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
  • F16L37/10—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members using a rotary external sleeve or ring on one part
  • F16L37/113—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members using a rotary external sleeve or ring on one part the male part having lugs on its periphery penetrating into the corresponding slots provided in the female part

Definitions

• the present invention relates to a tube connection, in particular flexible tubes.
• the technical sector of the invention is that of equipment and accessories for rigid or flexible pipes.
• connections consist of two identical half-connections each comprising two diametrically opposite male / female sectors. At the time of their assembly, said sectors overlap one another by a simple axial engagement and a lock system keeps them assembled.
• Such a fitting is described in patent FR.A. 2 642501 in the name of the applicant.
• the objective of the invention is the implementation of a tube connection with manual tightening without making the use of a locking tool, perfectly sealed, usable for the connection of pipes conveying liquids of all kinds and whatever either their aggressiveness and whose complementarity of their half-fittings is universal, that is to say that the two half-fittings can, by a simple and rapid transformation, be made complementary to one another.
• the tube connector according to the invention composed of two identical half-connectors each comprising a connection sleeve for fixing one end of a tube to it, and a clamping ring coaxial with said sleeve and comprising male / female clamping means with ramps by fraction of a turn, in which said clamping ring of each half-connector is independent of the connection sleeve and cooperates with sealing means arranged between said sleeve and said clamping ring, which comprise in addition two-position locking means to obtain their longitudinal relative displacement and their locking in one or the other position and to carry out the assembly of the two half-couplings and the junction of the two connection sleeves, either inside one or the other of said half-fittings.
• each half-connector is independent of the connection sleeve to rotate with respect thereto, each half-connector further comprising an independent sealing ring in rotation, disposed between said sleeve and said clamping ring,
• the seal being produced by at least one annular seal inserted between the inner periphery of the sealing ring and the outer periphery of the sleeve, said clamping ring being independent of the ' sealing ring in longitudinal translation, the sealing ring sealing being dependent in longitudinal translation of said connecting sleeve, which sleeve and sealing ring comprise locking means in two positions to obtain their longitudinal relative displacement and their locking in one or the other position and to assemble the two half-fittings and the junction of the two connecting sleeves interchangeably, inside the one or the other of said half-fittings.
• each half-connector has a male sector and a female sector which are diametrically opposed, between which are inserted circular recesses capable of receiving the male sector of the other half-connector before the two half-connectors are assembled. by fraction of a turn.
• said male and female sectors and said circular recesses extend over a quarter of circumference, so that, prior to assembly, one of the half-fittings is offset by a quarter of a turn compared to each other.
• the clamping ring of each half-connector has an internal peripheral stop to come near a shoulder reserved for the external periphery of the end of the sealing ring located in the junction plane of said clamping and sealing rings, the relative axial displacement of said rings being limited by an elastic ring placed in a groove reserved for the external periphery of the sealing ring. Said shoulder and said rod tightly frame the stop of the clamping ring.
• the sealing of the fitting is achieved by two O-rings placed in two grooves reserved at the internal periphery of the sealing ring of each half-fitting, whose axes of said seals are located in two planes parallel to each other and perpendicular to the longitudinal axis of the fitting, so that the junction of the two connecting sleeves occurs substantially midway between said planes and inside one or the other half fitting, depending on the relative locked position connection sleeves and sealing rings of the two half-fittings.
• each half-connector has an extension extending opposite the junction plane of the two half-connectors, which extension consists of a coaxial circular wall which delimits an annular space between the clamping rings and d 'tightness and where is located said elastic ring.
• Said two-position locking means of the connection sleeve and of the sealing ring of each half-connection consist of at least one radial lock fixed to the external periphery of the sleeve and cooperating with a locking grid comprising two transverse notches of the same length, parallel to each other and opening into a longitudinal notch.
