Winged PCB Connecting Member for Torque-Resistant FRC Assembly
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Solution Overview
Problem
The flexible printed circuit board (FPCB)-type radio frequency (RF) cable (FRC) is prone to bending, tearing, or generating foreign materials during assembly due to excessive torque applied by fixing members like screws, which can compromise the integrity and performance of electronic devices.
Innovation Solution
The implementation of a connecting member with a wing-type feeding terminal and embossed portion design for the FRC, which distributes stress more evenly and prevents bending or tearing, even under high torque conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a fixing member (screw) is fastened to the FRC to fix it to the housing, then the FRC is securely attached to the housing, but the FRC may be bent, torn, or separated due to excessive torque applied during tightening
Solution Approach 1:
The connecting terminal is divided into multiple engagement portions (first engagement portion and second engagement portion) that distribute the fastening load across different areas of the FRC, preventing concentrated stress that would cause bending or tearing
Solution Approach 2:
Different portions of the connecting terminal have different structures optimized for their specific functions: the first engagement portion has a first width for securing to the housing, while the second engagement portion has a second width for connecting to the FRC, allowing each area to handle stress appropriately
2Productivity
If automation equipment fastens the fixing member by tightening in one direction with greater torque, then assembly efficiency is improved and manual work errors are prevented, but the FRC may be bent, torn, or generate foreign materials due to torque exceeding allowed limits
Solution Approach 1:
The connecting terminal is pre-designed with multiple engagement portions and specific width dimensions that automatically distribute and limit stress before the fastening process begins, preventing excessive torque damage even when automation equipment applies high torque
Solution Approach 2:
The connecting terminal acts as an intermediary component between the fixing member and the FRC, absorbing and distributing the mechanical stress from the screw fastening process to protect the FRC from direct excessive force
Data Source
Figure 1
Figure 2A
Figure 2B
AI summary
A printed circuit board module and an electronic device comprising same are provided. The electronic device comprises: a housing at least partially formed of a conductive portion; a support member; a printed circuit board configured to be disposed on at least one surface of the support member and configured to dispose at least one electronic component thereon; and a connecting member for electrical connection between the conductive portion of the housing and the electronic component, the connecting member including a base substrate and a connection terminal, wherein the connection terminal includes: a first portion fixed to the base substrate; and a second portion connected from the first portion and having a through-hole through which a fixing member can be fastened, wherein the second portion may include a wing portion protruding in one direction.