Terminal Block Partition Wall Resin Sealing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing terminal blocks in power supply units, especially those in harsh environments like engine rooms of hybrid and electric cars, face airtightness issues due to material differences between conductive members and resin, leading to potential leakage and increased costs from excessive resin usage for sealing.
Innovation Solution
A terminal block design featuring a connection member with a flange and a resinous portion that divides the sealing area into two sections, allowing individual sealing of the terminal member and through-hole, reducing resin usage while maintaining airtightness through a partition wall and varying resin charging amounts in each area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a liquid sealing resin is used to seal the boundary face, then leakage is prevented, but the product cost increases due to expensive sealing resin and increased application amount
Solution Approach 1:
The sealing space is segmented into a first area and a second area using a partition wall. This segmentation allows the resinous portion to be filled in a controlled manner, reducing the total application amount required. The partition wall creates distinct zones that limit resin flow and prevent excessive material usage while ensuring complete sealing of all boundary faces.
Solution Approach 2:
The resinous portion is selectively applied to specific boundary faces and areas that require sealing, rather than uniformly coating all surfaces. The partition wall enables localized sealing in the first area and second area, applying resin only where necessary to prevent leakage, thereby reducing overall material consumption and cost.
2Reliability
If resin is used to seal both the terminal member and through-hole, then airtightness is improved, but excessive resin usage increases product cost
Solution Approach 1:
The partition wall divides the sealing space into a first area for sealing the terminal member and a second area for sealing the through-hole. This segmentation enables independent resin filling operations, allowing precise control over resin application amounts for each area, thereby reducing total resin usage while maintaining airtightness for both sealing locations.
Solution Approach 2:
Instead of filling the entire sealing space with resin, the partition wall enables partial filling of the first area and second area separately. This partial action approach applies resin only to the extent necessary for effective sealing of each component, avoiding excessive material usage that would increase product cost.
Data Source
AI summary
To improve airtightness while reducing a usage amount of a resin for a sealing operation. A terminal block 20 of an electronic device 100 includes a resinous portion 21, a terminal member 23, and a connection member 25. Then, since a first area A1 and a second area A2 are divided by a partition wall 273 in the terminal block 20, it is possible to individually charge a charging resin 29A for blocking a through-hole A22 and a charging resin 29B for blocking a boundary portion between the terminal member 23 and the resinous portion 21. Thus, since the charging amounts of the charging resins 29A and 29B may be respectively adjusted, it is possible to appropriately charge the charging resin for improving the airtightness and to reduce the usage amount of the charging resin for a sealing operation.