Gear Fine-Tuning Pan-Tilt With Arc Rack for Large Pitch Range
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Solution Overview
Problem
Conventional gear fine-tuning pan-tilts cannot achieve a pitch angle of more than 180° in a conventional size and fail to maintain levelness during pitching, which limits camera lens movement and photography efficiency, especially when dealing with large angles or uneven surfaces.
Innovation Solution
A gear fine-tuning pan-tilt design featuring a rotating base, roll adjusting assembly, and pitch adjusting assembly with a complete gear structure, including a pitch fine-tuning worm gear, worm, and knob, along with a roll fine-tuning worm gear and arc-shaped rack, allowing for large-angle pitch adjustments while maintaining levelness and compact size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a complete gear structure is used on the pitch axis to achieve large pitch angles, then the pitch angle range is improved, but the device size and weight increase
Solution Approach 1:
The pitch gear structure is nested within the roll gear structure. The pitch worm gear and pitch worm are positioned inside the roll gear assembly, allowing the pitch axis to achieve large angle ranges without increasing the overall device footprint or weight significantly.
Solution Approach 2:
The patent transitions from a traditional side-by-side arrangement of pitch and roll gears to a vertical stacking arrangement where the pitch gear structure is positioned above the roll gear structure. This dimensional reorganization allows both gear systems to coexist within the same lateral footprint while maintaining their respective functions.
2Weight of stationary object
If the gear structure is miniaturized to control pan-tilt size, then the device size is reduced, but the swing range of the upper structure is limited
Solution Approach 1:
The pitch gear structure uses a worm drive mechanism that provides dynamic adjustment capability. The worm gear can rotate through more than 180 degrees, enabling the upper bearing platform to achieve a pitch swing range exceeding 180 degrees despite the compact size of the miniaturized gear components.
3Adaptability or versatility
If clutching design is added to achieve large pitch angles, then the pitch angle range is improved, but the operation complexity increases
Solution Approach 1:
The clutching mechanism is extracted and integrated into the handle assembly. The clutching function is combined with the fine-tuning knob, allowing the user to engage or disengage the pitch gear from the drive mechanism by simply rotating the same handle, thereby simplifying the operational steps.
4Length of stationary object
If the gear structure is superimposed in a misalignment manner to control size, then the height is reduced, but the lateral size increases and weight increases
Solution Approach 1:
The patent reorganizes the gear structures from a lateral misalignment arrangement to a vertical alignment arrangement. The pitch gear structure is positioned directly above the roll gear structure, allowing both to share the same lateral footprint while maintaining their functional independence, thus controlling both height and lateral dimensions.
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
Enables precise and large-scale pitching and leveling, facilitating camera movement and maintaining levelness during pitch adjustments, achieving angles beyond 90° and improving photography efficiency and accuracy.
Implementation Method 1
the pitch adjusting assembly includes a pitch fine-tuning worm gear, a pitch fine-tuning worm and a pitch fine-tuning knob, the bearing seat is connected with the pitch housing rotating part, the pitch fine-tuning worm gear is engaged with the pitch fine-tuning worm
Implementation Method 2
the roll adjusting assembly includes a roll fine-tuning worm gear, a roll fine-tuning worm, and a roll fine-tuning knob. The roll fine-tuning worm gear is engaged with the roll fine-tuning worm
Implementation Method 3
the roll fine-tuning worm gear is an arc-shaped rack, and the arc opening of the arc-shaped rack faces upward
Data Source
AI summary
A gear fine-tuning pan-tilt includes a rotating base, a roll worm support seat, a roll adjusting assembly, a pitch adjusting assembly, and a bearing seat arranged in sequence from bottom to top; the pitch adjusting assembly of the complete gear structure is located on the above, and the roll adjusting assembly located below adopts an arc-shaped rack structure, which reduces the interference to the pitching movement of the upper assembly and makes the height of the pan-tilt smaller. The arc opening of the arc-shaped rack faces upwards, so that the rotation axis is closer to the center axis of the lens. The upper and lower combination of the two structures strengthens the swing ability of the top of the pan-tilt in the limited size. The structure is able to be aimed at the subject through the rotating base, and leveled the left and right, and determined the pitch angle.