Push-Button Knob Locking Mechanism for Stable Lift Positioning
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Solution Overview
Problem
Existing lift devices lack an efficient and easy-to-use mechanism for locking the support member arrangement in desired positions, which is crucial for stability and safety during operation.
Innovation Solution
A knob mechanism comprising a knob body, a lock mechanism with a movable locking member, a pivot member, and a button to pivot the locking member between extended and retracted positions, allowing secure locking and unlocking of the lever arm for precise control of the support member arrangement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a locking mechanism is added to secure the support member arrangement, then stability and safety are improved, but device complexity increases
Solution Approach 1:
The locking member is nested within the knob body, with the pivot member rotating inside the knob body to drive the locking member between extended and retracted positions. This nested arrangement integrates multiple functions (locking, actuating, positioning) into a compact unit, achieving reliable support member arrangement securing without proportionally increasing overall device complexity
Solution Approach 2:
The pivot member acts as an intermediary between the button and the locking member. When the button is pressed, it pivots the pivot member, which in turn moves the locking member between extended and retracted positions. This intermediary mechanism provides smooth control and precise locking action while maintaining relatively simple device architecture
2Ease of operation
If a manual locking mechanism is implemented, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The locking mechanism is designed to be self-actuating through the pivot member. When the button is pressed, the pivot member automatically rotates and moves the locking member into the extended locked position or retracted unlocked position without requiring additional manual manipulation. This self-service characteristic provides ease of operation while keeping the mechanism relatively simple
Solution Approach 2:
The locking member is made movable between extended and retracted positions through the pivoting action of the pivot member. This dynamic design allows the locking mechanism to transition smoothly between locked and unlocked states with a simple button press, improving ease of operation while maintaining manageable device complexity through the use of motion rather than complex control systems
Data Source
AI summary
A knob mechanism according to the disclosure may include a knob body and a lock mechanism associated with the knob body. The lock mechanism may include a locking member that is movable between an extended position and a retracted position, a pivot member that is pivotable with respect to the knob body to move the locking member, and a button that is operable to pivot the pivot member to move the locking member from the extended position toward the retracted position.