Rotating Cable Adaptor Preventing Torque Transmission
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Solution Overview
Problem
Conventional cable adaptors fail to prevent torque transmission between electrical connectors and cables, leading to weakened connections and potential damage due to twisting or rotation, which limits their useful life.
Innovation Solution
A cable adaptor design featuring a housing with a longitudinal through channel and a freely rotating insert, where the insert is retained by pins within the housing, allowing for independent rotation without torque transmission, providing strain relief and protection from contaminants while preventing torque transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a screw fitting and end cap combination is used to connect cable with connector, then strain relief and protection from contaminants is achieved, but torque is transmitted between connector and cable causing connection weakening and damage
Solution Approach 1:
A torque-absorbing element is introduced as an intermediary component between the connector and cable. This element independently rotates to absorb torque, preventing torque transmission to the cable while maintaining the mechanical connection. The intermediary element acts as a buffer that decouples the torque path while preserving the functional connection.
Solution Approach 2:
The connection system is made dynamic by allowing independent rotation of the torque-absorbing element. Instead of a rigid fixed connection that transmits torque, the system incorporates rotational freedom that enables the intermediate element to dynamically absorb torque through rotation, preventing stress buildup and connection failure.
2Stability of the object's composition
If a fixed rigid connection is used between housing and insert, then structural stability is achieved, but torque is transmitted causing connection damage
Solution Approach 1:
The rigid fixed connection is replaced with a dynamic rotational joint. The insert can independently rotate within the housing, transforming the static rigid structure into a dynamic system that absorbs torque through rotational movement while maintaining structural stability for strain relief and contamination protection.
Solution Approach 2:
The rotational joint acts as an intermediary mechanism between the stable housing structure and the insert. It preserves the structural stability of the overall assembly while preventing torque transmission that would damage the connection, by allowing controlled rotation at the joint interface.
3Object-affected harmful factors
If strain relief and protection functions are provided, then cable protection is achieved, but torque transmission limits useful life
Solution Approach 1:
The torque-absorbing rotational joint serves as a protective intermediary that extends the useful life of the adaptor. It maintains the protection functions (strain relief and contamination barrier) while eliminating torque transmission that would otherwise limit the component lifespan through connection weakening and damage.
Data Source
AI summary
An adaptor is provided for connecting an electrical cable with an electrical connector. The adaptor includes a housing and an insert which are coaxially arranged and connected for free rotation relative to each other. The outer surface of the insert contains an annular recess and at least one pin is arranged on an inner surface of the housing. When a portion of the insert including the recess is arranged within a portion of the housing, the pin is inserted into the recess to connect the insert with the housing while permitting rotation therebetween. The free rotation prevent torque from being transmitted to an electrical cable connected with the insert.