WO2005114030A1 - Hose connection - Google Patents

Hose connection Download PDF

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Publication number
WO2005114030A1
WO2005114030A1 PCT/SE2001/002242 SE0102242W WO2005114030A1 WO 2005114030 A1 WO2005114030 A1 WO 2005114030A1 SE 0102242 W SE0102242 W SE 0102242W WO 2005114030 A1 WO2005114030 A1 WO 2005114030A1
Authority
WO
WIPO (PCT)
Prior art keywords
nipple
nut
hose
connection
engagement part
Prior art date
Application number
PCT/SE2001/002242
Other languages
French (fr)
Inventor
Veor Lundberg
Original Assignee
Veor Lundberg
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 Veor Lundberg filed Critical Veor Lundberg
Priority to PCT/SE2001/002242 priority Critical patent/WO2005114030A1/en
Priority to AU2001296132A priority patent/AU2001296132A1/en
Publication of WO2005114030A1 publication Critical patent/WO2005114030A1/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
    • F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses

Definitions

  • the present invention relates to a hose coupling that simplifies the tightening of a hose connection in cramped or inaccessible spaces.
  • the device is particularly suitable for the connection of hydraulic hoses to coupling boxes where a plurality of hoses are connected in proximity to one another in a limited space.
  • connection of hoses that are used for medium at excess pressure has applications in many contexts and it is important that the connection coupling can be tightened sufficiently to prevent leakage.
  • hoses with an end nipple are used, which form a seal either directly or by means of a packing against a seat on the union or the like to which the connection is made.
  • the connection is made by tightening a nut that surrounds the outer part of the nipple tightly against the connecting union, so that a flange or collar on the nipple is clamped between the end surface of the union and the nut and is pressed against the seat on the union.
  • the nut is tightened with great force and the use of a suitable tool is necessary.
  • hose couplings of this type An important area of use for hose couplings of this type is hose couplings in various forms of machines and vehicles, such as those used in forestry and agriculture.
  • a plurality of hoses are often connected to one coupling box, which has a plurality of connecting unions in a small area. Since these hoses are exposed to high pressure, vibrations and movements when the machine is in operation, the life of the hoses is limited and breaking of the hose a relatively frequent occurrence.
  • the space at the coupling box is limited, which means that accessibility with tools is made more difficult, so that changing hoses can take a relatively long time.
  • the present invention relates to a hose coupling that facilitates the fastening and unfastening of a hose with nipple and a nut partially surrounding the nipple.
  • the invention facilitates the work of fastening or unfastening a hose from a 'coupling ' and shortens the time taken to do this.
  • Figure 1 shows the outside of a hose connection according to the invention in a tightened state.
  • Figure 2 shows a cross-section through the hose coupling according to figure 1.
  • Figure 3 shows a cross-section through the hose connection according to figure 1 in a tightened state.
  • Figure 4-6 show a cross-section through the hose connection in various parts.
  • the device according to the invention is used in order to connect a hose 1 to a union coupling 4 on a coupling box 2 in a hydraulic system, which operates at high pressure.
  • directional terms such as upward, downward, upper and lower are used in relation to what is shown in the figures and in order to describe the device in relation to these, but the invention can naturally be used regardless of directions.
  • the hose 1 has a fixed end nipple 3, which is partially surrounded by a nut 5.
  • the nipple comprises an hexagonal engagement part 6, which may be integrally formed with the nipple or formed as a separate part fastened to the nipple, so that the hexagonal engagement part is also fixed in relation to the hose.
  • the nipple has a lower flange or collar 7, which is arranged so that it bears either directly or with an intermediate packing against the upper surface of the union connection 4.
  • The. nut 5 has a through-hole for the nipple in which the latter can be displaced between limit positions against an inner flange 12 in the nut, the limit positions being defined by the collar 7 and the hexagonal part 6 of the nipple.
  • the hexagonal indentation In the nut 5, at the top thereof, there is a hexagonal indentation, the size of which is designed to be somewhat larger than the hexagonal part 6 of the nipple, so that the hexagonal part 6 can be introduced into the indentation, turning the hose and thereby the nipple acting upon the nut 5 so that this is turned in the same way.
  • the height of the inner flange 12 in the nut is selected so that the nipple can be displaced by a distance a which is greater than the thickness d of the hexagonal part 6 of the nipple.
  • the nut and the hose are moved towards one another, the nut can be turned by the turning of the hose and if the nut and the hose are moved apart from on another so that the hexagonal part 6 is not in engagement with the nut, the nut can be turned without the hose being turned.
  • the hose is moved towards the nut so that the hexagonal part 6 is in engagement with the nut 5.
  • the nut 5 and the union 4 have internal and external threads respectively of the same type, the nut being placed on the pipe union before or after the hexagonal part is introduced into the indentation on the. nut and by turning the hose the nut is screwed on to the union.
  • That part of the nipple described above as hexagonal and the corresponding indentation in the nut may be provided with different shapes, many of which are well known in the field of fasteners.
  • the indentation in the nut may also comprise a part in which the engagement part of the nipple can rotate freely after displacement from the engagement position. This take the form, for example, of an upwardly directed collar with circular internal cross-section and a shape that is designed to make it easier to bring the nipple and nut into engagement with one another. It is also possible to have the location of the indentation in the nut and the flange of the nut reversed, but the embodiment of the invention described above is preferred both with regard to manufacturing costs and from the point of view of use.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Joints That Cut Off Fluids, And Hose Joints (AREA)

