Classifications

• • 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
  • H01R4/28—Clamped connections, spring connections
  • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
  • H01R4/36—Conductive members located under tip of screw
  • H01R4/363—Conductive members located under tip of screw with intermediate part between tip and conductive member
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
  • H01R13/02—Contact members
  • H01R13/22—Contacts for co-operating by abutting

Definitions

• the present invention relates to a method for connecting an electrical cable to an electrical equip ⁇ ment, the electrical cable being run to and mechani ⁇ cally connected to a cable attachment separable from the electrical equipment.
• the equipment which may comprise, for example, one or more circuit cards, is placed in a housing or box of insulating material or metal, the terminal block constituting the lid or the bottom of the box.
• the terminal block constituting the lid or the bottom of the box.
• bared cable parts can be inserted between two plates, whereupon a screw is tightened such that the upper plate is pressed against the bared cable part and the lower plate.
• This type of connection has the ad ⁇ vantage that a high and exact contact pressure can be achieved, and furthermore the same contact pressure is obtainable for all connections if the screws are tightened by means of a torque wrench.
• the terminal block and the electrical equipment separable in some simple manner.
• the block may constitute a bottom part to which the cables are permanently attached.
• the electrical equipment is then mechani ⁇ cally and electrically connected to the terminal block by means of plugs.
• connection technique has many advantages and, in fact, combines the advantages of the two above- mentioned connection techniques.
• a sufficiently high and exact contact pressure can be obtained since the electrical connection is established directly between the bared cable part and the electrical equip ⁇ ment.
• the equipment is readily accessible and replaceable since the mechanical separation also occurs directly between the bared cable parts and the electri ⁇ cal equipment.
• this connection technique is advantageous from the viewpoint of production en ⁇ gineering since the customer can acquire the standard attachments before the electrical equipment and there- fore can wire the entire cable system prior to installa ⁇ tion of the equipment.
• Fig. 1 is a cross-sectional view illustrating a method of making the connection according to the invention.
• Fig. 2 illustrates another method of making the connection according to the invention.
• FIG. 1 illustrates how a cable 1 is connected to an electrical equipment 2 identified hereinafter as the apparatus.
• the bared end 3 of the cable 1 is secured in an attachment member 4 on the upper side of an attachment 5.
• the apparatus 2 is mounted mechanically on the upper side of the attachment 5.
• Mounting is carried out in such a manner that an electri ⁇ cally conductive member 6, for example a plate, which is secured to the underside of the apparatus 2, is contacted with the bared end 3 of the cable 1.
• a screw 7 is used for urging " the plate 6 against the bared part 3 of the cable, whereby the desired contact pressure is established.
• the screw 7 may either extend through the plate 6 and down into the cable attachment 5 , thus contributing to the mechanical mounting of the apparatus 2 on the attachment 5, or it may only act upon the plate 6 from above, in which case the mechanical mounting must be accomplished for example by means of other screws (not shown).
• the Figure merely shows the connection of one cable to the electrical equipment, and it will be appreciated that in most practical instances a plurality of cables are connected in parallel to the illustrated cable 1 and on the opposite side of the cable attach ⁇ ment 5.
• FIG. 2 Another embodiment of the connection according to the invention is shown in Fig. 2 in which the com ⁇ ponent parts illustrated in Fig. 1 are identified by like numerals.
• the cable 1 is placed in a slit 9 and its end is introduced into an attachment member 4.
• the electrically conductive member 6 has a bulge which, when the appa ⁇ ratus 2 is mounted on the attachment 5 , extends down into the slit 9 and urges a bared part 3 of the cable against a plate 8.
• this may be provided with an electrically conductive contact safety device (not shown) which may consist of, for example, a U-shaped part which is secured over the bared part and against which the electrically conductive member 6 is urged when the apparatus is mounted on the attach- ment.
• an electrically conductive contact safety device (not shown) which may consist of, for example, a U-shaped part which is secured over the bared part and against which the electrically conductive member 6 is urged when the apparatus is mounted on the attach- ment.
• the attachment 5 may constitute instead a lid, to the underside of which the cable 1 is attached and the apparatus is mounted.
• the electri ⁇ cally conductive member 6 of the apparatus, as well as the attachment member 4 may be designed in different ways, and the cable can be attached by pushing it down into and at right angles to the upper side of the attachment.

Landscapes

• Processing Of Terminals (AREA)
• Connections Arranged To Contact A Plurality Of Conductors (AREA)
• Details Of Connecting Devices For Male And Female Coupling (AREA)
• Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
• Multi-Conductor Connections (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=20362432

Family Applications (1)

Country Status (4)

Family Cites Families (3)

• 1985
  • 1985-12-12 SE SE8505869A patent/SE447319B/sv not_active IP Right Cessation
• 1986
  • 1986-12-11 WO PCT/SE1986/000565 patent/WO1987003747A1/en not_active Application Discontinuation
  • 1986-12-11 EP EP19870900318 patent/EP0249622A1/en not_active Withdrawn
  • 1986-12-11 JP JP50003087A patent/JPS63502148A/ja active Pending

Non-Patent Citations (1)

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