Vehicle Fuse Unit with Upper Surface Connections
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Solution Overview
Problem
Conventional fuse units for vehicles with two batteries require complex and multi-step connections to both batteries and an alternator, complicating the process and making it difficult to execute in a small working space.
Innovation Solution
A fuse unit design where all connections to the first battery, second battery, and alternator are facilitated from the upper surface, using an insulating unit body with a conductive circuit and fusible portions, allowing for simplified connection and protection against overcurrents, with fusible portions strategically located to enable efficient assembly in a compact space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional fuse units are designed with L-shaped unit bodies requiring connections at both upper surface and side surface, then the fuse unit can connect to batteries and alternator, but the connection process becomes complex and requires multiple steps
Solution Approach 1:
The patent merges all connection functions (first battery connection, second battery connection, and alternator connection) into a single upper surface location. The unit body is designed with a substantially flat upper surface where all three connection points are positioned, eliminating the need for side surface connections and simplifying the assembly process to a single location operation.
Solution Approach 2:
The patent transitions from a three-dimensional distribution of connection points (across upper surface and side surface) to a two-dimensional arrangement (all on the upper surface). This dimensional reorganization allows all connections to be accessed from one location, reducing assembly complexity while maintaining functional connectivity.
2Ease of operation
If conventional fuse units require connections at multiple locations (upper surface and side surface), then all components can be connected, but the assembly becomes difficult to execute in small working spaces
Solution Approach 1:
The patent combines all connection operations into a single accessible location on the upper surface. By positioning the first battery connecting portion, second battery connecting portion, and alternator connecting portion all on the upper surface, the design enables assembly in confined spaces where side surface access would be limited or impossible.
Solution Approach 2:
The upper surface of the unit body serves multiple functions simultaneously: it provides the mounting surface for the fuse unit, the access plane for all electrical connections, and the structural base for positioning all connecting portions. This multi-functionality eliminates the need for separate side surface connection areas.
3Ease of manufacture
If the unit body is designed with L-shape bent at right angle, then connections to batteries and alternator are possible, but the connection process becomes multi-step and complicated
Solution Approach 1:
The patent segments the connection functions into distinct connecting portions (first battery connecting portion, second battery connecting portion, alternator connecting portion) while consolidating their spatial arrangement on the upper surface. This segmentation of functions with unified spatial organization simplifies the connection process despite the functional complexity.
Solution Approach 2:
The patent reorganizes the unit body from an L-shape requiring three-dimensional navigation to a substantially flat upper surface configuration. This dimensional simplification allows all connections to be made from a single plane, reducing the complexity of the connection process while maintaining the necessary structural integrity.
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
Simplifies the connection process by allowing all necessary connections to be made on the upper surface, reducing the number of steps and facilitating efficient assembly in confined spaces while providing effective overcurrent protection for the battery and alternator systems.
Implementation Method 1
a fusible body (7), connected to the circuit body, for blocking a current flow path when an overcurrent flows therethrough
Data Source
AI summary
A first battery connecting end, an alternator connecting end and a second battery connecting end of a circuit body are located at an upper surface portion of a unit body.