• each half-connector comprises two radial latches fixed to said sleeve, which are constituted by two coaxial cylindrical tenons and which cooperate with two locking grids whose transverse notches which are perpendicular to the axis of the longitudinal notches extend in opposite directions on either side of the longitudinal axis of the connector, so that the locking or unlocking are effected by fraction of a turn, by relative rotation of the sealing ring and of the connection sleeve. Locking is achieved when the studs reach the bottom of said transverse notches.
• the sealing ring extends outside the sealing ring tightening to allow gripping when locking / unlocking. It has at its end opposite to that which is placed in the junction plane of the half-fittings, an external peripheral groove in which is placed an elastic ring which constitutes a stop stop on which the studs abut in order to connect the ring sealing at the connection sleeve.
• each half-connector comprises a tightening and sealing ring " independent of the connection sleeve to rotate relative to the latter and to be moved in longitudinal translation on said sleeve, the seal being produced by annular seals inserted between the internal periphery of said ring and the external periphery of the sleeve, which sleeves and rings also comprise locking means with two positions, to obtain their relative longitudinal displacement and their locking in one or the another position and carry out the assembly of the two half-fittings and the junction of the two connection sleeves, either inside one or the other of said half-fittings.
• each half-connector comprises two diametrically opposite male members and two diametrically opposite clamping ramps and disposed at 90 ° from said male members, so that said male members of the ring of a half-connector cooperate with said ramps. tightening of the ring of the other half-fitting when joining the two half-fittings by fraction of a turn.
• Each of the rings comprises, on either side of said male members and of the clamping ramps, diametrically opposite female sectors allowing the passage of said male members from the opposite ring during the junction of the half-fittings.
• Said clamping ramps are delimited laterally by two lines converging on the center o of the ring and forming an angle ⁇ of the order of 90 ° and the male organs and the female sectors are delimited laterally by two lines converging on the center o of the ring and forming an angle of about 30 °.
• Each half-connector comprises two radial latches fixed to said sleeve, which are constituted by two coaxial cylindrical tenons which cooperate with two reserved holes in the clamping ring, each light having an oblique part, of which the end is located opposite to said male members and on the side of the longitudinal axis of the ring, and terminating on said axis, and another part perpendicular thereto which communicates with said oblique part, so that the locking or unlocking is effected by fraction of a turn by relative rotation of the tightening and sealing ring and of the connection sleeve.
• Said slots have at the end of their oblique part, a housing for receiving said radial locks of the sleeve in the "retracted" position in the ring.
• Said apertures comprise, at the junction of said parts which compose them, a recessed deviation with respect to the part of the ring which comprise said male members, in order to delimit the travel of said radial latches during the assembly of the half-fittings.
• connection is achieved by two O-rings each placed in a groove reserved for the external periphery of each of said connection sleeves and at their end.
• Said connecting sleeves of the half-fittings comprise at the end of their end which is placed in the junction plane of the sleeves, a circular groove reserved in the thickness of the sleeve and in which a seal is placed.
• the result of the invention is a fitting of tubes, in particular flexible tubing comprising two identical half-fittings, with manual tightening, which can be made complementary to one another by a simple and rapid operation, capable of being used for the transport of all liquids, whatever their aggressiveness and whose design ensures perfect sealing.
• Such fittings do not require the use of tools for. tighten them.
• - Figure 1 is a longitudinal sectional view of a connector according to the invention, the two half-connectors of which are in the assembled position;
• - Figure 2 is a front view along line II II of Figure 1 of the clamping ring of a half-connector illustrating in dashed lines the male female sectors of the ring of the half-connector complementary after assembly following an eighth of a turn;
• FIG. 3 is a top view of a sealing ring and its locking grid in two positions
• FIG. 4 is a sectional view of the sealing ring along line IV IV of Figure 3;
• connection sleeve which is placed in the joint plane of the sleeves of the two half-fittings
• FIGS. 6, 7, 8 are cross sections of the clamping ring along the lines VI VI, VII VII, VIII VIII;
• FIG. 9 is a partial sectional view of the connector illustrating another method of mounting the seals
• FIG. 10 is a perspective view of a connector according to the invention in another embodiment
• FIG. 11 is a half-view in longitudinal section / external half-view in elevation of the connector of the previous figure
• FIG. 12 is a half-view in longitudinal section / external half-view in elevation of a sleeve of the connector of FIGS. 10 and 11,
• FIG. 13 is an elevation view / partial section along line XIV XIV of FIG. 14, of a tightening and sealing ring,
• FIG. 14 is a view of the ring of the previous figure, along the arrow F,
• FIG. 15 is a partial sectional view along line XVI XVI ..
