Functional Contactor Stopper for Alignment and Solder Control
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Solution Overview
Problem
Portable electronic devices with metal housings face issues such as static electricity damage, signal attenuation, and structural interference due to conductive gaskets or contactors, which also lead to defective products and safety concerns.
Innovation Solution
A functional contactor with a stopper function to ensure alignment and a soldering prevention function, featuring a conductive elastic portion and a second electrode with a stopper or coating layer to prevent solder exposure, minimizing structural interference and improving manufacturing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the area of electrode is increased to increase capacitance of functional device, then capacitance is improved, but printed solder exists in liquid state during lamination process causing conductive elastic portion to deviate from original position and produce defective products
Solution Approach 1:
The patent applies preliminary action by forming a stopper structure on the electrode before the soldering process. This stopper prevents solder from flowing into the peripheral area during the liquid state, thereby pre-preventing deviation of the conductive elastic portion and ensuring alignment precision is maintained even as electrode area increases for higher capacitance.
2Reliability
If conductive gasket or conductive contactor is used to connect metal housing and circuit board, then electrical contact and protection functions are achieved, but structural interference occurs due to coupling structure and functions are degraded
Solution Approach 1:
The patent merges the coupling structure with the electrode structure by integrating the stopper function directly into the electrode. This eliminates the need for separate coupling structures, thereby reducing structural interference while maintaining the protection function. The conductive elastic portion is directly laminated on the electrode with the integrated stopper, creating a unified structure that avoids functional degradation.
3Quantity of substance
If conductive gasket or conductive contactor is used to increase capacitance for smooth RF signal transfer, then signal transfer is improved, but static electricity may flow into internal circuit board and destroy circuitry
Solution Approach 1:
The patent applies local quality by creating a differentiated electrode structure with a stopper region that has different properties from the main electrode area. The stopper region prevents solder flow while the main electrode area maintains high capacitance for RF signal transfer. This local differentiation allows the structure to simultaneously achieve high capacitance and protection against static electricity damage.
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 solution stabilizes the coupling process, reduces defects, and enhances the transfer of communication signals while providing electrostatic discharge protection, improving the overall performance and safety of portable electronic devices.
Implementation Method 1
a conductive elastic portion configured to be in electrical contact with a conductor of an electronic device and have elasticity
Implementation Method 2
a second electrode on which the conductive elastic portion is laminated through solder
Data Source
AI summary
A functional contactor is provided. The functional contactor according to one embodiment of the present invention includes: a conductive elastic portion configured to be in electrical contact with a conductor of an electronic device and have elasticity; and a functional device including a first electrode electrically connected to a circuit board or the conductor of the electronic device and a second electrode on which the conductive elastic portion is laminated through solder. Here, the second electrode includes a stopper in which no electrode is formed to prevent the solder from being introduced into a periphery of a lamination region on which the conductive elastic portion is laminated.