Laminated Busbar Terminal Block for Position Shift and Sealing
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Solution Overview
Problem
The integration of inverters and motors often results in position shifts of busbars due to assembly tolerances and thermal expansion/contraction, compromising sealability.
Innovation Solution
A terminal block with a busbar formed into an elongated shape, featuring a laminated busbar portion composed of multiple plate members and a single-layer busbar portion, which enhances position shift absorption while maintaining sealability through a laminated structure and sealant application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single-layer busbar is used, then sealability is maintained, but position shift absorbing performance is insufficient
Solution Approach 1:
The busbar is divided into multiple plate members (first plate member and second plate member) that are laminated together. This segmentation allows each plate to independently deform and absorb position shifts while maintaining the overall sealability of the connection structure.
Solution Approach 2:
The busbar uses a composite structure combining multiple plate members with different functional characteristics. The laminated plates provide flexibility for position shift absorption, while the overall composite structure maintains sealability through coordinated deformation and contact with sealing surfaces.
2Adaptability or versatility
If a laminated busbar structure is used to absorb position shifts, then position shift absorbing performance is enhanced, but sealability may be compromised
Solution Approach 1:
Different regions of the laminated busbar structure have different functional properties. The plate members are designed with specific local characteristics that enable them to deform in controlled ways to absorb position shifts while maintaining contact with sealing surfaces in critical areas to preserve sealability.
Solution Approach 2:
The laminated busbar structure is designed to dynamically adapt to position shifts through controlled deformation of the plate members. The flexible lamination allows the busbar to move and adjust its position while maintaining sealing contact, transforming the static sealing structure into a dynamic one that can accommodate tolerances and thermal expansion.
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
The solution effectively absorbs position shifts and maintains sealability by allowing the laminated busbar portion to bend easily and using a single-layer busbar portion to block liquid intrusion, ensuring reliable electrical connections.
Implementation Method 1
the motor-side busbars and the inverter-side busbars are possibly shifted in position due to assembly tolerances, thermal expansion/contraction and the like
Data Source
AI summary
It is aimed to further enhance position shift absorbing performance of a busbar itself while maintaining sealability. A terminal block to be fixed to a device includes a busbar formed into an elongated shape and a block body to be fixed to the device while holding the busbar. A part in an extension direction of the busbar is a laminated busbar portion formed by laminating a plurality of plate members, and at least a part of a remainder is a single-layer busbar portion.