Magnet structure and magnet support structure in an electromagnetically operated switch

Abstract

Abstract A MULTIPLE CONTACT ELECTROMAGNETICALLY OPERATED SWITCH HAVING A HOUSING THAT PROVIDES AN ENCLOSURE FOR THE ELECTROMAGNET OPERATOR OF THE SWITCH. THE HOUSING INCLUDES AT LEAST ONE METAL PART THAT HAS A HIGH COEFFICIENT OF THERMAL CONDUCTIVITY SO THE HOUSING ACTS AS A HEAT SINK AND A RADIATOR FOR HEAT GENERATED WITHIN THE ELECTROMAGNET WHEN A MAGNET COIL OF THE ELECTROMAGNET IS ENERGIZED. THE HEAT SINKING CAPABILITY IS ACCOMPLISHED BY SUPPORTING A PORTION OF A MAGNET CORE FOR THE ELECTROMAGNET OF THE METAL HOUSING BY A PAIR OF EARS THAT ARE LOCATED ADJACENT THE POLE FACES OF THE MAGNET CORE TO MIXIMIZE THE TRANSFER OF HEAT BETWEEN THE MAGNET CORE AND THE HOUSING. THE EARS EXTEND FROM A MEMBER THAT IS CENTRALLY LOCATED IN THE STACK OF LAMINATED PIECES OF MAGNETIC IRON FORMING THE MAGNET CORE. A MEMBER PROVIDING THE CONNECTION BETWEEN THE ARMATURE AND A BELL CRACK LEVER EXTENDS CENTRALLY IN THE STACK OF LAMINATED PIECES OF MAGNETIC IRON FORMING THE ARMATURE SO THE SUPPORT FOR THE MAGNET CORE AND THE OUTPUT OF THE ARMATURE ARE COPLANAR WITH RESILIENT MEMBERS CARRIED BY THE MEMBER PROVIDING THE CONNECTION BETWEEN THE ARMATURE AND BELL CRACK ABSORBING THE SHOCK WHEN THE ELECTROMAGNET IS DE-ENERGIZED.

Inventors

• 👤 Merlin Y Turnbull
• 👤 Harold E Whiting

Bibliographic Details