parts, the holding part 1 with the latching lugs 12a and the washer already used in FIGS. 1 and 16.
• FIG. 17 a variant of FIG. 16 is shown, in which the washer 1c has been removed and the sheet metal clamp 13 for holding is disposed in a groove ls, of the cartridge, said clamp 13 comprising 13c stop tabs of the tube.
• the clamp 13 is mounted by elasticity because it is made of rolled sheet metal with a slot.
• FIGS 18 to 21 there are shown non-limiting examples of mounting accessories, each of which must include at least one instan ⁇ taneous female inlet connection and at least one tubular male member made of semi-flexible plastic.
• FIG. 18 which represents a straight accessory 14 with a female part 14a and a male part 14b
• FIG 20 there is shown an accessory Tee 15 whose straight parts 15a are femel ⁇ and having a male member 15b.
• the diameters of the three ends can be equal, two can be equal, or all three can be unequal.
• the method which would consist in reversing the metallic support guide means, in which the cylindrical male part k is located on the tubular plastic male part and the female part 3h, on the female instant connection means, also remains in the field of the invention.
• the present invention finds its application especially in the ultra-fast assemblies of compressed air circuits for braking trucks, but it can also be used in all industries to economically establish fluid circuits for pressures ranging from vacuum to 20 bars, with quality plastic pipes.
• the invention is not limita ⁇ tive and those skilled in the art can make modifications without departing from the scope of the invention.

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• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Transportation (AREA)
• Quick-Acting Or Multi-Walled Pipe Joints (AREA)
• Valves And Accessory Devices For Braking Systems (AREA)
• Lining Or Joining Of Plastics Or The Like (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=9292763

Family Applications (1)

Country Status (5)

Families Citing this family (4)

Family Cites Families (8)

• 1983
  • 1983-10-03 FR FR8315730A patent/FR2552852B1/fr not_active Expired
• 1984
  • 1984-09-25 EP EP84903548A patent/EP0158658A1/de not_active Withdrawn
  • 1984-09-25 WO PCT/FR1984/000208 patent/WO1985001565A1/fr not_active Application Discontinuation
  • 1984-09-28 ES ES1984290731U patent/ES290731Y/es not_active Expired
  • 1984-10-02 IT IT8453883U patent/IT8453883V0/it unknown
  • 1984-10-02 IT IT67977/84A patent/IT1179136B/it active

Non-Patent Citations (1)

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