Probe Socket Structure for Stable Preload and Contact Alignment
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Solution Overview
Problem
Existing sockets face challenges in stably generating preload due to warping of the upper resin plate, which affects the electrical contact between the lower plunger and the inspection substrate, making it difficult to maintain stable preload.
Innovation Solution
A socket design featuring an elastic probe with a conductor having a receiving portion, an insulator with tapered holes, and a support body with high rigidity to stabilize the preload by preventing warping and ensuring proper alignment of plungers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the upper resin plate is used to support the barrel, then the socket structure is simplified, but the upper resin plate warps under load causing unstable electrical contact
Solution Approach 1:
The support function is segmented from the upper resin plate to a dedicated support body made of high-rigidity material. The support body is positioned at a location远离 from the inspection substrate to prevent interference with the electrical contact between the lower plunger and the substrate, thus resolving the contradiction between structural simplicity and contact stability.
Solution Approach 2:
A support body acting as an intermediary component is introduced between the upper resin plate and the barrel. This intermediary provides the necessary mechanical support with high rigidity to prevent warping, while the upper resin plate maintains its simplified structure. The support body mediates the mechanical loads without affecting the electrical contact path.
2Adaptability or versatility
If the through hole diameter is increased to accommodate the barrel, then the coaxial probe configuration is achieved, but the upper resin plate becomes more prone to warping
Solution Approach 1:
The support function is separated from the upper resin plate to a dedicated support body, allowing the through hole diameter to be increased for coaxial probe configuration without compromising the upper resin plate's rigidity. The support body bears the mechanical loads while the upper resin plate maintains its structural integrity.
Solution Approach 2:
The socket employs a composite structure combining the upper resin plate (for insulation and basic support) with a support body made of high-rigidity material (for mechanical strength). This composite approach enables the through hole to be sufficiently large for coaxial configuration while the support body prevents warping of the resin plate.
3Force
If preload is generated by compressing the spring, then electrical contact is established, but warping of the upper resin plate reduces compression and destabilizes the contact
Solution Approach 1:
The support body serves as an intermediary that stabilizes the mechanical structure, preventing warping of the upper resin plate that would otherwise reduce spring compression. By providing a rigid support framework, the support body ensures that the spring compression remains stable and the preload force is consistently maintained for reliable electrical contact.
Solution Approach 2:
Instead of relying on the upper resin plate to provide both support and maintain compression, the invention inverts the approach by using a dedicated support body for support functions. This allows the spring compression to be maintained independently without being compromised by resin plate deformation.
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
Stable preload generation is achieved, improving electrical contact reliability, reducing electrical resistance, and enhancing high-frequency characteristics while minimizing component costs and assembly complexity.
Implementation Method 1
the spring provided in the space inside the barrel is compressed by the force received by the upper end portion of the barrel from the upper resin plate and the force received by the lower end portion of the lower plunger from the inspection substrate. The preload is generated as the spring is compressed.
Implementation Method 2
an elastic probe
Data Source
AI summary
A socket including an elastic probe and a conductor through which the probe extends, in which the conductor has a receiving portion for receiving the probe.