CA2272016A1 - Conduit - Google Patents

Conduit Download PDF

Info

Publication number
CA2272016A1
CA2272016A1 CA 2272016 CA2272016A CA2272016A1 CA 2272016 A1 CA2272016 A1 CA 2272016A1 CA 2272016 CA2272016 CA 2272016 CA 2272016 A CA2272016 A CA 2272016A CA 2272016 A1 CA2272016 A1 CA 2272016A1
Authority
CA
Canada
Prior art keywords
conduit
plug
receptacle
safety
seal element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
CA 2272016
Other languages
French (fr)
Inventor
Joachim Geimer
Reiner Forthner
Roland Zahn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Veritas AG
Original Assignee
Veritas AG
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 Veritas AG filed Critical Veritas AG
Publication of CA2272016A1 publication Critical patent/CA2272016A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00Couplings of the quick-acting type
    • F16L37/08Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
    • F16L37/12Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members using hooks, pawls or other movable or insertable locking members
    • F16L37/14Joints secured by inserting between mating surfaces an element, e.g. a piece of wire, a pin, a chain
    • F16L37/142Joints secured by inserting between mating surfaces an element, e.g. a piece of wire, a pin, a chain where the securing element is inserted tangentially
    • F16L37/144Joints secured by inserting between mating surfaces an element, e.g. a piece of wire, a pin, a chain where the securing element is inserted tangentially the securing element being U-shaped

Landscapes

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

Abstract

A conduit preferably a hydraulic conduit, comprising a plug which for connecting the conduit to a conduit connection, preferably a hydraulic connection is insertable in a plug-direction substantially parallel to the longitudinal extension of the conduit into a receptacle of the conduit connection, comprising a seal element for sealing the receptacle against the conduit in inserted condition of the plug, and comprising a support face at the plug by means of which the inserted plug can be secured opposite the plug-in direction at a safety element of the receptacle in a manner supported against being pulled out, with the support face being arranged in the plug-in direction behind the seal element. To facilitate the manufacture of conduits of that kind, it is provided according to the invention that the plug is displaceably attached on the conduit and the seal element is directly attched on the conduit, and that a support means for supporting the plug in the plug-in direction which is fixedly connected to the conduit is provided between the seal element and the plug.

