Motor Insulator Lead Wire Escape Portion
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Solution Overview
Problem
In electric motors, the intersection of winding start and end portions of lead wires with the insulator wall can cause deformation, making it difficult to arrange wiring members on the insulator.
Innovation Solution
The design includes a lead wire escape portion on the insulator's outer wall, positioned radially outward from the coil, which overlaps with the intersection portion of the winding start and end, preventing deformation of the insulator wall and allowing easier arrangement of wiring members.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the winding start portion and winding end portion of the lead wire are arranged to intersect with each other in the radial direction, then the lead wire can be connected to the coil, but the intersection portion contacts the insulator wall portion causing deformation and making it difficult to arrange the wiring member
Solution Approach 1:
The patent introduces a lead wire escape portion as an intermediary structure between the intersection portion of the lead wire and the insulator wall portion. This escape portion provides a dedicated path or space that allows the lead wire to pass through or be positioned without directly contacting the insulator wall, thereby preventing deformation while maintaining proper positioning
Solution Approach 2:
The patent resolves the radial direction conflict by utilizing another dimension - the lead wire escape portion creates a three-dimensional solution where the lead wire can exit or be positioned in a direction other than purely radial, or at an angle, thereby avoiding contact with the insulator wall while still achieving the necessary electrical connections
Data Source
Figure 1
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AI summary
An armature includes insulator components 51. A wiring member is arranged in a wiring fixing groove 514a positioned outside an outer wall portion 513 of the insulator component 51. When a lead wire is wound around the insulator components 51, a winding start portion and a winding end portion of the lead wire are arranged to intersect with each other in a radial direction to define an intersection portion. The winding start portion is pressed by the winding end portion toward the outer wall portion 513. A lead wire escape portion 5131 spaced from a radially outer end portion of a coil is defined in the outer wall portion 513. This contributes to preventing the outer wall portion 513 from being deformed by being pressed by the lead wire at the intersection portion, thereby preventing difficulty in arranging the wiring member on the insulator component 51.