Sliding Backshell Assembly for Screw-Free Connector Strain Relief
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Solution Overview
Problem
Existing backshells for electrical connectors require multiple pieces that need to be secured with screws, which complicates assembly, requires careful torque control, and is time-consuming, and often limited to specific connector types.
Innovation Solution
A backshell assembly comprising multiple components that slide together without screws, allowing for easy assembly by sliding interconnection, providing strain relief for wires, and integrating with various connector types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If screws are used to secure backshell components together, then the backshell can be assembled, but the assembly process becomes time-consuming and requires careful torque control
Solution Approach 1:
The patent replaces the traditional screw-based mechanical fastening system with a snap-fit mechanism featuring resilient arms that engage with corresponding features on the backshell components. This substitution eliminates the need for torque-controlled screw tightening while maintaining secure assembly through elastic deformation and mechanical interlocking of the resilient arms with the backshell housing.
2Reliability
If multiple backshell components are used, then the backshell can be assembled, but the assembly complexity increases
Solution Approach 1:
The patent combines multiple backshell components into a more integrated assembly where resilient arms are attached to a common mounting plate that interfaces with the backshell housing. This merging reduces the number of discrete parts that need to be handled separately during assembly while maintaining the security benefits of multiple components through their coordinated snap-fit engagement.
3Reliability
If screws are used to secure backshell components, then the backshell can be assembled, but additional inspection time is required
Solution Approach 1:
The resilient arms provide self-indicating engagement features where the snap-fit connection inherently shows whether proper assembly has occurred. The mechanical interlocking and visible engagement of the resilient arms with the backshell housing eliminate the need for additional inspection steps required with screw assemblies, as the snap-fit mechanism either engages correctly or does not, providing immediate visual and tactile feedback.
4Reliability
If traditional backshells are used, then connector protection is provided, but they are limited to specific connector types
Solution Approach 1:
The backshell assembly is designed with a standardized interface and modular component structure that can accommodate various connector types. The resilient arms and mounting plate configuration can be adapted to different connector geometries while maintaining the same fundamental snap-fit assembly mechanism, enabling a single backshell design to serve multiple connector applications.
Data Source
AI summary
A backshell for an electrical connector and an electrical connector assembly including the connector and the backshell. The backshell is formed from several components that can be slid together to hold the electrical connector and contain portions of wires that are terminated in the electrical connector. A method of making such a connector is also disclosed.