MAGNETICALLY LATCHING TWO POSITION ACTUATOR AND A CLUTCHED DEVICE HAVING A MAGNETICALLY LATCHING TWO POSITION ACTUATOR

摘要

An actuator can include a housing, core assembly, and first and second electromagnets. The housing can have a first pole piece, second pole piece, and central pole piece disposed between the first and second pole pieces. The central pole piece can have a central body and a bridge. The bridge can be between the first and second pole pieces and axially movable relative thereto. The core assembly can be received in the housing. The core assembly can be movable along a first axis between a first core position and a second core position. The core assembly can include a permanent magnet, a first core, and a second core. The first and second cores can be coupled to the permanent magnet for common axial movement. The first and second electromagnets can be spaced axially apart by the central body and can have opposite polarities.

主权项

1. An actuator comprising:
a housing having a first pole piece, a second pole piece, and a central pole piece disposed between the first and second pole pieces, the central pole piece having a central body and a bridge, the bridge having a first base, a second base, and a span that extends between the first and second bases; a core assembly received in the housing and being movable along a first axis between a first core position and a second core position, the core assembly including a permanent magnet, and first and second cores coupled for common axial movement with the permanent magnet and spaced axially apart by the permanent magnet; and a first and second electromagnet, spaced axially apart by the central pole piece and having opposite polarities; wherein the central pole piece extends radially inward of an outermost portion of the first core and radially inward of an outer most portion of the second core, and the central body is axially between the first and second electromagnets; wherein the first base is radially inward of the first electromagnet and axially overlaps with a portion of the first electromagnet, and the second base is radially inward of the second electromagnet and axially overlaps with a portion of the second electromagnet.