Vehicle pedal assembly with hysteresis assembly

摘要

A vehicle pedal assembly with a rotatable pedal. A hysteresis assembly includes a friction device and plunger, and first and second springs that are all separate and decoupled from each other and the pedal. The first spring exerts a force against the friction plunger that forces the friction device into frictional contact with the housing to generate and transfer a resistance force to the pedal. The first spring also exerts a force against the pedal when a foot force is removed from the pedal to return the pedal to idle with and without the movement of the friction device and without the force of the second spring. The second spring exerts a force against the friction device when the foot force is removed to return the pedal to idle without the force of the first spring. Barriers block the entry of debris into the housing.

主权项

1. A vehicle pedal assembly comprising:
a pedal housing including opposed and spaced side walls defining a front opening and an interior cavity; a pedal including a pedal arm extending through the front opening and a drum located in the interior cavity, the drum including an exterior arcuate surface extending in a relationship normal to the opposed side walls of the pedal housing and opposed and spaced parallel sides extending in a relationship opposed and parallel to the respective opposed and spaced side walls of the pedal housing; and a first debris barrier at the front opening of the pedal housing including a first pair of shoulders extending outwardly from the opposed sides of the drum respectively in a relationship normal to the opposed sides of the drum and a second pair of shoulders projecting outwardly from an interior surface of the opposed side walls of the pedal housing respectively in a relationship normal to the opposed side walls of the pedal housing and in an overlapping relationship with the first pair of shoulders.