Multi-Part Electrical Cover Assembly With Snap-Fit Groove Locking
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Solution Overview
Problem
The production of multi-part covers for electrical installation devices is cost- and time-intensive due to the requirement for a two-component injection molding process, which fails to meet high demands for dimensional accuracy and appearance.
Innovation Solution
A multi-part cover comprising a first partial cover made of one material and a second partial cover made of a different material, connected via at least two locking element-groove connections, allowing for separate manufacturing processes and eliminating the need for two-component injection molding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a two-component injection molding process is used to produce multi-part covers, then dimensional accuracy and appearance quality are improved, but production cost and time increase
Solution Approach 1:
The cover is divided into multiple separate partial covers that can be manufactured independently using standard injection molding processes, then assembled together using locking element-groove connections. This segmentation allows each part to be produced efficiently while maintaining overall dimensional accuracy through precise connection geometry.
Solution Approach 2:
The connection between partial covers is achieved through locking elements that extend into grooves, creating a three-dimensional interlocking structure. This dimensional approach ensures precise positioning and gap control without requiring complex two-component molding processes.
2Manufacturing precision
If a two-component injection molding process is used to produce multi-part covers, then dimensional accuracy and appearance quality are improved, but production cost increases
Solution Approach 1:
The cover is divided into multiple separate partial covers that can be manufactured independently using standard injection molding processes, then assembled together using locking element-groove connections. This segmentation allows each part to be produced efficiently while maintaining overall dimensional accuracy through precise connection geometry.
Solution Approach 2:
The connection design uses specific geometric parameters of locking elements and grooves to achieve precise dimensional control and appearance quality. By optimizing the dimensions and tolerances of these connection features, high manufacturing precision is achieved without requiring expensive two-component molding processes.
3Adaptability or versatility
If multiple separate partial covers are used, then production flexibility and material selection are improved, but connection precision and appearance may worsen
Solution Approach 1:
The connection between partial covers is achieved through locking elements that extend into grooves, creating a three-dimensional interlocking structure. This dimensional approach ensures precise positioning and gap control without requiring complex two-component molding processes.
Solution Approach 2:
The connection design uses specific geometric parameters of locking elements and grooves to achieve precise dimensional control and appearance quality. By optimizing the dimensions and tolerances of these connection features, high manufacturing precision is achieved without requiring expensive two-component molding processes.
Data Source
Figure 1~2
Figure 3a~3b
AI summary
A multi-part cover (100) for an electrical installation device is disclosed, comprising a first partial cover (10) made of a first material; a second partial cover (60) made of a second material, wherein the second material differs from the first material in at least one material property; wherein the first partial cover (10) and the second partial cover (60) are connected to each other by means of at least two opposing snap-fit groove connections. A method for manufacturing a multi-part cover (100) for an electrical installation device is also disclosed.This comprises the steps of: manufacturing a first partial cover (10) from a first material, wherein the first partial cover has at least two opposing grooves; manufacturing a second partial cover (60) from a second material, wherein the second material differs from the first material in at least one material property, and wherein the second partial cover (60) has at least two opposing locking elements; and manufacturing at least two locking element groove connections between the at least two grooves of the first partial cover (10) and the at least two locking elements of the second partial cover (60).