Shield Can Fixing Device Double-Wall Structure
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Solution Overview
Problem
Existing fixing devices for shield cans on printed circuit boards face issues with reliability due to screw deviation, impact-induced displacement, and space constraints, particularly in slim-type products, while also compromising on maintenance and manufacturability.
Innovation Solution
A shield can fixing device with a base and bent panels featuring slits and insertion protrusions, which securely fasten the shield can to the printed circuit board using a double-wall structure, ensuring a strong bonding force and durability through a slit structure that allows for easy insertion and tension support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If a mechanical combining method using screws is used to fix the shield can, then maintenance is improved, but reliability deteriorates due to screw deviation under long-term use
Solution Approach 1:
The fixing device is divided into multiple components: a base plate, side walls, and a clip structure. This segmentation allows each component to perform its specific function - the base plate provides stable mounting, the side walls provide structural support, and the clip structure provides secure fastening without screws, thereby eliminating screw deviation while maintaining maintenanceability.
Solution Approach 2:
The clip structure acts as an intermediary element between the shield can and the printed circuit board. Instead of directly screwing the shield can to the board (which causes deviation), the clip mediates the connection, providing a reliable fixed state while allowing for easy maintenance by simply releasing the clip.
2Ease of repair
If a clip-type combining method is used to fix the shield can, then maintenance and manufacturing costs are improved, but reliability deteriorates due to deviation from the clip under impact
Solution Approach 1:
The invention merges the base plate and side walls into an integrated fixing device structure. The side walls are bent upwards from the base plate to form a enclosure that completely surrounds the shield can, creating a unified structure that provides both the clip-type ease of maintenance and the frame-type reliability against impact.
Solution Approach 2:
The side walls formed by bending upwards from the base plate create a protective enclosure before any impact occurs. This pre-formed structure acts as a cushioning barrier that prevents the shield can from deviating under impact, while still allowing for easy maintenance by simply opening the enclosure.
3Reliability
If a frame-type combining method is used to fix the shield can, then reliability is improved, but device complexity and space utilization worsen due to additional frame structure
Solution Approach 1:
The invention combines the frame structure and clip structure into a single integrated fixing device. The side walls are bent upwards from the base plate to form an enclosure that functions as both a frame providing structural support and a clip providing secure fastening, eliminating the need for separate frame and clip components.
Solution Approach 2:
The fixing device performs multiple functions through its integrated structure: the base plate provides mounting surface, the side walls provide structural support and impact protection, and the clip structure provides secure fastening. This multi-functionality reduces device complexity by eliminating the need for separate frame and clip components while maintaining high reliability.
4Ease of repair
If a mechanical combining method using screws is used to fix the shield can, then maintenance is improved, but space utilization worsens due to screw holes and assembly space
Solution Approach 1:
The fixing device uses a segmented structure with a base plate and bent side walls that form an enclosure. This segmentation allows the shield can to be inserted into the enclosed space formed by the side walls, maximizing space utilization while maintaining maintenanceability through the clip-release mechanism.
Solution Approach 2:
The shield can is nested within the enclosure formed by the base plate and bent side walls. The side walls are bent upwards to create an enclosed space that houses the shield can, maximizing space utilization while the clip structure provides easy maintenance access.
Data Source
AI summary
A shield can fixing device of an electronic device is provided. The fixing device includes a base having a specific length and attached to a shield can fixing line of the printed circuit board, a pair of panels, each of which is bent upwards and formed on the base to have a slit between them for inserting a lateral portion of the shield can, at least one opening portion formed in any one or both of the panels, and an insertion protrusion formed in the lateral portion located in a corresponding position to the opening portion in a protruding manner to ensure a fixing force of the shield can. The shield can fixing device is fixed by inserting a lateral portion of a shield can between double walls.