GB2257764A - Clamping device for hose and pipe connector - Google Patents

Clamping device for hose and pipe connector Download PDF

Info

Publication number
GB2257764A
GB2257764A GB9208789A GB9208789A GB2257764A GB 2257764 A GB2257764 A GB 2257764A GB 9208789 A GB9208789 A GB 9208789A GB 9208789 A GB9208789 A GB 9208789A GB 2257764 A GB2257764 A GB 2257764A
Authority
GB
United Kingdom
Prior art keywords
projection
tubular member
ring
clamping
positioning
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.)
Granted
Application number
GB9208789A
Other versions
GB9208789D0 (en
GB2257764B (en
Inventor
Cesare Mogavero
Celestino Devietti
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.)
SAIAG Industria SpA
Original Assignee
SAIAG Industria SpA
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 SAIAG Industria SpA filed Critical SAIAG Industria SpA
Publication of GB9208789D0 publication Critical patent/GB9208789D0/en
Publication of GB2257764A publication Critical patent/GB2257764A/en
Application granted granted Critical
Publication of GB2257764B publication Critical patent/GB2257764B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • 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
    • F16L33/225—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 a sleeve being movable axially
    • 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
    • F16L37/12—Couplings 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
    • F16L37/138—Couplings 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 using an axially movable sleeve

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Clamps And Clips (AREA)
  • Joints That Cut Off Fluids, And Hose Joints (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Supports For Pipes And Cables (AREA)

Abstract

A connector comprises an outer retaining projection (4) provided on a tubular connector (2) and an elastically expansible clamping ring (A) comprising an inner hooked projection (7) and an inner clamping projection (8) axially spaced from each other. These projections (7, 8) are formed in such a manner that the ring (A), after having been threaded over the tube (1), may be forcedly slid back onto that portion of the tube (1) fitted onto the tubular member (2) until the hooked projection (7) interferes with and rides over the retaining projection (4) and the clamping projection (8) lies between two adjacent circumferential projections (3) of the tubular member (2). The connector may join an engine coolant hose to a radiator. <IMAGE>

