FPCB Buffer Structure for Impact-Resistant Connector Reliability
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Solution Overview
Problem
Existing flexible printed circuit boards (FPCBs) in electronic devices are vulnerable to damage from impacts and shocks, which can lead to connector failure and reduced device reliability.
Innovation Solution
Incorporation of shock absorbers to elastically support the FPCB, distributing stress and reducing damage by absorbing external disturbances such as vibrations and shocks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If FPCB is made flexible to connect components, then adaptability is improved, but reliability deteriorates due to vulnerability to impact damage
Solution Approach 1:
The patent applies beforehand cushioning by pre-installing shock absorbers at critical locations on the FPCB before impact occurs. These shock absorbers include elastic bodies positioned at vulnerable areas such as connectors and bending sections, along with damping structures that are activated only when impact occurs. This allows the FPCB to maintain flexibility during normal operation while having protective measures already in place to absorb and dissipate impact energy, thus resolving the contradiction between flexibility and impact resistance.
2Reliability
If shock absorbers are added to protect FPCB, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent employs flexible shells and thin films by using thin elastic bodies and flexible damping structures that can be integrated into the FPCB layout without significantly increasing thickness or rigidity. These protective elements are designed as thin, flexible components that conform to the FPCB's flexible nature, providing impact protection while maintaining the overall flexibility and simplicity of the device structure. This approach avoids the need for bulky rigid protective enclosures.
Solution Approach 2:
The patent applies parameter changes by utilizing materials and structures with variable mechanical properties. The damping structures and elastic bodies are designed to remain flexible under normal conditions but exhibit increased stiffness and energy absorption capacity when subjected to impact forces. This dynamic parameter change allows the protective structures to adapt their mechanical properties based on loading conditions, providing effective protection without permanently increasing device complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The shock absorbers effectively reduce the risk of connector failure and enhance the reliability of FPCBs by distributing stress, thereby protecting the circuit board from damage.
Implementation Method 1
a deformable portion (722) configured to be deformed at least partially elastically
Implementation Method 2
shock absorbers that buffers an impact applied to a flexible printed circuit board (FPCB)
Data Source
Figure 1
Figure 2A
Figure 2B
AI summary
An electronic device may comprise: a first printed circuit board; a second printed circuit board; a flexible printed circuit board connected to each of the first printed circuit board and the second printed circuit board and extending between the first printed circuit board and the second printed circuit board; and a shock absorber configured to buffer the flexible printed circuit board.