Description

Conduit Description The present invention relates to a conduit, preferably for hydraulic ducts, comprising a plug, which is insertable in a plug-in direction substantially parallel to the longitudinal extension of the conduit into a receptacle of a conduit connection, preferably a hydraulic connection, for connecting the conduit to the conduit connection, comprising a sealing element for sealing the receptacle against the conduit in plugged-in condition, and comprising a support surface at the plug by means of which the plugged-in plug can be secured against being pulled-out in a manner supported opposite the plug-in direction at a safety element of the receptacle, wherein the support surface is arranged in the plug-in direction downstream the sealing element.
A conduit of that kind is known from the prior art. The conduit and the plug are made of steel and are soldered together at a transition portion. The plug is substantially cylindrical and has a circumferential groove in which the sealing element is accommodated. To connect the conduit to the conduit terminal) the conduit is plugged by the plug into the receptacle of the conduit terminal in the plug-in direction.
After insertion, a safety clip is attached, through which a positive fit between the receptacle and the support surface of the plug is established. In this way it can be prevented that the plug is accidentally pulled out. In the plug-in direction, the plug supports itself at the receptacle. By this the plug and the conduit are axially secured in the receptacle.
It proves to be a disadvantage in conduits of this kind that the plug is soldered to the conduit. Thus, the conduit and the plug must be made of the same material. Due to the manufacturing cycle the conduit must be provided with a surface coating after the soldering process, since an already existing coating of the tube would be destroyed by the soldering process. Hence, the number of method steps necessary to manufacture the conduit with the plug is increased. Thus, the manufacturing costs also rise. The selection of material for the conduit and the plug is also severely limited because of the soldering process.
Thus, it is the object of the invention to develop a conduit of the above-mentioned kind in a manner that the soldering process can be eliminated and conduits with surface coatings can also be used. At the same time the manufacture of the conduit with the plug shall be severely simplified.
The object is solved in a conduit of the above-mentioned kind according to the invention in that the plug is displaceably attached at the conduit and the sealing element is attached directly on the conduit, and that a support means is provided between the sealing element and the plug which is fixedly connected to the conduit for supporting the plug at the conduit in the plug-in direction.
This solution is simple and has the advantage that a soldering process between the plug and the conduit is no longer necessary. Instead, the plug is displaceably mounted at the conduit. Thereby, the plug and the conduit can be made of different materials. Tubes already coated may also be used.
The fact that the sealing is directly mounted at the conduit ensures a sealing between the conduit and the receptacle despite the plug being displaceably supported on the conduit.
The conduit according to the invention can be manufactured in an inexpensive manner because of the small number of working steps.- Moreover, the plug may be made of a material that is especially easy to be processed.
In an advantageous development of the invention, the conduit may be provided as a steel tube. Then the conduit may in particular be used as a hydraulic duct.
It may also be advantageous if the plug is made of a material different to that of the conduit. Then the plug and the conduit can be optimized in terms of material selection in order to meet the demands.
It may be an advantage if the plug is made of plastics.
Plastics is especially easy to process and enables an especially inexpensive manufacture of the plugs. Complicated shapes of the plug can also be realized in simple manner.
In an advantageous development, the support means may be formed by a support ring annularly extending around the circumference of the conduit. Then an especially even abutment of the plug at the support means can be realized.
In an advantageous embodiment, the support ring may be formed by an annularly surrounding bead of the steel tube. Then the support ring can be formed integrally with the steel rube and it can be produced when manufacturing the steel tube. The bead is manufactured by upsetting the end piece of the steel tube so that an annular bead is created.
Moreover, a second bead may be provided and the seal element may be arranged between the two beads. Thereby a simultaneous guide of the seal element in the axial direction is possible.
It may be an advantage if the seal element is an 0-ring, wherein the outer diameter of the 0-ring at least in the unplugged condition of the plug is larger than the outer diameter of the bead. It is ensured thereby that the 0-ring develops its sealing effect when the plug is plugged-in.
In an advantageous embodiment of the invention, the support face of the plug may be formed by a preferably groove-shaped safety receptacle, into which the safety element is insertable preferably perpendicular to the plug-in direction. In this manner the plug can be positively secured in the receptacle in the axial direction, in the plug-in direction, and opposite the plug-in direction.
It may be an advantage if the safety element is provided as a safety clip, which is insertable into the safety receptacle of the plug through an opening in the receptacle, in order to achieve a positive fit between the receptacle, the safety clip and the plug. In this manner a safe, easy to be mounted fit of the plug in the receptacle can be realized.
In an advantageous development of the invention the plug may essentially be cylindrical. Then the plug can be manufactured in an especially simple manner.
Moreover, the plug may have a guide section, the outer diameter of which substantially corresponds at least section-wise to the inner diameter of the receptacle. Thereby a radial guide of the plug in the receptacle can be realized.
It may be an advantage if the guide section is arranged close to the support ring, between the support face and the support ring. Then the plug can be plugged into the receptacle more easily.
Moreover, a coupling is claimed according to the invention for connecting a conduit with a conduit connection, comprising a receptacle arranged in the conduit connection for plugging in the conduit comprising a plug, and having a safety element for securing the plug with the conduit against being pulled out of the receptacle, characterized by a conduit according to one of claims 1 to 12.
The effect and function of the invention will now be described by means of an embodiment.
Fig. 1 shows a conduit of the prior art in a sectional view;

S
Fig. 2 is a sectional view of the conduit of the prior art along the line II-II of Fig. 1;
Fig. 3 shows the conduit according to the invention in a sectional view.
The conduit 1 of the prior art is composed of a tube 2 made of steel and a plug 3 also made of steel by means of a machining process. The tube 2 and the plug 3 are soldered together at the solder location 4.
For this purpose, the plug 3 has a recess 5, the inner diameter of which substantially corresponds to the outer diameter of the tube 2 and into which the tube 2 is partially inserted, as may be derived from Fig. 1. A passage bore 6 is provided in the plug 3, said passage bore opening into the tube 2.
The plug 3 has a seal groove 7 extending along the circumference of the plug 3 and receiving an 0-ring 8.
Moreover, the plug 3 has a safety groove 9 extending along the circumference, said safety groove having a support face 10.
The support face 10 forms the wall of the safety groove 9.
In the view according to Fig. 1, the conduit is shown with a partially schematically shown conduit connection 11 in a condition plugged-in in the insertion direction E. The conduit connection il has a housing 12 with a receptacle 13 into which the plug in insertable in the insertion direction E. The housing 12 has a through bore 14 which opens into the through bore 6 or is in alignment therewith.
Two openings 15 formed as insertion slots are provided at the housing 12, with a safety element being insertable into the openings perpendicularly to the longitudinal extension of the conduit. The safety element is provided as a safety clip 16 which is resilient and has two bent arms 17 encompassing the safety groove 9. The safety clip 16 can be removed from the r~..