Abstract

The present invention relates to a hose coupling for the sealing connection of a hose (1) having a nipple (3) fixed at the connection end and a nut (5) partially surrounding the nipple, which comprises a engagement part (6) fixed to the nipple (3) and an indentation arranged in the nut, so that through displacement of the nipple this can be brought into or out of engagement with the nut. The nipple (3) has a lower flange or collar (7), which is arranged so that it bears either directly or with an intermediate packing against the upper surface of the union connection (4). The nut (5) has a through-hole for the nipple, in which the latter can be displaced between limit position against an inner flange (12) in the nut, the limit positions being defined by a collar (7) and the engagement part (6) of the nipple. The height of the inner flange (12) in the nut is designed so that the nipple can be displayed by a distance (a), which is greater than the thickness (d) of the engagement part (6) of the nipple.

Description

Hose Connection
The present invention relates to a hose coupling that simplifies the tightening of a hose connection in cramped or inaccessible spaces. The device is particularly suitable for the connection of hydraulic hoses to coupling boxes where a plurality of hoses are connected in proximity to one another in a limited space.
The connection of hoses that are used for medium at excess pressure has applications in many contexts and it is important that the connection coupling can be tightened sufficiently to prevent leakage. For industrial use hoses with an end nipple are used, which form a seal either directly or by means of a packing against a seat on the union or the like to which the connection is made. The connection is made by tightening a nut that surrounds the outer part of the nipple tightly against the connecting union, so that a flange or collar on the nipple is clamped between the end surface of the union and the nut and is pressed against the seat on the union. The nut is tightened with great force and the use of a suitable tool is necessary.
An important area of use for hose couplings of this type is hose couplings in various forms of machines and vehicles, such as those used in forestry and agriculture. Here a plurality of hoses are often connected to one coupling box, which has a plurality of connecting unions in a small area. Since these hoses are exposed to high pressure, vibrations and movements when the machine is in operation, the life of the hoses is limited and breaking of the hose a relatively frequent occurrence. The space at the coupling box is limited, which means that accessibility with tools is made more difficult, so that changing hoses can take a relatively long time.
The present invention relates to a hose coupling that facilitates the fastening and unfastening of a hose with nipple and a nut partially surrounding the nipple. The invention facilitates the work of fastening or unfastening a hose from a 'coupling' and shortens the time taken to do this.
The hose coupling according to the invention and embodiments thereof have the characterising features specified in the subordinate claims.
The invention will be described in more detail below with reference to the example of a preferred embodiment, to which the invention is not limited, as shown in the figures attached. Figure 1 shows the outside of a hose connection according to the invention in a tightened state.
Figure 2 shows a cross-section through the hose coupling according to figure 1.
Figure 3 shows a cross-section through the hose connection according to figure 1 in a tightened state.
Figure 4-6 show a cross-section through the hose connection in various parts.
The device according to the invention is used in order to connect a hose 1 to a union coupling 4 on a coupling box 2 in a hydraulic system, which operates at high pressure. In the following, directional terms such as upward, downward, upper and lower are used in relation to what is shown in the figures and in order to describe the device in relation to these, but the invention can naturally be used regardless of directions. The hose 1 has a fixed end nipple 3, which is partially surrounded by a nut 5. The nipple comprises an hexagonal engagement part 6, which may be integrally formed with the nipple or formed as a separate part fastened to the nipple, so that the hexagonal engagement part is also fixed in relation to the hose. The nipple has a lower flange or collar 7, which is arranged so that it bears either directly or with an intermediate packing against the upper surface of the union connection 4. The. nut 5 has a through-hole for the nipple in which the latter can be displaced between limit positions against an inner flange 12 in the nut, the limit positions being defined by the collar 7 and the hexagonal part 6 of the nipple. In the nut 5, at the top thereof, there is a hexagonal indentation, the size of which is designed to be somewhat larger than the hexagonal part 6 of the nipple, so that the hexagonal part 6 can be introduced into the indentation, turning the hose and thereby the nipple acting upon the nut 5 so that this is turned in the same way. The height of the inner flange 12 in the nut is selected so that the nipple can be displaced by a distance a which is greater than the thickness d of the hexagonal part 6 of the nipple. As a result, when the nut and the hose are moved towards one another, the nut can be turned by the turning of the hose and if the nut and the hose are moved apart from on another so that the hexagonal part 6 is not in engagement with the nut, the nut can be turned without the hose being turned. When fastening a hose on to a pipe union using the device according to the invention, the hose is moved towards the nut so that the hexagonal part 6 is in engagement with the nut 5. The nut 5 and the union 4 have internal and external threads respectively of the same type, the nut being placed on the pipe union before or after the hexagonal part is introduced into the indentation on the. nut and by turning the hose the nut is screwed on to the union. When the nut has been screwed on to such an extent that the collar 7 of the nipple comes into contact with the top of the union or a packing located thereon, and screwing is continued, the nipple will be displaced upwards in the nut. The hexagonal part 6 of the nipple is thereby forced out of the indentation in the nut before this is fully tightened, but is in a position in which the nipple can then rotate freely in the nut. The nut is then finally tightened in the usual way using a tool. If the hose is to be fastened in the same way at both ends, final tightening is not performed until both ends have been screwed tight as just described.
The embodiment may be modified in various ways without departing from the idea of the invention. That part of the nipple described above as hexagonal and the corresponding indentation in the nut may be provided with different shapes, many of which are well known in the field of fasteners. In addition to the engagement part described above, the indentation in the nut may also comprise a part in which the engagement part of the nipple can rotate freely after displacement from the engagement position. This take the form, for example, of an upwardly directed collar with circular internal cross-section and a shape that is designed to make it easier to bring the nipple and nut into engagement with one another. It is also possible to have the location of the indentation in the nut and the flange of the nut reversed, but the embodiment of the invention described above is preferred both with regard to manufacturing costs and from the point of view of use.

