Electrical Connection Box Bus Bar Holding Member
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Solution Overview
Problem
Conventional electrical connection boxes face issues with bus bar deformation when electronic components are inserted, leading to potential connection failures due to external forces.
Innovation Solution
The electrical connection box design includes a casing with a circuit board, electronic component accommodating parts, first and second bus bars, and a holding member that prevents deformation by holding the bus bars and receiving inserting forces, ensuring stable connections between electronic components and the circuit board.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If bus bars are connected to electronic components without a holding member, then the structure is simple, but the bus bars deform considerably when electronic components are inserted
Solution Approach 1:
The holding member acts as an intermediary between the bus bars and the electronic components. It provides a stable mounting structure that prevents bus bar deformation during component insertion while maintaining overall structural simplicity. The holding member absorbs the mechanical stress that would otherwise be transmitted to the bus bars.
2Reliability
If bus bars are held rigidly to prevent deformation, then connection stability is improved, but the inserting force cannot be absorbed effectively
Solution Approach 1:
The holding member segments the force transmission path by providing separate support points for the bus bars. This segmentation allows the holding member to absorb inserting forces through its structural design while maintaining stable connections, preventing force transmission that would cause bus bar deformation.
3Reliability
If the holding member is added to prevent bus bar deformation, then connection reliability is improved, but the device complexity increases
Solution Approach 1:
The holding member combines multiple functions into a single component: it provides mechanical support for bus bars, absorbs inserting forces, and maintains connection stability. This merging approach improves connection reliability while minimizing the increase in device complexity by using one multi-functional element rather than multiple separate components.
Data Source
AI summary
An electrical connection box includes FL accommodating parts that are disposed on a main face wall of a casing that faces a front side of a circuit board and to which fusible links are fit; first bus bars that are erected in a vertical direction from the circuit board and connect the fusible links fit to the FL accommodating parts and the circuit board; second bus bars each of which includes a first vertical part erected in the vertical direction from the circuit board, a horizontal part that extends in a parallel direction with respect to the circuit board, and a second vertical part that extends in the vertical direction and that connect the fusible links and the circuit board; and a block body of a bus bar block that is disposed on the circuit board and holds the first bus bars and the second bus bars.