housing 12 through the opening 15 or it can be inserted thereinto. In the plugged-in condition of the safety clip the plug 3 is defined in the housing in the axial direction of the conduit.
The conduit according to the invention will now be explained in comparison with the conduit of the prior art. Identical components are defined by identical reference numerals.
In Fig, 3 the Conduit is also shown in a condition plugged into the conduit terminal 11. Contrary to the conduit of the prior art, the plug 3 is, however, supported on the tube 2 in an axially displaceable manner.
The tube 2 is also made of steel and is provided with two beads 18 and 19. Between the beads, the 0-ring 8 is no longer arranged in a seal groove 7 of the plug 3, but it is directly arranged on the tube and thereby fulfills a sealing function between the receptacle 13 of the housing 12 and the tube 2.
The receptacle 13 is dimensioned such that the conduit is insertable and a very small tolerance exists after insertion.
The plug 3 is no longer made of steel but of plastics and has a safety groove 9 with a support face 10. Analogously to the conduit of the prior art, the housing 12 also has two openings 15 into which a safety clip 16 can be inserted that engages a safety groove 9 and thereby fixes the plug in the axial direction. The safety hold is realized in a positive manner between the housing 12 and the plug 3. The support face 10 defines the conduit with the plug 3 opposite to the insertion direction E, since the support face 10 is supported at the safety clip 16. The through bore 6 of the plug 3 accommodates the tube 2. The bead 18 arranged between the 0-ring and the plug 3 forms a support ring at which the tube 2 is supported at the plug 3 opposite the insertion direction E.

Moreover, the plug 3 comprises a guide section 20, the outer diameter of which basically corresponds to the inner diameter of the receptacle 13. This leads to a radial guide of the conduit.
In the non-inserted condition of the conduit, the outer diameter of the 0-ring 8 is larger than the inner diameter of the beads 18 and 19.
The conduit 1 with the plug 3 along with the conduit connection 11 forms a coupling 21. In the present embodiment, the conduit 1 is a hydraulic conduit and the conduit connection 11 is a hydraulic connection of for instance a hydraulic cylinder or the like. The tube 2 does not have to be a completely rigid tube. A flexible tube may also be used. The tube may also be solid in the area of the plug and it may be connected to a hose or the like. The coupling according to the invention is not only used for connecting the conduit with a conduit connection, it can also be used for joining for instance two conduits. The connection member of the one conduit may then be provided with a receptacle 13 similar to the housing 12 and the other conduit may be formed as the conduit according to the invention. In case of an arrangement with two opposing receptacles 13, two conduits according to the invention may also be joined.
The effect and function of the invention will now be explained in detail.
For coupling the conduit 1 with a conduit connection 11, the tube 2 with the plug 3 and the 0-ring arranged before between the two beads 18 and 19 is inserted into the receptacle 13 of the housing 12 of the conduit connection 11 in the insertion direction E. Subsequently, the safety clip 16 is inserted through the opening 15 in the housing perpendicular to the longitudinal extension of the tube 2, wherein the two arms 17 are resiliently diverged through the bottom of the safety groove 9 until they reach a position corresponding to the position shown in Fig. 2. As an alternative, the clip may already be plugged into the opening 15 in the housing 12, since the taper at the plug is capable of resiliently expanding the clip when inserting the tube with the plug. The clip latches when fully plugging-in the plug into the groove.
Caused by the safety groove 9, the plug 3 is defined in the axial direction as well as in the plug-in direction, and opposite the plug-in direction E. Because of the bead 18 the tube 2 cannot be pulled out of the plug 3.
The conduit according to the invention make it possible to use previously coated tubes which are already provided with the beads 18 and 19. The plug made of plastics, can be manufactured separately and may be mounted onto the tube 2.
Thereby, soldering processes or the like for joining tube and plug are avoided.

Claims (13)

