Rotating Electrical Machine Connection Component Vibration Wear
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Solution Overview
Problem
The existing rotating electrical machine connection components experience vibration-induced wear, leading to enlarged through-holes and inadequate insulation distances due to movement of linear conductors relative to a resin fixing member, causing noise and potential electrical issues.
Innovation Solution
A rotating electrical machine connection component featuring a molded resin portion that covers and connects linear conductors, preventing their movement relative to the resin member, with a configuration of straight and bent portions to secure the conductors and maintain insulation distances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the fixing member is formed of a resin and through-holes are formed to insert power lines, then the device complexity is reduced and ease of manufacture is improved, but the inner diameter of the through-holes is enlarged due to wear from frictional sliding caused by vibration, leading to inadequate fixing and noise generation
Solution Approach 1:
The power lines are inserted into the through-holes of the fixing member before the resin is molded. This preliminary insertion ensures that the power lines are positioned correctly and will be securely fixed once the resin hardens, preventing subsequent movement and wear that would otherwise enlarge the through-holes and cause noise.
Solution Approach 2:
The invention changes the state of the fixing member from a pre-formed resin piece with through-holes to a resin that is molded in place around inserted power lines. This parameter change in the manufacturing process ensures the power lines are fixed before the resin sets, eliminating relative movement and frictional wear that would enlarge the through-holes.
2Ease of operation
If the inner diameter of the through-holes is enlarged due to wear of the fixing member, then the power lines can move relative to the fixing member, but this movement reduces the insulation distance between power lines and between power lines and windings, creating harmful electrical issues
Solution Approach 1:
The power lines are inserted into the through-holes before the resin is molded, establishing their correct positions and ensuring adequate insulation distances are maintained. This preliminary positioning prevents subsequent movement that would reduce insulation distances and create electrical hazards.
Solution Approach 2:
The resin provides localized fixing at the insertion portions of the power lines within the through-holes. This local quality of the resin - being molded in place around the inserted power lines - ensures that the power lines are securely fixed at critical points, maintaining insulation distances without requiring the entire structure to be overly rigid.
3Device complexity
If the power lines are fixed by inserting them into through-holes of a bar-shaped fixing member, then the device structure is simplified, but vibration causes frictional sliding that enlarges the through-holes and generates noise
Solution Approach 1:
The power lines are inserted into the through-holes before the resin is molded, establishing their correct positions and ensuring adequate insulation distances are maintained. This preliminary positioning prevents subsequent movement that would reduce insulation distances and create electrical hazards.
Solution Approach 2:
The resin provides localized fixing at the insertion portions of the power lines within the through-holes. This local quality of the resin - being molded in place around the inserted power lines - ensures that the power lines are securely fixed at critical points, maintaining insulation distances without requiring the entire structure to be overly rigid.
Data Source
AI summary
A rotating electrical machine connection component includes a plurality of linear conductors, and a first molded resin portion that covers portions of the plurality of linear conductors and connects the plurality of linear conductors to each other. Each of the plurality of linear conductors includes a first straight portion extending out of the first molded resin portion in a direction parallel to a rotational axis of the rotor and connected to the terminal block, a second straight portion extending out of the first molded resin portion in a different direction from the first straight portion and a bent portion bent between the first and second straight portions. Of each of the plurality of linear conductors, a part of the first straight portion, the bend portion and a part of the second straight portion are covered by the first molded resin portion.