Parking lock unit and transmission assembly therefor

US11248702B2 · kind B2 · utility

Assignee

• GKN Automotive Limited · DE

Inventors

• Artur Grunwald · Nümbrecht, DE
• Sascha Miebach · Neunkirchen, DE

Key dates

• Filing date: Apr 5, 2019
• Grant date: Feb 15, 2022
• Expiry date: Apr 5, 2039

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16H63/3466
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A parking lock unit for a transmission assembly of a motor vehicle includes a parking ratchet wheel defining a longitudinal axis and a first spring arrangement. A second spring arrangement is arranged radially outwards of the first spring arrangement with respect to a longitudinal axis. A supporting sleeve is arranged coaxially to the parking ratchet wheel and is supported in a circumferential direction by the transmission assembly. The supporting sleeve has at least one opening. At least one locking element is arranged between the first and second spring arrangements and is radially movable in the at least one opening with respect to the longitudinal axis. The locking element is spring loaded by at least one of the first and second spring arrangements. The at least one locking element is movable radially inwards into a locked position and radially outwards into a release position by rotation of an actuating ring about the longitudinal axis.