1. A conduit, preferably a hydraulic conduit, comprising a plug (3) which for connecting the conduit to a conduit connection, preferably a hydraulic connection is insertable in a plug-in direction substantially parallel to the longitudinal extension of the conduit (1) into a receptacle (13) of the conduit connection (11), comprising a seal element (8) for sealing the receptacle (13) against the conduit (1) in inserted condition of the plug, and comprising a support face (10) at the plug by means of which the inserted plug can be secured opposite the plug-in direction at a safety element (15) of the receptacle in a manner supported against being pulled out, with the support face being arranged in the plug-in direction behind the seal element, characterized in that the plug is arranged in a manner displaceable on the conduit and the seal element is attached directly on the conduit and that a support means (18) fixedly connected to the conduit between the seal element and the plug is provided for supporting the plug on the conduit in the plug-in direction.
2. A conduit as claimed in claim 1, characterized in that the plug is made of a material different to the material of the conduit.
3. A conduit as claimed in claims 1 or 2, characterized in that the plug is made of plastics.
4. A conduit as claimed in one of the preceding claims, characterized in that the support means is formed by a support ring (18) extending annularly along the circumference of the conduit.
5. A conduit as claimed in one of the preceding claims, characterized in that the support ring is formed by an annularly extending bead (18) of the steel tube.
6. A conduit as claimed in one of the preceding claims, characterized in that a second bead (19) is provided and that the seal element (8) is arranged between the two beads.
7. A conduit as claimed in one of the preceding claims, characterized in that the seal element is an O-ring (8), with the outer diameter of the O-ring at least in the non-inserted condition of the plug being larger than the outer circumferential diameter of the bead.
8. A conduit as claimed in one of the preceding claims, characterized in that the support face of the plug is formed by preferably groove-shaped safety receptacles (9) into which the safety element is insertable preferably perpendicularly to the insertion direction.
9. A conduit as claimed in one of the preceding claims, characterized in that the safety element is formed as a safety clip (16), which is insertable into the safety receptacle of the plug through an opening (15) in the receptacle, in order to achieve a positive fit between the receptacle, the safety element and the plug.
10. A conduit as claimed in one of the preceding claims, characterized in that the plug is substantially cylindrical.
11. A conduit as claimed in one of the preceding claims, characterized in that the plug has a guide section (20) the outer diameter of which at least in portions substantially corresponds to the inner diameter of the receptacle.
12. A conduit as claimed in one of the preceding claims, characterized in that the guide section is arranged close to the support ring between the support face and the support ring.
13. A coupling for connecting a conduit with a conduit connection, comprising a receptacle (13) arranged within the conduit connection for plugging-in a conduit having a plug, and comprising a safety element for securing the plug and the conduit against being pulled out of the receptacle, characterized by a conduit according to one of claims 1 to 12.
CA 2272016 1998-05-20 1999-05-17 Conduit Abandoned CA2272016A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1998122753 DE19822753A1 (en) 1998-05-20 1998-05-20 Pipeline
DE19822753.1 1998-05-20

Publications (1)

Publication Number Publication Date
CA2272016A1 true CA2272016A1 (en) 1999-11-20

Family

ID=7868488

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2272016 Abandoned CA2272016A1 (en) 1998-05-20 1999-05-17 Conduit

Country Status (4)

Country Link
EP (1) EP0959291A3 (en)
BR (1) BR9901554A (en)
CA (1) CA2272016A1 (en)
DE (1) DE19822753A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7614666B2 (en) 2005-03-10 2009-11-10 Fte Automotive Gmbh End section of a fluid line with molded-on push-in fitting
US7631904B2 (en) * 2004-09-14 2009-12-15 Fte Automotive Gmbh Releasable plug-in connection for pipelines or the like

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005050490A1 (en) * 2005-10-21 2007-04-26 Henn Gmbh & Co. Kg Plug connection on pipes and hoses with a pipe locking ring
FR3001024B1 (en) * 2013-01-17 2015-12-25 Delphi Automotive Systems Lux FAST CONNECTION DEVICE.
DE102014214186A1 (en) * 2014-07-22 2016-01-28 Schaeffler Technologies AG & Co. KG connecting device
CN109029622B (en) * 2018-05-28 2020-10-02 佛山市川东磁电股份有限公司 Connection structure of automobile-used urea level sensor and joint
CN110216920A (en) * 2019-06-18 2019-09-10 安徽猛牛彩印包装有限公司 A kind of dissection waste material storage high-efficient treatment device on Bag Making Machine
DE102022114275A1 (en) 2022-06-07 2023-12-07 Valeo Powertrain Gmbh Sensor and sensor assembly

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2028712A1 (en) * 1970-06-11 1971-12-16 Kessler & Co Tech Chem Gmbh Detachable pipe or hose coupling
DE3531926A1 (en) * 1985-09-07 1987-03-19 Kugelfischer G Schaefer & Co DETACHABLE CONNECTOR
US4874174A (en) * 1987-03-05 1989-10-17 Aisin Seiki Kabushiki Kaisha Tube connecting unit
US5275448A (en) * 1991-09-10 1994-01-04 Huron Products Industries, Inc. Quick connect tubing connector and method of assembly

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7631904B2 (en) * 2004-09-14 2009-12-15 Fte Automotive Gmbh Releasable plug-in connection for pipelines or the like
US7614666B2 (en) 2005-03-10 2009-11-10 Fte Automotive Gmbh End section of a fluid line with molded-on push-in fitting

Also Published As

Publication number Publication date
EP0959291A3 (en) 1999-12-15
DE19822753A1 (en) 1999-12-02
BR9901554A (en) 2000-02-22
EP0959291A2 (en) 1999-11-24

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