Resolver Mounting Structure for Concentricity Accuracy
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Solution Overview
Problem
Existing resolver mounting structures face issues with concentricity accuracy and increased production costs due to the need for various plates and machining inaccuracies, leading to decreased reliability in rotation angle detection.
Innovation Solution
A mounting structure using clamps with protruding portions that engage with concavities on the stator, allowing standard resolvers to be used across different housings without shifting concentricity, and compensating for machining errors, thereby simplifying the production process and reducing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the stator is fixed using a fixing member with low machining accuracy, then the manufacturing cost is reduced, but the concentricity between rotor and stator shifts
Solution Approach 1:
The stator's outer peripheral surface serves its own positioning function by providing concavities that directly engage with the clamp's protruding portion. This self-positioning mechanism eliminates the need for high-precision machining of separate fixing members, as the stator itself becomes the reference feature for concentricity alignment.
Solution Approach 2:
The clamp acts as an intermediary component with a protruding portion that mediates between the stator's concavity and the housing opening. This intermediary structure transfers the positioning function from the fixing member to the stator-clamp interface, allowing low-precision fixings while maintaining high concentricity through the engaged concavity-protrusion relationship.
2Adaptability or versatility
If various different plates are used to form the stator for different housing mounting positions, then the mounting adaptability is improved, but the parts cost and device complexity increase
Solution Approach 1:
A single standard stator design with a universally applicable clamp mounting structure serves multiple housing types and mounting positions. The clamp's protruding portion engaging with the stator's concavity provides a standardized interface that can be adapted to different housings without requiring variations in the stator plate design, thus achieving universality.
Solution Approach 2:
The mounting function is segmented into two independent components: the stator with its concavity feature and the clamp with its protruding portion. This segmentation allows the stator to remain a standard component while the clamp adapts to different mounting requirements, separating the positioning function from the mounting adaptation function.
3Adaptability or versatility
If various different plates are used to form the stator for different housing mounting positions, then the mounting adaptability is improved, but the production cost increases
Solution Approach 1:
A single standard stator design with a universally applicable clamp mounting structure serves multiple housing types and mounting positions. The clamp's protruding portion engaging with the stator's concavity provides a standardized interface that can be adapted to different housings without requiring variations in the stator plate design, thus achieving universality.
Solution Approach 2:
The invention discards the practice of creating multiple stator plate variations for different mounting positions. Instead, it recovers efficiency by using a single standard stator design combined with clamps that adapt to different housings, thereby eliminating unnecessary parts proliferation and reducing production costs.
Data Source
AI summary
A structure for mounting a resolver in a housing, in which it is not necessary to use various different plates for forming the stator and accuracy of concentricity of the rotor and the stator is prevented from decreasing by a simple structure, are provided. The structure for mounting a resolver in a housing has a rotor and a stator arranged the outside of the rotor, in which the stator is mounted at an opening of the housing by clamps, projections are formed on an outer peripheral surface of the stator, protruding portions are formed on the clamps, and the stator is pressed to the housing by the clamps in a state in which the protruding portions are engaged with the concavities of the stator.