Screwless Backshell Assembly for Fast Connector Enclosure
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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, increases inspection time, and limits compatibility with different connector types.
Innovation Solution
A backshell assembly comprising multiple components that slide together without screws, forming a secure enclosure around the connector and wires, ensuring strain relief and protection from moisture and debris.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If screws are used to secure backshell components together, then the backshell assembly is strong and secure, but the assembly process becomes complex and time-consuming
Solution Approach 1:
The patent replaces the screw-based mechanical fastening system with a snap-fit mechanism. The closure panel includes engagement features that mate with corresponding features on the receptacle, allowing the components to be secured through simple insertion and engagement rather than requiring multiple screws and torque control, thus reducing assembly complexity while maintaining structural integrity
Solution Approach 2:
The backshell components are designed with self-aligning and self-securing features. The closure panel automatically engages with the receptacle through the snap-fit mechanism, and the system includes self-contained strain relief structures that automatically position and secure wires without requiring additional fastening operations, making the assembly process more autonomous and simpler
2Reliability
If screws are used to secure backshell components, then the assembly is tight and secure, but inspection time increases due to need for torque control
Solution Approach 1:
The screw-based fastening system requiring torque control and inspection is replaced with a snap-fit engagement system. The engagement features provide audible or tactile feedback when properly secured, eliminating the need for torque measurement and complex inspection procedures while maintaining reliable assembly
Solution Approach 2:
The patent employs a disposable or single-use fastening mechanism where the engagement features are designed for one-time assembly without requiring adjustment or re-tightening. The snap-fit components are engineered to achieve proper engagement through simple insertion, eliminating the need for iterative tightening and inspection that characterizes screw-based systems
3Ease of operation
If backshell is constructed to be applied prior to wire connection, then assembly is simplified, but adaptability to different connector types is reduced
Solution Approach 1:
The backshell is divided into separate modular components: a receptacle portion that interfaces with the connector and a closure panel that seals the assembly. This segmentation allows the receptacle to be configured for different connector types while maintaining a standardized closure mechanism, enabling both ease of assembly and adaptability to various connectors
Solution Approach 2:
The closure panel and receptacle are designed with universal engagement features that can accommodate different connector types. The snap-fit mechanism and strain relief structures are configured to work with various wire arrangements and connector geometries, allowing the same backshell design to serve multiple connector applications
4Object-affected harmful factors
If multiple backshell pieces are used, then environmental protection is improved, but the number of components and assembly steps increases
Solution Approach 1:
The backshell is segmented into a receptacle and closure panel that work together to provide environmental protection. The receptacle contains the connector and wires while the closure panel seals the assembly, creating a protective enclosure that can be assembled from simple components without requiring complex multi-piece constructions
Data Source
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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.