Bent Electrical Connection Member for Stress-Resistant Clamping
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing electrical connection members in electronic devices experience stress concentration and disconnection issues due to deformation caused by clamping forces, especially when used with flexible substrates.
Innovation Solution
The electronic device incorporates an electrical connection member with a first fixing portion that includes a first bent portion and a second bent portion, forming an inverse "V" shape. This design stabilizes the connection by distributing the clamping force effectively and reducing stress concentration on the flexible substrate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electrical connection member uses a tension structure to prevent loosening after clamping, then the clamping reliability is improved, but deformation occurs during clamping that delivers stress concentration to the flexible substrate
Solution Approach 1:
The electrical connection member is segmented into distinct functional portions: a first fixing portion for clamping to the conductive structure, a connection portion, and a second fixing portion for connection to the flexible substrate. This segmentation allows the clamping function and the substrate connection function to be spatially separated, preventing stress concentration at the substrate interface while maintaining clamping reliability through the tension structure in the first fixing portion.
Solution Approach 2:
The connection portion acts as an intermediary element between the first fixing portion (with tension structure) and the second fixing portion (connected to flexible substrate). This intermediary structure transmits the clamping force from the screw while isolating the flexible substrate from the stress concentration that would otherwise occur at the substrate connection point.
2Reliability
If the electrical connection member is clamped through a screw to conductive structures, then the electrical connection is secured, but the tension structure generates deformation that prevents accurate clamping at corresponding locations
Solution Approach 1:
By separating the tension structure into the first fixing portion and connecting it to the flexible substrate through the connection portion and second fixing portion, the invention enables accurate positioning at the substrate interface independent of the clamping deformation. The second fixing portion can be precisely positioned and fixed to the substrate without being affected by the deformation occurring at the first fixing portion during screw clamping.
Data Source
AI summary
An electronic device includes a housing, a first substrate disposed in an internal space of the housing, a conductive structure disposed at a location isolated from the first substrate, a second substrate electrically connected to the conductive structure and the first substrate, and an electrical connection member electrically connecting the second substrate to the conductive structure. The electrical connection member may include a first fixing portion fixed to the conductive structure, a second fixing portion fixed to the second substrate, and a connection portion connecting the first fixing portion and the second fixing portion. The first fixing portion includes a first bent portion bent along a first bent line from a neck portion, that is, a boundary area with the connection portion, and a second bent portion bent along a second bent line from the first bent portion. The first bent portion is bent in a first direction becoming distant from the conductive structure, and the second bent portion is bent in a second direction opposite to the first direction.