Differential Gearbox Ring Gear Mounting With Integrated Claws
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Solution Overview
Problem
Existing differential and transfer gearboxes for vehicles are heavy, require numerous components, and have complex mounting processes that are not accurately robust, leading to inefficiencies in centering and transmission.
Innovation Solution
A differential gearbox design featuring a differential cage with integrated circumferential claws and a large gearwheel or ring gear with corresponding cutouts, allowing for a form-fitting connection via peel-caulking, reducing the number of components and simplifying the mounting process while ensuring robust centering and fixing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional screw connections with precise bores are used to connect the large gearwheel to the differential cage, then the connection is robust, but the number of components increases and the mounting process becomes complex
Solution Approach 1:
The patent merges the connection function into the differential cage structure itself by integrating claws that directly engage with the large gearwheel. This eliminates the need for separate screws and bores, reducing component count while maintaining connection robustness through the form-fitting engagement of the claws with the gearwheel teeth.
Solution Approach 2:
The patent extracts the connection mechanism from the traditional screw-based system and embeds it directly into the differential cage. The claws are integrated into the cage structure, allowing direct engagement with the large gearwheel without requiring separate fastening components, thereby simplifying the overall assembly.
2Manufacturing precision
If multiple separate components are used to ensure robust centering and fixing, then the centering accuracy is improved, but the weight of the assembly increases
Solution Approach 1:
The patent combines multiple functions (centering, fixing, and connection) into a single integrated claw structure on the differential cage. The claws serve both as connection elements and as centering features through their geometric engagement with the large gearwheel, eliminating the need for separate centering components and reducing overall assembly weight.
Solution Approach 2:
The integrated claws on the differential cage perform multiple functions simultaneously: they provide mechanical connection to the large gearwheel, ensure accurate centering through their geometric arrangement, and fix the relative position between components. This multi-functionality reduces the number of separate parts needed, thereby reducing weight while maintaining precision.
3Strength
If numerous separate components are used for assembly, then the connection strength is maintained, but the manufacturing cost increases
Solution Approach 1:
The patent merges multiple connection functions into the integrated claw structure on the differential cage. The claws engage directly with the large gearwheel teeth, providing strong mechanical connection without requiring separate fasteners. This integration reduces the total number of parts that need to be manufactured, assembled, and quality-checked, thereby reducing manufacturing costs while maintaining connection strength.
Solution Approach 2:
The patent extracts the connection function from the traditional multi-component fastening system and embeds it into the differential cage structure itself. The integrated claws eliminate the need for separate screws, washers, and alignment features, reducing manufacturing complexity and cost while maintaining adequate connection strength through direct engagement with the gearwheel.
Data Source
AI summary
The invention relates to a differential or transfer gearbox (10) in a motor vehicle, a method of production and the use of the differential or transfer gearbox (10). The differential or transfer gearbox (10) comprises a differential case (12) in which differential side gears (18, 20) and differential gears (22, 24) are accommodated. Each differential side gear (18) drives a first axle shaft (14) or a second axle shaft (16). A ring gear (32, 60) is driven by an input shaft (34) and mounted for conjoint rotation with the differential case (12). The ring gear (32, 60) is interlockingly connected to the differential case (12) of the differential or transfer gearbox (10).