• the connector according to the invention ( Figure 1) consists of two identical half-connectors 1/2, each comprising three parts coaxial with the longitudinal axis XXi of the connector: a connection sleeve 11/21, a sealing ring 12 / 22 and a clamping ring 13 / 23- Said sleeves 11/21 are cylindrical of revolution and each of them has at its end which is placed in the junction plane of the sleeves, a groove lla / 21a of a straight section reserved in the edge of its wall, to receive a lip seal 3> When the two half-fittings are in the assembled position, the two lip seals are in contact with each other.
• only one sleeve can be fitted with a seal 3, which comes at the time of assembly on the edge of the smooth end of the sleeve of the other half-fitting.
• the sealing of the connector allows (tent) because of their elasticity, to favor the assembly of the two half-connectors at the time of the cooperation of the clamping rings and of their locking by fraction of a turn, such as this will be described later.
• Said sleeves comprise on the side of said end " where the groove lla / 21a is, a machined part llb / 22b which constitutes a cylindrical bearing surface on which O-ring seals are supported, which will be discussed later in the description of the sealing rings 12/22.
• the sleeve comprises a constriction llc / 21c, the end opposite to said range llb / 21b comprises peripheral grooves lld / 21d, which, in known manner, favor the holding of the flexible tube on the sleeve.
• a hose clamp can be placed around said tubes to ensure the sleeve / tube connection.
• Said necked llc / 21c of the sleeve 11/21 further comprises two radial lle / 21st locks coaxial, adopting the shape of two cylindrical pins, extending orthogonally to the sleeve 11/21 and in which they are implanted according to a known technique, by example by forced fitting, such pins can be obtained by molding.
• Each half-connection 1/2 comprises around said connection sleeve 11/21 a sealing ring 12/22, which ring has an internal diameter greater than the external diameter of the cylindrical seat llb / 21b, so that the sealing ring 12/22 can be moved in longitudinal translation and in rotation relative to the sleeve 11/21.
• the ring 12/22 has at its internal periphery two grooves 12a / 22a whose axes are located in two planes parallel to each other and at the edge of the ring and in which grooves are placed two O-rings 4 which tightly surround the sleeve 11/21 and which cooperate with the cylindrical part 11b thereof.
• a variant of the sealing means of the two half-fittings is illustrated in FIG. 9.
• each sleeve 11/21 has, near its end which is placed in the plane junction YYi, a groove llf / 21f reserved at its external periphery and in which is placed an O-ring 7 which cooperates with the bore 12g of the sealing ring 12.
• FIG. 9 requires only two O-rings 7 instead of the four 4 of the connector described with reference to FIG. 1.
• Said ring 12/22 comprises a constriction 12b / 22b forming a shoulder 12c / 22c, which constriction extends to the end of the ring, opposite to said shoulder 12c / 22c. It further comprises at a distance close to said end and at its external periphery a groove 12d / 22d in which is placed an elastic ring 5 which constitutes a stop abutment on which the locks lie, which makes the ring tightness 12/22 dependent on the connection sleeve 11/21.
• the sealing ring 12/22 also comprises in the wall of said constriction 12b / 22b, a locking grid 12e / 22e (FIG. 3) comprising two transverse notches of the same length 12ei, parallel to each other and which open into a longitudinal notch 12e2 which itself opens at the end of the ring where said stop ring 5 is mounted in said groove 12d.
