Classifications

• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
  • H02G15/00—Cable fittings
  • H02G15/08—Cable junctions
  • H02G15/18—Cable junctions protected by sleeves, e.g. for communication cable
  • H02G15/182—Cable junctions protected by sleeves, e.g. for communication cable held in expanded condition in radial direction prior to installation
  • H02G15/1826—Cable junctions protected by sleeves, e.g. for communication cable held in expanded condition in radial direction prior to installation on a removable hollow core, e.g. a tube
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
  • H01R4/70—Insulation of connections

Definitions

• the present invention concerns a method of mounting a tight-fitting tube section or a sleeve on a cable or the like.
• the Danish Patent Specification 150 428 likewise concerns a method where the frictional force is reduced by means of radial expansion effected with compressed air.
• cables are frequently assembled at locations where com- pressed air is not readily available, and compressed air methods are therefore not always equally applicable.
• the sleeve is stretched in an axial direction and returns to its original shape only slowly.
• the object of the present invention is to provide a me ⁇ thod of mounting a tube section or a sleeve over prefer ⁇ ably a cable end or joint, wherein only little friction 30 occurs between the tube section and the cable, which is not vitiated by the above-mentioned drawbacks and which lends itself for pre-fabrication.
• the tube section or the sleeve is made of silicone rubber and the rails of PTFE, PE or another suitable plastics material.
• the rails are engaged with one another either completely or partly so that they mutually support one another in maintaining a circular profile, but may additionally be provided with a supporting bushing or rod internally to assist in this function, said bushing or rod being removed immediately before application.
• figs. 1 and 2 show rails positioned from the end, and up to an assembling bushing and extending right through, respectively,
• figs. 3, 4 and 5 are end views illustrating the rails in various stages in the mounting of the tube section in accordance with the method of the invention, and fig. 6 shows examples of various useful profiles for performing the method.
• Fig. 1 shows a cable sleeve with a tube section 1 sur ⁇ rounding a cable conductor joint with a conductor 2 and a conductor assembling bushing 3, which has been placed inside the tube section or the sleeve prior to the mount ⁇ ing of the sleeve.
• the rails 5 are positioned from both insertion ends and adjoin the assembling bushing_
• the sleeve is shown with the cables 7 inserted at both sides, which causes the tube section to be expanded so that, in this state, the rails do not support one another any ⁇ more, but a gap 8 is established between them. In this state, the rails may be removed very easily, either singly or several at a time.
• Fig. 2 shows another type of cable joint 9 where the rails 5 extend through it and protrude from both ends of the joint.
• the tube section or the sleeve is first moved somewhat inwardly over one cable end, and then the conductor joint is made, and the tube section or the sleeve is positioned centrally over the joint, follow ⁇ ing which the rails 5 are removed quite easily, and the tube section or the sleeve fits quite close over the cable joint.
• Fig. 3 shows a section A-A from fig. 1 or 2 with the assembly seen from the end, prior to removal of the rails 5.
• Fig. 4 shows the same view as fig. 3, but with the rails removed.
• Fig. 5- shows a tube section or sleeve 1 with rails 5 and inserted supporting bushing 10, which may be a ne ⁇ cessary auxiliary feature for certain profile types in the building of a circular profile of the rails.
• Fig. 6 shows various examples of useful profiles for rails 5, which support one another by their convex 13 and concave 12 faces in the formation of a circular cross- section.
• the method may be applied to various cable joints such as e.g. assembling sleeves, stop sleeves and end sleeves.
• the method of the inven ⁇ tion also provides the advantage that tube sections or sleeves may be manufactured and stored in a pre-fabri- cated state without being stretched in advance.
• the same tube section or sleeve may be caused to accommodate seve ⁇ ral cable diameters and cable geometries owing to its very great elasticity, which it retains in contrast to known sleeves of the type which loses part of their elas- tic power when stored for a long time in an expanded state.

Landscapes

• Cable Accessories (AREA)
• Laying Of Electric Cables Or Lines Outside (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=8125836

Family Applications (1)

Country Status (4)

Families Citing this family (12)

Family Cites Families (8)

• 1987
  • 1987-07-16 DK DK370287A patent/DK161353C/da not_active IP Right Cessation
• 1988
  • 1988-07-15 FI FI900215A patent/FI900215A7/fi not_active IP Right Cessation
  • 1988-07-15 EP EP88905746A patent/EP0368880A1/de not_active Withdrawn
  • 1988-07-15 WO PCT/DK1988/000123 patent/WO1989000782A1/en not_active Ceased

Non-Patent Citations (1)

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