Adjustable Stand Ratchet Structure for Fine Rotation Control
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Solution Overview
Problem
Current camera stands with gear-based adjustment systems face limitations in achieving fine rotation angles due to the minimum rotation angle being tied to the number of gear teeth, requiring a large number of teeth to achieve smaller angles, which is economically and manufacturing-wise impractical.
Innovation Solution
An adjustable stand design incorporating a rotation component, an adapter ring, and a rotation limiting component with ratchet teeth of different angles, allowing for fine rotation adjustments by engaging ratchet teeth with varying slopes and angles, enabling rotations as small as 0.3 to 0.7 degrees.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the number of gear teeth is increased to reduce the minimum rotation angle, then the rotation precision is improved, but the manufacturing complexity and cost increase significantly
Solution Approach 1:
The patent divides the rotation adjustment function into two independent ratchet mechanisms: a first ratchet mechanism with first ratchet teeth and a second ratchet mechanism with second ratchet teeth having different angles. This segmentation allows each mechanism to use a reasonable number of teeth while achieving fine overall adjustment, avoiding the need for a single gear with an excessive number of teeth.
Solution Approach 2:
The patent applies different ratchet tooth angles locally: the first ratchet teeth have a first angle and the second ratchet teeth have a second angle different from the first. This local differentiation in geometric parameters enables the system to achieve fine rotation adjustments without requiring any single component to have an impractically large number of teeth.
2Measurement precision
If the number of gear teeth is increased to achieve smaller rotation angles, then the rotation precision is improved, but the device complexity increases
Solution Approach 1:
The rotation adjustment system is segmented into two independent ratchet mechanisms with different tooth angles. Each mechanism can be designed with a moderate number of teeth, and their combination achieves fine rotation precision without requiring any single component to be overly complex.
Solution Approach 2:
Instead of using a single gear with many teeth to achieve fine rotation, the patent inverts the approach by using two ratchet mechanisms with different tooth angles. This inverted strategy achieves the same fine adjustment capability while keeping each individual component simpler and more manageable.
3Measurement precision
If a gear with 360 teeth is used to achieve 1 degree minimum rotation, then the rotation precision is improved, but the economic feasibility deteriorates
Solution Approach 1:
The patent segments the fine rotation function across two ratchet mechanisms with different tooth angles. Each ratchet can be manufactured with a practical number of teeth, avoiding the economic burden of manufacturing a single gear with 360 teeth while achieving equivalent or better rotation precision.
Solution Approach 2:
The patent changes the geometric parameters of the ratchet teeth by using two different angles instead of uniform teeth. This parameter differentiation allows each ratchet to be optimized for manufacturing with a reasonable number of teeth while collectively achieving fine rotation precision, improving economic feasibility.
Data Source
AI summary
The present disclosure relates to a stand. The stand may include a supporting component, a rotation component, a rotation limiting component, and an adapter ring. The rotation component may be rotatably connected to the supporting component and may be configured to rotate about a first rotation axis. The adapter ring may be placed between the rotation component and the rotation limiting component. The rotation component may include first ratchet teeth on a first side of the rotation component. The rotation limiting component may include second ratchet teeth on a second side of the rotation limiting component facing the first side. The adapter ring may include third ratchet teeth and fourth ratchet teeth on a third side and a fourth side of the adapter ring, respectively. The third ratchet teeth may be engaged with the first ratchet teeth and the fourth ratchet teeth may be engaged with the second ratchet teeth.