Electrical Switching Apparatus Mechanical Referencing Member
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Solution Overview
Problem
Existing electrical switching devices face challenges in achieving precise positioning of auxiliary modules, leading to excessive dimensional dispersion and reduced reliability, particularly in multiphase configurations.
Innovation Solution
The electrical switching device incorporates a mechanical referencing member that allows precise positioning of auxiliary modules relative to the control mechanism and switching members, using a combination of mechanical connections and spacers to eliminate degrees of freedom, ensuring accurate alignment and reliable actuation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If auxiliary modules are positioned using conventional housing structures or cradles, then the device can accommodate auxiliary modules, but excessive dimensional dispersion remains between various parts of the apparatus
Solution Approach 1:
A mechanical referencing member is introduced as an intermediary element between the housing and auxiliary modules. This referencing member serves as a common reference for positioning multiple auxiliary modules and the control mechanism, eliminating dimensional dispersion by providing a unified positioning基准. The referencing member mechanically couples all components to a single reference frame, ensuring precise relative positioning throughout the device.
Solution Approach 2:
The mechanical referencing member serves multiple functions simultaneously: it positions auxiliary modules relative to the housing, positions the control mechanism relative to the housing, and establishes precise relative positioning between auxiliary modules and the control mechanism. This multi-functional referencing system eliminates the need for separate positioning mechanisms for each component.
2Reliability
If auxiliary modules are positioned precisely to ensure proper mechanical action on the control mechanism, then the reliability improves, but the device complexity increases due to additional positioning structures
Solution Approach 1:
The mechanical referencing member serves multiple functions simultaneously: it positions auxiliary modules relative to the housing, positions the control mechanism relative to the housing, and establishes precise relative positioning between auxiliary modules and the control mechanism. This multi-functional referencing system eliminates the need for separate positioning mechanisms for each component.
Solution Approach 2:
The positioning functions for multiple components (auxiliary modules and control mechanism) are merged into a single mechanical referencing member. Instead of having separate positioning structures for each component, all positioning requirements are consolidated through this common referencing element, reducing overall device complexity while maintaining precision.
Data Source
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AI summary
This electrical switching device (10) comprises: - a protective housing (15), - at least one switching element (20A, 20B, 20C) capable of switching between a first position allowing the passage of current and a second position preventing the passage of current, - a control mechanism (25) for the control or controls of each switching element (20A, 20B, 20C), and - at least one auxiliary module (35) disposed in the housing (15), the auxiliary module (35) being removable from the housing (15) and configured to implement a function associated with the control mechanism (25). The electrical switching device (10) includes a mechanical referencing element (30) common to the control mechanism (25) and each auxiliary module (35), for positioning the control mechanism (25) and each auxiliary module (35) in the housing (15).