Drive assembly with override mechanism

摘要

A disclosed drive assembly is suitable for driving an actuatable component in a first direction and a second direction. The drive assembly includes a housing and a drive rod. The drive rod selectively extends and retracts to apply a driving force to the actuatable component in a first and a second direction, respectively. The driving force creates a reactive force on the housing. An override assembly includes a spring in communication with the housing. The housing pushes a first end of the spring toward a second end of the spring when the reactive force exceeds a predetermined limit and the drive rod applies the driving force in the first direction. The housing pulls the second end of the spring toward the first end of the spring when the reactive force exceeds the predetermined limit and the drive rod applies the driving force in the second direction.

主权项

1. A drive assembly for driving an actuatable component in a first direction and a second direction, the drive assembly comprising:
a support, an override assembly comprising
a frame rotatably coupled to the support,first and second spring fittings slidably coupled to the frame,a spring disposed between the first and second spring fittings,a rod slidably associated with the first and second spring fittings,first and second biasing members associated with the rod, the first and second spring fittings being disposed between the first and second biasing members; an actuator, comprising
a housing fixedly coupled to the first biasing member; anda drive rod selectively extending from and retracting into the housing to apply a driving force to the actuatable component in the first direction and the second direction, respectively, application of the driving force creating a reactive force on the housing.