AN INTERLOCKING MECHANISM FOR SWITCHING DEVICES

摘要

The present invention relates to an interlocking mechanism (1) for inter- locking a first and a second low voltage switching devices (200, 200'), wherein each of the switching devices (200, 200') comprises a movable contact part, a stationary contact part and, an actuating unit for operating the movable contact part in a direction and making connection or disconnection with the stationary contact part, the interlocking mechanism com- prising a first and a second housing (2, 2') connected to each other,a first and a second sliding bar (10, 10'), where in the first sliding bar (10) is arranged on the first housing (2) and connecting to the actuating unit of the first switching device (200), where in the second sliding bar (10') is arranged on the second housing (2') and connecting to the actuating unit of the second switching device(200'), and wherein a sliding plane (P) is de- fined and has a X-and Y-axis, the Y-axis being defined in the direction of motion of the actuating unit of the switching devices (200, 200') and, wherein each of the sliding bars (10, 10') are configured to slide in the Y- axis direction of the sliding plane (P), a shaft (30) disposed between the first and the second houses (2, 2'), and a cam (40) configured to be rotatable about the shaft (30) when both switching devices are in open positions. The shaft (30) is disposed to be perpendicular to the sliding plane (P) so that the shaft (30) is perpendicular to the direction of motion of the actuating unit of the switching devices. Furthermore, the cam (40) further comprises a first and a second locking element (42, 42') for blocking the first and second sliding bar (10, 10') respectively, each of the locking elements (42, 42') protruding laterally in the X-axis direction. Each of the sliding bars (10, 10') further comprises an opening (12, 12') at one end of the bar, wherein the opening (12, 12') is configured for retaining the corresponding locking element (42, 42') when the corresponding switching de- vice (200, 200') is in a closed position.