Coupling Attachment Layout for Flexible Driver Selection

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Solution Overview

Problem

Conventional driver and driven device couplings are limited by the load capacity of the bearing, restricting the freedom of choice in selecting compatible drivers.

Innovation Solution

A driver attachment featuring a coupling with a hollow input shaft and a solid output shaft, supported by a bearing that handles both thrust and radial loads, allowing the solid rotating shaft of the driver to be fixed to the hollow input shaft and the solid output shaft to be inserted into the driven device.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a conventional coupling structure is used to connect driver and driven device, then the bearing load capacity determines the system configuration, but the freedom of choice in selecting drivers is limited

Engineering Contradiction:
Improvefreedom of choice of driverVSAvoidbearing load capacity
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The coupling is divided into two separate shafts: a hollow input shaft connected to the driver and a solid output shaft connected to the driven device. This segmentation allows independent optimization of each shaft for its specific function while maintaining reliable load transmission through the bearing support structure.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The hollow input shaft is designed to accommodate the solid rotating shaft of the driver within its hollow interior. This nesting arrangement allows the driver shaft to be positioned concentrically within the coupling structure, enabling flexible driver selection while maintaining proper alignment and load transmission through the bearing.

Inventive Principle:
Principle #7Nested doll (Nesting)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This configuration enhances the freedom of choice in selecting drivers and driven devices by supporting various loads, minimizing lengthwise dimensions, and improving the overall mechanism's durability and accuracy.

Implementation Method 1

a bearing that supports a thrust load and a radial load of the coupling

Methodology Applied
Scientific EffectThrust load support:

Implementation Method 2

a bearing that supports a thrust load and a radial load of the coupling

Methodology Applied
Scientific EffectRadial load support:

Data Source

PatentEP4621254A9Driving device attachment
Publication Date: 2025.11.26 ORIENTAL MOTOR CO LTD
  • EP4621254A9 patent drawingFigure 1A~1B
  • EP4621254A9 patent drawingFigure 2
  • EP4621254A9 patent drawingFigure 3

AI summary

To improve the freedom of choice of a driver that can be assembled together with a driven device. A driver attachment 10 for coupling a driver 20 and a driven device 30, including: a coupling 1 including a hollow input shaft 1a1 and a solid output shaft 1b; and a bearing 3 that supports a thrust load and a radial load of the coupling, wherein a solid rotating shaft 21 of the driver is fixed to the hollow input shaft of the coupling, and the solid output shaft of the coupling is inserted into the hollow input shaft 31 of the driven device.