Parking brake controlling unit for motor vehicle, spur gears including pinion sections with larger diameter, which combines with pinion, and interlocking corrugation sections, which combining with pinion unit integral to nut

摘要

The unit has a pinion (15) operating by using two straight-toothed spur gears (161), and a nut (22) effecting a screwing movement along a longitudinal axis (x), while the rod (11) is moved relative to a housing. The spur gears have pinion sections with larger diameter (161a, 162a), which combines with the pinion, and interlocking corrugation sections (161b, 162b), which combine with a pinion unit (22b) integral to the nut.