Fuse Clip Dual-Spring Support for Vibration Resistance
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Solution Overview
Problem
Existing fuse clips struggle to securely hold heavy cylindrical fuses in vibration-prone environments without requiring excessive force for insertion and removal, as they rely on rigid circular-arc surfaces that increase the operating force needed.
Innovation Solution
A fuse clip design featuring a pair of first springs and a pair of second springs that elastically support the fuse from the radially outer side, with the first springs supporting at or above the center of the fuse and the second springs supporting at a higher position, reducing the force required for insertion and removal while preventing slippage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If circular-arc surfaces are used for surface contact support, then firm support against vibration is achieved, but the operating force required for insertion and removal increases significantly
Solution Approach 1:
The support function is divided into two distinct parts: first springs provide primary support at the center position, while second springs provide additional support at higher positions. This segmentation allows each spring type to be optimized for its specific function, with the first springs designed for easier deflection during operation and the second springs providing enhanced vibration resistance without requiring excessive operating force.
Solution Approach 2:
The support structure transitions from a single-plane circular-arc surface contact to a multi-level point contact system. The first springs contact at the center (horizontal line segment position) and the second springs contact at higher positions, creating a vertical dimensionality that distributes the support function and reduces the force required for operation while maintaining vibration resistance.
2Reliability
If heavy-weight cartridge fuses are used in vibration-prone environments, then adequate current protection is achieved, but significant vibration causes the fuse to slip out
Solution Approach 1:
The second springs are positioned at higher locations to provide preliminary support before vibration can cause the fuse to slip out. By having support points at multiple vertical levels, the system proactively prevents upward movement and slippage during vibration events, rather than reacting after the fuse has already moved.
Solution Approach 2:
The support system changes the parameter of support distribution from a single circular-arc surface to multiple discrete contact points at different vertical positions. This parameter change allows the first springs to provide primary retention while the second springs at higher positions provide additional constraint against vibration-induced slippage.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design effectively reduces the burden of inserting and removing fuses by distributing the load and providing stable support, minimizing the likelihood of slippage in vibration-prone conditions without increasing the operational force.
Implementation Method 1
a pair of first springs configured to support a fuse having a cylindrical body part from a radially outer side... The first springs are configured to elastically support the cylindrical body part
Implementation Method 2
a pair of second springs disposed side by side with the first springs in an axial direction of the fuse and configured to elastically support the fuse from the radially outer side
Data Source
AI summary
A fuse clip comprising a pair of first springs configured to support a fuse having a cylindrical body part from a radially outer side and a pair of second springs disposed side by side with the first springs in an axial direction of the fuse and configured to elastically support the fuse from the radially outer side. The first springs are configured to elastically support the cylindrical body part at a point of intersection between a horizontal line segment passing through a center of the cylindrical body part and an outer circumferential surface of the cylindrical body part or at a position higher than the point of intersection. The second springs are configured to elastically support the cylindrical body part at a higher position with respect to the point of intersection than the first springs elastically support the cylindrical body part.