Axle Shaft Adapter Ring Spline Fixing

Solution Overview

Problem

Existing axle assemblies with integral axle flanges and reduction gears face challenges in securely fixing the adapter ring and hub with respect to the axle shaft, leading to potential misalignment and rotational issues.

Innovation Solution

The axle assembly incorporates an adapter ring with an adapter ring hole and outer adapter ring spline that securely mates with the axle shaft and hub spline, respectively, to prevent rotation and axial movement, ensuring fixed positioning and torque transmission.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If an integral axle flange with reduction gears is used, then the axle assembly structure is simplified, but the adapter ring and hub cannot be securely fixed with respect to the axle shaft, leading to potential misalignment and rotational issues

Engineering Contradiction:
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The invention divides the axle assembly into separate functional components: the axle shaft, the adapter ring, and the hub. This segmentation allows each component to be independently designed and optimized, with the adapter ring serving as a dedicated intermediary element that securely connects the axle shaft to the hub through splined interfaces, thereby solving the fixing reliability issue while maintaining structural efficiency

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The adapter ring acts as an intermediary component between the axle shaft and the hub. It features an inner adapter ring spline that mates with the axle shaft and an outer adapter ring spline that mates with the hub spline, creating secure mechanical connections. This intermediary element resolves the contradiction by providing reliable fixing without requiring a complex integral structure

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentEP3275695B1Axle assembly having an axle shaft subassembly
Publication Date: 2021.09.01
  • EP3275695B1 patent drawingFigure 1
  • EP3275695B1 patent drawingFigure 2
  • EP3275695B1 patent drawingFigure 3

AI summary

An axle assembly having an axle shaft subassembly. The axle shaft subassembly including an axle shaft (22) and an adapter ring (52). The adapter ring receiving the axle shaft and being fixedly positioned with respect to the axle shaft. A hub (120) receiving the adapter ring and being fixedly positioned with respect to the adapter ring.