Actuator for a parking lock
AssigneeSchaeffler Technologies AG & Co. KG
InventorFelix Bunout
Life of this patent
Estimating the term…
Abstract
An actuator for a parking lock includes an axial drive means for transmitting an axial force, an actuation element which can be axially moved from a first position into a second position via the axial force of the axial drive means, a stopper element, a stopper component which corresponds to the stopper element, and a holding element which can be moved between a released position and a locking position. The stopper element and the stopper component are fixed to each other when the actuation element is located in the second position while the holding element is in the locking position. A lifting magnet is provided, comprising a coil and a lifting piston, which can be axially moved via a magnetic force that can be generated by the coil. The holding element can be rigidly connected to the axially movable lifting piston.
Claims20
An actuator for a parking lock of a motor vehicle, comprising:
- an axial drive means for transmitting an axial force;
- an actuation element having an actuation axis configured to be axially moved from a first normal position to a second deflected position via the axial force of the axial drive means;
- a stopper element;
- a stopper component corresponding to the stopper element;
- a holding element configured to be moved between a released position and a locking position, and the stopper element and the stopper component are fixed to each other when the actuation element is in the second deflected position while the holding element is in the locking position;
- a lifting magnet comprising a coil and a lifting piston configured to be axially moved via a magnetic force generated by the coil, and the holding element is rigidly connected to the lifting piston, and
- wherein:
- a magnetic flux generated by the coil is conducted through a return circuit, and the return circuit comprises a radially inner return circuit and a radially outer return circuit, and
- an axial gap is present between a first surface of the lifting piston and a second surface of the radially inner return circuit in at least one of the released position or the locking position of the holding element, and
- the magnetic flux is conducted through the first surface and the second surface which form the axial gap.
An actuator for a parking lock of a motor vehicle, comprising:
- an actuation element having an actuation axis configured to be axially moved from a first normal position to a second deflected position via an axial force;
- a stopper element;
- a stopper component corresponding to the stopper element;
- a holding element configured to be moved between a released position and a locking position, and the stopper element and the stopper component are fixed to each other when the actuation element is in the second deflected position while the holding element is in the locking position;
- a lifting magnet comprising a coil and a lifting piston configured to be axially moved via a magnetic force generated by the coil, and the holding element is rigidly connected to the lifting piston, and
- wherein:
- a magnetic flux generated by the coil is conducted through a return circuit, and the return circuit comprises a radially inner return circuit and a radially outer return circuit, and
- an axial gap is present between a first surface of the lifting piston and a second surface of the radially inner return circuit in at least one of the released position or the locking position of the holding element, and
- the magnetic flux is conducted through the first surface and the second surface which form the axial gap.
Dependencies are inferred from the claim text.