WO2003023270A1 - Coupling device - Google Patents

Coupling device Download PDF

Info

Publication number
WO2003023270A1
WO2003023270A1 PCT/NL2002/000546 NL0200546W WO03023270A1 WO 2003023270 A1 WO2003023270 A1 WO 2003023270A1 NL 0200546 W NL0200546 W NL 0200546W WO 03023270 A1 WO03023270 A1 WO 03023270A1
Authority
WO
WIPO (PCT)
Prior art keywords
sleeve
coupling device
cylindrical part
drive part
coupling
Prior art date
Application number
PCT/NL2002/000546
Other languages
French (fr)
Inventor
Herman Johan Kooy
Original Assignee
Herman Johan Kooy
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 Herman Johan Kooy filed Critical Herman Johan Kooy
Publication of WO2003023270A1 publication Critical patent/WO2003023270A1/en

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
    • F16L41/00—Branching pipes; Joining pipes to walls
    • F16L41/08—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe
    • F16L41/10—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe the extremity of the pipe being screwed into the wall
    • 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
    • F16L41/08—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe
    • F16L41/14—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe by screwing an intermediate part against the inside or outside of the wall

Definitions

  • the invention relates to a coupling device for coupling a line, in particular a hose, to a hole provided with internal screw thread.
  • a clamping coupling is known to which a hose or line can be clamped and on which a nut-like part with internal screw thread is arranged for free rotation. This nu -like part can be screwed onto an external screw thread.
  • hydraulic components such as control blocks / wherein the connections are embodied as a hole with internal screw thread.
  • an adapter must first be screwed into the hole so that an external screw thread is formed.
  • the drawback hereof is that the number of operations during assembly is hereby increased, and that the number of connection surfaces is moreover increased. There is a chance of leakage at each connection surface. It is now an object of the invention to provide a coupling device with which a line, in particular a hose, can be directly coupled in a hole provided with internal screw thread.
  • sleeve which is arrranged rotatably on the cylindrical part and which is provided with an external screw thread; - a drive part arranged rotatably on the cylindrical part and coupled to the sleeve for rotatable driving of the sleeve.
  • the line can now be arranged in the hole provided with internal screw thread without torsion occurring in this line.
  • the sleeve comprises a radial guide for limiting axial displacement of the sleeve relative to the cylindrical part. Owing to this limited axial freedom of the sleeve it is possible, by rotating this sleeve into the hole, to eliminate play between the cylindrical part, the sleeve and the drive part. This results in a good sealing.
  • the radial guide is preferably formed by a radial guide groove arranged in one of the sleeve and the cylindrical part and, fitting therein, a radial flange arranged on the other of the sleeve and the cylindrical part.
  • axially extending channels are arranged in the sleeve.
  • the sleeve stretch slightly in diameter so that when the coupling device is fitted the sleeve can for instance be pushed over the radial guide.
  • This has the further advantage that when the sleeve is screwed tightly into a hole the radial guide consisting of a flange and a groove functions as a type of wedge bolt.
  • the coupling device comprises a first seal arranged on an axial end surface of the drive part directed toward the sleeve. This ensures sealing of the drive part on for instance the outer surface of a hydraulic control block in which the hole with internal screw hrea is provided.
  • a radially extending protrusion is arranged on the cylindrical part for bounding the axial displacement of the drive part in one direction. This protrusion is preferably a flange.
  • the cylindrical part can also comprise a narrowed portion, so that the drive part rests against the shoulder.
  • a second seal is preferably arranged between the flange and the drive part. Optimal sealing of the coupling device according to the invention is thus ensured .
  • the coupling between the sleeve and the drive part is formed by a recess arranged in one of the sleeve and the drive part and by a protrusion arranged on the other of the sleeve and the drive part and fitting into the recess.
  • the drive part and the sleeve can thus slide in axial direction relative to each other, whereby possible play can be eliminated.
  • An optimal contact against the seals is hereby obtained.
  • the depth of the recess is stepped. A limitation of the tightening moment can hereby be obtained. If the tightening moment becomes too great, the protrusion can then shoot through to a shallower part of the recess , This can be l by the fitter, who then stops the tightening.
  • FIG. 1 shows a coupling device 1.
  • This coupling device 1 has a cylindrical part 2.
  • On the first end of cylindrical part 2 are arranged ridges 3 along which a hose 4 can be pushed and where it is held ixedly on cylindrical part 2 by ridges 3.
  • a sleeve 5 is arranged for free rotation on the other end of cylindrical part 2.
  • This sleeve 5 is provided with an external screw thread.
  • Sleeve 5 is guided by a groove 6 arranged in cylindrical part 2.
  • a flange-like part of sleeve 5 protrudes into this groove 6.
  • Further provided in sleeve 5 are channels 7 which allow the sleeve 5 to expand slightly, similarly to a wedge bolt. This is also advantageous in mounting of sleeve 5 on cylindrical part 2.
  • a flange 8 is further arranged on cylindrical part 2.
  • Drive part 9 is arranged for free rotation between this flange 8 and sleeve-like part 5.
  • This drive part has a hexagonal peripheral surface part 10 similar to that of a nut or bolt,
  • a protrusion 11 which extends into a recess 12 of sleeve 5. It is thus possible using drive part 9 to drive the sleeve 5 and so rotate it into hole 13.
  • a first sealing O-ring 14 is arranged on the underside of drive part 9.
  • a second sealing O-ring 15 is provided between flange 8 and drive part 9.

