Claw Pole Stator Lead Wire Layout to Prevent Rotor Contact
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Solution Overview
Problem
Existing technologies for lead wire layout in claw pole-type rotary electrical devices result in a short distance between the lead wire and the rotor, increasing the risk of contact and potential damage.
Innovation Solution
The lead wire is drawn out through a second through-hole in the core, allowing for a more appropriate layout, and multiple stator units can be stacked with connected through-holes, with a pipe member fitted to guide the wire, and the core design includes yoke portions and claw magnetic poles arranged to prevent contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the lead wire is passed from a gap between the claw magnetic poles of the stator core to the outside in the axial direction, then the lead wire layout is simplified, but the distance between the lead wire and the rotor becomes short, increasing the risk of contact
Solution Approach 1:
The patent introduces a through-hole penetrating the stator core in the radial direction, changing the lead wire extraction path from axial to radial dimension. This dimensional shift allows the lead wire to exit the stator core at a location far from the rotor, eliminating contact risk while maintaining layout simplicity
Solution Approach 2:
The patent extracts the lead wire from the problematic axial path near the rotor and redirects it through a radially extending through-hole. This extraction removes the lead wire from the hazardous zone between the stator core and rotor, preventing contact while preserving manufacturing ease
Data Source
AI summary
A technique capable of implementing a more appropriate layout of a lead wire extending from a coil wire of a stator in a claw pole-type rotary electrical device is provided. A claw pole motor 1 according to an embodiment of the present disclosure includes a rotor 10 freely rotatable about a rotation axis AX; a stator 20 including a coil 212 wound around in an annular state and a stator core 210 of a claw pole-type provided so as to surround a periphery of the coil 212; and a lead wire LL extending from the coil 212, wherein the stator core 210 includes a through-hole 210D provided centered around the rotation axis and penetrating in an axial direction and a through-hole 210E, in which the lead wire LL is arranged, penetrating in the axial direction.