Motor Transmission Mechanism With Torque Sensing and Compact Bearing Support
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Solution Overview
Problem
Current motor transmission mechanisms in upper limb rehabilitation robots can withstand only small torques, lack torque detection capability, and have large volumes, limiting their effectiveness and precision in rehabilitation exercises.
Innovation Solution
A motor transmission mechanism incorporating a torque sensor, output component, support bearing, and mounting structure that allows for torque detection and increased torque capacity, while maintaining a compact design by housing these components within an accommodation cavity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If current motor transmission mechanisms are used, then the structure is simple, but the torque capacity is small and cannot be detected
Solution Approach 1:
The patent combines the motor, torque sensor, output component, and support bearing into an integrated motor transmission mechanism. The torque sensor is positioned between the motor output and the output component, allowing torque detection while maintaining power transmission. This merging approach increases torque capacity and enables torque detection without creating a complex multi-component system.
2Measurement precision
If torque sensor and support bearing are added, then torque detection and capacity improve, but volume increases
Solution Approach 1:
The patent positions the torque sensor and support bearing within the motor housing structure. The support bearing is arranged to support the output component while being integrated into the existing motor architecture. The torque sensor is positioned between the motor output shaft and the output component, utilizing the existing motor housing space. This nesting approach allows torque detection and increased torque capacity without significantly increasing the overall mechanism volume.
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
Enables precise control of motor output torque, enhances torque capacity, and reduces the overall volume of the mechanism, improving the effectiveness and efficiency of upper limb rehabilitation exercises.
Implementation Method 1
an output torque of the motor can be detected by the torque sensor
Implementation Method 2
the other end of the output component is supported by the support bearing
Data Source
AI summary
A motor transmission mechanism and an upper limb rehabilitation robot are provided. The motor transmission mechanism includes a motor, a torque sensor, an output component, a support bearing, and a mounting structure. The torque sensor, the output component, and an inner ring of the support bearing are sequentially fixedly connected along an axial direction of the motor. The mounting structure has an accommodation cavity and an opening structure in communication with the accommodation cavity. The torque sensor, at least a portion of the output component, and the support bearing are disposed within the accommodation cavity. The output component passes through the opening structure to an outside of the mounting structure, and the motor and an outer ring of the support bearing are fixed to the mounting structure.