Adjustable Stator Rotary Motor for Robot Arm Space Optimization
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Solution Overview
Problem
Conventional rotary motors in electromechanical systems face limitations in space utilization due to their fixed rectangular or circular shapes, restricting the optimization of equipment space in non-standard configurations.
Innovation Solution
The design of a rotary motor with adjustable stator shape and relative position to the rotor, allowing for rectangular or curved cross-sections and varying stator quantities, enabling flexible space utilization and reduced dimensions, which can be applied to robot arms and power apparatuses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional rotary motors with fixed rectangular or circular shapes are used, then the motor structure is simple and easy to manufacture, but the space utilization is poor when the installation space is non-standard
Solution Approach 1:
The patent applies the dynamics principle by making the stator shape adjustable between different configurations (rectangular, circular, or custom shapes). The stator can dynamically adapt its shape to match the available installation space, transforming from a fixed-geometry component to a flexible one that optimizes space utilization while maintaining manufacturing feasibility through standardized production methods for different shapes
Solution Approach 2:
The patent implements parameter changes by modifying the geometric parameters of the stator, specifically the cross-sectional shape and dimensions. The stator's outer peripheral shape can be changed from rectangular to circular or other custom shapes, allowing the motor to adapt to different installation spaces while maintaining the same functional performance
2Volume of moving object
If the stator shape is made adjustable to optimize space utilization, then the space utilization improves, but the device complexity increases
Solution Approach 1:
The patent applies asymmetry by allowing the stator to have asymmetric or non-traditional shapes (such as rectangular with rounded corners, or custom irregular shapes) that better fit the available installation space. This asymmetric design enables the motor to utilize non-standard spaces efficiently without requiring complex internal structures, maintaining relative simplicity while improving space utilization
3Ease of operation
If multiple stators are used to achieve desired rotation, then the rotation control is improved, but the motor dimensions and weight increase
Solution Approach 1:
The patent applies local quality by strategically positioning multiple stators at specific locations around the rotor based on the required rotation control. Instead of uniformly distributing stators or using a full circular arrangement, the stators are placed only where needed to achieve the desired rotational control, reducing the overall motor dimensions and weight while maintaining effective rotation control
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 approach enhances space utilization and flexibility in electromechanical systems, reducing weight and space usage while minimizing cogging forces in power apparatuses and enabling efficient movement in robot arms.
Implementation Method 1
The stator has an iron core and a coil wound around the iron core
Implementation Method 2
The rotor has a magnet and a shaft. The stator has an iron core and a coil wound around the iron core
Data Source
Figure 1
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AI summary
A rotary motor includes a rotor and at least one stator. The rotor has a shaft. The stator has an iron core and a coil wound around the iron core. A cross section of the iron core perpendicular to the shaft has a long axis and a short axis, and the rotor is disposed on an extension line of the long axis.