Stator Terminal Device with Annular Ribs for Busbar Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing terminal devices for stator windings face challenges in securely and stably accommodating polygonal-shaped busbars, leading to potential instability and manufacturing complexities.
Innovation Solution
The terminal device features annularly-shaped accommodation spaces within an insulation body with concentric ribs, allowing for a stable fixation of polygonal busbars through a combination of bends and straights, enhancing the connection and support structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If polygonal-shaped busbars are used in terminal devices, then manufacturing ease is improved, but stability and secure arrangement of busbars deteriorates
Solution Approach 1:
The patent applies the nesting principle by placing the polygonal busbars inside annular accommodation spaces within the insulation body. The annular shape of the accommodation spaces provides a stable, curved support structure that securely holds the polygonal busbars in place, preventing displacement while maintaining the manufacturing advantages of polygonal shapes.
Solution Approach 2:
The patent transitions from considering only the two-dimensional polygonal shape of busbars to incorporating a three-dimensional annular accommodation space. This dimensional change adds radial and axial constraints that stabilize the busbars, transforming the problem from a 2D shape issue to a 3D spatial arrangement that provides secure fixation.
2Stability of the object's composition
If conventional accommodation spaces are used, then stability is maintained, but manufacturing complexity increases
Solution Approach 1:
The patent segments the insulation body into multiple annular accommodation spaces, each designed to hold specific busbars. This segmentation allows for standardized, modular manufacturing of the insulation body while maintaining stable accommodation for multiple busbars, reducing overall device complexity through repetitive, standardized components.
Solution Approach 2:
The patent changes the geometric parameters of the accommodation spaces from conventional shapes to annular shapes with specific radial and axial dimensions. This parameter optimization enables stable busbar accommodation while simplifying the manufacturing process through consistent geometric features that can be efficiently produced.
Data Source
AI summary
Terminal device for a stator of an electric machine includes a central opening, and an insulation body surrounding the central opening about a longitudinal axis extending through the central opening. The insulation body includes a base and a plurality of concentrically arranged ribs protruding from the base into an axial direction and extending along a circumferential direction. A plurality of accommodation spaces are each formed between a respective pair of radially adjacent ribs and having the shape of a sector of an annulus.