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Electromagnetic switching apparatus with interchangeable switches

  • US 4,800,352 A
  • Filed: 10/08/1987
  • Issued: 01/24/1989
  • Est. Priority Date: 10/09/1986
  • Status: Expired due to Fees
First Claim
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1. An electromagnetic switching apparatus comprising:

  • i. an insulating base having a coupling wall provided with at least one opening and input and output socket contacts mounted in said coupling wall;

    ii. actuating electromagnet means housed in said base and having an armature movable along a first direction parallel to said wall from a rest to an actuated positions and at least one coupling member attached to said armature and having an elongate receptacle substantially extending at right angles to said coupling wall;

    iii. at least one insulating case having a fixation wall adapted for removably mating with said coupling wall;

    at least one aperture being provided in said fixation wall and registering at least partially with said opening and input and output conductor portions outwardly protruding from said fixation wall to plug-in into the respective socket contacts;

    iv. switch means connected to said conductor portions and housed in said case, said switch means comprising at least one fixed contact, at least one movable contact and at least one pivotable lever holding the movable contact for effecting a displacement of the movable contact from a closed to an open condition of the switch means when the armature is in the actuated position, said displacement being effected in a second direction substantially perpendicular to said coupling wall, said holding lever pivoting about an axis substantially perpendicular to said first and second directions;

    v. at least one insulating layer pivotally mounted about the axis of the holding lever and driving the latter for displacing the movable contact, said insulating lever passing through said opening and said aperture and having a coupling head which is removably engaged into said receptacle andvi. locking means for preventing engagement in said head into said receptacle and disengagement of said head from said receptacle both in the closed condition of the movable contact and when the armature is in its actuated position.

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