INSULATION OF VACUUM CARTRIDGE TYPE COMMUTATION DEVICE BY WAY OF SLUSH MOULDING Russian patent published in 2013 - IPC H01H33/66 

FIELD: electrical engineering.

SUBSTANCE: vacuum cartridge contains a commutation device (1) having a tightly sealed chamber (2) passing along the longitudinal axis (AA) wherein two contact (10) are placed movable relative each other along the axis (AA), the chamber housing (2) containing a tubular part (4) opened at the end and two conductive covers (6) strongly attached to the tubular part (4) by means of the connective area (8). The chamber housing (2) is made of elastomer insulating shell (22). The two conductive covering plates (26) surround the chamber (2) covers (61, 62), sealing them together with the ceramic tube (4). Each of the covering plates (26) contains a base wall and a peripheral side wall passing along the axis (AA) so that the connective area (8) and the tubular part end (4) are positioned within a covering plate (26). The boundaries of connection between the elastomer shell (22) and the housing tubular part (4) are accordingly tightly sealed with the covering plates.

EFFECT: elastomer infiltration prevention and housing protection against destruction.

16 cl, 2 dwg