Narrow Packaging Locking Differential via Segmented Collar
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
There is a need for a differential with reduced packaging size to accommodate the trend of lighter and more compact vehicle designs, while maintaining effective locking functionality.
Innovation Solution
A compact locking system for differentials is introduced, featuring a locking collar with radially protruding tabs that engage with ring gear and side output gear slots, allowing for selective locking configurations, thereby reducing the overall size of the differential while maintaining functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a conventional differential design is used, then reliable locking functionality is achieved, but the packaging size and weight increase
Solution Approach 1:
The locking collar is segmented with multiple locking tabs that can engage with corresponding slots in the side output gear and ring gear. This segmentation allows the locking function to be distributed across multiple discrete engagement points, enabling reliable locking while using a more compact collar structure that reduces overall differential packaging size.
Solution Approach 2:
The locking collar is positioned within the differential housing and嵌套 among other components such as the ring gear and side output gears. The locking tabs nest into slots that are integrated into the existing gear structures, allowing the locking mechanism to occupy minimal additional space within the differential assembly, thereby reducing packaging size while maintaining locking reliability.
2Weight of moving object
If the differential size is reduced for compact vehicle design, then weight and packaging are improved, but the locking mechanism complexity increases
Solution Approach 1:
The locking collar serves multiple functions: it provides locking engagement through its tabs, maintains proper spacing between components, and guides the engagement of locking tabs with slots. By consolidating these functions into a single component, the design achieves weight reduction and compact packaging without proportionally increasing complexity, as the collar's multi-functionality offsets the added locking mechanism requirements.
Solution Approach 2:
The locking mechanism is merged with the existing differential components. The locking tabs on the collar engage with slots that are integrated into the side output gear and ring gear structures, rather than being separate independent elements. This merging reduces the number of discrete parts and simplifies the overall locking system, enabling weight reduction and compact design while controlling complexity.
3Volume of moving object
If a compact locking system is implemented, then packaging size is reduced, but the manufacturing precision requirements increase
Solution Approach 1:
The locking tabs and slots are designed with predetermined geometric relationships and tolerance zones that guide their engagement. The preliminary positioning features on the locking collar and corresponding components ensure that alignment is established before final engagement, reducing the actual manufacturing precision required during assembly while maintaining compact packaging dimensions.
Solution Approach 2:
The locking mechanism uses optimized dimensional parameters for the tabs and slots, including their lengths, widths, and angular orientations. By carefully selecting these parameters within acceptable tolerance ranges, the design achieves compact packaging while the parameter variations provide built-in alignment compensation, reducing the stringency of manufacturing precision requirements.
Data Source
AI summary
A locking system for a narrow package differential with a locking collar, a ring gear and a side output gear is provided. The locking collar has at least one locking tab. The ring gear has at least one ring gear slot and an opening section in each ring gear slot. The at least one ring gear slot receives the at least one locking tab of the locking collar. The side output gear has at least one side gear slot. The side output gear is positioned such that the at least one side gear slot can be accessed through the opening section in the ring gear slot. The at least one locking tab of the locking collar in the ring gear slot is selectively received within the side output gear slot to selectively place the differential in a locking configuration.