Gold Finger Connector Leaf Spring Structure to Prevent Loosening
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Solution Overview
Problem
Existing gold finger connectors with 'I'-type leaf springs are prone to loosening during insertion and pullout, leading to unstable contact point height and spring height, which affects electrical performance.
Innovation Solution
A highly stable gold finger wire end connector featuring U-shaped contact leaf springs with a backstop structure and contact structure, where the backstop structure is embedded in the shell and has a protrusion to prevent loosening, and the contact structure ensures stable contact with the gold finger PCB board.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If 'I'-type leaf springs are used for gold finger connectors, then the connector can be assembled, but the contact point height and spring height become unstable due to loosening during insertion and pullout
Solution Approach 1:
The leaf spring is divided into three distinct parts: a backstop structure for fixing, a connecting part, and a contact structure. This segmentation allows each part to perform its specific function independently, with the backstop structure preventing loosening while the contact structure maintains stable contact height, thereby resolving the technical contradiction between assembly feasibility and dimensional stability
Solution Approach 2:
The backstop structure is extracted and separated from the contact structure, with the backstop structure being embedded in the shell to provide fixing function. This extraction allows the contact structure to maintain its height stability independently while the backstop structure handles the loosening prevention, solving the contradiction between assembly and stability
2Ease of manufacture
If the backstop structure and contact point are arranged together in 'I'-type leaf springs, then assembly is simplified, but the contact point height becomes unstable due to piercing plastic impact during assembly
Solution Approach 1:
The leaf spring is segmented into a backstop structure, connecting part, and contact structure, with each segment having distinct functions. The backstop structure is embedded in the shell while the contact structure maintains precise height, allowing assembly simplicity while achieving manufacturing precision through functional separation
Solution Approach 2:
Different parts of the leaf spring are given different local qualities: the backstop structure has embedding features for fixing, the connecting part provides structural transition, and the contact structure has precise dimensional control. This local quality differentiation allows each part to optimize its function while maintaining overall assembly simplicity and contact height precision
Data Source
AI summary
The present invention relates to the technical field of connectors, in particular to a highly stable gold finger wire end connector. The connector includes a shell, at least one set of U-shaped contact leaf springs, and a wiring board, where the U-shaped contact leaf spring has a backstop structure and a contact structure, and the backstop structure is embedded in the shell and has no less than one protrusion. The backstop structure is specially arranged for fixing, and the contact structure is arranged for contact. The independent backstop structure for fixing reduces the impact from an axial force, which does not affect the leaf spring height of the other side during assembly, effectively prevents the U-shaped contact leaf spring from loosening, improves the stability of the connector, and ensures the service life and quality of the product.