Electrical Connection Assembly Spring Pitch Design
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Solution Overview
Problem
Conventional electrical connection assemblies have complex assembly processes and high production costs due to numerous components, and they are prone to fractures during the fixing process with circuit boards due to torque issues.
Innovation Solution
An electrical connection assembly featuring a conductive rod main body with a limiting protrusion and a spring structure with varying pitches and a spirally rotating wire body, where the spring is sleeved around the main body, providing an elastic returning force and a larger contact area for secure fixation without fracturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional probe assembly includes multiple components (shell, contacting members, spring), then the electrical connection function is achieved, but the assembly process becomes complicated and production cost increases
Solution Approach 1:
The patent combines the shell, contacting members, and spring into an integrated structure where the spring is directly formed with the contacting members, eliminating the need for separate assembly of multiple components while maintaining the electrical connection function
Solution Approach 2:
The spring structure serves multiple functions simultaneously: it provides elastic force for contact, acts as the contacting member itself, and integrates the shell structure, reducing the need for separate specialized components
2Device complexity
If the contacting structure is designed as a simple rod structure with small end surface, then the assembly is simpler, but the contacting structure is prone to incorrect fixation and fracture under torque
Solution Approach 1:
The contacting member is designed with a spherical end surface instead of a flat or pointed rod end, which increases the contact area with the circuit board pad, distributes the applied force more evenly, and prevents incorrect fixation while maintaining structural simplicity
Solution Approach 2:
The spring structure provides elastic cushioning that absorbs and distributes the torque and force applied during fixation, preventing stress concentration at the connection position between the contacting structure and spring, thereby preventing fracture before it occurs
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
Simplifies the assembly process, reduces production costs, and enhances the structural integrity of the connection, preventing fractures and ensuring correct fixation with circuit boards.
Implementation Method 1
When one end of the spring is fixed and another end of the spring is pressed, the elastic section elastically deforms, and when the spring is no longer pressed, an elastic returning force generated by the elastic section allows the spring to return to an initial position
Data Source
AI summary
An electrical connection assembly includes a main body and a spring. One end of the main body is configured to be in contact with a device under test. The spring is sleeved around the main body. Two ends of the spring are respectively defined as a first end and a second end. The first end is abutted against a limiting protrusion, and a concealed section of the main body is correspondingly arranged inside of the spring. The spring has a first tightly-coiled section, an elastic section, and a second tightly-coiled section in sequence from the first end to the second end. A pitch of the spring within the elastic section is greater than a pitch of the spring within the first tightly-coiled section, and the pitch of the spring within the elastic section is greater than a pitch of the spring within the second tightly-coiled section.