Universal Plastic Mounting Plate for Star-Delta Wiring
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Solution Overview
Problem
Existing star-delta wiring solutions require custom metal mounting plates for each structure, leading to increased weight and cost, as well as the need for multiple reversing locks for different contactor configurations.
Innovation Solution
A universal plastic mounting plate designed for various star-delta wiring configurations, featuring interchangeable extension and additional parts for height adjustment and mechanical interlocking, allowing the same reversing locks to be used across different contactor sizes, and self-tapping plastic screws with metric nut backup for secure attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If custom metal mounting plates are used for each star-delta wiring structure, then the wiring can be securely mounted, but the weight and cost increase significantly
Solution Approach 1:
The patent employs a universal mounting plate design that can accommodate multiple star-delta wiring configurations (direct mounting, L-shaped mounting, U-shaped mounting) through standardized opening patterns. This single plate design replaces the need for multiple custom metal plates, reducing overall weight while maintaining secure mounting capability across different contactor arrangements.
Solution Approach 2:
The patent changes the material parameter from metal to plastic for the mounting plate, significantly reducing weight. Additionally, it uses parameter variation in the opening patterns (different shapes and positions) to accommodate various wiring configurations while maintaining the same base plate design, thus avoiding the need for multiple heavy metal plates.
2Ease of manufacture
If multiple custom mounting plates are developed for different structures, then each configuration can be optimized, but the complexity and variety of components increase
Solution Approach 1:
The patent designs a single universal mounting plate with multiple opening patterns that can serve different star-delta wiring configurations. The plate includes standardized attachment mechanisms and cable access openings that adapt to various contactor arrangements, eliminating the need to develop and maintain multiple custom plate designs for different structures.
Solution Approach 2:
The mounting plate incorporates modular opening patterns that can be selectively used based on the specific wiring configuration needed. The plate design allows for different cable access openings and attachment point arrangements, enabling a single plate to be segmented in function to serve multiple purposes without requiring physical segmentation into multiple plate types.
3Volume of moving object
If different contactor sizes are used in star-delta wiring, then space can be optimized, but additional mechanical locking mechanisms are required
Solution Approach 1:
The mounting plate incorporates a universal mechanical locking mechanism with standardized attachment points and cable access openings that work with contactors of different sizes. The plate's design includes adjustable opening patterns and standardized fastening points that accommodate both full-size and reduced-size contactors without requiring different locking mechanisms, thus optimizing space while maintaining simplicity.
Data Source
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AI summary
The invention relates to a star-delta wiring, in particular for a protective circuit that is arranged on a mounting plate (1). The invention is characterized in that the mounting plate (1) is made of plastic.