Electric switch assembly
AssigneeABB AB
InventorsMikko Välivainio, Juha Soldan, Jari Elomaa
Life of this patent
Estimating the term…
Abstract
A rotary switch assembly, including a rotary contact and a stationary contact, and a rotary actuator for rotating the rotary contact such as to connect with and disconnect from the stationary contact. The rotary actuator includes a shield for shielding the rotary contact from a side that faces the stationary contact when the rotary contact and the stationary contacted are being disconnected from each other.
Claims19
A rotary switch assembly, comprising a rotary contact and a stationary contact, and a rotary actuator for rotating the rotary contact such as to connect with and disconnect from the stationary contact, the rotary contact comprises one or more pairs of elongated contact blades, each blade including a blade portion arranged to make contact with the stationary contact such that one pair of elongated contact blades and the stationary contact interlock when in contact, a lateral gap being disposed between the pair of elongated contact blades such that the stationary contact is disposed within the lateral gap between the pair of elongated contact blades when the pair of elongated contact blades and the stationary contact interlock, and the rotary actuator is arranged to house the one or more pairs of elongated contact blades, wherein the rotary actuator comprises a shield that shields the blade portions from the stationary contact when the rotary contact and the stationary contact are being disconnected from each other.
A shield for an electric switch, wherein the shield comprises an interior space for receiving at least a portion of a one or more pairs of elongated contact blades, each blade including a blade end arranged to make contact with a stationary contact such that one pair of elongated contact blades and the stationary contact interlock when in contact, the shield further comprises a mounting portion for mounting the shield to a rotary actuator for rotating a rotary contact, and a shielding portion that shields the one or more pairs of elongated contact blades receivable at least partly interior of the shield, wherein the shield is arranged to shield a portion of each blade end not structured to directly contact the stationary contact, the rotary contact comprises one or more pairs of elongated contact blades, each blade including a blade portion arranged to make contact with the stationary contact such that one pair of elongated contact blades and the stationary contact interlock when in contact, a lateral gap being disposed between the pair of elongated contact blades such that the stationary contact is disposed within the lateral gap between the pair of elongated contact blades when the pair of elongated contact blades and the stationary contact interlock.
Dependencies are inferred from the claim text.