Modular Parking Lock Gear with Detachable Annular Element
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Solution Overview
Problem
Existing parking lock arrangements require elaborate and costly adaptations to accommodate different vehicle and transmission sizes, as the load on the parking lock arrangement is proportional to the diameter of the parking lock gear, making it difficult to use universally across various vehicles and transmission sizes.
Innovation Solution
A modular parking lock gear design that allows an additional annular element with an external tooth array to be detachably fitted onto the existing parking lock gear, increasing its diameter and enabling adaptation to different load requirements without costly modifications, using a combination of axial abutments, bayonet sheet rings, and retaining rings for secure attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the diameter of the parking lock gear is increased to handle larger loads, then the load capacity is improved, but the device complexity and cost of adaptation increase
Solution Approach 1:
The parking lock gear is divided into a basic gear component and detachable annular elements. The annular elements can be added or removed to adjust the effective diameter and load capacity without replacing the entire gear assembly, thus reducing adaptation complexity while maintaining improved load capacity.
Solution Approach 2:
The parking lock gear system becomes dynamically adjustable through the detachable annular elements. The configuration can be changed based on load requirements by adding or removing annular elements, allowing the same basic component to adapt to different load capacities without elaborate modifications.
2Adaptability or versatility
If the diameter of the parking lock gear is increased to accommodate larger transmissions, then the versatility is improved, but the manufacturing cost and adaptation effort increase
Solution Approach 1:
A universal basic parking lock gear component is designed that can serve multiple transmission sizes through the addition of different annular elements. This allows one basic component to perform multiple functions across different vehicle applications, improving versatility without increasing manufacturing cost per unit.
Solution Approach 2:
The annular elements can be discarded (removed) when not needed or recovered (reused) across different applications. Instead of manufacturing custom gears for each transmission size, the same annular elements can be transferred and attached to different basic gear components, reducing overall manufacturing costs.
Data Source
AI summary
A parking lock gear (1) for a parking lock arrangement for locking an output shaft of a transmission of a vehicle has teeth (5). An annular element (2) is fixed to the parking lock gear (1) and has outer teeth (3) which engage an actuated locking pawl.