SEALING STRUCTURE FOR ELECTROMAGNET FOR ELECTROMAGNETIC COUPLING

摘要

PROBLEM TO BE SOLVED: To seal the circumference of an electromagnet and thereby to protect it from the intrusion of a foreign substance. SOLUTION: This sealing structure is used for a core 119 of the electromagnet 3 disposed in a recessed part 121 of a rotor 21 constituting part of a magnetic path in an electromagnetic coupling 1 disposed between rotation shafts. In this case, a first sealing means 111 is disposed between the inner circumference of the core 119 and the rotor 21, and a second sealing means 113 is disposed in the radially inner side than the outside diameter of the core 21 between a cover 31 connected to the large diameter-side circumference of the rotor 21 and an extended part 115 of the core 119.