Electronic Control Cover Assembly for Dust-Sealed Snap Fit
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Solution Overview
Problem
Existing electronic control devices face challenges with complex and costly manufacturing processes, difficulty in disassembly, incomplete dust blocking, limited design freedom, and poor grip feeling due to fusion bonding or screw fastening structures.
Innovation Solution
An electronic control device design featuring a hook fastening structure with a lower cover, intermediate cover, button cover, and upper cover, where the intermediate and button covers are made of hard plastic and soft rubber respectively, providing effective dust blocking and easy assembly/disassembly, while the rounded borders enhance design freedom and grip.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If fusion bonding or screw fastening structure is used, then shielding properties are improved, but manufacturing complexity and cost increase
Solution Approach 1:
The cover is divided into multiple separate components (first cover, second cover, third cover) that are coupled together through coupling portions. This segmentation allows each component to be manufactured independently using simple molding processes, while the assembled structure provides effective dust blocking without requiring complex fusion bonding or screw fastening.
2Object-affected harmful factors
If fusion bonding or screw fastening structure is used, then shielding properties are improved, but assembly and disassembly difficulty increase
Solution Approach 1:
The cover structure is segmented into multiple coupled components with dedicated coupling portions. These coupling portions enable simple snap-fit assembly and disassembly operations, eliminating the need for fusion bonding or screw fastening while maintaining effective dust blocking capabilities.
Solution Approach 2:
The coupling portions act as intermediary elements between the cover components. These coupling portions facilitate easy connection and separation of the first, second, and third covers, enabling straightforward assembly and disassembly while maintaining the sealed structure for dust protection.
3Object-affected harmful factors
If fusion bonding is used, then shielding properties are improved, but repairability and component replacement difficulty increase
Solution Approach 1:
The cover is segmented into replaceable modular components (first cover, second cover, third cover) connected through coupling portions. This modular design allows individual components to be easily removed and replaced for repair or maintenance, unlike fusion-bonded structures where the entire assembly must be replaced.
4Strength
If fusion bonding or screw fastening is used, then structural strength is improved, but design freedom and grip feeling are limited
Solution Approach 1:
The cover structure is segmented into multiple molded components that can be independently designed and shaped. The coupling portions provide sufficient structural strength while allowing greater design freedom in the shape and configuration of each component, including rounded outer borders for improved grip feeling.
Solution Approach 2:
The design employs parameter changes in the coupling portions (such as hook shapes, engagement depths, and material properties) to achieve adequate structural strength without relying on fusion bonding or screw fastening, thereby enabling greater design freedom and improved ergonomic features like rounded borders.
Data Source
AI summary
An electronic control device according to an embodiment of the present disclosure comprises a lower cover including a side wall with a first coupling portion and a second coupling portion; a circuit board arranged inside the side wall of the lower cover and having on the upper surface thereof a button; a middle cover provided with a third coupling portion coupled to the first coupling portion and a first button hole, and coupled to the lower cover by coupling of the third coupling portion to the first coupling portion; a button cover arranged on the upper surface of the middle cover, covering the first button hole, and having a protrusion portion; and an upper cover including a side wall provided with a fourth coupling portion coupled to the second coupling portion, the upper cover provided with a second button hole, and covering the button cover and the middle cover.