Rotary Knob Locking Structure for Easy Detachment and Durability
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Solution Overview
Problem
Existing rotary operators for acoustic devices face challenges in achieving easy attachment and detachment while maintaining durability and operational feeling, often requiring excessive force that can damage components and reduce productivity.
Innovation Solution
A rotary operator design featuring a rotary member, an operation knob, and a locking member with a first portion fitted into the operation knob and a second portion extending orthogonally to engage with the rotary member, allowing for secure locking and easy detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If friction force between rotary shaft and operation knob is increased to prevent easy detachment, then durability is improved, but productivity is lowered and component damage occurs due to excessive attachment force
Solution Approach 1:
The locking mechanism is segmented into a locking member with a first portion fitted in the operation knob and a second portion engaged with the rotary member. This segmentation allows the attachment force to be distributed and controlled, preventing excessive force application while ensuring secure locking and easy detachment.
Solution Approach 2:
The locking member acts as an intermediary between the operation knob and the rotary member. It mediates the connection by providing a controlled engagement mechanism that secures the operation knob without requiring excessive attachment force, thus protecting components from damage.
2Reliability
If friction force between rotary shaft and operation knob is increased to prevent easy detachment, then durability is improved, but operational feeling deteriorates due to excessive attachment force
Solution Approach 1:
The locking mechanism is divided into distinct portions that engage separately, allowing for controlled locking without excessive force. This ensures secure attachment while maintaining smooth operation and good operational feeling.
Solution Approach 2:
The locking member serves as an intermediary that provides controlled engagement, securing the operation knob to the rotary member without requiring excessive force that would degrade operational feeling.
3Stability of the object's composition
If excessive force is applied to attach operation knob to rotary shaft, then attachment security is improved, but component damage occurs
Solution Approach 1:
The locking mechanism is segmented into a first portion in the operation knob and a second portion in the rotary member, allowing secure attachment through distributed engagement rather than concentrated excessive force, thus preventing component damage.
Solution Approach 2:
The locking member acts as an intermediary that provides controlled engagement between the operation knob and rotary member, ensuring secure attachment without applying excessive force that could damage components.
4Reliability
If operation knob is tightly secured to rotary shaft, then durability is improved, but ease of replacement deteriorates
Solution Approach 1:
The locking mechanism is divided into separable portions that can be easily engaged and disengaged. This allows the operation knob to be securely attached during use but easily replaced when needed, maintaining both durability and ease of replacement.
Data Source
AI summary
A rotary operator includes a rotary member, an operation knob capped on the rotary member in a first direction, and a locking member including a first portion fitted in a side of the operation knob opposite from the rotary member in the first direction and a second portion extending in a second direction orthogonal to the first direction to be engaged with the rotary member.