Claims

1. Hose coupling for the sealing connection of a hose (1) having a nipple (3) fixed at the connection end and a nut (5) partially surrounding the nipple, characterized in that it comprises a engagement part (6) fixed to the nipple (3) and an indentation arranged in the nut, so that through displacement of the nipple this can be brought into or out of engagement with the nut.
2. Hose connection according to claim 1 , characterized in that the nipple (3) has a lower flange or collar (7), which is arranged so that it bears either directly or with an intermediate packing against the upper surface of the union connection (4).
3. Hose connection according to claim 2 characterized in that the nut 5 has a through-hole for the nipple, in which the latter can be displaced between limit positions against an inner flange (12) in the nut, the limit positions being defined by the collar (7) and the engagement part (6) of the nipple.
4. Hose connection according to claim 3, characterized in that the height of the inner flange (12) in the nut is designed so that the nipple can be displaced by a distance (a), which is greater than the thickness (d) of the engagement part (6) of the nipple,
PCT/SE2001/002242 2001-10-15 2001-10-15 Hose connection WO2005114030A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/SE2001/002242 WO2005114030A1 (en) 2001-10-15 2001-10-15 Hose connection
AU2001296132A AU2001296132A1 (en) 2001-10-15 2001-10-15 Hose connection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SE2001/002242 WO2005114030A1 (en) 2001-10-15 2001-10-15 Hose connection

Publications (1)

Publication Number Publication Date
WO2005114030A1 true WO2005114030A1 (en) 2005-12-01

Family

ID=35428456

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2001/002242 WO2005114030A1 (en) 2001-10-15 2001-10-15 Hose connection

Country Status (2)

Country Link
AU (1) AU2001296132A1 (en)
WO (1) WO2005114030A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3092404A (en) * 1961-01-25 1963-06-04 Macwilliam Wallace Packed screw threaded gland type tube coupling for thin walled tubing
FR2335783A1 (en) * 1975-12-19 1977-07-15 Martelli Louis Compression fitting for flexible or ductile pipes - has deformable lip forced to grip pipe by conical insert driven by nut
BE890009A (en) * 1981-08-18 1981-12-16 Feist Artus FLEXIBLE PIPE CONNECTION
NO156734B (en) * 1984-07-13 1987-08-03 Seikisui Chemical Co Ltd HOSE OR PIPE CONNECTOR.
US5788292A (en) * 1994-09-12 1998-08-04 Alfred Karcher Gmbh & Co. Connector for the pipe coupling of a high-pressure cleaning apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3092404A (en) * 1961-01-25 1963-06-04 Macwilliam Wallace Packed screw threaded gland type tube coupling for thin walled tubing
FR2335783A1 (en) * 1975-12-19 1977-07-15 Martelli Louis Compression fitting for flexible or ductile pipes - has deformable lip forced to grip pipe by conical insert driven by nut
BE890009A (en) * 1981-08-18 1981-12-16 Feist Artus FLEXIBLE PIPE CONNECTION
NO156734B (en) * 1984-07-13 1987-08-03 Seikisui Chemical Co Ltd HOSE OR PIPE CONNECTOR.
US5788292A (en) * 1994-09-12 1998-08-04 Alfred Karcher Gmbh & Co. Connector for the pipe coupling of a high-pressure cleaning apparatus

Also Published As

Publication number Publication date
AU2001296132A1 (en) 2005-12-08

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