Train Connector Insertion Needle Segmentation for Stable High-Speed Contact
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional train connectors are prone to needle disconnection during high-speed running and complex road conditions, and the disconnection methods often damage the retaining springs, making them unusable repeatedly.
Innovation Solution
An inserted connection member for train connectors is designed with an insertion needle, insulator, disconnection preventing pad, and extrusion block, featuring a positioning hole and inserted connection hole with a tapered segment and constant diameter segment, where the disconnection preventing pad and extrusion block provide continuous pressure to maintain stable contact and facilitate easy disconnection without damaging the springs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If self-locking or interlocking type insertion needle disconnection prevention methods are used, then needle disconnection is prevented during high speed running, but the retaining spring is damaged and loses elasticity when the needle is withdrawn, making it unusable repeatedly
Solution Approach 1:
The insertion needle is divided into multiple segments: a body portion, a positioning portion with external threads, and a connecting portion. The retaining spring only acts on the body portion during insertion, while the positioning portion provides thread engagement for secure connection. During withdrawal, the positioning portion can be unscrewed independently, allowing the retaining spring to be released without damage and reused.
Solution Approach 2:
The positioning portion with external threads acts as an intermediary mechanism between the insertion needle body and the socket. It provides a threaded engagement system that secures the connection during high-speed operation while allowing controlled withdrawal by unscrewing the positioning portion, thereby protecting the retaining spring from damage.
2Reliability
If conventional retaining spring methods are used, then the insertion needle is held in place, but a special tool is required to separate the socket from the plug, causing complexity and spring damage
Solution Approach 1:
The connection system transitions from a static spring-only retention mechanism to a dynamic system where the positioning portion can be rotated and unscrewed. This allows the connection to be secured during operation (spring compressed) and easily released when needed (positioning portion unscrewed), providing both reliability and operational ease without requiring special tools.
3Ease of operation
If the insertion needle is secured with a retaining spring in a retaining slot, then connection is maintained, but the needle is likely to generate disconnection during high speed running
Solution Approach 1:
The solution merges two retention mechanisms: the retaining spring provides initial insertion and holding force, while the positioning portion with external threads provides additional secure engagement through thread engagement with the socket. This combination ensures both easy installation (spring-loaded insertion) and high-speed reliability (threaded locking).
Data Source
AI summary
An inserted connection member for a train connector includes an insertion needle, an insulator, a disconnection preventing pad and an extrusion block. The insulator is sequentially provided with a positioning hole and an inserted connection hole in an axial direction. The insertion needle includes a line connecting segment, a positioning segment and an inserted connection segment which are connected sequentially, the line connecting segment and the positioning segment are arranged in the positioning hole. The disconnection preventing pad and the extrusion block are both sleeved on the line connecting segment, and the disconnection preventing pad includes a pad body and a boss arranged on the pad body. Thus, the insertion needle is ensured to maintain a stable contact even when the train is running at a high speed, and a disconnection preventing effect of the insertion needle is achieved.