Dial Mechanism Layout for Compact Axial Sensor Detection
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Solution Overview
Problem
Existing dials and operating mechanisms in electronic apparatuses face challenges in saving space and improving component arrangement efficiency, particularly in the axial direction.
Innovation Solution
A dial and operating mechanism are designed with a rotatable dial member, a moving mechanism, and electronic sensors disposed in specific directions relative to the shaft portion, incorporating a prevention portion and biasing members to optimize component arrangement and save space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sensors and electronic members are disposed close to the dial member, then the detection precision and operational response are improved, but the axial space requirement increases and component arrangement efficiency deteriorates
Solution Approach 1:
The patent repositions the electronic member and sensors from the axial direction to the radial direction, arranging them on the side surface of the shaft portion rather than along its length. This dimensional change allows the dial mechanism to maintain compact axial dimensions while providing sufficient space for sensor placement and signal detection, effectively resolving the contradiction between detection precision and axial space requirements
2Volume of moving object
If components are arranged densely to save space, then the overall size is reduced, but the component arrangement efficiency and ease of assembly deteriorate
Solution Approach 1:
The patent divides the dial mechanism into distinct functional segments: the dial member for operation, the shaft portion for support, and the electronic member for detection. Each segment has a dedicated function and is positioned in an optimal location, with the electronic member disposed on the side surface of the shaft portion. This segmentation allows for simplified assembly and manufacturing while maintaining compact overall dimensions, as each component can be independently manufactured and then assembled in its predetermined position
Data Source
AI summary
A first dial includes: a rotatable dial member having a shaft portion; a moving mechanism that moves the dial member in a Z1 direction; and a flexible print substrate having a first sensor that detects rotation of the dial member and a second sensor that detects a position of the dial member moved by the moving mechanism, in which the flexible print substrate is disposed on a Z1 direction side with respect to the shaft portion.