Description

FLUID-TIGHT CLAMPING DEVICE FOR CLAMPING A FLEXIBLE TUBE FORCE FITTED ONTO A TUBULAR CONNECTOR The present invention relates to a device for the fluidtight clamping of a flexible tube, for example a tube of elastomeric material, force fitted onto a tubular member such as a union, of substantially more rigid material and having a plurality of adjacent, external circumferential end projections.
The clamping device according to the invention is characterised in that it includes at least one retaining and positioning projection formed on the outside of the tubular member beyond the circumferential projections in the direction in which the flexible tube is fitted onto the tubular member, and a clamping ring which can be threaded onto the flexible tube and has an inner hooked projection and an inner clamping projection axially spaced from each other and formed in such a manner that the ring can be forcedly slid onto that portion of the tube fitted onto the tubular member until the hooked projection interferes with and rides over the positioning and retaining projection of the tubular member and the clamping projection lies between the two adjacent circumferential projections of the tubular member.
According to a further characteristic, the positioning and retaining projection of the tubular member has a surface with a profile inclined towards the end circumferential projections and the inner hooked projection of the clamping ring has a corresponding surface with an inclined lead-in profile for coupling with and sliding forcibly over on the inclined surface of the positioning and retaining projection until it has ridden over it.
Further characteristics and advantages of the invention will become apparent from the detailed description which follows, given with reference to the appended drawings, provided purely by way of non-limiting example, in which: Figure 1 is a perspective view of a fluid-tight sealing device according to the invention for the connection of a flexible tube with a tubular union; Figure 2 is an axial section of the flexible tube, the union and an associated clamping ring shown in their uncoupled condition, and Figure 3 is a section similar to that of Figure 2, showing the flexible tube fitted onto the union and clamped thereto by means of the device of the invention.
With reference to the drawings, a flexible tube, for example a tube of elastomeric material with or without an internal textile reinforcement, is indicated 1. This off-cut of flexible tube is to be connected to one end of a tubular connecting member such as a union, generally indicated 2. This connector is of substantially rigid material and has a plurality of external circumferential projections 3 adjacent its end. In the embodiment illustrated, these projections have saw-tooth profiles.
Conveniently, in a manner known per se, the tube 1 has an inner diameter which is slightly less than the outer diameter of the projections 3 of the union 2 so that the tube 1 must be force fitted over these projections.
Reference 4 in the drawings indicates a retaining and positioning projection provided on the outside of the tubular union 2 beyond the circumferential projections 3.
Conveniently, but not necessarily, this projection extends around the entire circumference of the union 2 and has an inclined surface in profile, more particularly a surface in the form of a conic frustum indicated 4a which is inclined towards the circumferential end projections 3.
An intermediate portion 5 of the outer surface of the union 2 between the retaining and positioning projection 4 and the end projections 3 forms a radial, annular shoulder 6. The end of the flexible tube 1 comes to bear against this shoulder when the tube 1 is force fitted over the end projections 3 of the union.
In order to clamp the flexible tube 1 to the union 2 with a fluid-tight seal, a clamping ring indicated A is used in accordance with the invention.
As best seen in Figures 2 and 3, the ring A has an internal hooked projection 7 and an internal clamping projection 8 which are axially spaced apart.
The clamping projection 8 of the ring has an inner diameter which is preferably slightly less than or equal to nominal outer diameter of the flexible tube 1.
The inner diameter of the hooked projection 7 is, on the other hand, preferably greater than the nominal outer.
-diameter of the said tube.
Consequently, the ring A can easily be threaded on to the end of the tube 1 before this is force fitted on to the connector or union 2.
Once the ring A has been threaded on to the tube 1, the end of the latter is force fitted onto the union, and then the ring A is forcedly slid over the tube 1 towards the retaining projection 4 of the union. This operation is preferably not carried out manually but with the aid of a tool or mechanical device.
As seen in Figure 2, the hooked projection 7 of the ring A has a lead-in surface 7a which faces outwardly, its profile being inclined like the profile of the surface 4a of the retaining projection 4 of the union 2. The inner diameter of the projection 7 of the ring A is less than the outer diameter of the retaining projection 4 of the union.
When the ring A is forcedly slid over the tube 1 fitted onto the union 2, the frusto-conical lead-in surface 7a of the hooked projection first contacts the surface 4a of the retaining projection of the union. As the ring A is thrust further in the direction of the projection 4 of the union, that portion of the ring A formed with the hooked projection 7 expands elastically so as to ride over the projection 4 of the union to reach the hooked position shown in Figure 3. Once it has passed this projection, the resilient contraction of that portion of the ring A which had previously expanded forms a substantially irreversible engagement of this ring with the projection or flange 4 of the union.
The axial distance between the projections 7 and 8 of the ring A is suitably such that, in the coupled condition shown in Figure 3, the projection 8 compresses and grips a zone of the wall of the flexible tube 1 between the crests of two adjacent circumferential projections 3 of the union. This ensures highly reliable fluid-tight clamping.
The union connector 2 illustrated in the drawings may, for example, be the inlet connector or the outlet connector for a radiator of a motor vehicle having an internal combustion engine, the flexible tube 1 being for example, a hydraulic pipeline of the water cooling system of the internal combustion engine.
The device according to the invention is not only suitable for use in the case just illustrated, however, but is also usable in all those circumstances in which hose-clips are conventionally used.
The invention naturally extends to all embodiments which achieve equal utility by means of the same inovative concept.
Thus, for example, one or other or both of the projections 4 and 7 need not extend around the entire circumference of the ring and the union respectively but only around (one or more) sectors thereof.

Claims (9)

1. A fluid-tight clamping device for a flexible tube (1) force fitted onto a substantially rigid tubular member (2) - such as a union - and having a plurality of adjacent external circumferential end projections (3); characterised in that it includes at least one retaining and positioning projection (4) formed on the outside of the tubular member (2) beyond the circumferential projections (3), and a clamping ring (A) which is elastically expansible and can be threaded onto the flexible tube (1) and has an inner hooked projection (7) and an inner clamping projection (8) axially spaced from each other and formed in such a manner that the ring (A) can be forcedly slid onto that portion of the tube (1) fitted onto the tubular member (2) in the direction of the tubular member (2) until the hooked projection (7) interferes with and rides over the positioning and retaining projection (4) of the tubular member (2) and the clamping projection (8) lies between the two adjacent circumferential projections (3) of the tubular member (2).
2. A device according to Claim 1, characterised in that the positioning and retaining projection (4) of the tubular member (2) has a surface (4a) with a profile inclined towards the circumferential projections (3) and in that the inner hooked projection (7) of the clamping ring (A) has a corresponding lead-in surface (7a) with an inclined profile for coupling with and sliding forcibly over the inclined surface (7a) of the positioning and retaining projection (7) so that the ring (A) expands elastically and the hooked projection (7) rides over the positioning and retaining projection (4).
3. A device according to any one of the preceding claims, characterised in that the positioning and retaining projection (4) is constituted by a circumferential flange of the tubular member (2).
4. A device according to any one of the preceding claims, characterised in that the inner hooked projection (7) of the clamping ring (A) extends around the entire inner circumference of the ring (A).
5. A device according to any one of the preceding claims, characterised in that the inner clamping projection (8) of the ring (A) extends around the entire inner circumference of the ring (A).
6. A device according to any one of the preceding Claims, characterised in that the end circumferential projections (3) of the tubular member (2) have saw-tooth profiles.
7. A device according to any one of the preceding claims, characterised in that the inner clamping projection (8) of the ring (A) has a rounded profile.
8. Adevice according to any one of the preceding claims, characterised in that the tubular member (2) has a stop shoulder (6) between the retaining and positioning projection (4) and the end circumferential projections (3) for abutec by the end of the flexible tube (1).
9. A fluid-tight clamping device substantially as hereinbefore described and as shown in the accompanying drawings.
GB9208789A 1991-07-17 1992-04-23 Fluid-tight joint Expired - Fee Related GB2257764B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000175 IT223227Z2 (en) 1991-07-17 1991-07-17 SEALING TIGHTENING DEVICE OF A FLEXIBLE FLEXIBLE HOSE ON A TUBULAR AGREEMENT.

