Retractable Connector Insulating Member Isolates Push Pin
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Solution Overview
Problem
Existing retractable terminals in electronic devices suffer from inductance effects during high-frequency signal transmission due to conductive components, leading to poor transmission quality and wear issues between metal push pins and insulative sleeves, affecting precision and stability.
Innovation Solution
A connector structure with a retractable terminal that uses an electrical insulating member to isolate the push pin from the elastic unit, preventing inductance effects and wear by sliding contact with a cut-out slot, allowing for effective high-frequency signal transmission while maintaining precision and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a metal spring and metal push pin are used to create a conductive circuit, then electrical conduction is achieved, but inductance effect occurs causing poor transmission of high frequency signal
Solution Approach 1:
An electrical insulating member is introduced as an intermediary between the metal push pin and the metal spring. This insulating member allows mechanical force transmission while blocking electrical conduction, thereby eliminating the inductance effect caused by the direct metal-to-metal contact path while maintaining the retractable function.
Solution Approach 2:
The contact path is segmented into separate functional zones: a metal push pin for mechanical actuation, an electrical insulating member for isolation, and a metal spring for elastic recovery. This segmentation separates the mechanical function from the electrical function, allowing each component to optimize its specific role without interfering with the other.
2Ease of operation
If a metal push pin is slidably attached to an insulative sleeve, then the retractable action is achieved, but wear out of the sleeve occurs over time affecting precision
Solution Approach 1:
The electrical insulating member serves as a mediator that the metal push pin slides against instead of directly contacting the insulative sleeve. This intermediate layer distributes the contact pressure and reduces direct wear on the sleeve, maintaining sliding precision over extended use while enabling the retractable motion.
3Object-affected harmful factors
If an electrical insulating member is added to isolate the push pin from the elastic unit, then inductance effect is prevented, but device complexity increases
Solution Approach 1:
The electrical insulating member is designed to perform multiple functions simultaneously: it provides electrical insulation to prevent inductance, serves as a sliding surface for the push pin to enable retractable action, and acts as a mechanical interface between the push pin and spring. By consolidating these functions into a single component, the overall device complexity is minimized.
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 solution enables efficient transmission of high-frequency signals and electricity with reduced inductance effects and wear, ensuring stable and precise retractable action by using an insulating member between the push pin and elastic unit, made from insulating materials like plastic.
Implementation Method 1
the electrical insulating member is covered and attached onto an outer of the attachment portion of the push pin and disposed between the push pin and the elastic unit in order to insulate an electrical conduction between the push pin and the elastic unit
Data Source
AI summary
A connector structure with a retractable terminal includes an insulative main body having a receiving portion and a through hole. A terminal assembly includes a push pin and a connecting terminal, the connecting terminal having a connecting portion, the push pin having a contact portion and an attachment portion, the contact portion protruded out of the through hole, the attachment portion disposed inside the receiving portion; an elastic unit arranged inside the receiving portion and indirectly abutted the push pin protruded out of the through hole; an electrical insulating member covering an outer of the attachment portion of the push pin and disposed between the push pin and the elastic unit for insulation; the electrical insulating member slidably contacts the receiving portion, and a cut-out slot formed on the electrical insulating member, the connecting portion of the connecting terminal penetrating the cut-out slot to electrically contact the push pin.