US 12,454,989 B2
Helical connection mechanism for electromechanical brake caliper piston with simplified mounting
Jérôme Bertrand, Romainville (FR); and Fabrice Umbdenstock, Paris (FR)
Assigned to ASTEMO FRANCE, Drancy (FR)
Appl. No. 17/907,582
Filed by HITACHI ASTEMO FRANCE, Drancy (FR)
PCT Filed Mar. 25, 2021, PCT No. PCT/FR2021/050519
§ 371(c)(1), (2) Date Sep. 28, 2022,
PCT Pub. No. WO2021/198595, PCT Pub. Date Oct. 7, 2021.
Claims priority of application No. 2003307 (FR), filed on Apr. 2, 2020.
Prior Publication US 2023/0128238 A1, Apr. 27, 2023
Int. Cl. F16D 65/18 (2006.01); F16D 121/24 (2012.01); F16D 125/40 (2012.01)
CPC F16D 65/18 (2013.01) [F16D 2121/24 (2013.01); F16D 2125/40 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A helical connection mechanism for an electromechanical brake piston configured to be mounted in the piston,
wherein the helical connection mechanism comprises a sleeve and a drive member cooperating by a helical connection of longitudinal axis,
wherein the drive member comprises a head and rotational locking and axial holding means for rotationally locking the sleeve relative to the piston about the longitudinal axis and for axially holding the helical connection mechanism,
wherein the rotational locking and axial holding means comprise a plate attached to the sleeve and extending orthogonally to the longitudinal axis,
wherein the rotational locking and axial holding means comprise at least three axial extensions cooperating with an axial wall of the piston and at least one radial shape cooperating with the axial wall of the piston,
wherein the axial extensions extend from a radially external periphery of the plate towards the head, and
wherein the axial extensions form legs configured to ensure alignment of the sleeve and the drive member with an axis of the piston.