Electrical Contact With Overlapping Wing Portions
Solution Overview
Problem
Conventional electrical contacts used to connect a CPU with a PCB face manufacturing difficulties due to the small thickness of the upper contact's base portion, which limits the distance between the lower contact's arms and the base, making reliable connection and manufacturing challenging.
Innovation Solution
The electrical contact design includes an upper contact with a base portion and an additional portion that overlaps, allowing the lower contact's arms to securely contact both, enhancing manufacturing ease and connection reliability by increasing the arm distance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the base portion thickness is kept small, then the electrical contact structure remains compact, but the distance between the arms and base portion becomes insufficient making manufacturing difficult
Solution Approach 1:
The patent extends the base portion in the horizontal direction (another dimension) by adding wing portions that protrude laterally from the main base. This increases the available distance between arms and base portion without increasing the vertical thickness, thereby improving manufacturability while maintaining compact vertical profile.
Solution Approach 2:
The base portion is segmented into a main base area and lateral wing portions. This segmentation allows the structure to provide extended contact surfaces and increased arm-to-base distance in the horizontal plane, facilitating easier manufacturing and assembly while keeping the overall vertical thickness compact.
2Ease of manufacture
If the base portion thickness is increased, then the manufacturing ease improves, but the overall structure becomes bulkier
Solution Approach 1:
Instead of increasing vertical thickness, the solution adds wing portions that extend horizontally from the base. This provides the necessary structural extent for easy manufacturing while maintaining a compact vertical profile, effectively moving the solution to another dimension.
3Reliability
If the arm distance is increased for reliable connection, then the connection reliability improves, but the structure complexity increases
Solution Approach 1:
The base portion is divided into a central main base and lateral wing portions. This segmentation naturally creates extended contact surfaces and increased arm-to-base distance without requiring complex additional components, thereby improving reliability while maintaining relatively simple structure.
Solution Approach 2:
The wing portions are merged with the main base portion to form an integrated base structure. This combining approach provides extended arm-to-base distance for reliable connections while avoiding the complexity of separate attached components, as the wings are formed as integral parts of the base.
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
This design facilitates a stable and reliable electrical connection between the CPU and PCB, improving manufacturing feasibility and preventing disconnection issues, while allowing for easier assembly and operation.
Implementation Method 1
the elastic force of the spring will push the upper contact move upwardly to the initial stage
Data Source
AI summary
An electrical contact (100) comprises an upper contact (1), a lower contact (3) and a spring (2) located between the upper contact (1) and the lower contact (3), the upper contact (1) comprises a base portion (11) and an additional portion (15) bending from the base portion (11) and overlapping each other, the base portion (11) has a first contact portion (111) at a top end thereof, the lower contact (3) comprises a body portion (32) and a pair of arms (33) extending from the body portion (32), the body portion (32) has a second contact portion (321) at a bottom end thereof, the arms (33) contact with the base portion (11) and the additional portion (15).