Electric Motor Offset Cable Duct Assembly
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Solution Overview
Problem
Existing electric motor designs face challenges in simplifying the electrical connection between electronic components and the stator, particularly in arranging openings for cable routing during assembly, which complicates the assembly process and may lead to damage or require additional sealing and strain relief measures.
Innovation Solution
The electric motor features offset openings for electrical connection lines between the stator and electronics housings, connected by a channel that forms a cable duct, allowing for secure routing without open exposure and enabling flexible placement for assembly, with the option of using ribs for structural support and electromagnetic shielding, and potential sealing to prevent moisture ingress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the first opening in the stator housing and the second opening in the electronics housing are arranged opposite each other to simplify cable routing, then the electrical connection becomes simpler, but it becomes difficult to meet assembly requirements and optimally place the openings for both stator assembly and electronics housing connection
Solution Approach 1:
The patent transitions from a two-dimensional opposite arrangement of openings to a three-dimensional offset arrangement, where the first opening in the stator housing and the second opening in the electronics housing are spaced apart axially. This dimensional change allows both openings to be optimally positioned for their respective functions without requiring direct alignment, resolving the contradiction between simplified connection and placement adaptability.
2Ease of operation
If the first opening is arranged to facilitate cable routing during stator assembly, then assembly becomes easier, but the second opening in the electronics housing may not be properly positioned to connect to electronic components
Solution Approach 1:
The patent segments the opening arrangement into two independently positioned openings: the first opening in the stator housing optimized for cable routing during stator assembly, and the second opening in the electronics housing optimized for connection to electronic components. The connection channel links these segmented openings, allowing each to be positioned independently for its specific function without increasing overall device complexity.
3Ease of manufacture
If electrical connection lines are routed openly between the electronics housing and stator housing, then routing becomes simpler, but the cables become exposed to damage and require additional sealing and strain relief measures
Solution Approach 1:
The patent introduces a connection channel as an intermediary structure between the first opening in the stator housing and the second opening in the electronics housing. This channel provides a protected pathway for electrical connection lines, shielding them from external damage while maintaining routing simplicity. The connection channel eliminates the need for additional sealing and strain relief measures that would be required for open cable routing.
Data Source
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AI summary
The motor has a stator housing (2) comprising an aperture in a circumferential wall. An electronics housing comprises another aperture at a wall opposite to the stator housing. Electrically conductive lines (12) are extended from an interior of the electronics housing to an interior of the stator housing through the apertures. The apertures are spaced apart from each other in an axial direction (X). A connecting channel (18) is formed between the housings to connect the apertures with each other. The lines are extended from the former aperture to the latter aperture through the channel. The electrically conductive lines are designed as cables. The connecting channel forms a cable duct.