Composite Probe Leader Rod Guide Plate Insertion

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Solution Overview

Problem

The challenge is to facilitate the insertion of a probe through two or more guide plates, particularly when the probe has a curved portion or undergoes warping during manufacturing, making it difficult to align and insert the probe correctly without causing damage.

Innovation Solution

The composite probe configuration includes a leader rod with a substantially straight shape that is inserted through the guide holes ahead of the probe body, allowing for easier alignment and insertion of the probe body through the guide plates. This configuration includes various embodiments with different lengths and shapes of the leader rod and connecting portions to accommodate various probe geometries and guide plate spacings.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a probe with a curved portion is inserted through two or more guide plates, then the probe can be supported to move up and down, but it is difficult to insert the probe through the guide holes of the second and subsequent guide plates due to posture change and positional shift

Engineering Contradiction:
Improveprobe support stabilityVSAvoidprobe insertion difficulty
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

A leader rod with a substantially straight shape is inserted through the guide holes of the first and second guide plates ahead of the probe body. This preliminary action guides the probe through the multiple guide plates by establishing the correct path and position before the curved probe body is inserted, preventing positional shifts and making insertion easier.

Inventive Principle:
Principle #10Preliminary action

2Ease of operation

If a probe with a curved portion is forced through the guide holes, then insertion may be achieved, but damage or deformation of the probe occurs

Engineering Contradiction:
Improveprobe insertion feasibilityVSAvoidprobe integrity
Core Design Contradiction:
Ease of operationVSStrength

Solution Approach 1:

The leader rod is inserted through the guide holes before the probe body, establishing the correct insertion path and preventing misalignment. This eliminates the need to force the probe through, thereby preventing damage or deformation while achieving successful insertion.

Inventive Principle:
Principle #10Preliminary action

3Ease of operation

If warping occurs during the manufacturing process of the probe, then the probe structure is compromised, but it is still difficult to insert the probe through the guide plates

Engineering Contradiction:
Improveprobe insertion difficultyVSAvoidprobe warping
Core Design Contradiction:
Ease of operationVSManufacturing precision

Solution Approach 1:

The leader rod acts as an intermediary element that facilitates the insertion of the probe body through the guide holes. Even if the probe body has warping or posture changes due to manufacturing issues, the straight leader rod maintains the correct path and guides the probe through, compensating for the manufacturing imperfections.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentUS20250085311A1Composite probe, method for attaching probe, and method for manufacturing probe card
Publication Date: 2025.03.13 NIHON DENSHIZAIRYO
  • US20250085311A1 patent drawing
  • US20250085311A1 patent drawing
  • US20250085311A1 patent drawing

AI summary

[Problem] The purpose of the present invention is to facilitate the insertion of a probe into two or more guide plates. [Solution] The present invention is provided with: a probe body 600 accommodated in a guide unit 30 for a probe card 1, the guide unit 30 comprising a first guide plate 301 and a second guide plate 302 disposed with a gap therebetween, and supported by a first guide hole 311 of the first guide plate 301 and a second guide hole 312 of the second guide plate 302; and a leader rod 610 that has a substantially linear shape with one end thereof connected to the probe body 600, that is inserted into the first guide hole 301 earlier than the probe body 600, and that can be separated from the probe body 600 after passing through the second guide hole 302.