Support element

US10066517B2 · kind B2 · utility

Assignee

• Schaeffler Technologies AG & Co. KG · DE

Inventors

• Jurgen Kretschmer · Eßlingen, DE
• Peter Sailer · Erlangen, DE
• Wolfgang Christgen · Seukendorf, DE
• Michael Kugler · Vestenbergsgreuth, DE
• Jochen Tovar · Kirchehrenbach, DE
• Max Schafer · Nuremberg, DE

Key dates

• Filing date: Mar 31, 2015
• Grant date: Sep 4, 2018
• Expiry date: Aug 15, 2035

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01L2001/2444
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A double-flow hydraulic support element for a switchable finger lever of a valve train of an internal combustion engine is provided. A piston is arranged in an axial bore of the housing of the support element in an axially movable manner, and the piston includes a hollow cylindrical pressure part and a cup-shaped working part. A head of the pressure part is used as a support for the finger lever and projects beyond the housing edge, and an opening for the flow of a hydraulic medium is formed in the end face of the head. The housing has a first passage and a second passage axially spaced from the first passage for the hydraulic medium. The support element has a hydraulic play compensation device with a ball non-return valve for the finger lever. In order to achieve an optimal actuation of the coupling element, a sleeve which is closed on one side is inserted into the pressing part; the closed end of the sleeve reaches the region of an outer annular groove in a sealing manner below the dome-shaped head of the pressing part; a storage space for supplying the play compensation device with the hydraulic medium is formed radially within and axially outside of the sleeve, in the pressure …