Block Fuse Removal Tab for Jump Start Box

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Solution Overview

Problem

Existing jump start boxes with inaccessible battery positions pose challenges in removing block fuses without causing damage to the fuse or the box, due to the complexity and inaccessibility of the electrical terminals.

Innovation Solution

Incorporation of block fuse removal tabs extending from the block fuse body, positioned to facilitate linear force application and prevent rotational forces during removal, allowing for ergonomic and efficient extraction without damaging the electrical connectors or the jump start box.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the block fuse is removed by pulling on its electrical connectors, then the block fuse can be extracted from the jump start box, but the electrical connectors may bend or break and the terminals may be damaged

Engineering Contradiction:

Improveease of block fuse removalVSAvoiddamage to electrical connectors and terminals

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

A removal tab is introduced as an intermediary element that mediates between the user's pulling force and the block fuse body. The tab extends from the block fuse body in a direction opposite to the electrical connectors, allowing users to pull the tab rather than the fragile electrical connectors or terminals, thus preventing damage while enabling removal

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The block fuse structure is segmented into distinct functional parts: the body containing fuses, the electrical connectors for electrical connection, and the separate removal tab for mechanical extraction. This segmentation allows each part to serve its specific function without interfering with others, particularly protecting the electrical connectors from mechanical stress during removal

Inventive Principle:

Principle #1Segmentation

2Ease of operation

If the block fuse is removed by pulling on the jump start terminal, then the block fuse can be extracted, but rotational forces are applied causing damage to the block fuse and jump start box

Engineering Contradiction:

Improveease of block fuse removalVSAvoidrotational forces damaging components

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The removal tab serves as a dedicated intermediary that provides a proper gripping point for linear extraction. By positioning the tab to extend in the opposite direction of the electrical connectors, it creates an optimal lever arm that guides force application in a straight line, preventing the rotational motion that occurs when pulling from misaligned points

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

Instead of pulling from the electrical connectors or terminal (the functional connection points), the design inverts the approach by providing a removal tab that extends in the opposite direction. This inversion creates a dedicated extraction interface that is mechanically optimized for removal without affecting the electrical connection integrity

Inventive Principle:

Principle #13The other way round (Inversion)

Data Source

PatentUS10707044B1Block fuse and jump start box including the block fuse

Publication Date: 2020.07.07 HONDA MOTOR CO LTD

AI summary

A block fuse including a body and a plurality of fuses coupled to the body is described herein. The block fuse also includes a plurality of electrical connectors extending from the body in a first direction and electrically coupled to the plurality of fuses, and at least one block fuse removal tab extending from the body in a second direction, opposite to the first direction.