Compact Drive Wheel Set for Wire Storage

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Solution Overview

Problem

Existing drive wheel sets and wire storage frames occupy large spaces due to the arrangement of multiple motors, leading to inefficiencies in space utilization and potential product quality issues, particularly in cable manufacturing where increased pulling forces cause wear and thinning of cables.

Innovation Solution

The implementation of a drive wheel set with at least two external rotor motors installed on a common shaft, allowing for a compact design that minimizes space usage while enabling self-driving capabilities, reducing friction forces, and maintaining wire quality through precise speed control.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If multiple motors are arranged in parallel to drive multiple wire wheels, then the wire storage capacity increases, but the space occupied by the drive system increases significantly

Engineering Contradiction:

Improvewire storage capacityVSAvoidspace occupied by drive system

Core Design Contradiction:

Quantity of substanceVSVolume of moving object

Solution Approach 1:

Multiple motors are merged onto a single common shaft, with their external rotors positioned side-by-side. This combines what would traditionally be separate motor assemblies into one integrated unit, reducing the overall space required while maintaining the capability to drive multiple wire wheels independently

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The common shaft serves multiple functions simultaneously: it supports multiple external rotor motors, provides a mounting structure for all motors, enables synchronized or independent rotation of multiple wire wheels, and acts as the primary drive axis for the entire wire storage system

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Quantity of substance

If the number of master wire wheels and slave wire wheels is increased to enhance wire storage capacity, then the storage capacity improves, but the cable pulling force increases causing cable extension and quality degradation

Engineering Contradiction:

Improvewire storage capacityVSAvoidcable quality

Core Design Contradiction:

Quantity of substanceVSManufacturing precision

Solution Approach 1:

The traditional friction-based mechanical drive system is replaced with an electromagnetic drive system using external rotor motors. These motors directly drive the wire wheels through magnetic fields, eliminating the need for high cable pulling forces and friction-based power transmission, thereby preventing cable extension and quality degradation

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Quantity of substance

If the cable pulling force is increased to rotate more wire wheels, then more wire wheels can rotate to increase storage capacity, but the friction force between cables and wire wheels increases leading to wear and cutting of cable insulation

Engineering Contradiction:

Improvewire storage capacityVSAvoidcable wear and insulation cutting

Core Design Contradiction:

Quantity of substanceVSObject-affected harmful factors

Solution Approach 1:

The friction-based mechanical transmission is replaced with direct electromagnetic drive. The external rotor motors generate rotational force through magnetic fields, eliminating the need for high friction forces between cables and wire wheels. This substitution prevents cable wear and insulation cutting while maintaining the ability to rotate multiple wire wheels

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 compact design allows for efficient space utilization, reduces friction-related wear, and ensures high-quality wire storage by minimizing the need for excessive pulling forces, thereby enhancing the storage capacity and quality of cables.

Implementation Method 1

Each of the external rotor motors comprises a winding stator and an external rotor, the winding stator is fixed onto the common shaft, and the external rotor is disposed outside the winding stator and pivoted onto the common shaft

Methodology Applied

Scientific EffectElectromagnetic interaction: Electromagnetic Induction

Data Source

PatentEP3091643B1Drive wheel set, wire storage frame, guide wheel frame, traction mechanism and conveying mechanism

Publication Date: 2019.12.18 SHENZHEN WOER HEAT SHRINKABLE MATERIAL

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AI summary

Disclosed is a drive wheel set, comprising a common shaft and at least two external rotor motors installed on the common shaft. External rotors of the external rotor motors form drive wheels of the drive wheel set. Also disclosed are a vertical-type wire storage frame, a swing-type wire storage frame, a guide wheel frame, a traction mechanism and a multi-path conveying mechanism using the drive wheel set. The drive wheel set is small in size, occupies less space, and is suitable for a situation where a plurality of motors need to be driven but sufficient space is lacking.