Abstract

The invention relates to a coupling device for coupling a line, in particular a hose, to a hole provided with internal screw thread, which coupling device comprises: a cylindrical part to the first end of which the line can be fixed; a sleeve which is arranged rotatably on the cylindrical part and which is provided with an external screw thread; a drive part arranged rotatably on the cylindrical part and coupled to the sleeve for rotatable driving of the sleeve.

Description

COUPLING DEVICE
The invention relates to a coupling device for coupling a line, in particular a hose, to a hole provided with internal screw thread.
In for instance the field of hydraulics it is usual to connect hydraulic hoses to control blocks, hydraulic cylinders and the like. A clamping coupling is known to which a hose or line can be clamped and on which a nut-like part with internal screw thread is arranged for free rotation. This nu -like part can be screwed onto an external screw thread. There are however hydraulic components, such as control blocks/ wherein the connections are embodied as a hole with internal screw thread. To enable connection of an above stated clamping coupling, an adapter must first be screwed into the hole so that an external screw thread is formed. The drawback hereof is that the number of operations during assembly is hereby increased, and that the number of connection surfaces is moreover increased. There is a chance of leakage at each connection surface. It is now an object of the invention to provide a coupling device with which a line, in particular a hose, can be directly coupled in a hole provided with internal screw thread.
This object is achieved with a coupling device according to the invention, which comprises:
- a cylindrical part to the first end of which the line can be fixed;
- a sleeve which is arrranged rotatably on the cylindrical part and which is provided with an external screw thread; - a drive part arranged rotatably on the cylindrical part and coupled to the sleeve for rotatable driving of the sleeve.
Because the sleeve with external screw thread is arranged rotatably on the cylindrical part, the line can now be arranged in the hole provided with internal screw thread without torsion occurring in this line.
In a preferred embodiment the sleeve comprises a radial guide for limiting axial displacement of the sleeve relative to the cylindrical part. Owing to this limited axial freedom of the sleeve it is possible, by rotating this sleeve into the hole, to eliminate play between the cylindrical part, the sleeve and the drive part. This results in a good sealing. The radial guide is preferably formed by a radial guide groove arranged in one of the sleeve and the cylindrical part and, fitting therein, a radial flange arranged on the other of the sleeve and the cylindrical part. In yet another embodiment axially extending channels are arranged in the sleeve. It hereby becomes possible for the sleeve to stretch slightly in diameter so that when the coupling device is fitted the sleeve can for instance be pushed over the radial guide. This has the further advantage that when the sleeve is screwed tightly into a hole the radial guide consisting of a flange and a groove functions as a type of wedge bolt.