Publications (3)

Publication Number Publication Date
GB9208789D0 GB9208789D0 (en) 1992-06-10
GB2257764A true GB2257764A (en) 1993-01-20
GB2257764B GB2257764B (en) 1995-02-08

Family

ID=11409058

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9208789A Expired - Fee Related GB2257764B (en) 1991-07-17 1992-04-23 Fluid-tight joint

Country Status (5)

Country Link
JP (1) JPH05126288A (en)
ES (1) ES1021210Y (en)
FR (1) FR2679313B1 (en)
GB (1) GB2257764B (en)
IT (1) IT223227Z2 (en)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996037254A2 (en) * 1995-05-24 1996-11-28 C.R. Bard, Inc. Multiple-type catheter connection system
US5637102A (en) * 1995-05-24 1997-06-10 C. R. Bard, Inc. Dual-type catheter connection system
DE19858396A1 (en) * 1998-12-17 2000-07-06 Duerr Systems Gmbh Hose connection nipple clamped to hose uses expanded cone part of nipple to mate with hose sleeve part forming catch hook and groove.
DE19932718A1 (en) * 1999-09-23 2001-05-23 Friatec Ag Plug-in coupling for connecting two pipe ends; has base body, sealing ring and prestressed locking ring, where pipe end fits in gap between base body and annular body and is sealed with locking ring
AU742795B2 (en) * 1995-07-14 2002-01-10 Hansen Developments Limited A pipe coupling
EP1055860A3 (en) * 1999-05-26 2002-05-29 McKECHNIE ENGINEERED PLASTICS LIMITED Improvements in or relating to pipe joints
WO2004002555A1 (en) * 2002-06-26 2004-01-08 C.R. Bard, Inc. Connector for catheter attachment to an implantable pump
WO2004046604A1 (en) * 2002-11-21 2004-06-03 Poloplast Gmbh & Co. Kg Universal hose coupling
US6773039B2 (en) 1999-06-04 2004-08-10 Friatec Aktiengesellschaft Plug-in coupling
EP1561987A1 (en) * 2004-02-05 2005-08-10 Bio Pure Technology Limited Tube connector
US6971390B1 (en) 2002-02-05 2005-12-06 C. R. Bard, Inc. Catheter connection and repair system
EP2775187A3 (en) * 2013-03-07 2014-10-29 Grohe AG Device for a hose fitting
TWI486534B (en) * 2012-05-11 2015-06-01 Higashio Mech Co Ltd Pipe joint
EP2211976B1 (en) 2007-10-30 2016-03-30 Medela Holding AG Device for connecting a suction hose
FR3059077A1 (en) * 2016-11-21 2018-05-25 Avon Automotive Uk Holdings Limited SYSTEM FOR CONNECTING A FLEXIBLE PIPE
CN113767243A (en) * 2019-03-10 2021-12-07 麦克尓联合公司 Pipe connector, assembly and method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5878143B2 (en) * 2013-05-08 2016-03-08 日本ピラー工業株式会社 Synthetic resin pipe fittings
JP6240455B2 (en) 2013-10-01 2017-11-29 日本ピラー工業株式会社 Synthetic resin pipe fittings

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2165909A (en) * 1984-10-22 1986-04-23 Earls Supply Co Fitting assembly for reinforced hose

