Hybrid Drive Module Input Member Alignment for Axial Balance

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Solution Overview

Problem

Existing hybrid driving modules face challenges in achieving stable axial balance and simplified assembly due to complex support structures for the input member, often leading to abrasion and damage between the input member and the engine clutch.

Innovation Solution

The input member is supported and aligned in both radial and axial directions by a central shaft extension part of the rotor hub, with bearings providing rotation and thrust support, allowing additional support structures to be easily implemented and reducing the number of components, thus ensuring stable axial balance and preventing abrasion.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If the input member is supported only by a rotor hub or housing, then the structure is simple, but the axial balance of the input member becomes unstable

Engineering Contradiction:

Improvesupport structureVSAvoidaxial balance

Core Design Contradiction:

Device complexityVSStability of the object's composition

Solution Approach 1:

The support function is segmented into two independent parts: the rotor hub provides radial support while the housing provides axial support. This division allows each component to perform its specialized support function effectively, achieving stable axial balance without significantly increasing overall structural complexity.

Inventive Principle:

Principle #1Segmentation

2Stability of the object's composition

If the input member is supported by multiple separate components, then the axial balance is improved, but the manufacturing process becomes complicated

Engineering Contradiction:

Improveaxial balanceVSAvoidmanufacturing process

Core Design Contradiction:

Stability of the object's compositionVSEase of manufacture

Solution Approach 1:

The rotor hub is designed to serve multiple functions: it provides radial support for the input member through its bearing installation and simultaneously serves as a mounting base for the engine clutch. This multi-functionality reduces the need for separate dedicated components, simplifying the manufacturing process while maintaining stable axial balance.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Device complexity

If the input member is not supported in the axial direction, then the structure is simplified, but the tooth part is abraded or damaged

Engineering Contradiction:

Improvesupport structureVSAvoidtooth part durability

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

A bearing is introduced as an intermediary component between the input member and the rotor hub/housing. This bearing specifically provides axial support to the input member, preventing direct contact and abrasion between the input member's tooth part and other components, thereby protecting the tooth part from damage while maintaining structural simplicity.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS12257903B2Hybrid driving module

Publication Date: 2025.03.25 VALEO KAPEC CO LTD

AI summary

The present invention relates to a hybrid driving module, in which an input member is aligned in a radial direction and/or an axial direction by a rotor hub, and thus the hybrid driving module may be easily assembled and ensure the high axial balance and the operability and durability of the engine clutch. In the hybrid driving module, the input member may be aligned at least in the radial direction or in the axial direction by a central shaft extension part of the rotor hub. A bearing configured to support a rotation and thrust may be installed between the central shaft extension part and the input member. The input member may be supported to be rotatable relative to a housing. The input member may be aligned in the radial direction and/or the axial direction by the housing.