• Said transverse notches 12e ⁇ are perpendicular to the axis of the longitudinal notch 12e2 and extend in opposite directions on either side of the plane in which are said axes of the longitudinal notches 12e2 and the longitudinal axis XXi of the connector.
• the width 1 of the notches is slightly greater than the diameter d of the cylindrical tenons linked to allow the displacement of said tenons in the notches.
• the distance e which separates the two transverse notches 12e ⁇ corresponds to twice the distance which separates the junction planes YYi in which the ends of the connection sleeves 11/21 and ZZi are placed in which the ends of the sealing rings 12 are placed / 22, the junction of said sleeves being made on one side or the other of the plane ZZi, depending on whether the latches lie are placed in the first or second notches relative to the shoulder 12c of the sealing ring.
• the locks binds from the sleeve 11 are placed in the first notches 12e of the sealing ring 12, while the locks 21e of the sleeve 21 are engaged in the second notches 22e of the ring 22.
• said junction plane YYi is located substantially in the middle of the space which separates the two O-rings 4 from the ring 22, the seal being produced by both the lip seals 3 and said O-rings 4.
• Each half-coupling 1/2 comprises around the sealing ring 12/22 a clamping ring 13/23, which adopts the general shape of a flange and is mounted to rotate around the sealing ring 12/22.
• each of said rings 13/23 comprises a male sector 13a / 23a and a female sector 13b / 23b diametrically opposite ( Figures 1 and 2).
• Said sectors extend over a quarter of circumference as illustrated in FIG. 2 and are separated by two circular recesses 13c thus interposed between said sectors and which, consequently, also extend over a quarter of circumference.
• Said recesses are therefore diametrically opposite and have the function of receiving the male sector 13a / 23a of the ring 13/23 of the complementary half-fitting, when the half-fittings 1/2 are joined together before their locking by fraction of a turn.
• Said recesses 13c (FIG. 7) are of a rectangular cross section and are bordered by a cylindrical wall 13ci and a bottom wall 13c2 perpendicular to the wall 13ci.
• Said clamping rings 13/23 comprise an internal peripheral stop 13d / 23d constituted by a short circular wall which is located near the shoulder 12c of the sealing ring 12, the axial displacement of the rings 12 / 22-13 / 23 being limited by an elastic ring 6 placed in a groove 12f / 22f reserved for the external periphery of said sealing ring 12/22 ( Figure 1).
• the clamping and sealing rings 12 / 13-22 / 23 are made dependent in longitudinal translation and independent in relative rotation, the stop 13d / 23d being inserted between the shoulder 12c and the rod 6.
• the ring 13/23 further comprises an extension constituted by a cylindrical wall 13e which partially covers the sealing ring 12 and which delimits a space between the two rings 13 / 22-12 / 22 where the elastic ring 6 is located in particular
• the male sector 13a / 23a is constituted by a strong wall of thickness ei (FIG. 6) comprising a bulge 13ai at its end, which overflows on one side of said wall to form an internal clamping ramp 13 2 which extends on the quarter circumference of the male sector 13a.
• the female sector 13b / 23b comprises a circular groove of a rectangular cross section 13bl formed in the thickness of the ring 13/23, which groove is partially closed by a flange 13b2 which forms an internal clamping ramp 13b3 intended to cooperate with said internal ramp 132 of the clamping ring of the other half-connector, which ramp 13b3 extends over the quarter of circumference of the female sector 13b.
• the width e2 of the light 13b into which the male sector 13a engages is slightly greater than the thickness ei of the wall of said male sector to allow relative movement of the male sector / female sector.
• said fitting consists of two 10/20 half-fittings each comprising two parts coaxial with the longitudinal axis XXi of the fitting: a connection sleeve 110/210 and a tightening and sealing ring 130/230 .