In yet another embodiment the coupling device according to the invention comprises a first seal arranged on an axial end surface of the drive part directed toward the sleeve. This ensures sealing of the drive part on for instance the outer surface of a hydraulic control block in which the hole with internal screw hrea is provided. In yet another embodiment a radially extending protrusion is arranged on the cylindrical part for bounding the axial displacement of the drive part in one direction. This protrusion is preferably a flange. Instead of a protrusion, the cylindrical part can also comprise a narrowed portion, so that the drive part rests against the shoulder.
A second seal is preferably arranged between the flange and the drive part. Optimal sealing of the coupling device according to the invention is thus ensured ,
In a further preferred embodiment according to the invention the coupling between the sleeve and the drive part is formed by a recess arranged in one of the sleeve and the drive part and by a protrusion arranged on the other of the sleeve and the drive part and fitting into the recess. The drive part and the sleeve can thus slide in axial direction relative to each other, whereby possible play can be eliminated. An optimal contact against the seals is hereby obtained. In yet another embodiment the depth of the recess is stepped. A limitation of the tightening moment can hereby be obtained. If the tightening moment becomes too great, the protrusion can then shoot through to a shallower part of the recess , This can be l by the fitter, who then stops the tightening.
These and other features of the invention are further elucidated with reference to the annexed figure. The figure shows a coupling device 1. This coupling device 1 has a cylindrical part 2. On the first end of cylindrical part 2 are arranged ridges 3 along which a hose 4 can be pushed and where it is held ixedly on cylindrical part 2 by ridges 3. A sleeve 5 is arranged for free rotation on the other end of cylindrical part 2. This sleeve 5 is provided with an external screw thread. Sleeve 5 is guided by a groove 6 arranged in cylindrical part 2. A flange-like part of sleeve 5 protrudes into this groove 6. Further provided in sleeve 5 are channels 7 which allow the sleeve 5 to expand slightly, similarly to a wedge bolt. This is also advantageous in mounting of sleeve 5 on cylindrical part 2.
A flange 8 is further arranged on cylindrical part 2. Drive part 9 is arranged for free rotation between this flange 8 and sleeve-like part 5. This drive part has a hexagonal peripheral surface part 10 similar to that of a nut or bolt, Provided on the underside of drive part 9 is a protrusion 11 which extends into a recess 12 of sleeve 5. It is thus possible using drive part 9 to drive the sleeve 5 and so rotate it into hole 13.
A first sealing O-ring 14 is arranged on the underside of drive part 9. A second sealing O-ring 15 is provided between flange 8 and drive part 9. When a coupling device 1 is now rotated into a hole 13 provided with internal screw thread, sleeve 5 will be screwed into hole 13 by driving of drive part 9, As soon as drive part $ comes to lie against surface 16 with the first O-ring 14, the sleeve 5 will rotate itself further into the hole through driving of the drive part, and thereby co-displace cylindrical part 2 therewith. Any play between cylindrical part 2, drive part 9 and sleeve 5 can hereby be eliminated and sufficient force is built up between the first O-ring 14 and surface 16 and between flange 8 and O-ring 15 to ensure a proper sealing.

