Electrical Contactor Screw Alignment Using a Movable Threaded Element
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Classical electrical contactors using single-threaded screws face alignment issues during screwing and unscrewing, leading to potential misalignment and damage.
Innovation Solution
An electrical contactor design featuring a contactor housing with access portions for two-threaded screws, including a movable element with a second screw reception portion that aligns with the screw threads along the screwing axis, preventing misalignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two-threaded screws are used to improve connection reliability, then screwing stability is improved, but alignment difficulty increases due to complex screw and reception structure
Solution Approach 1:
The movable element is designed to move along the screwing axis dynamically during the screwing process. This movement allows the second screw reception portion to automatically align with the corresponding screw thread, converting a static alignment problem into a dynamic self-adjusting process that maintains both reliability and ease of operation
Solution Approach 2:
The movable element performs self-alignment through its own movement along the screwing axis. The design enables the reception portion to automatically position itself correctly relative to the two-threaded screw without requiring external alignment tools or complex guiding mechanisms, thus improving ease of operation while maintaining the reliability benefits of two-threaded screws
2Reliability
If two-threaded screws are used to prevent misalignment, then connection reliability is improved, but device complexity increases due to additional screw reception portions
Solution Approach 1:
Instead of providing two separate fixed reception portions that would increase structural complexity, the invention uses a single movable element that dynamically positions its reception portion along the screwing axis. This reduces the number of static components while achieving the same alignment precision through controlled movement
Solution Approach 2:
The movable element serves multiple functions: it provides the screw reception portion, enables alignment through its movement capability, and guides the screw along the screwing axis. This multi-functionality reduces the overall device complexity compared to having separate dedicated components for each function
Data Source
Figure 1
Figure 2
Figure 3
AI summary
An electrical contactor (10) comprising, a contactor housing (11) comprising at least one access portion (13), configured to receive and guide at least one two-threaded screw (50), wherein the access portion (13) comprises a first screw reception portion (15) configured to receive at least one first screw thread (51) of the screw (50), wherein the contactor housing (11) further comprises at least one movable element (30) arranged at the access portion (13) and comprising a second screw reception portion (17) configured to receive at least one second screw thread (53) of the screw (50), different to the first screw thread (51), and wherein the movable element (30) is movable along a screwing axis (200).