Patent ID: 11905862
Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A gear device for an electric camshaft adjuster, the gear device comprising:
a drive unit,
an output unit disposed radially inside of the drive unit,
an electric adjustment unit configured to adjust a phase position of the output unit in relation to the drive unit,
a rotary plain bearing defined by an inner peripheral surface of the drive unit and an outer peripheral surface of the output unit,
a first projection and a second projection arranged on the drive unit so as to extend radially inward,
a third projection arranged on the output unit so as to extend radially outward between the first projection and the second projection,
a first cavity defined by the drive unit and the output unit between the first projection and the third projection,
a second cavity defined by the drive unit and the output unit between the second projection and the third projection, and
an overflow path connecting the first cavity to the second cavity,
wherein the overflow path is formed on the drive unit between the first projection and the second projection, or the overflow path extends across the third projection,
wherein the output unit is configured to rotate in relation to the drive unit between (i) a first end stop phase position in which the third projection contacts the first projection in a first rotational direction, and (ii) a second end stop phase position in a second rotational direction, and
wherein the overflow path is configured to enable hydraulic fluid to flow from the first cavity to the second cavity so as to dampen an impact between the drive unit and the output unit when the electric adjustment unit adjusts the phase position to the first end stop phase position.