Jog Dial Press Detection Layout for Vibration Isolation
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Solution Overview
Problem
Existing information processing devices, such as DJ controllers, suffer from reduced detection sensitivity of pressing operations due to components like rollers and roller-holding structures, which are prone to detecting vibrations as pressing operations when subjected to external vibrations.
Innovation Solution
The configuration of the jog dial includes a base with guide ribs and rollers to support the jog dial, along with elastic members and a press detecting unit positioned to minimize vibration interference, ensuring accurate detection of pressing operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If rollers and roller-holding structure are disposed on the tape-shaped switch to support the rotary body section, then the rotary body section can be stably supported and rotated, but the weight of components on the switch increases causing vibration to be detected as pressing operations
Solution Approach 1:
The support function is segmented from the switch assembly. The guide ribs on the base provide the support and rotation function, while the switch assembly only performs detection, separating the heavy mechanical support components from the sensitive detection components.
Solution Approach 2:
The pressing detection function is extracted from the heavy roller-supported structure and placed on the lightweight rotary body section. The press detecting unit detects pressing operations through the top plate without requiring heavy support components at the detection location.
2Measurement precision
If the press detecting unit is positioned close to the center of gravity for stable detection, then detection stability is improved, but vibration from music playback causes false pressing operation detection
Solution Approach 1:
The top plate acts as an intermediary between the user's pressing operation and the press detecting unit. It transmits the pressing force while isolating the detection unit from direct exposure to vibrations from the music playback and external sources.
Solution Approach 2:
The press detecting unit is positioned at a specific location on the rotary body section that optimizes the balance between detection stability and vibration resistance, rather than simply at the center of gravity or at the edge.
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
This configuration reduces the likelihood of false vibration detection, enhancing the sensitivity and reliability of pressing operation detection by isolating the press detecting unit from external vibrations.
Implementation Method 1
a plurality of elastic members 85 are provided between the press detecting unit 87 and an inner surface 841B of the frame 841 of the top plate 84 in a radial direction of the jog dial 8
Data Source
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AI summary
An acoustic device (4) includes a rotary operator (8) and a base (6) supporting the rotary operator (8) so that the rotary operator (8) is rotatable. The rotary operator (8) includes a rotary body (81) provided on the base (6), a pressed portion (84) provided on the rotary body (81) and on which a pressing operation is performed, a press detecting unit (87) provided on the rotary body (81) along an outer circumference of the rotary operator (8) and configured to detect the pressing operation performed on the pressed portion (84), and elastic members (85, 86) interposed between the pressed portion (84) and the press detecting unit (87).