Fuse Holder Structure for Vibration-Stable Fuse Support

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Solution Overview

Problem

Existing fuse devices suffer from vibration-induced stress and damage due to lack of direct support, leading to potential breakage and cracking at terminal points.

Innovation Solution

A fuse holder design that includes a planar portion, extension portions, and annular portions to securely hold and support the fuse body, providing mechanical stability without interrupting current flow.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If the fuse body is suspended between terminals without direct support, then the fuse device structure is simple, but the fuse body experiences violent shaking during vibration leading to high stress and potential breakage at terminal points

Engineering Contradiction:
Improvestructure simplicityVSAvoidterminal durability
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The fuse holder acts as an intermediary component between the fuse body and terminals. It provides direct support to the fuse body through its support surface while being secured to the terminals, thereby mediating the mechanical stress and preventing violent shaking of the fuse body during vibration without complicating the overall structure

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The fuse holder is divided into distinct functional segments: a support surface for directly supporting the fuse body, extension portions for securing to terminals, and an annular portion for additional stabilization. This segmentation allows each part to perform its specific function efficiently while maintaining overall structural simplicity

Inventive Principle:
Principle #1Segmentation

2Ease of manufacture

If the fuse body is directly suspended between terminals, then the installation process is simple, but the fuse body lacks stabilization during operation leading to vibration-induced damage

Engineering Contradiction:
Improveinstallation simplicityVSAvoidvibration damage
Core Design Contradiction:
Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The fuse holder provides beforehand cushioning by positioning the fuse body on its support surface before vibration occurs. The extension portions secure the holder to the terminals in advance, creating a stabilized configuration that cushions the fuse body against upcoming vibration-induced shocks and prevents damage

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

3Strength

If securing mechanisms are used to fix terminals to busbars, then the terminal connection is secure, but no support is provided to the fuse body itself leaving it vulnerable to vibration

Engineering Contradiction:
Improveterminal connection strengthVSAvoidfuse body stability
Core Design Contradiction:
StrengthVSStability of the object's composition

Solution Approach 1:

The fuse holder serves multiple functions: it provides direct support to the fuse body through its support surface, secures to the terminals via extension portions with securing mechanisms, and stabilizes the fuse body during vibration. This multi-functionality allows a single component to address both terminal connection strength and fuse body stability

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS20250293485A1Fuse holder
Publication Date: 2025.09.18 SUZHOU LITTELFUSE OVS LTD
  • US20250293485A1 patent drawing
  • US20250293485A1 patent drawing
  • US20250293485A1 patent drawing

AI summary

A fuse holder is provided to protect a fuse device by preventing a fuse body of the fuse device from shaking when the fuse device is vibrating. The fuse holder can include a planar portion with an aperture for receiving a securing mechanism therein a first extension portion disposed adjacent to and extending from a first end of the planar portion at an angle relative to the planar portion, a first end of the first extension portion spanning a length of the first end of the planar portion, and a first annular portion disposed adjacent to and extending from a second end of the first extension portion, the first annular portion having a partially circumferential shape for receiving a cylindrically-shaped fuse body therein, and the second end of the first extension portion being adjacent to the first end of the first extension portion.