Lens Operation Ring Click Mechanism for Tactile State Recognition
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Solution Overview
Problem
Existing operation devices for lens barrels in imaging apparatuses lack clear and differentiated click feelings for different operational states, making it difficult to easily grasp the operation state of the operation member.
Innovation Solution
An operation device with a click mechanism that imparts distinct click feelings at different positions through a plurality of engaging parts with varying angles and shapes, allowing for easy identification of rotational positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If multiple click mechanisms are provided with the same click feeling, then the operation state can be uniformly controlled, but it becomes difficult to easily grasp the current operational state
Solution Approach 1:
The patent applies local quality by making each click mechanism have different click feelings (first, second, and third click feelings with different strengths) corresponding to different operational states. This allows the operator to distinguish the current operational state through tactile feedback without needing visual confirmation or additional indicators.
2Volume of moving object
If the click mechanism structure is simplified, then the device size can be reduced, but the ability to provide differentiated click feelings for different positions is compromised
Solution Approach 1:
The patent changes parameters of the click mechanism by varying the spring constants (k1, k2, k3) and pre-compression amounts (x1, x2, x3) of different click mechanisms. This allows differentiated click feelings to be achieved through parameter adjustment rather than structural complexity, maintaining compact device size while providing distinct tactile feedback for different operational states.
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
The device provides clear and differentiated click feelings, enabling easy grasping of the operation state and reducing the risk of unintentional slipping, while maintaining a compact size.
Implementation Method 1
a click mechanism that imparts a first click feeling at a first position, imparts a second click feeling weaker than the first click feeling at a second position, and imparts a third click feeling weaker than the second click feeling at a third position
Data Source
AI summary
Provided are an operation device, a lens device, and an imaging apparatus that allow an operation state of an operation member to be easily grasped. An operation device includes a base member; an annular operation member that is provided on the base member and is rotatable around an axis; and a click mechanism that imparts a first click feeling at a first position, imparts a second click feeling weaker than the first click feeling at a second position, and imparts a third click feeling weaker than the second click feeling at a third position, with respect to rotation of the operation member. A plurality of the click mechanisms are disposed.