US 11,912,252 B2
Hydraulic unit for a hydraulic vehicle brake system, and method for assembling a hydraulic unit
Andreas Weh, Sulzberg (DE); Martin Hagspiel, Rettenberg (DE); Matthias Mayr, Rettenberg (DE); and Stefan Kaserer, Ofterschwang (DE)
Assigned to ROBERT BOSCH GMBH, Stuttgart (DE)
Appl. No. 17/440,331
Filed by Robert Bosch GmbH, Stuttgart (DE)
PCT Filed Apr. 22, 2020, PCT No. PCT/EP2020/061126
§ 371(c)(1), (2) Date Sep. 17, 2021,
PCT Pub. No. WO2020/244840, PCT Pub. Date Dec. 10, 2020.
Claims priority of application No. 102019208397.8 (DE), filed on Jun. 7, 2019.
Prior Publication US 2022/0144238 A1, May 12, 2022
Int. Cl. B60T 13/74 (2006.01); B60T 8/40 (2006.01); F15B 15/14 (2006.01); F15B 15/20 (2006.01)
CPC B60T 13/745 (2013.01) [B60T 8/4022 (2013.01); F15B 15/14 (2013.01); F15B 15/20 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A hydraulic unit for a hydraulic vehicle braking system, comprising:
a hydraulic block that has a cylindrical hole in which a piston is axially displaceably guided;
a sleeve disposed nonrotatably at a mouth of the cylindrical hole and surrounds the piston; and
a rotation prevention element that is disposed between the sleeve and the piston and extends in a displacement direction of the piston, and which holds the piston nonrotatably by positive engagement, wherein a rear end of the rotation prevention element is held in a first receptacle of the sleeve, and the rotation prevention element projects forward out of the sleeve toward the hydraulic block;
wherein the sleeve has an inwardly projecting flange having a hole constituting the first receptacle for the rear end of the rotation prevention element.