Parking interlock arrangement for an automatic transmission
AssigneeZF Friedrichshafen AG
InventorsHeinz Reichert, Gert Hanker, Ulrike Ziereisen, Bernd Austermann
Life of this patent
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Abstract
A parking interlock arrangement for an automatic transmission of a vehicle which comprises a parking interlock gear (1) operatively connected to an output shaft and which can be locked by way of a locking pawl (2) in a shift position (P) of a notched disk (4). The notched disk (4) is connected, in a rotationally fixed manner, to a selector shaft (5). The locking pawl (2) can be actuated by way of a connecting rod (3), and the connecting rod (3) is operatively connected to the notched disk (4) by way of a coupling device in order to limit the selecting torque to be applied to the selector shaft (5).
Claims12
A parking interlock arrangement for an automatic transmission of a vehicle, the parking interlock arrangement comprising:
- a parking interlock gear (1) which is operatively connected to an output shaft and which is lockable by a locking pawl (2) in a shift position (P) of a notched disk (4) that is connected in a rotationally fixed manner to a selector shaft (5),
- the locking pawl (2) being actuatable by a connecting rod (3), and
- the connecting rod (3) being operatively connected to the notched disk (4) by a coupling device in order to limit a selecting torque to be applied to the selector shaft (5),
- wherein the coupling device comprises a rod element (7) that is connected to the connection rod (3), the rod element (7) is supported, in an axially movable manner, by a guide housing (8), and the rod element (7) is guided by a guide element in an associated opening (11) of the notched disk (4).
A parking interlock arrangement for an automatic transmission of a vehicle, the parking interlock arrangement comprising:
- a parking interlock gear (1) being functionally coupled to an output shaft of the vehicle, and the parking interlock gear (1) being locked by a locking pawl (2) for preventing rotation of the output shaft when a notched disk (4) is located in a parking position (P);
- the notched disk (4) being rotatably secured to a selector shaft (5) such that the notched disk (4) being preventable from rotating with respect to selector shaft (5);
- the locking pawl (2) being actuated by a connecting rod (3) functionally connected, via a coupling device, to the notched disk (4) for limiting a selecting torque applied to the selector shaft (5);
- and
- the coupling device comprising a rod element (7) connected to the connecting rod (3), the rod element (7) being supported, in an axially movable manner, within a guide housing (8), the rod element (7) being guided by a guide element in an associated opening (11) of the notched disk (4) and the guide element being retained within an accommodating housing (12) of the rod element (7).
Dependencies are inferred from the claim text.