Vehicle Actuator Stator Layout for Compact Magnetic Circuits
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Solution Overview
Problem
Existing actuators for vehicle assemblies face challenges in terms of installation space efficiency, cost-effectiveness, and simple production, particularly in designs like claw pole stepping motors where stator parts require separate assembly and complex manufacturing.
Innovation Solution
The stator is configured with an inner stator part and two outer stator parts, forming two magnetic circuits integrally, allowing for a simple, single-piece design that reduces manufacturing time and costs, and enables efficient use of installation space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the stator is formed by multiple separate stator parts with stator coils wound around them, then the magnetic circuit can be completed, but the manufacturing complexity and production time increase
Solution Approach 1:
The patent merges multiple separate stator parts into a single integrated stator component. The stator is formed as one piece with multiple stator poles (first stator poles and second stator poles) that are integrally connected, eliminating the need for separate assembly of multiple stator parts while maintaining the complete magnetic circuit path.
Solution Approach 2:
While the stator is integrated, the patent segments the stator into distinct functional regions with different pole arrangements - first stator poles arranged in a first pattern and second stator poles arranged in a second pattern. This segmentation allows different magnetic circuit paths to be defined within the single integrated structure, enabling versatile actuator operation.
2Power
If separate stator parts are used with stator coils wound around each part, then the magnetic flux can be supplied to each stator part, but the production costs and manufacturing time increase
Solution Approach 1:
The patent combines multiple stator parts into one integrated stator that can receive magnetic flux supply for different pole groups simultaneously. The single stator structure includes first stator poles and second stator poles that can be independently excited through appropriately positioned stator coils, maintaining power functionality while improving manufacturing efficiency through reduced assembly steps.
3Adaptability or versatility
If stator coils are wound around separate stator parts, then each stator part can be independently controlled, but the installation space requirement increases
Solution Approach 1:
The patent merges separate stator parts into a compact integrated stator structure where first stator poles and second stator poles are arranged in different patterns within the same physical footprint. This integration maintains the ability to independently control different pole groups through separate coil windings while significantly reducing the overall installation space required compared to using separate stator assemblies.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration results in a stable, cost-effective actuator with reduced manufacturing complexity and efficient use of space, facilitating variable applicability for vehicle assemblies.
Implementation Method 1
A first stator coil is assigned to the first inner stator poles and the first outer stator part in order to supply a magnetic flux into the magnetic circuit
Implementation Method 2
the first inner stator poles and the first outer stator poles form a magnetic circuit, so that a first magnetic flux can be supplied into the magnetic circuit
Data Source
AI summary
An actuator includes an electric motor having a stator and a rotor that can be rotated relative to the stator about an axis of rotation (D). The stator comprises an inner stator part, a first outer stator part and a second outer stator part, wherein the inner stator part, the first outer stator part and the second outer stator part are aligned with one another along the axis of rotation (D) and the inner stator part forms an arrangement of first inner stator poles on a first side axially facing the first outer stator part, and forms an arrangement of second inner stator poles on a second side axially facing the second outer stator part, wherein the first inner stator poles and the second inner stator poles are integrally connected to one another as a single piece.