US 12,084,017 B2
Electro-hydraulic actuator for brake
Marco Carrara, Curno (IT); and Paolo Sala, Curno (IT)
Assigned to Brembo S.p.A., Bergamo (IT)
Appl. No. 17/059,695
Filed by FRENI BREMBO S.P.A., Curno (IT)
PCT Filed May 24, 2019, PCT No. PCT/IB2019/054324
§ 371(c)(1), (2) Date Nov. 30, 2020,
PCT Pub. No. WO2019/229604, PCT Pub. Date Dec. 5, 2019.
Claims priority of application No. 102018000005888 (IT), filed on May 31, 2018.
Prior Publication US 2021/0197782 A1, Jul. 1, 2021
Int. Cl. B60T 13/74 (2006.01); F16H 1/46 (2006.01); F16H 55/06 (2006.01); F16H 57/02 (2012.01); F16H 55/17 (2006.01)
CPC B60T 13/745 (2013.01) [F16H 55/06 (2013.01); F16H 57/02 (2013.01); F16H 1/46 (2013.01); F16H 2055/176 (2013.01); F16H 2057/02034 (2013.01); F16H 2057/02082 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An electro-hydraulic actuator for actuating a brake caliper, in particular a disc brake of a vehicle with two or more wheels, comprising:
an electric motor with a drive shaft;
a transforming mechanism connected to the drive shaft to transform a rotary motion of the drive shaft into a translational motion of a translatable portion configured to act on a hydraulic master cylinder of said brake;
a first housing configured to accommodate the transforming mechanism and support a second housing of the electric motor, said transforming mechanism including a reduction gear configured to demultiply the rotary motion of the drive shaft, said reduction gear comprising a crown with inner toothing in one piece and rotationally locked,
wherein
said crown with inner toothing comprises a front portion directly shape-coupled to and inserted in the second housing of the electric motor and a connection integral with the first housing of the transforming mechanism so as to achieve a precise centering between the electric motor and the reduction gear with respect to the axis of the drive shaft and with respect to a central axis of the reduction gear.