Bellows Contactor Projection Contact Resistance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing contactors for integrated circuit inspection probes face challenges in ensuring a desired displacement amount while maintaining conductivity, as the meandering portion's limited folding times lead to increased electric resistance, restricting the length of the contactor.
Innovation Solution
A contactor design featuring a bellows body with a connecting projection that compresses to reduce contact resistance, utilizing linear-shaped and arc portions with projections to facilitate contact, and adjustable contact positions on the bellows body and fixed/movable portions to optimize conductivity and operational force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the bellows body is made long to ensure desired displacement amount, then the displacement amount is improved, but the contact resistance increases making it difficult for current to flow
Solution Approach 1:
A connecting projection is introduced as an intermediary conductive element that bridges the bellows body to itself, creating a dedicated current path that bypasses the high-resistance meandering portion and ensures reliable electrical connection during compression
Solution Approach 2:
The bellows body is divided into functional segments including linear-shaped intermediate portions for displacement and arc portions for connection, with the connecting projection strategically positioned to create separate current-carrying paths from the mechanical compression paths
2Length of moving object
If the number of folding times of the meandering portion is increased to ensure shrinkage amount, then the displacement amount is improved, but the device complexity increases
Solution Approach 1:
The bellows body is segmented into linear-shaped intermediate portions that provide displacement and arc portions that provide connection, eliminating the need for complex meandering folds while achieving the desired shrinkage amount
Solution Approach 2:
The design transitions from a two-dimensional meandering planar structure to a three-dimensional bellows structure with vertical compression capability, allowing displacement to be achieved through compression rather than folding
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 achieves reduced contact resistance and improved conductivity, allowing for a contactor that can maintain current flow while ensuring a desired displacement amount, with options for low operational force or high contact pressure depending on contact position.
Implementation Method 1
a bellows body (20), a fixed portion (30) connected to one end (21) of the bellows body (20), and a movable portion (40) connected to the other end (22) of the bellows body (20)
Data Source
Figure 1(A)~1(C)
Figure 2(A)~2(C)
Figure 3(A)~3(C)
AI summary
Provided is a contactor having desired conductivity while ensuring a predetermined displacement amount. To this end, the contactor has: a bellows body (20); a fixed portion (30) connected to one end (21) of the bellows body (20); and a movable portion (40) connected to the other end (22) of the bellows body (20). Then, the movable portion (40) is depressed to compress the bellows body (20) and bring a connecting projection (25), projectingly provided on the bellow body (20), into contact with the bellows body (20) itself.