Through-Shaft Encoder Layout for Compact Dual-Sided Motors
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Solution Overview
Problem
Integrating encoders into miniature motors for applications like medical devices and small consumer electronics is challenging due to size and structural requirements, with existing designs either requiring large profiles or limited speed and resolution.
Innovation Solution
A motor apparatus with a through-hole configuration that allows the motor shaft to extend through the encoder, enabling dual-sided functionality for driving loads or connecting to components, enhancing space efficiency and versatility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If traditional encoder designs are used in miniature motors, then encoder functionality is provided, but the motor profile becomes too large and speed/resolution are limited
Solution Approach 1:
The encoder is designed with a through-hole configuration that allows the shaft to extend through the encoder in the axial dimension, rather than requiring radial space. This dimensional reorganization enables compact radial profile while maintaining encoder functionality and high resolution through the optical path arranged along the axial direction
2Speed
If traditional encoder designs are used in miniature motors, then encoder functionality is provided, but the motor speed is limited
Solution Approach 1:
By reorganizing the encoder components along the axial dimension with the through-hole configuration, the design reduces radial footprint while accommodating high-speed operation. The optical components are arranged to support high rotational speeds without increasing the motor's radial profile
Solution Approach 2:
The encoder design parameters are optimized for high-speed operation, including the through-hole configuration and optical path arrangement that reduce inertia and allow the encoder to function accurately at higher rotational speeds while maintaining a compact profile
3Adaptability or versatility
If the shaft extends through the encoder, then dual-sided functionality and space efficiency are enhanced, but structural complexity increases
Solution Approach 1:
The through-hole configuration enables the shaft to extend through the encoder, allowing dual-sided functionality where loads or components can be connected to either end of the shaft. This multi-functional design accommodates various mounting configurations and application requirements within a single encoder structure
Data Source
AI summary
The subject technology is directed to a motor apparatus or rotary system. In an embodiment, the apparatus includes a housing comprising a first opening positioned on a first side. A motor comprising a shaft is positioned inside the housing. The shaft comprises a first portion extending through the first opening. The apparatus further includes a code wheel and an encoder. The encoder comprises a second opening. The first portion of the shaft extends through the second opening. By extending the shaft through the encoder, the apparatus allows for dual-sided functionality, enabling both ends of the shaft to be used for driving loads or connecting to other components. This configuration enhances space efficiency and the versatility of the motor apparatus, making it ideal for various compact applications.