US 12,460,464 B2
Brake for vehicle closure actuator
Gregory Sproule, Linden, MI (US); Kimpon Ngem, Grant Township, MI (US); Paul Crociata, Farmington Hills, MI (US); Steven Buell, Auburn Hills, MI (US); and Howard Kuhlman, Rochester Hills, MI (US)
Assigned to STRATTEC POWER ACCESS LLC, Auburn Hills, MI (US)
Filed by STRATTEC POWER ACCESS LLC, Auburn Hills, MI (US)
Filed on Dec. 2, 2022, as Appl. No. 18/073,773.
Claims priority of provisional application 63/293,466, filed on Dec. 23, 2021.
Prior Publication US 2023/0203869 A1, Jun. 29, 2023
Int. Cl. E05F 3/16 (2006.01); E05F 5/02 (2006.01); E05F 15/41 (2015.01); E05F 15/77 (2015.01); E05F 15/63 (2015.01)
CPC E05F 3/16 (2013.01) [E05F 5/025 (2013.01); E05F 15/41 (2015.01); E05F 15/77 (2015.01); E05F 15/63 (2015.01); E05Y 2201/21 (2013.01); E05Y 2201/216 (2013.01); E05Y 2201/236 (2013.01); E05Y 2201/246 (2013.01); E05Y 2201/248 (2013.01); E05Y 2201/264 (2013.01); E05Y 2201/408 (2013.01); E05Y 2201/41 (2013.01); E05Y 2201/474 (2013.01); E05Y 2201/624 (2013.01); E05Y 2201/704 (2013.01); E05Y 2201/706 (2013.01); E05Y 2400/326 (2013.01); E05Y 2400/44 (2013.01); E05Y 2400/522 (2013.01); E05Y 2400/86 (2013.01); E05Y 2600/45 (2013.01); E05Y 2600/46 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A power closure actuator for powering a movable closure, the power closure actuator comprising:
an output member configured to drive movement of the movable closure;
an electric motor coupled through at least one gear reduction stage to drive the output member;
a shaft situated between the electric motor and the output member, the shaft configured to selectively transmit power from the electric motor to the output member; and
a brake device situated along the shaft and configured for actuation via an electric brake actuator to apply braking force to the shaft, the brake device including
an active brake clamp movable along an axis of the shaft by the electric brake actuator,
an axially floating rotor configured for rotation with the shaft, the axially floating rotor having a first axial side facing the active brake clamp and providing a first braking surface for frictional contact therewith, and the axially floating rotor having a second axial side providing a second braking surface, and
a passive backing brake clamp positioned adjacent the second axial side of the axially floating rotor for frictional contact with the second braking surface thereof, wherein the axially floating rotor is biased away from the passive backing brake clamp by a first biasing member,
wherein deflection of the first biasing member coupled with axial movement of the active brake clamp and the axially floating rotor is configured to enable application of the braking force by pinching action of the axially floating rotor between the active brake clamp and the passive backing brake clamp.