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2149136A1 (en) * 1970-10-09 1972-04-13 Gervasio Vernetti Hose and pipe connectors for hoses and pipes made of deformable material
FR2420711A1 (en) * 1978-03-23 1979-10-19 Berthoud Sa Sliding sleeve for wedging flexible hose on spigot - has radial step between bore lengths of different dia. and acts with conical spigot head
IT1195214B (en) * 1981-10-14 1988-10-12 Giovanni Fassina QUICK JOINT FOR ELASTOMER PIPES INTENDED FOR THE TRANSPORT OF FLUIDS (GAS, LIQUIDS, POWDERS OR GRANULATES) IN PARTICULAR FOR HOUSEHOLD APPLIANCES, BOTH IN CONNECTION WITH THEM AND IN COUPLING WITH CONNECTIONS OR DIRECTLY WITH THE APPLIANCE
US4564222A (en) * 1984-08-27 1986-01-14 Hydrasearch Co., Inc. Separable coupling for thin-walled flexible hose
GB2227803B (en) * 1989-01-10 1993-03-24 Titeflex Corp End fitting for hoses

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2165909A (en) * 1984-10-22 1986-04-23 Earls Supply Co Fitting assembly for reinforced hose

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996037254A3 (en) * 1995-05-24 1997-02-20 Bard Inc C R Multiple-type catheter connection system
US5637102A (en) * 1995-05-24 1997-06-10 C. R. Bard, Inc. Dual-type catheter connection system
US6113572A (en) * 1995-05-24 2000-09-05 C. R. Bard, Inc. Multiple-type catheter connection systems
WO1996037254A2 (en) * 1995-05-24 1996-11-28 C.R. Bard, Inc. Multiple-type catheter connection system
AU742795B2 (en) * 1995-07-14 2002-01-10 Hansen Developments Limited A pipe coupling
DE19858396A1 (en) * 1998-12-17 2000-07-06 Duerr Systems Gmbh Hose connection nipple clamped to hose uses expanded cone part of nipple to mate with hose sleeve part forming catch hook and groove.
EP1055860A3 (en) * 1999-05-26 2002-05-29 McKECHNIE ENGINEERED PLASTICS LIMITED Improvements in or relating to pipe joints
US6773039B2 (en) 1999-06-04 2004-08-10 Friatec Aktiengesellschaft Plug-in coupling
DE19932718A1 (en) * 1999-09-23 2001-05-23 Friatec Ag Plug-in coupling for connecting two pipe ends; has base body, sealing ring and prestressed locking ring, where pipe end fits in gap between base body and annular body and is sealed with locking ring
US8226632B2 (en) 2002-02-05 2012-07-24 C. R. Bard, Inc. Connection methods
US6971390B1 (en) 2002-02-05 2005-12-06 C. R. Bard, Inc. Catheter connection and repair system
US7927325B2 (en) 2002-06-26 2011-04-19 Medasys Incorporated Implantable pump connector for catheter attachment
WO2004002555A1 (en) * 2002-06-26 2004-01-08 C.R. Bard, Inc. Connector for catheter attachment to an implantable pump
US7452354B2 (en) 2002-06-26 2008-11-18 Inset Technologies Incorporated Implantable pump connector for catheter attachment
WO2004046604A1 (en) * 2002-11-21 2004-06-03 Poloplast Gmbh & Co. Kg Universal hose coupling
EP1561987A1 (en) * 2004-02-05 2005-08-10 Bio Pure Technology Limited Tube connector
EP2211976B1 (en) 2007-10-30 2016-03-30 Medela Holding AG Device for connecting a suction hose
TWI486534B (en) * 2012-05-11 2015-06-01 Higashio Mech Co Ltd Pipe joint
EP2775187A3 (en) * 2013-03-07 2014-10-29 Grohe AG Device for a hose fitting
FR3059077A1 (en) * 2016-11-21 2018-05-25 Avon Automotive Uk Holdings Limited SYSTEM FOR CONNECTING A FLEXIBLE PIPE
US10563802B2 (en) 2016-11-21 2020-02-18 Avon Automotive Uk Holdings Limited Device for hose fitting
CN113767243A (en) * 2019-03-10 2021-12-07 麦克尓联合公司 Pipe connector, assembly and method
CN113767243B (en) * 2019-03-10 2024-09-06 麦克尓联合公司 Pipe connector, assembly and method

Also Published As

Publication number Publication date
GB9208789D0 (en) 1992-06-10
ITTO910175V0 (en) 1991-07-17
FR2679313A1 (en) 1993-01-22
JPH05126288A (en) 1993-05-21
ES1021210Y (en) 1993-03-16
ITTO910175U1 (en) 1993-01-17
FR2679313B1 (en) 1994-05-13
ES1021210U (en) 1992-10-16
GB2257764B (en) 1995-02-08
IT223227Z2 (en) 1995-06-13

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19970423