Circuit Board Assembly Inflection Region Wire Strain
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Solution Overview
Problem
Conventional circuit board assemblies are prone to failure due to strain on the fixed end of the electric wire when the free segment is pulled by an external force, leading to breakage or solder failure over time.
Innovation Solution
A circuit board assembly design featuring a circuit board with specific turns and an inflection region where the electric wire is soldered, forming a loop that reduces strain by training the wire on the board when external forces are applied, preventing breakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electric wire is soldered directly to the circuit board without forming an inflection region, then the manufacturing process is simple, but the fixed end of the wire is prone to strain and breakage when the free segment is pulled
Solution Approach 1:
The patent applies curvature by forming an inflection region in the electric wire where the wire bends and changes direction. This curved configuration allows the wire to accommodate external forces applied to the free segment without transmitting excessive strain to the fixed end, thereby preventing breakage and solder failure while maintaining connection reliability.
Solution Approach 2:
The patent introduces a dimensional change by forming the inflection region in three-dimensional space, where the wire transitions from a linear arrangement to a configuration with vertical and horizontal components. This spatial arrangement creates a mechanical buffer that absorbs external forces, protecting the solder joint from tensile strain while maintaining electrical connectivity.
2Stability of the object's composition
If the electric wire is made rigid to maintain stable connection, then the connection stability is improved, but the wire cannot accommodate external forces and is more likely to break
Solution Approach 1:
The inflection region creates a curved configuration in the wire that allows flexible movement while maintaining connection stability. The curvature enables the wire to bend and absorb external forces without compromising the rigid solder joint, thus achieving both stability and breakage resistance simultaneously.
Solution Approach 2:
The patent introduces dynamic flexibility through the inflection region, allowing the wire to adapt its shape in response to external forces. This dynamic capability enables the wire to accommodate pulling forces on the free segment while keeping the fixed end stable, preventing both breakage and connection failure.
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 design effectively prevents strain on the fixed end of the electric wire, enhancing durability and reliability by maintaining the wire's connection to the circuit board even under external forces.
Implementation Method 1
an electric wire having a fixed end that is soldered to the circuit board
Data Source
AI summary
A circuit board assembly includes: a circuit board having opposite first and second surfaces and formed with a first through-hole defined by a hole-defining wall that extends between and that terminates at the first and second surfaces and that cooperates with the first and second surfaces to define first and second turns, respectively, the circuit board further having an abutting wall that extends between and that terminates at the first and second surfaces and that cooperates with the second surface to define a third turn; and an electric wire having a fixed end that is soldered to the circuit board, extending through the first through-hole, and passing over the first, second and third turns of the circuit board so as to form an inflection region between the first and second turns.