Shield Chassis Clip for Flexible Printed Circuit Ground Reinforcement
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Solution Overview
Problem
Vehicle-mounted cameras face challenges in maintaining a reinforced ground connection, especially in environments with vibration, while also needing to mitigate electromagnetic interference and size constraints.
Innovation Solution
An electronic apparatus with a shield chassis that includes a sandwiching portion to securely connect a flexible printed circuit to both the board and the shield chassis, using a clip portion and reinforcing plate to ensure stable electrical contact, even in vibrating conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a flexible printed circuit is electrically connected to the shield chassis using a clip member, then electrical connection is maintained, but the connection stability deteriorates in high-vibration environments
Solution Approach 1:
The patent merges the clip member with the shield chassis to form an integrated structure. The clip member is formed as a projection that extends from the shield chassis, eliminating the need for separate fastening components. This integration ensures that the flexible printed circuit is securely夹持 to the shield chassis, maintaining stable electrical connection even in high-vibration environments.
Solution Approach 2:
The clip member is pre-formed as a projection on the shield chassis during the shielding chassis manufacturing process. This preliminary formation ensures that the clipping structure is already in place and properly positioned before the flexible printed circuit is installed, facilitating reliable electrical connection from the outset.
2Object-affected harmful factors
If the ground pattern is electrically connected to the shield chassis to reinforce the ground, then electromagnetic interference is reduced, but the device complexity increases
Solution Approach 1:
The patent combines multiple functions into the shield chassis structure itself. The shield chassis not only provides electromagnetic shielding but also incorporates the clip member for mechanical fastening and electrical connection. This merging reduces the number of separate components needed to achieve ground reinforcement and electromagnetic interference mitigation.
Solution Approach 2:
The shield chassis is designed to serve multiple purposes: electromagnetic shielding, mechanical support, electrical connection, and fastening of the flexible printed circuit. The clip member projection extends these multi-functional capabilities, allowing the shield chassis to simultaneously reinforce the ground and maintain stable electrical connection without adding separate dedicated components.
Data Source
AI summary
To provide an electronic apparatus, a camera apparatus, and a shield chassis to be installed in a vehicle and used, whose ground is reinforced. A flexible printed circuit includes an FPC extension portion which is a ground pattern portion extended from a terminal portion for electrically connecting to on the side of the board. On the other hand, a clip portion whose cross-section has an approximately C-shape and whose upper surface includes an opening formed therein is formed at an upper end edge of one wall surface of a shield chassis. A tongue portion of the FPC extension portion, which is inserted through the opening, is sandwiched by the clip portion, such that the FPC extension portion is fixed to the shield chassis.