Rotary Machine Feeding Body Protrusion Insulation
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Solution Overview
Problem
Rotary electric machines with existing feeding bodies are prone to shorts due to vibration, which can cause collisions with the stator, leading to electrical failures.
Innovation Solution
A feeding body design for rotary electric machines featuring a power supply main body with a terminal portion and a protection portion molded with protrusions that extend towards the stator, providing insulation and preventing contact during vibrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the feeding body is designed without additional protection structures, then the device complexity is reduced, but the reliability deteriorates due to shorts caused by vibration-induced collisions with the stator
Solution Approach 1:
The protrusion is formed on the protection portion before the feeding body undergoes vibration or collision, establishing a predetermined insulation distance that prevents contact between the feeding body and stator in advance. This preliminary structural arrangement ensures that even when vibration occurs, the feeding body cannot reach the stator surface, thereby preventing shorts without requiring complex active control systems.
Solution Approach 2:
The protection portion with protrusion acts as an intermediary element between the feeding body and the stator. It provides an insulating barrier that mediates the potential harmful contact, allowing the feeding body to maintain its electrical function while being physically isolated from the stator surface during vibration or displacement events.
2Volume of stationary object
If the feeding body is positioned closer to the stator to reduce space, then the volume is reduced, but the reliability worsens due to increased risk of collision during vibration
Solution Approach 1:
Instead of increasing the axial distance between the feeding body and stator (one-dimensional solution that would increase volume), the invention introduces a radial dimension solution by forming a protrusion on the protection portion. This radial protrusion establishes insulation distance in the radial direction while maintaining compact axial dimensions, effectively using another spatial dimension to solve the contradiction between compactness and reliability.
Data Source
AI summary
Provided is a feeding body, for a rotary electric machine, capable of preventing short between a feeding body and a stator or the like caused by vibration or the like. A feeding body, for a rotary electric machine such as a motor and generator, includes: a power supply main body including a conductor such as copper; a terminal portion formed at one end of the power supply main body; and a protection portion made from a resin material molded to a connection part connected with the terminal portion on the power supply main body, wherein the protection portion includes a protrusion protruding toward a stator of the rotary electric machine.