Perforated Trim Plate for Electrical Apparatus

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Conventional cover plates for electrical equipment are prone to damage from dirt and scratches, lacking protection while also failing to enhance the aesthetic appearance.

Innovation Solution

A cover plate design featuring a superimposed rear plate and openwork perforated part, where the perforated part has multiple openings allowing the rear plate to be partially visible, providing protection and aesthetic enhancement, manufactured through processes like acid bath treatment or electroplating, and assembled with varnish application for insulation and durability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If the cover plate is made as a solid continuous structure, then it provides complete protection against dirt and scratches, but it cannot allow the rear plate to be visible and reduces aesthetic appeal

Engineering Contradiction:
Improveprotection against dirt and scratchesVSAvoidaesthetic appearance
Core Design Contradiction:
Object-affected harmful factorsVSShape

Solution Approach 1:

The front plate is designed with a perforated structure containing multiple openings, allowing the rear plate to be partially visible through it. This porous configuration provides protection while maintaining aesthetic appeal by enabling visibility of the rear plate's design elements.

Inventive Principle:
Principle #31Porous materials

Solution Approach 2:

The cover plate assembly combines a front plate with openings and a rear plate to form a composite structure. This composite design allows the front plate to provide protection while the rear plate contributes aesthetic value, resolving the contradiction between protection and appearance.

Inventive Principle:
Principle #40Composite materials

2Shape

If the cover plate is made with many openings to show the rear plate, then aesthetic appearance is enhanced, but protection against dirt and scratches is reduced

Engineering Contradiction:
Improveaesthetic appearanceVSAvoidprotection against dirt and scratches
Core Design Contradiction:
ShapeVSObject-affected harmful factors

Solution Approach 1:

The front plate incorporates a pattern of multiple openings that allow visibility of the rear plate for aesthetic purposes, while the remaining solid portions of the front plate continue to provide protection against dirt and scratches.

Inventive Principle:
Principle #31Porous materials

Solution Approach 2:

The front plate has different properties in different regions: areas with openings provide aesthetic visibility, while areas with solid material provide protection. This local differentiation resolves the contradiction between appearance and protection.

Inventive Principle:
Principle #3Local quality

3Ease of manufacture

If the cover plate is made as a single integrated piece, then manufacturing is simpler, but it cannot provide both protection and aesthetic enhancement through layered structure

Engineering Contradiction:
Improvemanufacturing simplicityVSAvoidaesthetic appearance
Core Design Contradiction:
Ease of manufactureVSShape

Solution Approach 1:

The cover plate is divided into a front plate with openings and a rear plate, allowing each component to be manufactured separately with optimized processes and then assembled. This segmentation enables aesthetic enhancement while maintaining manufacturing feasibility through modular production.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The front plate and rear plate are combined to form an integrated cover plate assembly that provides both protection and aesthetic enhancement, while each component can be manufactured independently using appropriate processes.

Inventive Principle:
Principle #5Merging (Combining)

4Object-affected harmful factors

If the cover plate uses a layered structure with front plate and rear plate, then aesthetic appearance and protection are improved, but device complexity increases

Engineering Contradiction:
Improveprotection and aesthetic appearanceVSAvoidstructural complexity
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The cover plate is segmented into a front plate and a rear plate, where the front plate provides protection and the rear plate provides aesthetic enhancement. This segmentation improves both protection and appearance while keeping each component relatively simple in design.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The front plate serves multiple functions: it provides protection against dirt and scratches while also serving as a decorative element with its perforated pattern. The rear plate similarly provides both structural support and aesthetic contribution, reducing the need for additional components.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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

The design protects the rear plate while maintaining visibility, enhancing the aesthetic appeal and durability of the cover plate, and ensuring the functional elements are securely fixed to the equipment.

Implementation Method 1

a sub-step of immersing the metal plate in an acid bath

Methodology Applied
Scientific EffectAcid etching: Oxidation

Implementation Method 2

a sub-step of immersing the support plate in an electrolytic bath

Methodology Applied
Scientific EffectElectroplating: Electroplating

Implementation Method 3

a sub-step of depositing a varnish on at least part of the cover plate

Methodology Applied
Scientific EffectAdhesion: Adhesive

Data Source

PatentEP3549217A1Trim plate, electrical apparatus comprising such a trim plate and process for manufacturing a trim plate
Publication Date: 2019.10.09 LEGRAND FRANCE SA

AI summary

The invention relates to a trim plate formed by the superimposition of an open-worked part (20) and a rear plate (10) which, together, define a passage for a functional portion of an electrical apparatus. The open-worked part (20) has at least one opening (26) through which the rear plate (10) is visible. An electrical apparatus comprising such a trim plate and a process for manufacturing a trim plate are also described.