Electrical Contactor Screw Access Structure for Thread Alignment
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Solution Overview
Problem
Classical electrical contactors using two-threaded screws face alignment issues during screwing and unscrewing, leading to undesired forces and potential damage.
Innovation Solution
An electrical contactor design featuring a contactor housing with movable elements that align the screw threads with their respective reception portions along the screwing axis, preventing misalignment and absorbing any resulting forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two-threaded screws are used to secure electrical cables in contactors, then the connection reliability is improved, but alignment issues occur during screwing and unscrewing leading to undesired forces and potential damage
Solution Approach 1:
The patent applies the dynamics principle by making the access portion movable along the screwing axis. This allows the access portion to dynamically adjust its position to compensate for misalignment between the two-threaded screw and the screw reception portions during screwing and unscrewing operations, thereby preventing undesired forces and potential damage while maintaining connection reliability
Solution Approach 2:
The patent segments the contactor structure into a movable access portion and a stationary housing. The access portion is separated as an independent movable element that can shift along the screwing axis, allowing it to independently handle alignment compensation without affecting the overall structural integrity of the contactor
2Adaptability or versatility
If two-threaded screws are used with complex screw and reception structures, then connection versatility is improved, but the complexity of alignment during screwing operation increases
Solution Approach 1:
The movable access portion dynamically adapts to alignment variations during screwing operations, simplifying the overall alignment process despite the complexity of two-threaded screws. The movement capability automatically compensates for misalignment, reducing the operational complexity for users
Data Source
AI summary
An electrical contactor includes a contactor housing having at least one access portion configured to receive and guide at least one two-threaded screw, wherein the access portion comprises a first screw reception portion configured to receive at least one first screw thread of the screw, wherein the contactor housing further comprises at least one movable element arranged at the access portion and comprising a second screw reception portion configured to receive at least one second screw thread of the screw different to the first screw thread, and wherein the movable element is movable along a screwing axis.