Rotary Position Sensor Flange Engagement for Shaft Hole Protection
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Solution Overview
Problem
Existing rotary position sensors face challenges in accurately transmitting rotational motion to the rotating body without affecting the shaft hole, which is crucial for precise inspections.
Innovation Solution
The rotary position sensor design includes a rotating body with a cylindrical shaft body and a flange having engaging portions on its periphery, allowing external forces to be applied for rotation without touching the shaft hole. This configuration enhances operational accuracy and prevents impact on the shaft hole during inspections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an operating jig is inserted into the shaft hole to transmit rotational force, then rotational motion can be transmitted to the rotating body, but the shaft hole is affected and may be damaged
Solution Approach 1:
The patent introduces an operating shaft as an intermediary component that transmits rotational force from the operating jig to the rotating body through the holder, rather than directly inserting the operating jig into the shaft hole. This mediator protects the shaft hole from direct contact and potential damage during operation
Solution Approach 2:
The patent divides the rotational force transmission system into separate functional components: the operating jig, the holder with operating shaft, and the rotating body. This segmentation allows the operating force to be applied to the holder's external structure rather than through the shaft hole, protecting the shaft hole from damage
2Ease of operation
If force is applied to the vicinity of the central axis for rotation, then the rotating body can be operated, but the operation accuracy is reduced
Solution Approach 1:
The patent moves the force application point from the central axis (one-dimensional rotation point) to the periphery of the flange (two-dimensional external surface). This dimensional change allows force to be applied at a greater radial distance from the axis, creating a larger moment arm that improves operational accuracy and control
Data Source
AI summary
A rotary position sensor configured to transmit the rotational motion from the outside to a rotating body with high accuracy, allowing inspection without affecting the shaft hole includes a rotating body including a cylindrical shaft body having a shaft hole and a flange continuously connected to the shaft body and extending outward in a radial direction of the shaft body, a housing including a bearing through which the shaft body of the rotating body is inserted, and a measuring unit configured to measure a relative position of the rotating body to the housing, wherein the flange includes an engaging portion on a periphery thereof.