Reversible Fuse Support Block for Compact Disconnect Switches
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Solution Overview
Problem
Industrial automation systems face challenges in reducing the footprint of disconnect switch assemblies, which are essential for maintaining and repairing motor control centers, due to space constraints in motor control centers.
Innovation Solution
A reversible fuse support block design that allows for installation in two configurations, with a molding and terminals having specific aperture patterns, enabling the same fuse interface positions in both configurations, thus allowing electrical lines to extend underneath the fuses in the second configuration, reducing the overall footprint.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a conventional fuse support block design is used, then the electrical interface positions are fixed, but the footprint of the disconnect switch assembly increases
Solution Approach 1:
The fuse support block is divided into separable components: a molding with mounting apertures, terminals with aperture patterns, and fuse interfaces. These segments can be assembled in different configurations by rotating the molding 180 degrees, allowing the same components to achieve compact or expanded footprints while maintaining proper electrical connections.
Solution Approach 2:
The fuse support block transitions from a static, fixed-configuration design to a dynamic, reconfigurable design. The molding can be rotated between two stable positions (0 degrees and 180 degrees), enabling the assembly to adapt its footprint based on installation requirements while maintaining structural integrity and electrical functionality.
2Area of stationary object
If the molding is rotated 180 degrees to reduce footprint, then the electrical lines can extend underneath the fuses, but the fuse interface positions must remain consistent
Solution Approach 1:
The terminal aperture pattern is designed with asymmetric positioning relative to the molding, creating two distinct but functionally equivalent configurations. When the molding is rotated 180 degrees, the asymmetric aperture pattern ensures that fuse interfaces remain in substantially the same operational positions while allowing electrical lines to extend underneath the fuses in the compact configuration.
Solution Approach 2:
The terminal and molding are pre-designed with specific aperture patterns that anticipate both configuration needs. The aperture locations are predetermined during manufacturing to ensure that regardless of which configuration is selected (0 or 180 degrees), the fuse interfaces will be in the correct positions for proper electrical connection and compact wiring.
Data Source
AI summary
A reversible fuse support block includes a molding, a terminal, and a fuser interface. The molding may be installed within a housing in a first position and a second position, wherein the second position is rotated 180 degrees relative to the first position. The terminal couples to the molding and includes a plurality of apertures disposed in a pattern. The fuse interface receives a first end of a fuse. The fuse interface couples to the terminal in a first arrangement and a second arrangement such that when the fuse interface is installed in the first arrangement and the molding is installed in the first position, the fuse interface is disposed in substantially the same position relative to a corresponding fuse interface on a fuse support block as when the fuse interface is installed in the second arrangement and the molding is installed in the second position.