Detachable Capacitor Module for Motor Driving Device Maintenance

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Solution Overview

Problem

The existing motor driving devices are cumbersome for users to replace broken capacitors, as they require specific tools and involve complex detachment processes, leading to increased difficulty and time in maintenance.

Innovation Solution

A motor driving device design that incorporates a detachable capacitor module, where capacitors are integrated within a compartment that can be easily removed and replaced by loosening fastening members and detaching the cover, allowing for straightforward access and replacement without specialized tools.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If capacitors are mounted using surface-mount technology or through hole technology, then the electronic circuit achieves stable operation, but the replacement of broken capacitors becomes troublesome and difficult requiring specific tools

Engineering Contradiction:
Improvestable operationVSAvoidreplacement difficulty
Core Design Contradiction:
ReliabilityVSEase of repair

Solution Approach 1:

The patent divides the capacitor assembly into a modular structure where the capacitor is mounted on a separate circuit board that can be detached as a complete unit. This segmentation allows the capacitor to remain securely mounted (maintaining reliability) while enabling easy removal of the entire circuit board module (improving repairability) without requiring individual capacitor replacement tools.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent extracts the capacitor from the main device housing by mounting it on a detachable circuit board that can be removed as a separate module. This extraction allows users to access and replace the capacitor without disassembling the entire device, significantly reducing repair difficulty while maintaining operational stability during use.

Inventive Principle:
Principle #2Taking out (Extraction)

2Volume of moving object

If capacitors are integrated within the device housing, then the device achieves compact structure, but the replacement process becomes time-consuming and complex

Engineering Contradiction:
Improvecompact structureVSAvoidmaintenance time
Core Design Contradiction:
Volume of moving objectVSLoss of time

Solution Approach 1:

The patent segments the capacitor assembly into a detachable circuit board module that maintains a compact integrated structure during normal operation. The circuit board with the capacitor mounted on it forms a self-contained unit that can be quickly removed and replaced, reducing maintenance time while preserving the compact design of the overall device.

Inventive Principle:
Principle #1Segmentation

3Reliability

If capacitors are mounted on electronic circuits using fixed mounting methods, then the electronic circuit achieves stable operation, but the replacement requires detaching from the circuit board making it troublesome

Engineering Contradiction:
Improvestable operationVSAvoidreplacement simplicity
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent segments the capacitor mounting structure into a detachable circuit board that can be removed as a complete module. The capacitor remains firmly mounted on the circuit board ensuring stable operation, while the circuit board itself can be easily detached from the device housing, making replacement simple and trouble-free without requiring users to work with individual capacitor connections.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentEP3570650B1Motor driving device
Publication Date: 2021.01.20 LI YUEH HAN
  • EP3570650B1 patent drawingFigure 1
  • EP3570650B1 patent drawingFigure 2
  • EP3570650B1 patent drawingFigure 3

AI summary

A motor driving device includes a housing unit (10), a capacitor module (20), and a driving module (30) . The housing unit (10) includes a first compartment (15) and a second compartment (16). The capacitor module (20) is detachably mounted in the first compartment (15) and includes a first circuit board (21), at least one capacitor (22) electrically connected to the first circuit board (21), and two first conducting members (23) electrically connected to the first circuit board (21). The driving module (30) is mounted in the second compartment (16) and includes a second circuit board (31) and two second conducting members (32) that are electrically connected to the second circuit board (31) and that are respectively, electrically and detachably connected to the first conducting members (23).