Card Edge Connector Terminal With Segmented Contact And Support Portion
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Solution Overview
Problem
Card edge connectors face issues with deformation and contact failure due to external forces, leading to unstable electrical connections and reduced elastic force over repetitive loads.
Innovation Solution
A terminal design featuring a contact structure with multiple bending portions, inclined surfaces, and a support portion to limit deformation, along with a protrusion for point contact and load dispersion, ensures stable and reliable electrical connections by maintaining elastic force and preventing damage from external forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the contact part is spaced apart from the bottom plate and has a free end shape, then the ease of manufacture is improved, but the reliability deteriorates due to easy deformation by external force
Solution Approach 1:
The contact part is divided into multiple functional segments: a first bending portion for elastic deformation, a first inclined portion for load distribution, a second bending portion for contact pressure, a second inclined portion for structural support, and a support portion for limiting deformation. This segmentation allows each part to perform its specific function optimally while maintaining overall reliability.
Solution Approach 2:
The contact part incorporates dynamic elements including the first bending portion that elastically deforms under load, the support portion that dynamically limits deformation through contact with the body, and the barrel that provides rotational freedom. These dynamic characteristics enable the contact part to adapt to external forces while maintaining reliable contact.
2Adaptability or versatility
If the contact part has a free end shape, then the adaptability is improved, but the strength deteriorates due to deformation under continuous repeated load
Solution Approach 1:
The contact part is segmented into multiple functional portions including the first bending portion for elastic deformation, the second bending portion for contact pressure, the support portion for limiting deformation, and the barrel for rotational freedom. This segmentation maintains design flexibility while ensuring structural strength through distributed load paths.
Solution Approach 2:
The contact part utilizes dynamic characteristics through the first bending portion that elastically deforms to absorb repeated loads, the support portion that dynamically engages with the body to limit excessive deformation, and the barrel that provides rotational adaptability. These dynamic elements preserve elastic force under continuous operation.
3Reliability
If the contact part is pressed against the board, then the electrical connection is improved, but the contact part deforms due to applied load
Solution Approach 1:
The contact part is divided into specialized segments: the second bending portion that contacts the board to ensure electrical connection, the first inclined portion that distributes the applied load, and the support portion that limits overall deformation. This segmentation allows the contact surface to maintain proper shape while ensuring reliable electrical connection.
Solution Approach 2:
Different portions of the contact part have specialized local properties: the second bending portion is designed for optimal contact pressure with the board, the first inclined portion distributes load locally, and the support portion provides localized deformation control. This local quality optimization ensures both good electrical connection and minimal 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
The terminal effectively disperses load stress, maintains contact performance under repetitive loads, and prevents deformation, ensuring stable electrical connections and improved design flexibility.
Implementation Method 1
a first bending portion bent backwardly from the front end of the body and elastic-deformed when being in contact with the board
Implementation Method 2
a support portion bent at a front end of the second inclined portion and limiting the deformation of the first bending portion when being in contact with the body
Implementation Method 3
A protrusion portion for a point contact with the board may be formed at a middle end of the second bending portion in a width direction of the second bending portion
Data Source
AI summary
The present disclosure relates to a terminal capable of preventing deformation due to a load applied upon being in contact with a board, and the terminal includes a body, and a contact positioned inside the body and being in contact with the strip of the board. The contact includes a first bending portion bent backwardly from the front end of the body and elastic-deformed when being in contact with the board, a first inclined portion extending backwardly from the first bending portion, a second bending portion bent forwardly from a rear end of the first inclined portion and being in contact with the board, a second inclined portion extending forwardly from the second bending portion, and a support portion bent at a front end of the second inclined portion and limiting the deformation of the first bending portion when being in contact with the body.