Bus Bar Holding Structure with Protruding Groove Lock
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In electrical connection boxes for automobiles, the bus bar locking portion is difficult to form due to space constraints, leading to potential rattling of electrical connections, which can affect the reliability of the electrical connection.
Innovation Solution
A bus bar holding structure is implemented using a resin block main body with a groove portion, where a first bus bar with a protruding portion sandwiches a second bus bar, preventing rattling by ensuring contact between the protruding portion and the second bus bar, and optionally utilizing the protruding portion for heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a bus bar locking portion is formed in the bus bar assembling portion, then the bus bar can be prevented from falling off, but the locking portion is difficult to form due to space constraints
Solution Approach 1:
The patent merges the first bus bar and second bus bar into a single assembling portion, where the first bus bar serves a dual function: as an electrical conductor and as a locking mechanism. The protruding portion of the first bus bar interlocks with the groove in the resin block to secure the second bus bar, eliminating the need for a separate locking portion and resolving the space constraint issue.
2Device complexity
If the bus bar locking portion cannot be formed at an appropriate position, then space constraints are avoided, but rattling of the electrical connection portion occurs
Solution Approach 1:
The patent creates a dynamic interlocking mechanism where the protruding portion of the first bus bar fits into the groove portion of the resin block. This dynamic fit prevents rattling of the second bus bar while maintaining structural simplicity, as the interlocking feature is formed by the natural geometry of the bus bars themselves rather than additional components.
3Reliability
If a protruding portion is added to the first bus bar to prevent rattling, then electrical connection stability is improved, but the bus bar structure becomes more complex
Solution Approach 1:
The protruding portion of the first bus bar serves multiple functions simultaneously: it acts as a mechanical lock to prevent the second bus bar from falling off, provides structural support to reduce rattling, and maintains electrical continuity. This multi-functionality prevents rattling while avoiding the need for separate components, thus not increasing overall structural complexity.
Data Source
AI summary
A bus bar holding structure includes a resin block main body, a first bus bar having a protruding portion, and a second bus bar. The resin block main body includes a bus bar assembling portion having a groove portion. The first bus bar and the second bus bar are accommodated in the bus bar assembling portion such that first side portions of the first bus bar and the second bus bar are located on a bottom side of the groove portion and second side portions of the first bus bar and the second bus bar are located on an opening side of the groove portion. The second bus bar is sandwiched between the second bus bar and a bottom of the groove portion when the first bus bar and the second bus bar are accommodated in the bus bar assembling portion.