Claims

1. Coupling device for coupling a line, in particular a hose, to a hole provided with internal screw thread, which coupling device comprises:
- a cylindrical part to the first end of which the line can be fixed;
- a sleeve which is arranged rotatably on the cylindrical part and which is provided with an external screw thread;
- a drive part arranged rotatably on the cylindrical part and coupled to the sleeve for rotatable driving of the sleeve.
2. Coupling device as claimed in claim 1, wherein the sleeve comprises a radial guide for limiting axial displacement of the sleeve relative to the cylindrical part,
3. Coupling device as claimed in claim 2, wherein the radial guide is formed by a radial guide groove arranged in one of the sleeve and the cylindrical part and, fitting therein, a radial flange arranged on the other of the sleeve and the cylindrical part.
4. Coupling device as claimed in any of the foregoing claims, wherein axially extending channels are arranged in the sleeve.
5. Coupling device as claimed in any of the foregoing claims, comprising a first seal arranged on an axial end surface of the drive part directed toward the sleeve.
6. Coupling device as claimed in any of the foregoing claims, wherein a radially extending protrusion is arranged on the cylindrical part for bounding the axial displacement of the drive part in one direction.
7. Coupling device as claimed in claim 6, wherein the protrusion is a flange.
8. Coupling device as claimed in claim 7, comprising a second seal arranged between the flange and the drive part.
9. Coupling device as claimed in any of the foregoing claims, wherein the coupling between the sleeve and the drive part is formed by a recess arranged in one of the sleeve and the drive part and by a protrusion arranged on the other of the sleeve and the drive part and it ing into the recess .
10. Coupling device as claimed in claim 9, wherein the depth of the recess is stepped.
PCT/NL2002/000546 2001-08-15 2002-08-15 Coupling device WO2003023270A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1018766 2001-08-15
NL1018766A NL1018766C2 (en) 2001-08-15 2001-08-15 Coupling device.

Publications (1)

Publication Number Publication Date
WO2003023270A1 true WO2003023270A1 (en) 2003-03-20

Family

ID=19773878

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL2002/000546 WO2003023270A1 (en) 2001-08-15 2002-08-15 Coupling device

Country Status (2)

Country Link
NL (1) NL1018766C2 (en)
WO (1) WO2003023270A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018081548A1 (en) * 2016-10-27 2018-05-03 Baxter International Inc. Medical fluid therapy machine including readily accessible pneumatic manifold and valves therefore

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4074703A (en) * 1976-09-07 1978-02-21 Caterpillar Tractor Co. Accumulator drain
EP0286568A1 (en) * 1987-04-01 1988-10-12 Vsi Corporation Hydraulic connector
DE4237219A1 (en) * 1992-11-04 1994-05-05 Grohe Armaturen Friedrich Pipe connector with alignment control - has split sleeved connector with outer thread rotating on end of male connector
DE19501546A1 (en) * 1995-01-19 1996-07-25 Roma Rohrleitungs Und Maschine Method of assembling hose coupling socket in gaseous or liq. medium pipeline

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4074703A (en) * 1976-09-07 1978-02-21 Caterpillar Tractor Co. Accumulator drain
EP0286568A1 (en) * 1987-04-01 1988-10-12 Vsi Corporation Hydraulic connector
DE4237219A1 (en) * 1992-11-04 1994-05-05 Grohe Armaturen Friedrich Pipe connector with alignment control - has split sleeved connector with outer thread rotating on end of male connector
DE19501546A1 (en) * 1995-01-19 1996-07-25 Roma Rohrleitungs Und Maschine Method of assembling hose coupling socket in gaseous or liq. medium pipeline

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018081548A1 (en) * 2016-10-27 2018-05-03 Baxter International Inc. Medical fluid therapy machine including readily accessible pneumatic manifold and valves therefore
CN110022911A (en) * 2016-10-27 2019-07-16 巴克斯特国际公司 The medical fluid therapy apparatus of pneumatic manifolds including being readily accessible to and the valve for it
US10792408B2 (en) 2016-10-27 2020-10-06 Baxter International Inc. Medical fluid therapy machine including readily accessible pneumatic manifold and valves therefore
EP3939649A1 (en) * 2016-10-27 2022-01-19 Baxter International Inc Connection apparatus and medical fluid delivery machine
CN110022911B (en) * 2016-10-27 2022-04-08 巴克斯特国际公司 Medical fluid treatment machine comprising an easily accessible pneumatic manifold and a valve therefor

Also Published As

Publication number Publication date
NL1018766C2 (en) 2003-02-18

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