Modular Protection Screen for Electric Cabinet Control Devices
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Solution Overview
Problem
Existing frame designs for switching devices, particularly circuit breakers, are complex, costly, and require numerous specialized tools and frames of different sizes, leading to high production and storage costs, as well as complex assembly processes.
Innovation Solution
A modular frame system composed of interchangeable frame segments that can be assembled in pairs to create frames of various sizes, using dovetail connections and spring clips for tool-free assembly, allowing for flexible sizing and universal compatibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single-component base frame with sealing lip is used for each switch size, then the frame provides complete protection and sealing, but the number of different frame types and storage costs increase significantly
Solution Approach 1:
The frame is divided into modular segments (base segments and cover segments) that can be combined in different configurations. Each segment is a standardized component that can be reused across multiple frame sizes, reducing the total number of unique parts needed while maintaining protection and sealing functionality.
Solution Approach 2:
The modular segments are designed to serve multiple functions and be used in various frame configurations. The same base segment and cover segment can be combined to create frames for different switch sizes, making each component universal rather than size-specific.
2Reliability
If complex construction and tool technology are used for frames, then the frame provides complete protection, but the manufacturing complexity and tool costs increase
Solution Approach 1:
By segmenting the frame into standardized base and cover segments, the manufacturing process is simplified. Each segment can be produced using the same basic tooling and processes, eliminating the need for complex, size-specific manufacturing operations while maintaining protective functionality.
Solution Approach 2:
The modular segments are designed as simple, inexpensive components that can be easily manufactured and replaced. The simplification of each segment's construction allows for cheaper manufacturing tools and processes, reducing overall system complexity.
3Reliability
If a rubber lip is attached to the frame, then sealing is improved, but the attachment process becomes complex
Solution Approach 1:
The rubber lip sealing function is integrated directly into the cover segment design rather than being a separate attachment. The cover segment incorporates the sealing mechanism as part of its structure, eliminating the need for separate rubber lip attachment steps and simplifying the overall assembly process.
4Reliability
If special tools are used for frame attachment in door openings, then proper installation is achieved, but the assembly process requires additional tools and complexity
Solution Approach 1:
The frame segments are designed with self-aligning and self-retaining features that allow for tool-free or minimal-tool assembly. The segments can be attached to door openings using simple fasteners or snap-fit mechanisms that do not require specialized installation tools, making the assembly process easier while maintaining installation quality.
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The invention relates to a protection screen (6) for a control device (2) on the through opening (4) of an electric cabinet (1). The invention also relates to a modular system for protection screens (6) and to a method for mounting a protection screen (6) consisting of elements of the modular system. The aim of the invention is to simplify a protection screen (6) in such a manner that said protection screen (6) has a modular structure so that it can be assembled from screen segments (7, 8) which are used in pairs. The assembly is carried out according to the desired size of the protection screen.