Fuse Unit Terminal Connection Stability via Stud Bolt Mediator
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Solution Overview
Problem
Existing fuse units for automobile battery terminals face challenges in maintaining terminal connection stability due to reaction forces from conductive paths and external shocks or vibrations, leading to low workability and potential detachment of terminals from the connection section.
Innovation Solution
A fuse unit design featuring a bus bar with a power source-side and output-side connection section, a housing that covers the fusible body, and a terminal accommodation section with protrusion sections, movement restricting grooves, and guiding walls to securely hold the terminal in place, preventing detachment and facilitating fastening even under reaction forces or external disturbances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the terminal is connected to the output-side connection section without a stud bolt, then the device complexity is reduced, but the terminal may detach due to reaction forces from bent conductive paths
Solution Approach 1:
The patent introduces a stud bolt as an intermediary component between the terminal and the output-side connection section. This stud bolt serves as a mediator that securely fastens the terminal to the connection section, preventing detachment caused by reaction forces from bent conductive paths while maintaining a relatively simple overall structure.
2Ease of manufacture
If the terminal is connected without a stud bolt, then the ease of manufacture is improved, but the workability of fastening the terminal is reduced
Solution Approach 1:
The stud bolt acts as a standardized intermediary component that simplifies the fastening operation. Workers can easily attach the terminal to the output-side connection section by fastening the stud bolt, which provides a reliable and straightforward fastening process compared to alternative connection methods.
3Adaptability or versatility
If the conductive path is bent to reach the connection section, then the adaptability to complex battery structures is improved, but reaction forces cause the terminal to move and detach
Solution Approach 1:
The stud bolt provides preliminary anti-action by pre-establishing a secure fastening mechanism before the conductive path's reaction forces can cause the terminal to detach. The stud bolt's fastening action counteracts the detaching force generated when the conductive path returns to its original shape after being bent.
4Adaptability or versatility
If shocks or vibrations are exerted before bolting, then the adaptability to external environmental factors is tested, but the terminal comes off from the connection section
Solution Approach 1:
The stud bolt establishes preliminary anti-action by providing a secure fastening connection before external shocks or vibrations can cause the terminal to detach. The fastened stud bolt prevents the terminal from moving or coming off from the connection section even when subjected to external environmental disturbances.
Data Source
AI summary
A fuse unit includes a bus bar and a housing. The bus bar includes a power source-side connection section, an output-side connection section, and a fusible body. A terminal configured to be connected to the output-side connection section includes a bent section and protrusion sections. The housing includes a terminal accommodation section for accommodating the output-side connection. The accommodation space is enclosed with side walls standing upright on both sides of the output-side connection section in an insertion direction of the terminal and on a deep side thereof in the insertion direction of the terminal. The terminal accommodation section includes terminal insertion start-side movement restricting walls and a height-direction and terminal insertion start-side movement restricting wall.