Electric Drive Axle Central Actuator for Dual Parking Locks
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electric drive axles for motor vehicles require significant installation space and expenditure due to the need for multiple actuators to actuate parallel parking locks, which are not optimized for efficient use of space and resources.
Innovation Solution
A multifunctional actuator arrangement connects two independent parking lock units via a connecting linkage, allowing a central actuator to efficiently actuate both units, incorporating a main electric motor, emergency linear magnet, and spring energy store to reduce space and cost while ensuring secure locking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple actuators are used to actuate parallel parking locks, then reliable locking function is achieved, but installation space and expenditure increase significantly
Solution Approach 1:
The patent combines multiple actuator functions into a single central actuator arrangement that can actuate both parking lock units through a connecting linkage mechanism, thereby reducing the number of actuators from two to one and significantly decreasing installation space while maintaining reliable locking functionality
Solution Approach 2:
The central actuator arrangement is designed with multi-functionality to perform multiple tasks: it can actuate both parking lock units independently or simultaneously, and includes emergency actuation capability through a linear magnet, making a single component serve multiple functions that previously required separate actuators
2Adaptability or versatility
If multiple actuators are used to actuate parallel parking locks, then independent actuation capability is achieved, but device complexity and cost increase
Solution Approach 1:
The connecting linkage is segmented into multiple arms that can independently position each parking lock unit while being driven by a single central actuator, allowing independent actuation capability without requiring multiple separate actuators, thus reducing device complexity
Solution Approach 2:
The connecting linkage acts as an intermediary mechanism between the central actuator and the two parking lock units, enabling the single actuator to independently control both lock units through the mechanical transmission of motion via the linkage arms
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design enables simple and efficient actuation of two independent parking lock units within the electric drive axle, optimizing installation space and reducing overall expenditure while maintaining secure locking functionality.
Implementation Method 1
incorporating a main electric motor, emergency linear magnet, and spring energy store
Implementation Method 2
incorporating a main electric motor, emergency linear magnet, and spring energy store
Data Source
AI summary
An electric drive axle for a motor vehicle includes a first half shaft, a second half shaft, a first parking lock unit associated with the first half shaft, and a second parking lock unit associated with the second half shaft. The first parking lock unit and the second parking lock unit are mechanically connected to one another via a connecting linkage. A central actuator arrangement is adjustingly connected to the connecting linkage.