• Said sleeves 110/210 are similar or even identical to those 11/21 of the embodiment described above. They comprise a cylindrical tubular part of revolution 110a extended by a cylindrical constriction 110b with peripheral grooves to receive the tube to be connected. The end of the cylindrical part 110a opposite said constricted 110b, has a groove 110c / 210c at its periphery in which is placed a seal 70, for example an O-ring.
• Said cylindrical part 110a also comprises two radial locks 110d / 210d coaxial which take the form of two cylindrical tenons extending orthogonally to the sleeve 110/210.
• said tenons are constituted by two cylindrical screws with a hexagon socket.
• Each of said 10/20 half-fittings comprises around said sleeves 110/210 a tightening and sealing ring 130/230, which ring has an internal diameter slightly greater than the external diameter of the cylindrical part 110a / 210a of the sleeve, so that said ring can be moved in longitudinal translation and in rotation relative to said sleeve 110/210.
• Said ring 130/230 adopts the general shape of a flange and comprises two male members 130a / 230a diametrically opposite and two clamping ramps 130b / 230b also diametrically opposite and arranged at 90 ° to said male members.
• Said ramps 130b / 230b delimit a groove section 130c / 230c into which the male members of the opposite flange which composes the fitting penetrate.
• said male members 130a / 230a of a half-connector 10 cooperate with said clamping ramps 130b / 230b of the ring of the other half-connector 20.
• Said ramps 130b / 230b may have an extra thickness at their median part originating at the ends of the ramps and progressing up to said part to intimately apply the two rings 130/230 during the junction of the 10/20 half-fittings.
• Each ring 130/230 further comprises on either side of said male members 130a / 230a and said clamping ramps
• clamping ramps extend over approximately a quarter of circumference and are delimited by lines 130e / 130f which converge on the center o of the ring and which form an angle ⁇ of the order of 90 °.
• the male organs 130a / 230a extend over a twelfth of a circumference and are delimited by two lines 130g / 130h which ' converge on the center o of the ring and which form an angle ⁇ i of the order of 30 °. It is the same for the female sectors 130c, which are delimited by converging lines 130e / 130g which form an angle fS2>
• the clamping and sealing ring 130/230 of each 10/20 half-coupling has an extension constituted by a cylindrical wall 130d / 230d, in which a locking lumen 130k / 230k is formed which cooperates with said cylindrical studs 110d / 210d of sleeve 110/210.
• Each of these 130k / 230k lights has an oblique part
• Said lights further comprise at the end 130k a / 230k ⁇ a of their oblique part, a housing for receiving said radial locks 110 / 210d making it possible to put the sleeve of a half-connector in the "retracted" position in the ring 130/230 .
• the length of the oblique part 130k ⁇ / 230k ⁇ is suitable for put the sleeve as described above, in the "out" position, as already explained during the description of the previous embodiment.
• Said 130k / 230k lights finally comprise, at the junction of said parts 130k ⁇ / 230k ⁇ ⁇ 130k2 / 230k2, a recessed deviation 130k3 / 230k3 relative to the part of the ring which comprises said male organs 130a / 230a to delimit the travel of said radial locks 110d / 210d during the assembly of the 10/20 half-fittings and their locking.
• the junction of the two connection sleeves 11/21 can be carried out either inside one or the other half-connector 1 / 2 - 10/20.

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

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Family Applications (1)

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Citations (3)

• 1992
  • 1992-02-21 FR FR9202423A patent/FR2687755B1/fr not_active Expired - Lifetime
  • 1992-09-23 WO PCT/FR1992/000882 patent/WO1993017271A1/fr not_active Application Discontinuation
  • 1992-09-23 CA CA 2130328 patent/CA2130328A1/fr not_active Abandoned
  • 1992-09-23 EP EP92921323A patent/EP0627058A1/fr not_active Withdrawn
  • 1992-09-23 JP JP5514572A patent/JPH07504019A/ja active Pending

Patent Citations (3)

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