Drone PCB Connection Mechanism for Flip-Flight Vibration

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Solution Overview

Problem

Conventional drones with high-sensitivity camera modules experience damage to flexible printed circuit boards due to violent vibrations during flip flights, leading to potential breakage at the interface between flexible and hard printed circuit boards.

Innovation Solution

A circuit board connection mechanism featuring a base, positioning components, a flexure circuit board, and a hard substrate with a supporting structure and resilient recovering components, such as springs, to absorb vibrations and prevent damage during flight.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the flexible printed circuit board is fixed with the hard printed circuit board using conventional methods, then the circuit board connection is stable during normal flight, but the interface between the flexible and hard printed circuit boards may break during flip flight due to violent vibration

Engineering Contradiction:

Improvecircuit board connection reliabilityVSAvoidinterface strength between flexible and hard circuit boards

Core Design Contradiction:

ReliabilityVSStrength

Solution Approach 1:

The patent applies beforehand cushioning by introducing a recovering component (spring) between the hard substrate and base that can absorb violent vibrations before they reach the circuit board interface. The spring is pre-positioned to provide cushioning protection during flip flight maneuvers, preventing the interface between flexible and hard circuit boards from breaking due to shock loads.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

2Stability of the object's composition

If the circuit board is rigidly fixed to prevent movement, then connection stability is improved, but the circuit board cannot adapt to rapid changes in flight angles and may still suffer damage from vibration

Engineering Contradiction:

Improvecircuit board position stabilityVSAvoidadaptability to flight angle changes

Core Design Contradiction:

Stability of the object's compositionVSAdaptability or versatility

Solution Approach 1:

The patent applies dynamics by replacing rigid fixed connections with a dynamic spring-based recovering component. The spring allows the hard substrate to move dynamically in response to flight angle changes while maintaining stable electrical connections. This dynamic design enables the circuit board assembly to adapt to rapid flight maneuvers while the spring maintains positional stability through its elastic restoring force.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent uses the spring as an intermediary element between the hard substrate and base. This intermediary component mediates between the conflicting requirements of stability and adaptability by providing a flexible connection that maintains electrical continuity while allowing mechanical movement to accommodate flight angle changes.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Object-affected harmful factors

If the interface between flexible and hard circuit boards is made more robust, then vibration resistance is improved, but the device complexity and manufacturing difficulty increase

Engineering Contradiction:

Improvevibration resistanceVSAvoidcircuit board connection mechanism complexity

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The patent extracts the vibration absorption function from the circuit board interface itself and places it in a separate recovering component (spring). By taking out the shock absorption function from the FPCB-HPCB interface, the design protects the interface without adding complexity to the interface structure itself, maintaining simplicity while improving vibration resistance.

Inventive Principle:

Principle #2Taking out (Extraction)

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 mechanism provides dynamic adjustment and shock absorption, preventing breakage and separation of circuit boards, ensuring continuous contact and maintaining system functionality despite rapid changes in flight angles.

Implementation Method 1

a recovering component (28) between the hard substrate (26) and the base (20)... a resiliently deformed direction of the recovering component (28) is parallel to a planar normal vector (V1) of the hard substrate (26)

Methodology Applied

Scientific EffectElasticity: Elasticity

Data Source

PatentUS20250304294A1Circuit board connection mechanism and drone device

Publication Date: 2025.10.02 QISDA CORP

AI summary

A circuit board connection mechanism is applied to a drone device and includes a base, at least one positioning component, a flexure circuit board and a hard substrate. The positioning component includes a first section, a second section and a third section connected to each other. A width of the second section is smaller than a width of the first section and a width of the third section. The flexure circuit board is disposed on the hard substrate. The hard substrate includes a hole structure and a supporting structure connected to each other. A restraint annular structure of the supporting structure can be attached to the second section. A radial dimension of the restraint annular structure is smaller than the widths of the first section and the third section, and greater than the width of the second section.