Rotary Encoder Retaining Ring With Integrated Shielding and Guide Mounting
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Solution Overview
Problem
Existing rotary encoders, particularly modular ones, face challenges in simple, cost-effective, and secure mounting, which affects their reliable operation and increases costs due to complex assembly processes and susceptibility to external interference and contamination.
Innovation Solution
A retaining device formed by a retaining ring and an end shield with specific coupling elements and shielding features allows for secure mechanical and electrical coupling of the encoder module to the end shield and circuit board, providing a simple assembly method that includes guide tabs and dust protection, eliminating the need for separate components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional mounting methods are used for modular rotary encoders, then the encoder can be installed, but the assembly process becomes complex and costly
Solution Approach 1:
The patent combines multiple mounting functions into a single integrated retaining device that simultaneously performs mechanical retention, electrical connection, and alignment functions, eliminating the need for separate mounting components and simplifying the assembly process
Solution Approach 2:
The retaining device is designed to perform multiple functions: mechanical retention of the encoder module, electrical connection through integrated contacts, and alignment guidance via guide elements, making it a multi-functional component that replaces several separate parts
2Reliability
If conventional mounting methods are used, then the encoder can be installed, but security of mounting is reduced
Solution Approach 1:
The patent merges retention, electrical connection, and alignment functions into a single integrated retaining device, providing secure mounting through multiple simultaneous functions rather than relying on separate components
Solution Approach 2:
The retaining device incorporates curved or angled contact surfaces that provide self-centering and self-aligning properties, ensuring secure mechanical retention and proper positioning without requiring complex alignment procedures
3Object-affected harmful factors
If the encoder is exposed to external environment, then assembly is simple, but susceptibility to interference and contamination increases
Solution Approach 1:
The patent integrates shielding elements directly into the retaining device structure, combining protection functions with mechanical retention and electrical connection functions in a single component
Solution Approach 2:
The retaining device acts as an intermediary barrier between the encoder module and the external environment, providing electromagnetic shielding and physical protection while maintaining the simplicity of the overall assembly
Data Source
AI summary
A retaining device for coupling an encoder unit of a rotary encoder to an electric machine includes an end shield having a guide groove for receiving an encoder module of the encoder unit, and a retaining ring including a first coupling element for mechanically coupling the retaining ring to the end shield, with the first coupling element being embodied as a hole. A fastening screw is received in the hole to mechanically fasten the retaining ring to the end shield. A shielding element is integrally formed on the retaining ring for shielding against an external interference field.