Limited rotation electrical coupling device

Abstract

Abstract A rotary electrical coupling device allows limited rotation between the leads (22) of a rotor shaft (16) and a stator assembly (14). The stator assembly includes a slotted cylindrical frame (26) and first and second bushings (30, 32) for rotatably supporting the rotor shaft within the frame. Each bushing has a groove (34, 36) selectively configured to engage the frame in a predetermined angular orientation and a notch (42, 44) which is selectively oriented when the bushings are engaged with the frame. A housing (54) surrounds the frame and has first and second detents (56, 58) which snap fit into the selectively oriented notches for locking the first and second bushings in engagement with the frame. The first bushing rotatably engages a channel (50) defined on the rotor shaft for preventing axial displacement of the rotor shaft relative to the stator assembly. Flat conductive tapes (20) are wound around the rotor shaft and pass through the siotted stator frame. The rotor leads are coupled to one end of the tapes on the rotor shaft and the stator leads (24) are coupled to the opposite end of the tapes between the stator frame and the stator housing.

Inventors

• 👤 James A. Young

Bibliographic Details