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

Claim 10:
11. An electric camshaft adjuster, comprising:
a strain wave gear device including:
a ring gear,
an output unit disposed radially inside of the ring gear,
an electric adjustment unit configured to adjust a rotary position of the output unit relative to the ring gear,
a rotary plain bearing defined by an inner peripheral surface of the ring gear and an outer peripheral surface of the output unit,
a first projection and a second projection arranged on the ring gear 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 ring gear and the output unit between the first projection and the third projection,
a second cavity defined by the ring gear and the output unit between the second projection and the third projection, and
a depression defining an overflow path formed on the ring gear between the first projection and the second projection so as to connect the first cavity to the second cavity,
wherein the output unit is configured to rotate in relation to the ring gear 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 depression is configured to enable a flow of fluid from the first cavity to the second cavity so as to dampen an impact between the ring gear and the output unit when the electric adjustment unit adjusts the phase position to the first end stop phase position.