Connector Spacer Chamfer and Stopping Wall Design
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Solution Overview
Problem
Existing cable end connectors face interference issues during the mounting of the spacer and insulative body, making the installation process inconvenient.
Innovation Solution
Incorporating an intermediate chamfer on the spacer with stopping walls on either side to prevent interference and ensure proper alignment, while also preventing molten plastic from entering the insulative body during molding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the back end of the insulative body is designed with a ladder shape, then the structural strength is improved, but interference occurs during mounting of the spacer resulting in inconvenient installation
Solution Approach 1:
The spacer is divided into multiple sections including a mounting end with intermediate chamfers and stopping walls. This segmentation allows the mounting end to be specifically designed for easy alignment and insertion onto the ladder-shaped back end of the insulative body, while other parts of the spacer maintain their structural functions. The intermediate chamfers create a tapered guide surface that facilitates smooth mounting without interference.
Solution Approach 2:
The intermediate chamfer acts as an intermediary geometric feature between the mounting surface of the spacer and the ladder-shaped back end of the insulative body. This chamfered transition surface mediates the connection by providing a gradual alignment path that eliminates sharp edges and potential interference points, enabling smooth insertion while maintaining the structural integrity of both components.
2Reliability
If the insulative housing is molded to enclose the insulative body and spacer, then the encapsulation and protection are improved, but molten plastic may flow into the insulative body affecting electrical connection
Solution Approach 1:
Stopping walls are预先 constructed at the interface between the spacer and insulative body before the molding process. These stopping walls create preliminary barriers that redirect molten plastic flow away from the insulative body during injection molding. By preparing these protective structures in advance, the design prevents plastic intrusion that would otherwise compromise electrical connections.
Solution Approach 2:
The stopping walls convert the potentially harmful molten plastic flow into a beneficial containment feature. By strategically positioning these walls, the design utilizes the molten plastic's natural flow direction to fill the housing cavity while the stopping walls redirect any plastic that might otherwise intrude into the insulative body, effectively transforming a harmful effect into a controlled molding process feature.
Data Source
AI summary
A cable end connector includes an insulative body, a number of terminals received in the insulative body, a spacer mounted behind the insulative body, and an insulative housing molded to enclose the inuslative body and the spacer. The spacer includes an intermediate chamfer at a mounting end thereof to prevent interference during mounting of the spacer to the insulative body. A stopping wall is disposed at two opposite sides of the chamfer to prevent molten plastics from flowing into the insulative body during molding the insulative housing.


