Fuse Holder With Toggle Switch And Blocking Device
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Solution Overview
Problem
Existing fuse holders in electrical circuits face challenges in easy and safe replacement of fuses, especially when located in inaccessible areas, and large fuses require more space, complicating access and increasing the risk of electrical contact.
Innovation Solution
A fuse holder design with a toggle switch and a blocking device that automatically isolates electrical connections when the fuse carrier is removed, ensuring safe disengagement and allowing for compact sizing by enabling the fuse carrier to be separable along its longitudinal axis, along with electrical contacts for secure engagement and disengagement of the fuse ends.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If fuses are placed in electrical or fuse boxes located in inaccessible areas, then space utilization is improved, but ease of access for fuse replacement deteriorates
Solution Approach 1:
The fuse holder is divided into a stationary body and a removable carrier. The carrier can be extracted from the holder to provide easy access for fuse replacement, while the stationary body remains in the electrical box. This segmentation allows the system to occupy minimal space in the electrical box while enabling easy maintenance through carrier removal.
2Adaptability or versatility
If fuse boxes are designed to accommodate multiple large fuses, then functionality is improved, but device size increases making access more difficult
Solution Approach 1:
The fuse carrier is designed to nest within the fuse holder body when not in use. Multiple carriers can be stored in a compact arrangement within the electrical box, with each carrier holding a fuse. This nesting approach allows multiple fuses to be accommodated in a space-efficient manner while maintaining easy access through carrier removal.
3Ease of operation
If fuse carriers are made separable along the longitudinal axis, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The fuse carrier is extracted as a separate removable component from the fuse holder body. The carrier includes a recess for receiving the fuse and can be easily removed along the longitudinal axis of the holder. This extraction design simplifies the replacement operation while maintaining a relatively simple overall structure through straightforward mechanical interfaces.
4Reliability
If a blocking device is added to prevent switch engagement without fuse carrier, then safety is improved, but device complexity increases
Solution Approach 1:
The blocking device is positioned to prevent engagement of the toggle switch with the line side connector unless the fuse carrier is properly in place. This preliminary blocking action ensures that the electrical circuit cannot be energized without the protective fuse carrier, preventing unsafe operation. The blocking mechanism integrates with existing components without requiring a completely separate safety system.
Data Source
AI summary
A fuse holder for holding a fuse is provided that includes a body, a line side connector supported by the body, and a load side connector supported by the body. The fuse holder also includes a toggle switch supported by the body and capable of toggled engagement in a first position that provides electrical connection. The switch is also capable of toggled engagement in a second position that provides electrical isolation between the line side connector and the load side connector. The fuse holder also includes a fuse carrier. The fuse carrier is supported by the body and adapted for holding the fuse and the fuse carrier is adapted to be removed from the fuse holder. The fuse holder includes a blocking device blocking the toggled engagement of the switch from the second position to the first position when the fuse carrier is not within the fuse holder.