Fuse Assembly Post Force-Fit Insulation
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Solution Overview
Problem
Existing fuse assemblies in vehicles require complex manufacturing processes and costly materials to prevent short circuits, as the post must be molded within a block, increasing production costs and complexity.
Innovation Solution
A fuse assembly design where posts are force-fit into recesses within a block, eliminating the need for integral molding and using separate insulators, reducing manufacturing costs and simplifying the manufacturing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the post is molded within the block to provide integral construction, then structural strength and insulation are improved, but manufacturing complexity and cost increase
Solution Approach 1:
The fuse assembly is divided into separate components: the block, the post, and the insulator are manufactured independently and then assembled. This segmentation allows each component to be optimized for its specific function while simplifying manufacturing processes and reducing tooling costs compared to integral molding.
Solution Approach 2:
A separate insulator component is introduced as an intermediary element between the post and the block. This insulator provides the necessary electrical insulation and mechanical retention without requiring complex integral molding, thereby simplifying manufacturing while maintaining structural integrity and insulation performance.
2Reliability
If the post is molded within the block, then insulation against short circuits is improved, but manufacturing cost and complexity increase
Solution Approach 1:
A separate insulator component is introduced as an intermediary element between the post and the block. This insulator provides the necessary electrical insulation without requiring complex integral molding, thereby simplifying manufacturing while maintaining insulation performance.
Solution Approach 2:
The insulator is designed as a simple, inexpensive component that can be easily manufactured and replaced if necessary. This approach reduces overall manufacturing cost compared to complex integral molding while maintaining reliable insulation against short circuits.
3Ease of manufacture
If separate insulators are used instead of integral molding, then manufacturing complexity is reduced, but assembly steps increase
Solution Approach 1:
The insulator serves multiple functions simultaneously: it provides electrical insulation, mechanical retention for the post, and structural support. By combining these functions into a single component, the number of separate parts is reduced, and assembly is simplified despite using separate manufacturing processes.
Data Source
AI summary
A circuit protection assembly employs a post arrangement that is easier to manufacture and has a built-in insulating fuse configuration. The circuit protection assembly is disposed between a source of power and a circuit to be protected. The circuit protection assembly includes comprises a mounting block having a bore extending therethrough and a recess cavity on a first surface of the mounting block. A post having a first end is disposed within the recess cavity and a body portion extends through the bore. A fuse having a centrally disposed aperture is configured to receive the body portion of the post. The post has a second end configured to receive a terminal for connection to a circuit to be protected.